chuYinKouXian/localEarth/node_modules/babel-core/browser.js

(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.babel = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _defaults(obj, defaults) { var keys = Object.getOwnPropertyNames(defaults); for (var i = 0; i < keys.length; i++) { var key = keys[i]; var value = Object.getOwnPropertyDescriptor(defaults, key); if (value && value.configurable && obj[key] === undefined) { Object.defineProperty(obj, key, value); } } return obj; }

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

require("./plugins/flow");

var _acornJsxInject = require("acorn-jsx/inject");

var _acornJsxInject2 = _interopRequireDefault(_acornJsxInject);

var _srcIndex = require("./src/index");

var acorn = _interopRequireWildcard(_srcIndex);

_defaults(exports, _interopRequireWildcard(_srcIndex));

(0, _acornJsxInject2["default"])(acorn);
},{"./plugins/flow":2,"./src/index":5,"acorn-jsx/inject":174}],2:[function(require,module,exports){
"use strict";

var acorn = require("../src/index");

var pp = acorn.Parser.prototype;
var tt = acorn.tokTypes;

pp.isRelational = function (op) {
  return this.type === tt.relational && this.value === op;
};

pp.expectRelational = function (op) {
  if (this.isRelational(op)) {
    this.next();
  } else {
    this.unexpected();
  }
};

pp.flow_parseDeclareClass = function (node) {
  this.next();
  this.flow_parseInterfaceish(node, true);
  return this.finishNode(node, "DeclareClass");
};

pp.flow_parseDeclareFunction = function (node) {
  this.next();

  var id = node.id = this.parseIdent();

  var typeNode = this.startNode();
  var typeContainer = this.startNode();

  if (this.isRelational("<")) {
    typeNode.typeParameters = this.flow_parseTypeParameterDeclaration();
  } else {
    typeNode.typeParameters = null;
  }

  this.expect(tt.parenL);
  var tmp = this.flow_parseFunctionTypeParams();
  typeNode.params = tmp.params;
  typeNode.rest = tmp.rest;
  this.expect(tt.parenR);

  this.expect(tt.colon);
  typeNode.returnType = this.flow_parseType();

  typeContainer.typeAnnotation = this.finishNode(typeNode, "FunctionTypeAnnotation");
  id.typeAnnotation = this.finishNode(typeContainer, "TypeAnnotation");

  this.finishNode(id, id.type);

  this.semicolon();

  return this.finishNode(node, "DeclareFunction");
};

pp.flow_parseDeclare = function (node) {
  if (this.type === tt._class) {
    return this.flow_parseDeclareClass(node);
  } else if (this.type === tt._function) {
    return this.flow_parseDeclareFunction(node);
  } else if (this.type === tt._var) {
    return this.flow_parseDeclareVariable(node);
  } else if (this.isContextual("module")) {
    return this.flow_parseDeclareModule(node);
  } else {
    this.unexpected();
  }
};

pp.flow_parseDeclareVariable = function (node) {
  this.next();
  node.id = this.flow_parseTypeAnnotatableIdentifier();
  this.semicolon();
  return this.finishNode(node, "DeclareVariable");
};

pp.flow_parseDeclareModule = function (node) {
  this.next();

  if (this.type === tt.string) {
    node.id = this.parseExprAtom();
  } else {
    node.id = this.parseIdent();
  }

  var bodyNode = node.body = this.startNode();
  var body = bodyNode.body = [];
  this.expect(tt.braceL);
  while (this.type !== tt.braceR) {
    var node2 = this.startNode();

    // todo: declare check
    this.next();

    body.push(this.flow_parseDeclare(node2));
  }
  this.expect(tt.braceR);

  this.finishNode(bodyNode, "BlockStatement");
  return this.finishNode(node, "DeclareModule");
};

// Interfaces

pp.flow_parseInterfaceish = function (node, allowStatic) {
  node.id = this.parseIdent();

  if (this.isRelational("<")) {
    node.typeParameters = this.flow_parseTypeParameterDeclaration();
  } else {
    node.typeParameters = null;
  }

  node["extends"] = [];

  if (this.eat(tt._extends)) {
    do {
      node["extends"].push(this.flow_parseInterfaceExtends());
    } while (this.eat(tt.comma));
  }

  node.body = this.flow_parseObjectType(allowStatic);
};

pp.flow_parseInterfaceExtends = function () {
  var node = this.startNode();

  node.id = this.parseIdent();
  if (this.isRelational("<")) {
    node.typeParameters = this.flow_parseTypeParameterInstantiation();
  } else {
    node.typeParameters = null;
  }

  return this.finishNode(node, "InterfaceExtends");
};

pp.flow_parseInterface = function (node) {
  this.flow_parseInterfaceish(node, false);
  return this.finishNode(node, "InterfaceDeclaration");
};

// Type aliases

pp.flow_parseTypeAlias = function (node) {
  node.id = this.parseIdent();

  if (this.isRelational("<")) {
    node.typeParameters = this.flow_parseTypeParameterDeclaration();
  } else {
    node.typeParameters = null;
  }

  var oldInType = this.inType;
  this.inType = true;

  this.expect(tt.eq);

  node.right = this.flow_parseType();

  this.inType = oldInType;

  this.semicolon();

  return this.finishNode(node, "TypeAlias");
};

// Type annotations

pp.flow_parseTypeParameterDeclaration = function () {
  var node = this.startNode();
  node.params = [];

  this.expectRelational("<");
  while (!this.isRelational(">")) {
    node.params.push(this.flow_parseTypeAnnotatableIdentifier());
    if (!this.isRelational(">")) {
      this.expect(tt.comma);
    }
  }
  this.expectRelational(">");

  return this.finishNode(node, "TypeParameterDeclaration");
};

pp.flow_parseTypeParameterInstantiation = function () {
  var node = this.startNode(),
      oldInType = this.inType;
  node.params = [];

  this.inType = true;

  this.expectRelational("<");
  while (!this.isRelational(">")) {
    node.params.push(this.flow_parseType());
    if (!this.isRelational(">")) {
      this.expect(tt.comma);
    }
  }
  this.expectRelational(">");

  this.inType = oldInType;

  return this.finishNode(node, "TypeParameterInstantiation");
};

pp.flow_parseObjectPropertyKey = function () {
  return this.type === tt.num || this.type === tt.string ? this.parseExprAtom() : this.parseIdent(true);
};

pp.flow_parseObjectTypeIndexer = function (node, isStatic) {
  node["static"] = isStatic;

  this.expect(tt.bracketL);
  node.id = this.flow_parseObjectPropertyKey();
  this.expect(tt.colon);
  node.key = this.flow_parseType();
  this.expect(tt.bracketR);
  this.expect(tt.colon);
  node.value = this.flow_parseType();

  this.flow_objectTypeSemicolon();
  return this.finishNode(node, "ObjectTypeIndexer");
};

pp.flow_parseObjectTypeMethodish = function (node) {
  node.params = [];
  node.rest = null;
  node.typeParameters = null;

  if (this.isRelational("<")) {
    node.typeParameters = this.flow_parseTypeParameterDeclaration();
  }

  this.expect(tt.parenL);
  while (this.type === tt.name) {
    node.params.push(this.flow_parseFunctionTypeParam());
    if (this.type !== tt.parenR) {
      this.expect(tt.comma);
    }
  }

  if (this.eat(tt.ellipsis)) {
    node.rest = this.flow_parseFunctionTypeParam();
  }
  this.expect(tt.parenR);
  this.expect(tt.colon);
  node.returnType = this.flow_parseType();

  return this.finishNode(node, "FunctionTypeAnnotation");
};

pp.flow_parseObjectTypeMethod = function (start, isStatic, key) {
  var node = this.startNodeAt(start);
  node.value = this.flow_parseObjectTypeMethodish(this.startNodeAt(start));
  node["static"] = isStatic;
  node.key = key;
  node.optional = false;
  this.flow_objectTypeSemicolon();
  return this.finishNode(node, "ObjectTypeProperty");
};

pp.flow_parseObjectTypeCallProperty = function (node, isStatic) {
  var valueNode = this.startNode();
  node["static"] = isStatic;
  node.value = this.flow_parseObjectTypeMethodish(valueNode);
  this.flow_objectTypeSemicolon();
  return this.finishNode(node, "ObjectTypeCallProperty");
};

pp.flow_parseObjectType = function (allowStatic) {
  var nodeStart = this.startNode();
  var node;
  var optional = false;
  var property;
  var propertyKey;
  var propertyTypeAnnotation;
  var token;
  var isStatic;

  nodeStart.callProperties = [];
  nodeStart.properties = [];
  nodeStart.indexers = [];

  this.expect(tt.braceL);

  while (this.type !== tt.braceR) {
    var start = this.markPosition();
    node = this.startNode();
    if (allowStatic && this.isContextual("static")) {
      this.next();
      isStatic = true;
    }

    if (this.type === tt.bracketL) {
      nodeStart.indexers.push(this.flow_parseObjectTypeIndexer(node, isStatic));
    } else if (this.type === tt.parenL || this.isRelational("<")) {
      nodeStart.callProperties.push(this.flow_parseObjectTypeCallProperty(node, allowStatic));
    } else {
      if (isStatic && this.type === tt.colon) {
        propertyKey = this.parseIdent();
      } else {
        propertyKey = this.flow_parseObjectPropertyKey();
      }
      if (this.isRelational("<") || this.type === tt.parenL) {
        // This is a method property
        nodeStart.properties.push(this.flow_parseObjectTypeMethod(start, isStatic, propertyKey));
      } else {
        if (this.eat(tt.question)) {
          optional = true;
        }
        this.expect(tt.colon);
        node.key = propertyKey;
        node.value = this.flow_parseType();
        node.optional = optional;
        node["static"] = isStatic;
        this.flow_objectTypeSemicolon();
        nodeStart.properties.push(this.finishNode(node, "ObjectTypeProperty"));
      }
    }
  }

  this.expect(tt.braceR);

  return this.finishNode(nodeStart, "ObjectTypeAnnotation");
};

pp.flow_objectTypeSemicolon = function () {
  if (!this.eat(tt.semi) && !this.eat(tt.comma) && this.type !== tt.braceR) {
    this.unexpected();
  }
};

pp.flow_parseGenericType = function (start, id) {
  var node = this.startNodeAt(start);

  node.typeParameters = null;
  node.id = id;

  while (this.eat(tt.dot)) {
    var node2 = this.startNodeAt(start);
    node2.qualification = node.id;
    node2.id = this.parseIdent();
    node.id = this.finishNode(node2, "QualifiedTypeIdentifier");
  }

  if (this.isRelational("<")) {
    node.typeParameters = this.flow_parseTypeParameterInstantiation();
  }

  return this.finishNode(node, "GenericTypeAnnotation");
};

pp.flow_parseVoidType = function () {
  var node = this.startNode();
  this.expect(tt._void);
  return this.finishNode(node, "VoidTypeAnnotation");
};

pp.flow_parseTypeofType = function () {
  var node = this.startNode();
  this.expect(tt._typeof);
  node.argument = this.flow_parsePrimaryType();
  return this.finishNode(node, "TypeofTypeAnnotation");
};

pp.flow_parseTupleType = function () {
  var node = this.startNode();
  node.types = [];
  this.expect(tt.bracketL);
  // We allow trailing commas
  while (this.pos < this.input.length && this.type !== tt.bracketR) {
    node.types.push(this.flow_parseType());
    if (this.type === tt.bracketR) break;
    this.expect(tt.comma);
  }
  this.expect(tt.bracketR);
  return this.finishNode(node, "TupleTypeAnnotation");
};

pp.flow_parseFunctionTypeParam = function () {
  var optional = false;
  var node = this.startNode();
  node.name = this.parseIdent();
  if (this.eat(tt.question)) {
    optional = true;
  }
  this.expect(tt.colon);
  node.optional = optional;
  node.typeAnnotation = this.flow_parseType();
  return this.finishNode(node, "FunctionTypeParam");
};

pp.flow_parseFunctionTypeParams = function () {
  var ret = { params: [], rest: null };
  while (this.type === tt.name) {
    ret.params.push(this.flow_parseFunctionTypeParam());
    if (this.type !== tt.parenR) {
      this.expect(tt.comma);
    }
  }
  if (this.eat(tt.ellipsis)) {
    ret.rest = this.flow_parseFunctionTypeParam();
  }
  return ret;
};

pp.flow_identToTypeAnnotation = function (start, node, id) {
  switch (id.name) {
    case "any":
      return this.finishNode(node, "AnyTypeAnnotation");

    case "bool":
    case "boolean":
      return this.finishNode(node, "BooleanTypeAnnotation");

    case "number":
      return this.finishNode(node, "NumberTypeAnnotation");

    case "string":
      return this.finishNode(node, "StringTypeAnnotation");

    default:
      return this.flow_parseGenericType(start, id);
  }
};

// The parsing of types roughly parallels the parsing of expressions, and
// primary types are kind of like primary expressions...they're the
// primitives with which other types are constructed.
pp.flow_parsePrimaryType = function () {
  var typeIdentifier = null;
  var params = null;
  var returnType = null;
  var start = this.markPosition();
  var node = this.startNode();
  var rest = null;
  var tmp;
  var typeParameters;
  var token;
  var type;
  var isGroupedType = false;

  switch (this.type) {
    case tt.name:
      return this.flow_identToTypeAnnotation(start, node, this.parseIdent());

    case tt.braceL:
      return this.flow_parseObjectType();

    case tt.bracketL:
      return this.flow_parseTupleType();

    case tt.relational:
      if (this.value === "<") {
        node.typeParameters = this.flow_parseTypeParameterDeclaration();
        this.expect(tt.parenL);
        tmp = this.flow_parseFunctionTypeParams();
        node.params = tmp.params;
        node.rest = tmp.rest;
        this.expect(tt.parenR);

        this.expect(tt.arrow);

        node.returnType = this.flow_parseType();

        return this.finishNode(node, "FunctionTypeAnnotation");
      }

    case tt.parenL:
      this.next();

      // Check to see if this is actually a grouped type
      if (this.type !== tt.parenR && this.type !== tt.ellipsis) {
        if (this.type === tt.name) {
          var token = this.lookahead().type;
          isGroupedType = token !== tt.question && token !== tt.colon;
        } else {
          isGroupedType = true;
        }
      }

      if (isGroupedType) {
        type = this.flow_parseType();
        this.expect(tt.parenR);

        // If we see a => next then someone was probably confused about
        // function types, so we can provide a better error message
        if (this.eat(tt.arrow)) {
          this.raise(node, "Unexpected token =>. It looks like " + "you are trying to write a function type, but you ended up " + "writing a grouped type followed by an =>, which is a syntax " + "error. Remember, function type parameters are named so function " + "types look like (name1: type1, name2: type2) => returnType. You " + "probably wrote (type1) => returnType");
        }

        return type;
      }

      tmp = this.flow_parseFunctionTypeParams();
      node.params = tmp.params;
      node.rest = tmp.rest;

      this.expect(tt.parenR);

      this.expect(tt.arrow);

      node.returnType = this.flow_parseType();
      node.typeParameters = null;

      return this.finishNode(node, "FunctionTypeAnnotation");

    case tt.string:
      node.value = this.value;
      node.raw = this.input.slice(this.start, this.end);
      this.next();
      return this.finishNode(node, "StringLiteralTypeAnnotation");

    default:
      if (this.type.keyword) {
        switch (this.type.keyword) {
          case "void":
            return this.flow_parseVoidType();

          case "typeof":
            return this.flow_parseTypeofType();
        }
      }
  }

  this.unexpected();
};

pp.flow_parsePostfixType = function () {
  var node = this.startNode();
  var type = node.elementType = this.flow_parsePrimaryType();
  if (this.type === tt.bracketL) {
    this.expect(tt.bracketL);
    this.expect(tt.bracketR);
    return this.finishNode(node, "ArrayTypeAnnotation");
  }
  return type;
};

pp.flow_parsePrefixType = function () {
  var node = this.startNode();
  if (this.eat(tt.question)) {
    node.typeAnnotation = this.flow_parsePrefixType();
    return this.finishNode(node, "NullableTypeAnnotation");
  }
  return this.flow_parsePostfixType();
};

pp.flow_parseIntersectionType = function () {
  var node = this.startNode();
  var type = this.flow_parsePrefixType();
  node.types = [type];
  while (this.eat(tt.bitwiseAND)) {
    node.types.push(this.flow_parsePrefixType());
  }
  return node.types.length === 1 ? type : this.finishNode(node, "IntersectionTypeAnnotation");
};

pp.flow_parseUnionType = function () {
  var node = this.startNode();
  var type = this.flow_parseIntersectionType();
  node.types = [type];
  while (this.eat(tt.bitwiseOR)) {
    node.types.push(this.flow_parseIntersectionType());
  }
  return node.types.length === 1 ? type : this.finishNode(node, "UnionTypeAnnotation");
};

pp.flow_parseType = function () {
  var oldInType = this.inType;
  this.inType = true;
  var type = this.flow_parseUnionType();
  this.inType = oldInType;
  return type;
};

pp.flow_parseTypeAnnotation = function () {
  var node = this.startNode();

  var oldInType = this.inType;
  this.inType = true;
  this.expect(tt.colon);
  node.typeAnnotation = this.flow_parseType();
  this.inType = oldInType;

  return this.finishNode(node, "TypeAnnotation");
};

pp.flow_parseTypeAnnotatableIdentifier = function (requireTypeAnnotation, canBeOptionalParam) {
  var node = this.startNode();
  var ident = this.parseIdent();
  var isOptionalParam = false;

  if (canBeOptionalParam && this.eat(tt.question)) {
    this.expect(tt.question);
    isOptionalParam = true;
  }

  if (requireTypeAnnotation || this.type === tt.colon) {
    ident.typeAnnotation = this.flow_parseTypeAnnotation();
    this.finishNode(ident, ident.type);
  }

  if (isOptionalParam) {
    ident.optional = true;
    this.finishNode(ident, ident.type);
  }

  return ident;
};

acorn.plugins.flow = function (instance) {
  // function name(): string {}
  instance.extend("parseFunctionBody", function (inner) {
    return function (node, allowExpression) {
      if (this.type === tt.colon) {
        node.returnType = this.flow_parseTypeAnnotation();
      }

      return inner.call(this, node, allowExpression);
    };
  });

  instance.extend("parseStatement", function (inner) {
    return function (declaration, topLevel) {
      // strict mode handling of `interface` since it's a reserved word
      if (this.strict && this.type === tt.name && this.value === "interface") {
        var node = this.startNode();
        this.next();
        return this.flow_parseInterface(node);
      } else {
        return inner.call(this, declaration, topLevel);
      }
    };
  });

  instance.extend("parseExpressionStatement", function (inner) {
    return function (node, expr) {
      if (expr.type === "Identifier") {
        if (expr.name === "declare") {
          if (this.type === tt._class || this.type === tt.name || this.type === tt._function || this.type === tt._var) {
            return this.flow_parseDeclare(node);
          }
        } else if (this.type === tt.name) {
          if (expr.name === "interface") {
            return this.flow_parseInterface(node);
          } else if (expr.name === "type") {
            return this.flow_parseTypeAlias(node);
          }
        }
      }

      return inner.call(this, node, expr);
    };
  });

  instance.extend("shouldParseExportDeclaration", function (inner) {
    return function () {
      return this.isContextual("type") || inner.call(this);
    };
  });

  instance.extend("parseParenItem", function (inner) {
    return function (node, start) {
      if (this.type === tt.colon) {
        var typeCastNode = this.startNodeAt(start);
        typeCastNode.expression = node;
        typeCastNode.typeAnnotation = this.flow_parseTypeAnnotation();
        return this.finishNode(typeCastNode, "TypeCastExpression");
      } else {
        return node;
      }
    };
  });

  instance.extend("parseClassId", function (inner) {
    return function (node, isStatement) {
      inner.call(this, node, isStatement);
      if (this.isRelational("<")) {
        node.typeParameters = this.flow_parseTypeParameterDeclaration();
      }
    };
  });

  instance.extend("readToken", function (inner) {
    return function (code) {
      if (this.inType && (code === 62 || code === 60)) {
        return this.finishOp(tt.relational, 1);
      } else {
        return inner.call(this, code);
      }
    };
  });

  instance.extend("jsx_readToken", function (inner) {
    return function () {
      if (!this.inType) return inner.call(this);
    };
  });

  instance.extend("parseParenArrowList", function (inner) {
    return function (start, exprList, isAsync) {
      for (var i = 0; i < exprList.length; i++) {
        var listItem = exprList[i];
        if (listItem.type === "TypeCastExpression") {
          var expr = listItem.expression;
          expr.typeAnnotation = listItem.typeAnnotation;
          exprList[i] = expr;
        }
      }
      return inner.call(this, start, exprList, isAsync);
    };
  });

  instance.extend("parseClassProperty", function (inner) {
    return function (node) {
      if (this.type === tt.colon) {
        node.typeAnnotation = this.flow_parseTypeAnnotation();
      }
      return inner.call(this, node);
    };
  });
  instance.extend("isClassProperty", function (inner) {
    return function () {
      return this.type === tt.colon || inner.call(this);
    };
  });

  instance.extend("parseClassMethod", function (inner) {
    return function (classBody, method, isGenerator, isAsync) {
      var typeParameters;
      if (this.isRelational("<")) {
        typeParameters = this.flow_parseTypeParameterDeclaration();
      }
      method.value = this.parseMethod(isGenerator, isAsync);
      method.value.typeParameters = typeParameters;
      classBody.body.push(this.finishNode(method, "MethodDefinition"));
    };
  });

  instance.extend("parseClassSuper", function (inner) {
    return function (node, isStatement) {
      inner.call(this, node, isStatement);
      if (node.superClass && this.isRelational("<")) {
        node.superTypeParameters = this.flow_parseTypeParameterInstantiation();
      }
      if (this.isContextual("implements")) {
        this.next();
        var implemented = node["implements"] = [];
        do {
          var node = this.startNode();
          node.id = this.parseIdent();
          if (this.isRelational("<")) {
            node.typeParameters = this.flow_parseTypeParameterInstantiation();
          } else {
            node.typeParameters = null;
          }
          implemented.push(this.finishNode(node, "ClassImplements"));
        } while (this.eat(tt.comma));
      }
    };
  });

  instance.extend("parseObjPropValue", function (inner) {
    return function (prop) {
      var typeParameters;
      if (this.isRelational("<")) {
        typeParameters = this.flow_parseTypeParameterDeclaration();
        if (this.type !== tt.parenL) this.unexpected();
      }
      inner.apply(this, arguments);
      prop.value.typeParameters = typeParameters;
    };
  });

  instance.extend("parseAssignableListItemTypes", function (inner) {
    return function (param) {
      if (this.eat(tt.question)) {
        param.optional = true;
      }
      if (this.type === tt.colon) {
        param.typeAnnotation = this.flow_parseTypeAnnotation();
      }
      this.finishNode(param, param.type);
      return param;
    };
  });

  instance.extend("parseImportSpecifiers", function (inner) {
    return function (node) {
      node.isType = false;
      if (this.isContextual("type")) {
        var start = this.markPosition();
        var typeId = this.parseIdent();
        if (this.type === tt.name && this.value !== "from" || this.type === tt.braceL || this.type === tt.star) {
          node.isType = true;
        } else {
          node.specifiers.push(this.parseImportSpecifierDefault(typeId, start));
          if (this.isContextual("from")) return;
          this.eat(tt.comma);
        }
      }
      inner.call(this, node);
    };
  });

  // function foo<T>() {}
  instance.extend("parseFunctionParams", function (inner) {
    return function (node) {
      if (this.isRelational("<")) {
        node.typeParameters = this.flow_parseTypeParameterDeclaration();
      }
      inner.call(this, node);
    };
  });

  // var foo: string = bar
  instance.extend("parseVarHead", function (inner) {
    return function (decl) {
      inner.call(this, decl);
      if (this.type === tt.colon) {
        decl.id.typeAnnotation = this.flow_parseTypeAnnotation();
        this.finishNode(decl.id, decl.id.type);
      }
    };
  });
};
},{"../src/index":5}],3:[function(require,module,exports){
// A recursive descent parser operates by defining functions for all
// syntactic elements, and recursively calling those, each function
// advancing the input stream and returning an AST node. Precedence
// of constructs (for example, the fact that `!x[1]` means `!(x[1])`
// instead of `(!x)[1]` is handled by the fact that the parser
// function that parses unary prefix operators is called first, and
// in turn calls the function that parses `[]` subscripts — that
// way, it'll receive the node for `x[1]` already parsed, and wraps
// *that* in the unary operator node.
//
// Acorn uses an [operator precedence parser][opp] to handle binary
// operator precedence, because it is much more compact than using
// the technique outlined above, which uses different, nesting
// functions to specify precedence, for all of the ten binary
// precedence levels that JavaScript defines.
//
// [opp]: http://en.wikipedia.org/wiki/Operator-precedence_parser

"use strict";

var _tokentype = require("./tokentype");

var _state = require("./state");

var _identifier = require("./identifier");

var _util = require("./util");

var pp = _state.Parser.prototype;

// Check if property name clashes with already added.
// Object/class getters and setters are not allowed to clash —
// either with each other or with an init property — and in
// strict mode, init properties are also not allowed to be repeated.

pp.checkPropClash = function (prop, propHash) {
  if (this.options.ecmaVersion >= 6) return;
  var key = prop.key,
      name = undefined;
  switch (key.type) {
    case "Identifier":
      name = key.name;break;
    case "Literal":
      name = String(key.value);break;
    default:
      return;
  }
  var kind = prop.kind || "init",
      other = undefined;
  if ((0, _util.has)(propHash, name)) {
    other = propHash[name];
    var isGetSet = kind !== "init";
    if ((this.strict || isGetSet) && other[kind] || !(isGetSet ^ other.init)) this.raise(key.start, "Redefinition of property");
  } else {
    other = propHash[name] = {
      init: false,
      get: false,
      set: false
    };
  }
  other[kind] = true;
};

// ### Expression parsing

// These nest, from the most general expression type at the top to
// 'atomic', nondivisible expression types at the bottom. Most of
// the functions will simply let the function(s) below them parse,
// and, *if* the syntactic construct they handle is present, wrap
// the AST node that the inner parser gave them in another node.

// Parse a full expression. The optional arguments are used to
// forbid the `in` operator (in for loops initalization expressions)
// and provide reference for storing '=' operator inside shorthand
// property assignment in contexts where both object expression
// and object pattern might appear (so it's possible to raise
// delayed syntax error at correct position).

pp.parseExpression = function (noIn, refShorthandDefaultPos) {
  var start = this.markPosition();
  var expr = this.parseMaybeAssign(noIn, refShorthandDefaultPos);
  if (this.type === _tokentype.types.comma) {
    var node = this.startNodeAt(start);
    node.expressions = [expr];
    while (this.eat(_tokentype.types.comma)) node.expressions.push(this.parseMaybeAssign(noIn, refShorthandDefaultPos));
    return this.finishNode(node, "SequenceExpression");
  }
  return expr;
};

// Parse an assignment expression. This includes applications of
// operators like `+=`.

pp.parseMaybeAssign = function (noIn, refShorthandDefaultPos, afterLeftParse) {
  if (this.type == _tokentype.types._yield && this.inGenerator) return this.parseYield();

  var failOnShorthandAssign = undefined;
  if (!refShorthandDefaultPos) {
    refShorthandDefaultPos = { start: 0 };
    failOnShorthandAssign = true;
  } else {
    failOnShorthandAssign = false;
  }
  var start = this.markPosition();
  if (this.type == _tokentype.types.parenL || this.type == _tokentype.types.name) this.potentialArrowAt = this.start;
  var left = this.parseMaybeConditional(noIn, refShorthandDefaultPos);
  if (afterLeftParse) left = afterLeftParse.call(this, left, start);
  if (this.type.isAssign) {
    var node = this.startNodeAt(start);
    node.operator = this.value;
    node.left = this.type === _tokentype.types.eq ? this.toAssignable(left) : left;
    refShorthandDefaultPos.start = 0; // reset because shorthand default was used correctly
    this.checkLVal(left);
    if (left.parenthesizedExpression) {
      var errorMsg = undefined;
      if (left.type === "ObjectPattern") {
        errorMsg = "`({a}) = 0` use `({a} = 0)`";
      } else if (left.type === "ArrayPattern") {
        errorMsg = "`([a]) = 0` use `([a] = 0)`";
      }
      if (errorMsg) {
        this.raise(left.start, "You're trying to assign to a parenthesized expression, eg. instead of " + errorMsg);
      }
    }
    this.next();
    node.right = this.parseMaybeAssign(noIn);
    return this.finishNode(node, "AssignmentExpression");
  } else if (failOnShorthandAssign && refShorthandDefaultPos.start) {
    this.unexpected(refShorthandDefaultPos.start);
  }
  return left;
};

// Parse a ternary conditional (`?:`) operator.

pp.parseMaybeConditional = function (noIn, refShorthandDefaultPos) {
  var start = this.markPosition();
  var expr = this.parseExprOps(noIn, refShorthandDefaultPos);
  if (refShorthandDefaultPos && refShorthandDefaultPos.start) return expr;
  if (this.eat(_tokentype.types.question)) {
    var node = this.startNodeAt(start);
    node.test = expr;
    node.consequent = this.parseMaybeAssign();
    this.expect(_tokentype.types.colon);
    node.alternate = this.parseMaybeAssign(noIn);
    return this.finishNode(node, "ConditionalExpression");
  }
  return expr;
};

// Start the precedence parser.

pp.parseExprOps = function (noIn, refShorthandDefaultPos) {
  var start = this.markPosition();
  var expr = this.parseMaybeUnary(refShorthandDefaultPos);
  if (refShorthandDefaultPos && refShorthandDefaultPos.start) return expr;
  return this.parseExprOp(expr, start, -1, noIn);
};

// Parse binary operators with the operator precedence parsing
// algorithm. `left` is the left-hand side of the operator.
// `minPrec` provides context that allows the function to stop and
// defer further parser to one of its callers when it encounters an
// operator that has a lower precedence than the set it is parsing.

pp.parseExprOp = function (left, leftStart, minPrec, noIn) {
  var prec = this.type.binop;
  if (prec != null && (!noIn || this.type !== _tokentype.types._in)) {
    if (prec > minPrec) {
      var node = this.startNodeAt(leftStart);
      node.left = left;
      node.operator = this.value;
      var op = this.type;
      this.next();
      var _start = this.markPosition();
      node.right = this.parseExprOp(this.parseMaybeUnary(), _start, op.rightAssociative ? prec - 1 : prec, noIn);
      this.finishNode(node, op === _tokentype.types.logicalOR || op === _tokentype.types.logicalAND ? "LogicalExpression" : "BinaryExpression");
      return this.parseExprOp(node, leftStart, minPrec, noIn);
    }
  }
  return left;
};

// Parse unary operators, both prefix and postfix.

pp.parseMaybeUnary = function (refShorthandDefaultPos) {
  if (this.type.prefix) {
    var node = this.startNode(),
        update = this.type === _tokentype.types.incDec;
    node.operator = this.value;
    node.prefix = true;
    this.next();
    node.argument = this.parseMaybeUnary();
    if (refShorthandDefaultPos && refShorthandDefaultPos.start) this.unexpected(refShorthandDefaultPos.start);
    if (update) this.checkLVal(node.argument);else if (this.strict && node.operator === "delete" && node.argument.type === "Identifier") this.raise(node.start, "Deleting local variable in strict mode");
    return this.finishNode(node, update ? "UpdateExpression" : "UnaryExpression");
  }
  var start = this.markPosition();
  var expr = this.parseExprSubscripts(refShorthandDefaultPos);
  if (refShorthandDefaultPos && refShorthandDefaultPos.start) return expr;
  while (this.type.postfix && !this.canInsertSemicolon()) {
    var node = this.startNodeAt(start);
    node.operator = this.value;
    node.prefix = false;
    node.argument = expr;
    this.checkLVal(expr);
    this.next();
    expr = this.finishNode(node, "UpdateExpression");
  }
  return expr;
};

// Parse call, dot, and `[]`-subscript expressions.

pp.parseExprSubscripts = function (refShorthandDefaultPos) {
  var start = this.markPosition();
  var expr = this.parseExprAtom(refShorthandDefaultPos);
  if (refShorthandDefaultPos && refShorthandDefaultPos.start) return expr;
  return this.parseSubscripts(expr, start);
};

pp.parseSubscripts = function (base, start, noCalls) {
  if (!noCalls && this.eat(_tokentype.types.doubleColon)) {
    var node = this.startNodeAt(start);
    node.object = base;
    node.callee = this.parseNoCallExpr();
    return this.parseSubscripts(this.finishNode(node, "BindExpression"), start, noCalls);
  } else if (this.eat(_tokentype.types.dot)) {
    var node = this.startNodeAt(start);
    node.object = base;
    node.property = this.parseIdent(true);
    node.computed = false;
    return this.parseSubscripts(this.finishNode(node, "MemberExpression"), start, noCalls);
  } else if (this.eat(_tokentype.types.bracketL)) {
    var node = this.startNodeAt(start);
    node.object = base;
    node.property = this.parseExpression();
    node.computed = true;
    this.expect(_tokentype.types.bracketR);
    return this.parseSubscripts(this.finishNode(node, "MemberExpression"), start, noCalls);
  } else if (!noCalls && this.eat(_tokentype.types.parenL)) {
    var node = this.startNodeAt(start);
    node.callee = base;
    node.arguments = this.parseExprList(_tokentype.types.parenR, this.options.features["es7.trailingFunctionCommas"]);
    return this.parseSubscripts(this.finishNode(node, "CallExpression"), start, noCalls);
  } else if (this.type === _tokentype.types.backQuote) {
    var node = this.startNodeAt(start);
    node.tag = base;
    node.quasi = this.parseTemplate();
    return this.parseSubscripts(this.finishNode(node, "TaggedTemplateExpression"), start, noCalls);
  }return base;
};

// Parse a no-call expression (like argument of `new` or `::` operators).

pp.parseNoCallExpr = function () {
  var start = this.markPosition();
  return this.parseSubscripts(this.parseExprAtom(), start, true);
};

// Parse an atomic expression — either a single token that is an
// expression, an expression started by a keyword like `function` or
// `new`, or an expression wrapped in punctuation like `()`, `[]`,
// or `{}`.

pp.parseExprAtom = function (refShorthandDefaultPos) {
  var node = undefined,
      canBeArrow = this.potentialArrowAt == this.start;
  switch (this.type) {
    case _tokentype.types._this:
    case _tokentype.types._super:
      var type = this.type === _tokentype.types._this ? "ThisExpression" : "Super";
      node = this.startNode();
      this.next();
      return this.finishNode(node, type);

    case _tokentype.types._yield:
      if (this.inGenerator) this.unexpected();

    case _tokentype.types._do:
      if (this.options.features["es7.doExpressions"]) {
        var _node = this.startNode();
        this.next();
        _node.body = this.parseBlock();
        return this.finishNode(_node, "DoExpression");
      }

    case _tokentype.types.name:
      var start = this.markPosition();
      node = this.startNode();
      var id = this.parseIdent(this.type !== _tokentype.types.name);

      //
      if (this.options.features["es7.asyncFunctions"]) {
        // async functions!
        if (id.name === "async") {
          // arrow functions
          if (this.type === _tokentype.types.parenL) {
            var expr = this.parseParenAndDistinguishExpression(start, true, true);
            if (expr && expr.type === "ArrowFunctionExpression") {
              return expr;
            } else {
              node.callee = id;
              if (!expr) {
                node.arguments = [];
              } else if (expr.type === "SequenceExpression") {
                node.arguments = expr.expressions;
              } else {
                node.arguments = [expr];
              }
              return this.parseSubscripts(this.finishNode(node, "CallExpression"), start);
            }
          } else if (this.type === _tokentype.types.name) {
            id = this.parseIdent();
            this.expect(_tokentype.types.arrow);
            return this.parseArrowExpression(node, [id], true);
          }

          // normal functions
          if (this.type === _tokentype.types._function && !this.canInsertSemicolon()) {
            this.next();
            return this.parseFunction(node, false, false, true);
          }
        } else if (id.name === "await") {
          if (this.inAsync) return this.parseAwait(node);
        }
      }
      //

      if (canBeArrow && !this.canInsertSemicolon() && this.eat(_tokentype.types.arrow)) return this.parseArrowExpression(this.startNodeAt(start), [id]);
      return id;

    case _tokentype.types.regexp:
      var value = this.value;
      node = this.parseLiteral(value.value);
      node.regex = { pattern: value.pattern, flags: value.flags };
      return node;

    case _tokentype.types.num:case _tokentype.types.string:
      return this.parseLiteral(this.value);

    case _tokentype.types._null:case _tokentype.types._true:case _tokentype.types._false:
      node = this.startNode();
      node.value = this.type === _tokentype.types._null ? null : this.type === _tokentype.types._true;
      node.raw = this.type.keyword;
      this.next();
      return this.finishNode(node, "Literal");

    case _tokentype.types.parenL:
      return this.parseParenAndDistinguishExpression(null, null, canBeArrow);

    case _tokentype.types.bracketL:
      node = this.startNode();
      this.next();
      // check whether this is array comprehension or regular array
      if ((this.options.ecmaVersion >= 7 || this.options.features["es7.comprehensions"]) && this.type === _tokentype.types._for) {
        return this.parseComprehension(node, false);
      }
      node.elements = this.parseExprList(_tokentype.types.bracketR, true, true, refShorthandDefaultPos);
      return this.finishNode(node, "ArrayExpression");

    case _tokentype.types.braceL:
      return this.parseObj(false, refShorthandDefaultPos);

    case _tokentype.types._function:
      node = this.startNode();
      this.next();
      return this.parseFunction(node, false);

    case _tokentype.types.at:
      this.parseDecorators();

    case _tokentype.types._class:
      node = this.startNode();
      this.takeDecorators(node);
      return this.parseClass(node, false);

    case _tokentype.types._new:
      return this.parseNew();

    case _tokentype.types.backQuote:
      return this.parseTemplate();

    case _tokentype.types.doubleColon:
      node = this.startNode();
      this.next();
      node.object = null;
      var callee = node.callee = this.parseNoCallExpr();
      if (callee.type !== "MemberExpression") this.raise(callee.start, "Binding should be performed on object property.");
      return this.finishNode(node, "BindExpression");

    default:
      this.unexpected();
  }
};

pp.parseLiteral = function (value) {
  var node = this.startNode();
  node.value = value;
  node.raw = this.input.slice(this.start, this.end);
  this.next();
  return this.finishNode(node, "Literal");
};

pp.parseParenExpression = function () {
  this.expect(_tokentype.types.parenL);
  var val = this.parseExpression();
  this.expect(_tokentype.types.parenR);
  return val;
};

pp.parseParenAndDistinguishExpression = function (start, isAsync, canBeArrow) {
  start = start || this.markPosition();
  var val = undefined;
  if (this.options.ecmaVersion >= 6) {
    this.next();

    if ((this.options.features["es7.comprehensions"] || this.options.ecmaVersion >= 7) && this.type === _tokentype.types._for) {
      return this.parseComprehension(this.startNodeAt(start), true);
    }

    var innerStart = this.markPosition(),
        exprList = [],
        first = true;
    var refShorthandDefaultPos = { start: 0 },
        spreadStart = undefined,
        innerParenStart = undefined;
    while (this.type !== _tokentype.types.parenR) {
      first ? first = false : this.expect(_tokentype.types.comma);
      if (this.type === _tokentype.types.ellipsis) {
        var spreadNodeStart = this.markPosition();
        spreadStart = this.start;
        exprList.push(this.parseParenItem(this.parseRest(), spreadNodeStart));
        break;
      } else {
        if (this.type === _tokentype.types.parenL && !innerParenStart) {
          innerParenStart = this.start;
        }
        exprList.push(this.parseMaybeAssign(false, refShorthandDefaultPos, this.parseParenItem));
      }
    }
    var innerEnd = this.markPosition();
    this.expect(_tokentype.types.parenR);

    if (canBeArrow && !this.canInsertSemicolon() && this.eat(_tokentype.types.arrow)) {
      if (innerParenStart) this.unexpected(innerParenStart);
      return this.parseParenArrowList(start, exprList, isAsync);
    }

    if (!exprList.length) {
      if (isAsync) {
        return;
      } else {
        this.unexpected(this.lastTokStart);
      }
    }
    if (spreadStart) this.unexpected(spreadStart);
    if (refShorthandDefaultPos.start) this.unexpected(refShorthandDefaultPos.start);

    if (exprList.length > 1) {
      val = this.startNodeAt(innerStart);
      val.expressions = exprList;
      this.finishNodeAt(val, "SequenceExpression", innerEnd);
    } else {
      val = exprList[0];
    }
  } else {
    val = this.parseParenExpression();
  }

  if (this.options.preserveParens) {
    var par = this.startNodeAt(start);
    par.expression = val;
    return this.finishNode(par, "ParenthesizedExpression");
  } else {
    val.parenthesizedExpression = true;
    return val;
  }
};

pp.parseParenArrowList = function (start, exprList, isAsync) {
  return this.parseArrowExpression(this.startNodeAt(start), exprList, isAsync);
};

pp.parseParenItem = function (node, start) {
  return node;
};

// New's precedence is slightly tricky. It must allow its argument
// to be a `[]` or dot subscript expression, but not a call — at
// least, not without wrapping it in parentheses. Thus, it uses the

var empty = [];

pp.parseNew = function () {
  var node = this.startNode();
  var meta = this.parseIdent(true);
  if (this.options.ecmaVersion >= 6 && this.eat(_tokentype.types.dot)) {
    node.meta = meta;
    node.property = this.parseIdent(true);
    if (node.property.name !== "target") this.raise(node.property.start, "The only valid meta property for new is new.target");
    return this.finishNode(node, "MetaProperty");
  }
  node.callee = this.parseNoCallExpr();
  if (this.eat(_tokentype.types.parenL)) node.arguments = this.parseExprList(_tokentype.types.parenR, this.options.features["es7.trailingFunctionCommas"]);else node.arguments = empty;
  return this.finishNode(node, "NewExpression");
};

// Parse template expression.

pp.parseTemplateElement = function () {
  var elem = this.startNode();
  elem.value = {
    raw: this.input.slice(this.start, this.end),
    cooked: this.value
  };
  this.next();
  elem.tail = this.type === _tokentype.types.backQuote;
  return this.finishNode(elem, "TemplateElement");
};

pp.parseTemplate = function () {
  var node = this.startNode();
  this.next();
  node.expressions = [];
  var curElt = this.parseTemplateElement();
  node.quasis = [curElt];
  while (!curElt.tail) {
    this.expect(_tokentype.types.dollarBraceL);
    node.expressions.push(this.parseExpression());
    this.expect(_tokentype.types.braceR);
    node.quasis.push(curElt = this.parseTemplateElement());
  }
  this.next();
  return this.finishNode(node, "TemplateLiteral");
};

// Parse an object literal or binding pattern.

pp.parseObj = function (isPattern, refShorthandDefaultPos) {
  var node = this.startNode(),
      first = true,
      propHash = {};
  node.properties = [];
  var decorators = [];
  this.next();
  while (!this.eat(_tokentype.types.braceR)) {
    if (!first) {
      this.expect(_tokentype.types.comma);
      if (this.afterTrailingComma(_tokentype.types.braceR)) break;
    } else first = false;
    while (this.type === _tokentype.types.at) {
      decorators.push(this.parseDecorator());
    }
    var prop = this.startNode(),
        isGenerator = false,
        isAsync = false,
        _start2 = undefined;
    if (decorators.length) {
      prop.decorators = decorators;
      decorators = [];
    }
    if (this.options.features["es7.objectRestSpread"] && this.type === _tokentype.types.ellipsis) {
      prop = this.parseSpread();
      prop.type = "SpreadProperty";
      node.properties.push(prop);
      continue;
    }
    if (this.options.ecmaVersion >= 6) {
      prop.method = false;
      prop.shorthand = false;
      if (isPattern || refShorthandDefaultPos) _start2 = this.markPosition();
      if (!isPattern) isGenerator = this.eat(_tokentype.types.star);
    }
    if (this.options.features["es7.asyncFunctions"] && this.isContextual("async")) {
      if (isGenerator || isPattern) this.unexpected();
      var asyncId = this.parseIdent();
      if (this.type === _tokentype.types.colon || this.type === _tokentype.types.parenL) {
        prop.key = asyncId;
      } else {
        isAsync = true;
        this.parsePropertyName(prop);
      }
    } else {
      this.parsePropertyName(prop);
    }
    this.parseObjPropValue(prop, _start2, isGenerator, isAsync, isPattern, refShorthandDefaultPos);
    this.checkPropClash(prop, propHash);
    node.properties.push(this.finishNode(prop, "Property"));
  }
  if (decorators.length) {
    this.raise(this.start, "You have trailing decorators with no property");
  }
  return this.finishNode(node, isPattern ? "ObjectPattern" : "ObjectExpression");
};

pp.parseObjPropValue = function (prop, start, isGenerator, isAsync, isPattern, refShorthandDefaultPos) {
  if (this.eat(_tokentype.types.colon)) {
    prop.value = isPattern ? this.parseMaybeDefault() : this.parseMaybeAssign(false, refShorthandDefaultPos);
    prop.kind = "init";
  } else if (this.options.ecmaVersion >= 6 && this.type === _tokentype.types.parenL) {
    if (isPattern) this.unexpected();
    prop.kind = "init";
    prop.method = true;
    prop.value = this.parseMethod(isGenerator, isAsync);
  } else if (this.options.ecmaVersion >= 5 && !prop.computed && prop.key.type === "Identifier" && (prop.key.name === "get" || prop.key.name === "set") && (this.type != _tokentype.types.comma && this.type != _tokentype.types.braceR)) {
    if (isGenerator || isAsync || isPattern) this.unexpected();
    prop.kind = prop.key.name;
    this.parsePropertyName(prop);
    prop.value = this.parseMethod(false);
  } else if (this.options.ecmaVersion >= 6 && !prop.computed && prop.key.type === "Identifier") {
    prop.kind = "init";
    if (isPattern) {
      if (this.isKeyword(prop.key.name) || this.strict && (_identifier.reservedWords.strictBind(prop.key.name) || _identifier.reservedWords.strict(prop.key.name)) || !this.options.allowReserved && this.isReservedWord(prop.key.name)) this.raise(prop.key.start, "Binding " + prop.key.name);
      prop.value = this.parseMaybeDefault(start, prop.key);
    } else if (this.type === _tokentype.types.eq && refShorthandDefaultPos) {
      if (!refShorthandDefaultPos.start) refShorthandDefaultPos.start = this.start;
      prop.value = this.parseMaybeDefault(start, prop.key);
    } else {
      prop.value = prop.key;
    }
    prop.shorthand = true;
  } else this.unexpected();
};

pp.parsePropertyName = function (prop) {
  if (this.options.ecmaVersion >= 6) {
    if (this.eat(_tokentype.types.bracketL)) {
      prop.computed = true;
      prop.key = this.parseMaybeAssign();
      this.expect(_tokentype.types.bracketR);
      return;
    } else {
      prop.computed = false;
    }
  }
  prop.key = this.type === _tokentype.types.num || this.type === _tokentype.types.string ? this.parseExprAtom() : this.parseIdent(true);
};

// Initialize empty function node.

pp.initFunction = function (node, isAsync) {
  node.id = null;
  if (this.options.ecmaVersion >= 6) {
    node.generator = false;
    node.expression = false;
  }
  if (this.options.features["es7.asyncFunctions"]) {
    node.async = !!isAsync;
  }
};

// Parse object or class method.

pp.parseMethod = function (isGenerator, isAsync) {
  var node = this.startNode();
  this.initFunction(node, isAsync);
  this.expect(_tokentype.types.parenL);
  node.params = this.parseBindingList(_tokentype.types.parenR, false, this.options.features["es7.trailingFunctionCommas"]);
  if (this.options.ecmaVersion >= 6) {
    node.generator = isGenerator;
  }
  this.parseFunctionBody(node);
  return this.finishNode(node, "FunctionExpression");
};

// Parse arrow function expression with given parameters.

pp.parseArrowExpression = function (node, params, isAsync) {
  this.initFunction(node, isAsync);
  node.params = this.toAssignableList(params, true);
  this.parseFunctionBody(node, true);
  return this.finishNode(node, "ArrowFunctionExpression");
};

// Parse function body and check parameters.

pp.parseFunctionBody = function (node, allowExpression) {
  var isExpression = allowExpression && this.type !== _tokentype.types.braceL;

  var oldInAsync = this.inAsync;
  this.inAsync = node.async;
  if (isExpression) {
    node.body = this.parseMaybeAssign();
    node.expression = true;
  } else {
    // Start a new scope with regard to labels and the `inFunction`
    // flag (restore them to their old value afterwards).
    var oldInFunc = this.inFunction,
        oldInGen = this.inGenerator,
        oldLabels = this.labels;
    this.inFunction = true;this.inGenerator = node.generator;this.labels = [];
    node.body = this.parseBlock(true);
    node.expression = false;
    this.inFunction = oldInFunc;this.inGenerator = oldInGen;this.labels = oldLabels;
  }
  this.inAsync = oldInAsync;

  // If this is a strict mode function, verify that argument names
  // are not repeated, and it does not try to bind the words `eval`
  // or `arguments`.
  if (this.strict || !isExpression && node.body.body.length && this.isUseStrict(node.body.body[0])) {
    var nameHash = {},
        oldStrict = this.strict;
    this.strict = true;
    if (node.id) this.checkLVal(node.id, true);
    for (var i = 0; i < node.params.length; i++) {
      this.checkLVal(node.params[i], true, nameHash);
    }this.strict = oldStrict;
  }
};

// Parses a comma-separated list of expressions, and returns them as
// an array. `close` is the token type that ends the list, and
// `allowEmpty` can be turned on to allow subsequent commas with
// nothing in between them to be parsed as `null` (which is needed
// for array literals).

pp.parseExprList = function (close, allowTrailingComma, allowEmpty, refShorthandDefaultPos) {
  var elts = [],
      first = true;
  while (!this.eat(close)) {
    if (!first) {
      this.expect(_tokentype.types.comma);
      if (allowTrailingComma && this.afterTrailingComma(close)) break;
    } else first = false;

    if (allowEmpty && this.type === _tokentype.types.comma) {
      elts.push(null);
    } else {
      if (this.type === _tokentype.types.ellipsis) elts.push(this.parseSpread(refShorthandDefaultPos));else elts.push(this.parseMaybeAssign(false, refShorthandDefaultPos));
    }
  }
  return elts;
};

// Parse the next token as an identifier. If `liberal` is true (used
// when parsing properties), it will also convert keywords into
// identifiers.

pp.parseIdent = function (liberal) {
  var node = this.startNode();
  if (liberal && this.options.allowReserved == "never") liberal = false;
  if (this.type === _tokentype.types.name) {
    if (!liberal && (!this.options.allowReserved && this.isReservedWord(this.value) || this.strict && _identifier.reservedWords.strict(this.value) && (this.options.ecmaVersion >= 6 || this.input.slice(this.start, this.end).indexOf("\\") == -1))) this.raise(this.start, "The keyword '" + this.value + "' is reserved");
    node.name = this.value;
  } else if (liberal && this.type.keyword) {
    node.name = this.type.keyword;
  } else {
    this.unexpected();
  }
  this.next();
  return this.finishNode(node, "Identifier");
};

// Parses await expression inside async function.

pp.parseAwait = function (node) {
  if (this.eat(_tokentype.types.semi) || this.canInsertSemicolon()) {
    this.unexpected();
  }
  node.all = this.eat(_tokentype.types.star);
  node.argument = this.parseMaybeUnary();
  return this.finishNode(node, "AwaitExpression");
};

// Parses yield expression inside generator.

pp.parseYield = function () {
  var node = this.startNode();
  this.next();
  if (this.type == _tokentype.types.semi || this.canInsertSemicolon() || this.type != _tokentype.types.star && !this.type.startsExpr) {
    node.delegate = false;
    node.argument = null;
  } else {
    node.delegate = this.eat(_tokentype.types.star);
    node.argument = this.parseMaybeAssign();
  }
  return this.finishNode(node, "YieldExpression");
};

// Parses array and generator comprehensions.

pp.parseComprehension = function (node, isGenerator) {
  node.blocks = [];
  while (this.type === _tokentype.types._for) {
    var block = this.startNode();
    this.next();
    this.expect(_tokentype.types.parenL);
    block.left = this.parseBindingAtom();
    this.checkLVal(block.left, true);
    this.expectContextual("of");
    block.right = this.parseExpression();
    this.expect(_tokentype.types.parenR);
    node.blocks.push(this.finishNode(block, "ComprehensionBlock"));
  }
  node.filter = this.eat(_tokentype.types._if) ? this.parseParenExpression() : null;
  node.body = this.parseExpression();
  this.expect(isGenerator ? _tokentype.types.parenR : _tokentype.types.bracketR);
  node.generator = isGenerator;
  return this.finishNode(node, "ComprehensionExpression");
};
},{"./identifier":4,"./state":12,"./tokentype":16,"./util":17}],4:[function(require,module,exports){
"use strict";

exports.__esModule = true;

// Test whether a given character code starts an identifier.

exports.isIdentifierStart = isIdentifierStart;

// Test whether a given character is part of an identifier.

exports.isIdentifierChar = isIdentifierChar;
// This is a trick taken from Esprima. It turns out that, on
// non-Chrome browsers, to check whether a string is in a set, a
// predicate containing a big ugly `switch` statement is faster than
// a regular expression, and on Chrome the two are about on par.
// This function uses `eval` (non-lexical) to produce such a
// predicate from a space-separated string of words.
//
// It starts by sorting the words by length.

function makePredicate(words) {
  words = words.split(" ");
  return function (str) {
    return words.indexOf(str) >= 0;
  };
}

// Reserved word lists for various dialects of the language

var reservedWords = {
  3: makePredicate("abstract boolean byte char class double enum export extends final float goto implements import int interface long native package private protected public short static super synchronized throws transient volatile"),
  5: makePredicate("class enum extends super const export import"),
  6: makePredicate("enum await"),
  strict: makePredicate("implements interface let package private protected public static yield"),
  strictBind: makePredicate("eval arguments")
};

exports.reservedWords = reservedWords;
// And the keywords

var ecma5AndLessKeywords = "break case catch continue debugger default do else finally for function if return switch throw try var while with null true false instanceof typeof void delete new in this";

var keywords = {
  5: makePredicate(ecma5AndLessKeywords),
  6: makePredicate(ecma5AndLessKeywords + " let const class extends export import yield super")
};

exports.keywords = keywords;
// ## Character categories

// Big ugly regular expressions that match characters in the
// whitespace, identifier, and identifier-start categories. These
// are only applied when a character is found to actually have a
// code point above 128.
// Generated by `tools/generate-identifier-regex.js`.

var nonASCIIidentifierStartChars = "ªµºÀ-ÖØ-öø-ˁˆ-ˑˠ-ˤˬˮͰ-ʹͶͷͺ-ͽͿΆΈ-ΊΌΎ-ΡΣ-ϵϷ-ҁҊ-ԯԱ-Ֆՙա-ևא-תװ-ײؠ-يٮٯٱ-ۓەۥۦۮۯۺ-ۼۿܐܒ-ܯݍ-ޥޱߊ-ߪߴߵߺࠀ-ࠕࠚࠤࠨࡀ-ࡘࢠ-ࢲऄ-हऽॐक़-ॡॱ-ঀঅ-ঌএঐও-নপ-রলশ-হঽৎড়ঢ়য়-ৡৰৱਅ-ਊਏਐਓ-ਨਪ-ਰਲਲ਼ਵਸ਼ਸਹਖ਼-ੜਫ਼ੲ-ੴઅ-ઍએ-ઑઓ-નપ-રલળવ-હઽૐૠૡଅ-ଌଏଐଓ-ନପ-ରଲଳଵ-ହଽଡ଼ଢ଼ୟ-ୡୱஃஅ-ஊஎ-ஐஒ-கஙசஜஞடணதந-பம-ஹௐఅ-ఌఎ-ఐఒ-నప-హఽౘౙౠౡಅ-ಌಎ-ಐಒ-ನಪ-ಳವ-ಹಽೞೠೡೱೲഅ-ഌഎ-ഐഒ-ഺഽൎൠൡൺ-ൿඅ-ඖක-නඳ-රලව-ෆก-ะาำเ-ๆກຂຄງຈຊຍດ-ທນ-ຟມ-ຣລວສຫອ-ະາຳຽເ-ໄໆໜ-ໟༀཀ-ཇཉ-ཬྈ-ྌက-ဪဿၐ-ၕၚ-ၝၡၥၦၮ-ၰၵ-ႁႎႠ-ჅჇჍა-ჺჼ-ቈቊ-ቍቐ-ቖቘቚ-ቝበ-ኈኊ-ኍነ-ኰኲ-ኵኸ-ኾዀዂ-ዅወ-ዖዘ-ጐጒ-ጕጘ-ፚᎀ-ᎏᎠ-Ᏼᐁ-ᙬᙯ-ᙿᚁ-ᚚᚠ-ᛪᛮ-ᛸᜀ-ᜌᜎ-ᜑᜠ-ᜱᝀ-ᝑᝠ-ᝬᝮ-ᝰក-ឳៗៜᠠ-ᡷᢀ-ᢨᢪᢰ-ᣵᤀ-ᤞᥐ-ᥭᥰ-ᥴᦀ-ᦫᧁ-ᧇᨀ-ᨖᨠ-ᩔᪧᬅ-ᬳᭅ-ᭋᮃ-ᮠᮮᮯᮺ-ᯥᰀ-ᰣᱍ-ᱏᱚ-ᱽᳩ-ᳬᳮ-ᳱᳵᳶᴀ-ᶿḀ-ἕἘ-Ἕἠ-ὅὈ-Ὅὐ-ὗὙὛὝὟ-ώᾀ-ᾴᾶ-ᾼιῂ-ῄῆ-ῌῐ-ΐῖ-Ίῠ-Ῥῲ-ῴῶ-ῼⁱⁿₐ-ₜℂℇℊ-ℓℕ℘-ℝℤΩℨK-ℹℼ-ℿⅅ-ⅉⅎⅠ-ↈⰀ-Ⱞⰰ-ⱞⱠ-ⳤⳫ-ⳮⳲⳳⴀ-ⴥⴧⴭⴰ-ⵧⵯⶀ-ⶖⶠ-ⶦⶨ-ⶮⶰ-ⶶⶸ-ⶾⷀ-ⷆⷈ-ⷎⷐ-ⷖⷘ-ⷞ々-〇〡-〩〱-〵〸-〼ぁ-ゖ゛-ゟァ-ヺー-ヿㄅ-ㄭㄱ-ㆎㆠ-ㆺㇰ-ㇿ㐀-䶵一-鿌ꀀ-ꒌꓐ-ꓽꔀ-ꘌꘐ-ꘟꘪꘫꙀ-ꙮꙿ-ꚝꚠ-ꛯꜗ-ꜟꜢ-ꞈꞋ-ꞎꞐ-ꞭꞰꞱꟷ-ꠁꠃ-ꠅꠇ-ꠊꠌ-ꠢꡀ-ꡳꢂ-ꢳꣲ-ꣷꣻꤊ-ꤥꤰ-ꥆꥠ-ꥼꦄ-ꦲꧏꧠ-ꧤꧦ-ꧯꧺ-ꧾꨀ-ꨨꩀ-ꩂꩄ-ꩋꩠ-ꩶꩺꩾ-ꪯꪱꪵꪶꪹ-ꪽꫀꫂꫛ-ꫝꫠ-ꫪꫲ-ꫴꬁ-ꬆꬉ-ꬎꬑ-ꬖꬠ-ꬦꬨ-ꬮꬰ-ꭚꭜ-ꭟꭤꭥꯀ-ꯢ가-힣ힰ-ퟆퟋ-ퟻ豈-舘並-龎ff-stﬓ-ﬗיִײַ-ﬨשׁ-זּטּ-לּמּנּסּףּפּצּ-ﮱﯓ-ﴽﵐ-ﶏﶒ-ﷇﷰ-ﷻﹰ-ﹴﹶ-ﻼＡ-Ｚａ-ｚｦ-ﾾￂ-ￇￊ-ￏￒ-ￗￚ-ￜ";
var nonASCIIidentifierChars = "‌‍·̀-ͯ·҃-֑҇-ׇֽֿׁׂׅׄؐ-ًؚ-٩ٰۖ-ۜ۟-۪ۤۧۨ-ۭ۰-۹ܑܰ-݊ަ-ް߀-߉߫-߳ࠖ-࠙ࠛ-ࠣࠥ-ࠧࠩ-࡙࠭-࡛ࣤ-ःऺ-़ा-ॏ॑-ॗॢॣ०-९ঁ-ঃ়া-ৄেৈো-্ৗৢৣ০-৯ਁ-ਃ਼ਾ-ੂੇੈੋ-੍ੑ੦-ੱੵઁ-ઃ઼ા-ૅે-ૉો-્ૢૣ૦-૯ଁ-ଃ଼ା-ୄେୈୋ-୍ୖୗୢୣ୦-୯ஂா-ூெ-ைொ-்ௗ௦-௯ఀ-ఃా-ౄె-ైొ-్ౕౖౢౣ౦-౯ಁ-ಃ಼ಾ-ೄೆ-ೈೊ-್ೕೖೢೣ೦-೯ഁ-ഃാ-ൄെ-ൈൊ-്ൗൢൣ൦-൯ංඃ්ා-ුූෘ-ෟ෦-෯ෲෳัิ-ฺ็-๎๐-๙ັິ-ູົຼ່-ໍ໐-໙༘༙༠-༩༹༵༷༾༿ཱ-྄྆྇ྍ-ྗྙ-ྼ࿆ါ-ှ၀-၉ၖ-ၙၞ-ၠၢ-ၤၧ-ၭၱ-ၴႂ-ႍႏ-ႝ፝-፟፩-፱ᜒ-᜔ᜲ-᜴ᝒᝓᝲᝳ឴-៓៝០-៩᠋-᠍᠐-᠙ᢩᤠ-ᤫᤰ-᤻᥆-᥏ᦰ-ᧀᧈᧉ᧐-᧚ᨗ-ᨛᩕ-ᩞ᩠-᩿᩼-᪉᪐-᪙᪰-᪽ᬀ-ᬄ᬴-᭄᭐-᭙᭫-᭳ᮀ-ᮂᮡ-ᮭ᮰-᮹᯦-᯳ᰤ-᰷᱀-᱉᱐-᱙᳐-᳔᳒-᳨᳭ᳲ-᳴᳸᳹᷀-᷵᷼-᷿‿⁀⁔⃐-⃥⃜⃡-⃰⳯-⵿⳱ⷠ-〪ⷿ-゙゚〯꘠-꘩꙯ꙴ-꙽ꚟ꛰꛱ꠂ꠆ꠋꠣ-ꠧꢀꢁꢴ-꣄꣐-꣙꣠-꣱꤀-꤉ꤦ-꤭ꥇ-꥓ꦀ-ꦃ꦳-꧀꧐-꧙ꧥ꧰-꧹ꨩ-ꨶꩃꩌꩍ꩐-꩙ꩻ-ꩽꪰꪲ-ꪴꪷꪸꪾ꪿꫁ꫫ-ꫯꫵ꫶ꯣ-ꯪ꯬꯭꯰-꯹ﬞ︀-️︠-︭︳︴﹍-﹏０-９＿";

var nonASCIIidentifierStart = new RegExp("[" + nonASCIIidentifierStartChars + "]");
var nonASCIIidentifier = new RegExp("[" + nonASCIIidentifierStartChars + nonASCIIidentifierChars + "]");

nonASCIIidentifierStartChars = nonASCIIidentifierChars = null;

// These are a run-length and offset encoded representation of the
// >0xffff code points that are a valid part of identifiers. The
// offset starts at 0x10000, and each pair of numbers represents an
// offset to the next range, and then a size of the range. They were
// generated by tools/generate-identifier-regex.js
var astralIdentifierStartCodes = [0, 11, 2, 25, 2, 18, 2, 1, 2, 14, 3, 13, 35, 122, 70, 52, 268, 28, 4, 48, 48, 31, 17, 26, 6, 37, 11, 29, 3, 35, 5, 7, 2, 4, 43, 157, 99, 39, 9, 51, 157, 310, 10, 21, 11, 7, 153, 5, 3, 0, 2, 43, 2, 1, 4, 0, 3, 22, 11, 22, 10, 30, 98, 21, 11, 25, 71, 55, 7, 1, 65, 0, 16, 3, 2, 2, 2, 26, 45, 28, 4, 28, 36, 7, 2, 27, 28, 53, 11, 21, 11, 18, 14, 17, 111, 72, 955, 52, 76, 44, 33, 24, 27, 35, 42, 34, 4, 0, 13, 47, 15, 3, 22, 0, 38, 17, 2, 24, 133, 46, 39, 7, 3, 1, 3, 21, 2, 6, 2, 1, 2, 4, 4, 0, 32, 4, 287, 47, 21, 1, 2, 0, 185, 46, 82, 47, 21, 0, 60, 42, 502, 63, 32, 0, 449, 56, 1288, 920, 104, 110, 2962, 1070, 13266, 568, 8, 30, 114, 29, 19, 47, 17, 3, 32, 20, 6, 18, 881, 68, 12, 0, 67, 12, 16481, 1, 3071, 106, 6, 12, 4, 8, 8, 9, 5991, 84, 2, 70, 2, 1, 3, 0, 3, 1, 3, 3, 2, 11, 2, 0, 2, 6, 2, 64, 2, 3, 3, 7, 2, 6, 2, 27, 2, 3, 2, 4, 2, 0, 4, 6, 2, 339, 3, 24, 2, 24, 2, 30, 2, 24, 2, 30, 2, 24, 2, 30, 2, 24, 2, 30, 2, 24, 2, 7, 4149, 196, 1340, 3, 2, 26, 2, 1, 2, 0, 3, 0, 2, 9, 2, 3, 2, 0, 2, 0, 7, 0, 5, 0, 2, 0, 2, 0, 2, 2, 2, 1, 2, 0, 3, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 1, 2, 0, 3, 3, 2, 6, 2, 3, 2, 3, 2, 0, 2, 9, 2, 16, 6, 2, 2, 4, 2, 16, 4421, 42710, 42, 4148, 12, 221, 16355, 541];
var astralIdentifierCodes = [509, 0, 227, 0, 150, 4, 294, 9, 1368, 2, 2, 1, 6, 3, 41, 2, 5, 0, 166, 1, 1306, 2, 54, 14, 32, 9, 16, 3, 46, 10, 54, 9, 7, 2, 37, 13, 2, 9, 52, 0, 13, 2, 49, 13, 16, 9, 83, 11, 168, 11, 6, 9, 8, 2, 57, 0, 2, 6, 3, 1, 3, 2, 10, 0, 11, 1, 3, 6, 4, 4, 316, 19, 13, 9, 214, 6, 3, 8, 112, 16, 16, 9, 82, 12, 9, 9, 535, 9, 20855, 9, 135, 4, 60, 6, 26, 9, 1016, 45, 17, 3, 19723, 1, 5319, 4, 4, 5, 9, 7, 3, 6, 31, 3, 149, 2, 1418, 49, 4305, 6, 792618, 239];

// This has a complexity linear to the value of the code. The
// assumption is that looking up astral identifier characters is
// rare.
function isInAstralSet(code, set) {
  var pos = 65536;
  for (var i = 0; i < set.length; i += 2) {
    pos += set[i];
    if (pos > code) return false;
    pos += set[i + 1];
    if (pos >= code) return true;
  }
}
function isIdentifierStart(code, astral) {
  if (code < 65) return code === 36;
  if (code < 91) return true;
  if (code < 97) return code === 95;
  if (code < 123) return true;
  if (code <= 65535) return code >= 170 && nonASCIIidentifierStart.test(String.fromCharCode(code));
  if (astral === false) return false;
  return isInAstralSet(code, astralIdentifierStartCodes);
}

function isIdentifierChar(code, astral) {
  if (code < 48) return code === 36;
  if (code < 58) return true;
  if (code < 65) return false;
  if (code < 91) return true;
  if (code < 97) return code === 95;
  if (code < 123) return true;
  if (code <= 65535) return code >= 170 && nonASCIIidentifier.test(String.fromCharCode(code));
  if (astral === false) return false;
  return isInAstralSet(code, astralIdentifierStartCodes) || isInAstralSet(code, astralIdentifierCodes);
}
},{}],5:[function(require,module,exports){
// Acorn is a tiny, fast JavaScript parser written in JavaScript.
//
// Acorn was written by Marijn Haverbeke, Ingvar Stepanyan, and
// various contributors and released under an MIT license.
//
// Git repositories for Acorn are available at
//
//     http://marijnhaverbeke.nl/git/acorn
//     https://github.com/marijnh/acorn.git
//
// Please use the [github bug tracker][ghbt] to report issues.
//
// [ghbt]: https://github.com/marijnh/acorn/issues
//
// This file defines the main parser interface. The library also comes
// with a [error-tolerant parser][dammit] and an
// [abstract syntax tree walker][walk], defined in other files.
//
// [dammit]: acorn_loose.js
// [walk]: util/walk.js

"use strict";

exports.__esModule = true;

// The main exported interface (under `self.acorn` when in the
// browser) is a `parse` function that takes a code string and
// returns an abstract syntax tree as specified by [Mozilla parser
// API][api].
//
// [api]: https://developer.mozilla.org/en-US/docs/SpiderMonkey/Parser_API

exports.parse = parse;

// This function tries to parse a single expression at a given
// offset in a string. Useful for parsing mixed-language formats
// that embed JavaScript expressions.

exports.parseExpressionAt = parseExpressionAt;

// Acorn is organized as a tokenizer and a recursive-descent parser.
// The `tokenize` export provides an interface to the tokenizer.
// Because the tokenizer is optimized for being efficiently used by
// the Acorn parser itself, this interface is somewhat crude and not
// very modular.

exports.tokenizer = tokenizer;

var _state = require("./state");

var _options = require("./options");

require("./parseutil");

require("./statement");

require("./lval");

require("./expression");

require("./lookahead");

exports.Parser = _state.Parser;
exports.plugins = _state.plugins;
exports.defaultOptions = _options.defaultOptions;

var _location = require("./location");

exports.SourceLocation = _location.SourceLocation;
exports.getLineInfo = _location.getLineInfo;

var _node = require("./node");

exports.Node = _node.Node;

var _tokentype = require("./tokentype");

exports.TokenType = _tokentype.TokenType;
exports.tokTypes = _tokentype.types;

var _tokencontext = require("./tokencontext");

exports.TokContext = _tokencontext.TokContext;
exports.tokContexts = _tokencontext.types;

var _identifier = require("./identifier");

exports.isIdentifierChar = _identifier.isIdentifierChar;
exports.isIdentifierStart = _identifier.isIdentifierStart;

var _tokenize = require("./tokenize");

exports.Token = _tokenize.Token;

var _whitespace = require("./whitespace");

exports.isNewLine = _whitespace.isNewLine;
exports.lineBreak = _whitespace.lineBreak;
exports.lineBreakG = _whitespace.lineBreakG;
var version = "1.0.0";exports.version = version;

function parse(input, options) {
  var p = parser(options, input);
  var startPos = p.options.locations ? [p.pos, p.curPosition()] : p.pos;
  p.nextToken();
  return p.parseTopLevel(p.options.program || p.startNodeAt(startPos));
}

function parseExpressionAt(input, pos, options) {
  var p = parser(options, input, pos);
  p.nextToken();
  return p.parseExpression();
}

function tokenizer(input, options) {
  return parser(options, input);
}

function parser(options, input) {
  return new _state.Parser((0, _options.getOptions)(options), String(input));
}
},{"./expression":3,"./identifier":4,"./location":6,"./lookahead":7,"./lval":8,"./node":9,"./options":10,"./parseutil":11,"./state":12,"./statement":13,"./tokencontext":14,"./tokenize":15,"./tokentype":16,"./whitespace":18}],6:[function(require,module,exports){
"use strict";

exports.__esModule = true;

// The `getLineInfo` function is mostly useful when the
// `locations` option is off (for performance reasons) and you
// want to find the line/column position for a given character
// offset. `input` should be the code string that the offset refers
// into.

exports.getLineInfo = getLineInfo;

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var _state = require("./state");

var _whitespace = require("./whitespace");

// These are used when `options.locations` is on, for the
// `startLoc` and `endLoc` properties.

var Position = (function () {
  function Position(line, col) {
    _classCallCheck(this, Position);

    this.line = line;
    this.column = col;
  }

  Position.prototype.offset = function offset(n) {
    return new Position(this.line, this.column + n);
  };

  return Position;
})();

exports.Position = Position;

var SourceLocation = function SourceLocation(p, start, end) {
  _classCallCheck(this, SourceLocation);

  this.start = start;
  this.end = end;
  if (p.sourceFile !== null) this.source = p.sourceFile;
};

exports.SourceLocation = SourceLocation;

function getLineInfo(input, offset) {
  for (var line = 1, cur = 0;;) {
    _whitespace.lineBreakG.lastIndex = cur;
    var match = _whitespace.lineBreakG.exec(input);
    if (match && match.index < offset) {
      ++line;
      cur = match.index + match[0].length;
    } else {
      return new Position(line, offset - cur);
    }
  }
}

var pp = _state.Parser.prototype;

// This function is used to raise exceptions on parse errors. It
// takes an offset integer (into the current `input`) to indicate
// the location of the error, attaches the position to the end
// of the error message, and then raises a `SyntaxError` with that
// message.

pp.raise = function (pos, message) {
  var loc = getLineInfo(this.input, pos);
  message += " (" + loc.line + ":" + loc.column + ")";
  var err = new SyntaxError(message);
  err.pos = pos;err.loc = loc;err.raisedAt = this.pos;
  throw err;
};

pp.curPosition = function () {
  return new Position(this.curLine, this.pos - this.lineStart);
};

pp.markPosition = function () {
  return this.options.locations ? [this.start, this.startLoc] : this.start;
};
},{"./state":12,"./whitespace":18}],7:[function(require,module,exports){
"use strict";

var _state = require("./state");

var pp = _state.Parser.prototype;

var STATE_KEYS = ["lastTokStartLoc", "lastTokEndLoc", "lastTokStart", "lastTokEnd", "lineStart", "startLoc", "endLoc", "start", "pos", "end", "type", "value", "exprAllowed", "potentialArrowAt", "currLine", "input"];

pp.getState = function () {
  var state = {};
  for (var i = 0; i < STATE_KEYS.length; i++) {
    var key = STATE_KEYS[i];
    state[key] = this[key];
  }
  state.context = this.context.slice();
  return state;
};

pp.lookahead = function () {
  var old = this.getState();
  this.isLookahead = true;
  this.next();
  this.isLookahead = false;
  var curr = this.getState();
  for (var key in old) this[key] = old[key];
  return curr;
};
},{"./state":12}],8:[function(require,module,exports){
"use strict";

var _tokentype = require("./tokentype");

var _state = require("./state");

var _identifier = require("./identifier");

var _util = require("./util");

var pp = _state.Parser.prototype;

// Convert existing expression atom to assignable pattern
// if possible.

pp.toAssignable = function (node, isBinding) {
  if (this.options.ecmaVersion >= 6 && node) {
    switch (node.type) {
      case "Identifier":
      case "ObjectPattern":
      case "ArrayPattern":
      case "AssignmentPattern":
        break;

      case "ObjectExpression":
        node.type = "ObjectPattern";
        for (var i = 0; i < node.properties.length; i++) {
          var prop = node.properties[i];
          if (prop.type === "SpreadProperty") continue;
          if (prop.kind !== "init") this.raise(prop.key.start, "Object pattern can't contain getter or setter");
          this.toAssignable(prop.value, isBinding);
        }
        break;

      case "ArrayExpression":
        node.type = "ArrayPattern";
        this.toAssignableList(node.elements, isBinding);
        break;

      case "AssignmentExpression":
        if (node.operator === "=") {
          node.type = "AssignmentPattern";
        } else {
          this.raise(node.left.end, "Only '=' operator can be used for specifying default value.");
        }
        break;

      case "MemberExpression":
        if (!isBinding) break;

      default:
        this.raise(node.start, "Assigning to rvalue");
    }
  }
  return node;
};

// Convert list of expression atoms to binding list.

pp.toAssignableList = function (exprList, isBinding) {
  var end = exprList.length;
  if (end) {
    var last = exprList[end - 1];
    if (last && last.type == "RestElement") {
      --end;
    } else if (last && last.type == "SpreadElement") {
      last.type = "RestElement";
      var arg = last.argument;
      this.toAssignable(arg, isBinding);
      if (arg.type !== "Identifier" && arg.type !== "MemberExpression" && arg.type !== "ArrayPattern") this.unexpected(arg.start);
      --end;
    }
  }
  for (var i = 0; i < end; i++) {
    var elt = exprList[i];
    if (elt) this.toAssignable(elt, isBinding);
  }
  return exprList;
};

// Parses spread element.

pp.parseSpread = function (refShorthandDefaultPos) {
  var node = this.startNode();
  this.next();
  node.argument = this.parseMaybeAssign(refShorthandDefaultPos);
  return this.finishNode(node, "SpreadElement");
};

pp.parseRest = function () {
  var node = this.startNode();
  this.next();
  node.argument = this.type === _tokentype.types.name || this.type === _tokentype.types.bracketL ? this.parseBindingAtom() : this.unexpected();
  return this.finishNode(node, "RestElement");
};

// Parses lvalue (assignable) atom.

pp.parseBindingAtom = function () {
  if (this.options.ecmaVersion < 6) return this.parseIdent();
  switch (this.type) {
    case _tokentype.types.name:
      return this.parseIdent();

    case _tokentype.types.bracketL:
      var node = this.startNode();
      this.next();
      node.elements = this.parseBindingList(_tokentype.types.bracketR, true, true);
      return this.finishNode(node, "ArrayPattern");

    case _tokentype.types.braceL:
      return this.parseObj(true);

    default:
      this.unexpected();
  }
};

pp.parseBindingList = function (close, allowEmpty, allowTrailingComma) {
  var elts = [],
      first = true;
  while (!this.eat(close)) {
    if (first) first = false;else this.expect(_tokentype.types.comma);
    if (allowEmpty && this.type === _tokentype.types.comma) {
      elts.push(null);
    } else if (allowTrailingComma && this.afterTrailingComma(close)) {
      break;
    } else if (this.type === _tokentype.types.ellipsis) {
      elts.push(this.parseAssignableListItemTypes(this.parseRest()));
      this.expect(close);
      break;
    } else {
      var left = this.parseMaybeDefault();
      this.parseAssignableListItemTypes(left);
      elts.push(this.parseMaybeDefault(null, left));
    }
  }
  return elts;
};

pp.parseAssignableListItemTypes = function (param) {
  return param;
};

// Parses assignment pattern around given atom if possible.

pp.parseMaybeDefault = function (startPos, left) {
  startPos = startPos || this.markPosition();
  left = left || this.parseBindingAtom();
  if (!this.eat(_tokentype.types.eq)) return left;
  var node = this.startNodeAt(startPos);
  node.operator = "=";
  node.left = left;
  node.right = this.parseMaybeAssign();
  return this.finishNode(node, "AssignmentPattern");
};

// Verify that a node is an lval — something that can be assigned
// to.

pp.checkLVal = function (expr, isBinding, checkClashes) {
  switch (expr.type) {
    case "Identifier":
      if (this.strict && (_identifier.reservedWords.strictBind(expr.name) || _identifier.reservedWords.strict(expr.name))) this.raise(expr.start, (isBinding ? "Binding " : "Assigning to ") + expr.name + " in strict mode");
      if (checkClashes) {
        if ((0, _util.has)(checkClashes, expr.name)) this.raise(expr.start, "Argument name clash in strict mode");
        checkClashes[expr.name] = true;
      }
      break;

    case "MemberExpression":
      if (isBinding) this.raise(expr.start, (isBinding ? "Binding" : "Assigning to") + " member expression");
      break;

    case "ObjectPattern":
      for (var i = 0; i < expr.properties.length; i++) {
        var prop = expr.properties[i];
        if (prop.type === "Property") prop = prop.value;
        this.checkLVal(prop, isBinding, checkClashes);
      }
      break;

    case "ArrayPattern":
      for (var i = 0; i < expr.elements.length; i++) {
        var elem = expr.elements[i];
        if (elem) this.checkLVal(elem, isBinding, checkClashes);
      }
      break;

    case "AssignmentPattern":
      this.checkLVal(expr.left, isBinding, checkClashes);
      break;

    case "SpreadProperty":
    case "RestElement":
      this.checkLVal(expr.argument, isBinding, checkClashes);
      break;

    default:
      this.raise(expr.start, (isBinding ? "Binding" : "Assigning to") + " rvalue");
  }
};
},{"./identifier":4,"./state":12,"./tokentype":16,"./util":17}],9:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var _state = require("./state");

var _location = require("./location");

// Start an AST node, attaching a start offset.

var pp = _state.Parser.prototype;

var Node = function Node() {
  _classCallCheck(this, Node);
};

exports.Node = Node;

pp.startNode = function () {
  var node = new Node();
  node.start = this.start;
  if (this.options.locations) node.loc = new _location.SourceLocation(this, this.startLoc);
  if (this.options.directSourceFile) node.sourceFile = this.options.directSourceFile;
  if (this.options.ranges) node.range = [this.start, 0];
  return node;
};

pp.startNodeAt = function (pos) {
  var node = new Node(),
      start = pos;
  if (this.options.locations) {
    node.loc = new _location.SourceLocation(this, start[1]);
    start = pos[0];
  }
  node.start = start;
  if (this.options.directSourceFile) node.sourceFile = this.options.directSourceFile;
  if (this.options.ranges) node.range = [start, 0];
  return node;
};

// Finish an AST node, adding `type` and `end` properties.

pp.finishNode = function (node, type) {
  node.type = type;
  node.end = this.lastTokEnd;
  if (this.options.locations) node.loc.end = this.lastTokEndLoc;
  if (this.options.ranges) node.range[1] = this.lastTokEnd;
  return node;
};

// Finish node at given position

pp.finishNodeAt = function (node, type, pos) {
  if (this.options.locations) {
    node.loc.end = pos[1];pos = pos[0];
  }
  node.type = type;
  node.end = pos;
  if (this.options.ranges) node.range[1] = pos;
  return node;
};
},{"./location":6,"./state":12}],10:[function(require,module,exports){
"use strict";

exports.__esModule = true;

// Interpret and default an options object

exports.getOptions = getOptions;

var _util = require("./util");

var _location = require("./location");

// A second optional argument can be given to further configure
// the parser process. These options are recognized:

var defaultOptions = {
  // `ecmaVersion` indicates the ECMAScript version to parse. Must
  // be either 3, or 5, or 6. This influences support for strict
  // mode, the set of reserved words, support for getters and
  // setters and other features.
  ecmaVersion: 5,
  // Source type ("script" or "module") for different semantics
  sourceType: "script",
  // `onInsertedSemicolon` can be a callback that will be called
  // when a semicolon is automatically inserted. It will be passed
  // th position of the comma as an offset, and if `locations` is
  // enabled, it is given the location as a `{line, column}` object
  // as second argument.
  onInsertedSemicolon: null,
  // `onTrailingComma` is similar to `onInsertedSemicolon`, but for
  // trailing commas.
  onTrailingComma: null,
  // By default, reserved words are not enforced. Disable
  // `allowReserved` to enforce them. When this option has the
  // value "never", reserved words and keywords can also not be
  // used as property names.
  allowReserved: true,
  // When enabled, a return at the top level is not considered an
  // error.
  allowReturnOutsideFunction: false,
  // When enabled, import/export statements are not constrained to
  // appearing at the top of the program.
  allowImportExportEverywhere: false,
  // When enabled, hashbang directive in the beginning of file
  // is allowed and treated as a line comment.
  allowHashBang: false,
  // When `locations` is on, `loc` properties holding objects with
  // `start` and `end` properties in `{line, column}` form (with
  // line being 1-based and column 0-based) will be attached to the
  // nodes.
  locations: false,
  // A function can be passed as `onToken` option, which will
  // cause Acorn to call that function with object in the same
  // format as tokenize() returns. Note that you are not
  // allowed to call the parser from the callback—that will
  // corrupt its internal state.
  onToken: null,
  // A function can be passed as `onComment` option, which will
  // cause Acorn to call that function with `(block, text, start,
  // end)` parameters whenever a comment is skipped. `block` is a
  // boolean indicating whether this is a block (`/* */`) comment,
  // `text` is the content of the comment, and `start` and `end` are
  // character offsets that denote the start and end of the comment.
  // When the `locations` option is on, two more parameters are
  // passed, the full `{line, column}` locations of the start and
  // end of the comments. Note that you are not allowed to call the
  // parser from the callback—that will corrupt its internal state.
  onComment: null,
  // Nodes have their start and end characters offsets recorded in
  // `start` and `end` properties (directly on the node, rather than
  // the `loc` object, which holds line/column data. To also add a
  // [semi-standardized][range] `range` property holding a `[start,
  // end]` array with the same numbers, set the `ranges` option to
  // `true`.
  //
  // [range]: https://bugzilla.mozilla.org/show_bug.cgi?id=745678
  ranges: false,
  // It is possible to parse multiple files into a single AST by
  // passing the tree produced by parsing the first file as
  // `program` option in subsequent parses. This will add the
  // toplevel forms of the parsed file to the `Program` (top) node
  // of an existing parse tree.
  program: null,
  // When `locations` is on, you can pass this to record the source
  // file in every node's `loc` object.
  sourceFile: null,
  // This value, if given, is stored in every node, whether
  // `locations` is on or off.
  directSourceFile: null,
  // When enabled, parenthesized expressions are represented by
  // (non-standard) ParenthesizedExpression nodes
  preserveParens: false,
  plugins: {},
  // Babel-specific options
  features: {},
  strictMode: null
};exports.defaultOptions = defaultOptions;

function getOptions(opts) {
  var options = {};
  for (var opt in defaultOptions) {
    options[opt] = opts && (0, _util.has)(opts, opt) ? opts[opt] : defaultOptions[opt];
  }if ((0, _util.isArray)(options.onToken)) {
    (function () {
      var tokens = options.onToken;
      options.onToken = function (token) {
        return tokens.push(token);
      };
    })();
  }
  if ((0, _util.isArray)(options.onComment)) options.onComment = pushComment(options, options.onComment);

  return options;
}

function pushComment(options, array) {
  return function (block, text, start, end, startLoc, endLoc) {
    var comment = {
      type: block ? "Block" : "Line",
      value: text,
      start: start,
      end: end
    };
    if (options.locations) comment.loc = new _location.SourceLocation(this, startLoc, endLoc);
    if (options.ranges) comment.range = [start, end];
    array.push(comment);
  };
}
},{"./location":6,"./util":17}],11:[function(require,module,exports){
"use strict";

var _tokentype = require("./tokentype");

var _state = require("./state");

var _whitespace = require("./whitespace");

var pp = _state.Parser.prototype;

// ## Parser utilities

// Test whether a statement node is the string literal `"use strict"`.

pp.isUseStrict = function (stmt) {
  return this.options.ecmaVersion >= 5 && stmt.type === "ExpressionStatement" && stmt.expression.type === "Literal" && stmt.expression.value === "use strict";
};

// Predicate that tests whether the next token is of the given
// type, and if yes, consumes it as a side effect.

pp.eat = function (type) {
  if (this.type === type) {
    this.next();
    return true;
  } else {
    return false;
  }
};

// Tests whether parsed token is a contextual keyword.

pp.isContextual = function (name) {
  return this.type === _tokentype.types.name && this.value === name;
};

// Consumes contextual keyword if possible.

pp.eatContextual = function (name) {
  return this.value === name && this.eat(_tokentype.types.name);
};

// Asserts that following token is given contextual keyword.

pp.expectContextual = function (name) {
  if (!this.eatContextual(name)) this.unexpected();
};

// Test whether a semicolon can be inserted at the current position.

pp.canInsertSemicolon = function () {
  return this.type === _tokentype.types.eof || this.type === _tokentype.types.braceR || _whitespace.lineBreak.test(this.input.slice(this.lastTokEnd, this.start));
};

pp.insertSemicolon = function () {
  if (this.canInsertSemicolon()) {
    if (this.options.onInsertedSemicolon) this.options.onInsertedSemicolon(this.lastTokEnd, this.lastTokEndLoc);
    return true;
  }
};

// Consume a semicolon, or, failing that, see if we are allowed to
// pretend that there is a semicolon at this position.

pp.semicolon = function () {
  if (!this.eat(_tokentype.types.semi) && !this.insertSemicolon()) this.unexpected();
};

pp.afterTrailingComma = function (tokType) {
  if (this.type == tokType) {
    if (this.options.onTrailingComma) this.options.onTrailingComma(this.lastTokStart, this.lastTokStartLoc);
    this.next();
    return true;
  }
};

// Expect a token of a given type. If found, consume it, otherwise,
// raise an unexpected token error.

pp.expect = function (type) {
  this.eat(type) || this.unexpected();
};

// Raise an unexpected token error.

pp.unexpected = function (pos) {
  this.raise(pos != null ? pos : this.start, "Unexpected token");
};
},{"./state":12,"./tokentype":16,"./whitespace":18}],12:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.Parser = Parser;

var _identifier = require("./identifier");

var _tokentype = require("./tokentype");

function Parser(options, input, startPos) {
  this.options = options;
  this.loadPlugins(this.options.plugins);
  this.sourceFile = this.options.sourceFile || null;
  this.isKeyword = _identifier.keywords[this.options.ecmaVersion >= 6 ? 6 : 5];
  this.isReservedWord = _identifier.reservedWords[this.options.ecmaVersion];
  this.input = input;

  // Set up token state

  // The current position of the tokenizer in the input.
  if (startPos) {
    this.pos = startPos;
    this.lineStart = Math.max(0, this.input.lastIndexOf("\n", startPos));
    this.curLine = this.input.slice(0, this.lineStart).split(_tokentype.lineBreak).length;
  } else {
    this.pos = this.lineStart = 0;
    this.curLine = 1;
  }

  // Properties of the current token:
  // Its type
  this.type = _tokentype.types.eof;
  // For tokens that include more information than their type, the value
  this.value = null;
  // Its start and end offset
  this.start = this.end = this.pos;
  // And, if locations are used, the {line, column} object
  // corresponding to those offsets
  this.startLoc = this.endLoc = null;

  // Position information for the previous token
  this.lastTokEndLoc = this.lastTokStartLoc = null;
  this.lastTokStart = this.lastTokEnd = this.pos;

  // The context stack is used to superficially track syntactic
  // context to predict whether a regular expression is allowed in a
  // given position.
  this.context = this.initialContext();
  this.exprAllowed = true;

  // Figure out if it's a module code.
  this.inModule = this.options.sourceType === "module";
  this.strict = this.options.strictMode === false ? false : this.inModule;

  // Used to signify the start of a potential arrow function
  this.potentialArrowAt = -1;

  // Flags to track whether we are in a function, a generator.
  this.inFunction = this.inGenerator = false;
  // Labels in scope.
  this.labels = [];

  this.decorators = [];

  // If enabled, skip leading hashbang line.
  if (this.pos === 0 && this.options.allowHashBang && this.input.slice(0, 2) === "#!") this.skipLineComment(2);
}

Parser.prototype.extend = function (name, f) {
  this[name] = f(this[name]);
};

// Registered plugins

var plugins = {};

exports.plugins = plugins;
Parser.prototype.loadPlugins = function (plugins) {
  for (var _name in plugins) {
    var plugin = exports.plugins[_name];
    if (!plugin) throw new Error("Plugin '" + _name + "' not found");
    plugin(this, plugins[_name]);
  }
};
},{"./identifier":4,"./tokentype":16}],13:[function(require,module,exports){
"use strict";

var _tokentype = require("./tokentype");

var _state = require("./state");

var _whitespace = require("./whitespace");

var pp = _state.Parser.prototype;

// ### Statement parsing

// Parse a program. Initializes the parser, reads any number of
// statements, and wraps them in a Program node.  Optionally takes a
// `program` argument.  If present, the statements will be appended
// to its body instead of creating a new node.

pp.parseTopLevel = function (node) {
  var first = true;
  if (!node.body) node.body = [];
  while (this.type !== _tokentype.types.eof) {
    var stmt = this.parseStatement(true, true);
    node.body.push(stmt);
    if (first && this.isUseStrict(stmt)) this.setStrict(true);
    first = false;
  }
  this.next();
  if (this.options.ecmaVersion >= 6) {
    node.sourceType = this.options.sourceType;
  }
  return this.finishNode(node, "Program");
};

var loopLabel = { kind: "loop" },
    switchLabel = { kind: "switch" };

// Parse a single statement.
//
// If expecting a statement and finding a slash operator, parse a
// regular expression literal. This is to handle cases like
// `if (foo) /blah/.exec(foo)`, where looking at the previous token
// does not help.

pp.parseStatement = function (declaration, topLevel) {
  if (this.type === _tokentype.types.at) {
    this.parseDecorators(true);
  }

  var starttype = this.type,
      node = this.startNode();

  // Most types of statements are recognized by the keyword they
  // start with. Many are trivial to parse, some require a bit of
  // complexity.

  switch (starttype) {
    case _tokentype.types._break:case _tokentype.types._continue:
      return this.parseBreakContinueStatement(node, starttype.keyword);
    case _tokentype.types._debugger:
      return this.parseDebuggerStatement(node);
    case _tokentype.types._do:
      return this.parseDoStatement(node);
    case _tokentype.types._for:
      return this.parseForStatement(node);
    case _tokentype.types._function:
      if (!declaration && this.options.ecmaVersion >= 6) this.unexpected();
      return this.parseFunctionStatement(node);

    case _tokentype.types._class:
      if (!declaration) this.unexpected();
      this.takeDecorators(node);
      return this.parseClass(node, true);

    case _tokentype.types._if:
      return this.parseIfStatement(node);
    case _tokentype.types._return:
      return this.parseReturnStatement(node);
    case _tokentype.types._switch:
      return this.parseSwitchStatement(node);
    case _tokentype.types._throw:
      return this.parseThrowStatement(node);
    case _tokentype.types._try:
      return this.parseTryStatement(node);
    case _tokentype.types._let:case _tokentype.types._const:
      if (!declaration) this.unexpected(); // NOTE: falls through to _var
    case _tokentype.types._var:
      return this.parseVarStatement(node, starttype);
    case _tokentype.types._while:
      return this.parseWhileStatement(node);
    case _tokentype.types._with:
      return this.parseWithStatement(node);
    case _tokentype.types.braceL:
      return this.parseBlock();
    case _tokentype.types.semi:
      return this.parseEmptyStatement(node);
    case _tokentype.types._export:
    case _tokentype.types._import:
      if (!this.options.allowImportExportEverywhere) {
        if (!topLevel) this.raise(this.start, "'import' and 'export' may only appear at the top level");
        if (!this.inModule) this.raise(this.start, "'import' and 'export' may appear only with 'sourceType: module'");
      }
      return starttype === _tokentype.types._import ? this.parseImport(node) : this.parseExport(node);

    case _tokentype.types.name:
      if (this.options.features["es7.asyncFunctions"] && this.value === "async" && this.lookahead().type === _tokentype.types._function) {
        this.next();
        this.expect(_tokentype.types._function);
        return this.parseFunction(node, true, false, true);
      }

    // If the statement does not start with a statement keyword or a
    // brace, it's an ExpressionStatement or LabeledStatement. We
    // simply start parsing an expression, and afterwards, if the
    // next token is a colon and the expression was a simple
    // Identifier node, we switch to interpreting it as a label.
    default:
      var maybeName = this.value,
          expr = this.parseExpression();
      if (starttype === _tokentype.types.name && expr.type === "Identifier" && this.eat(_tokentype.types.colon)) return this.parseLabeledStatement(node, maybeName, expr);else return this.parseExpressionStatement(node, expr);
  }
};

pp.takeDecorators = function (node) {
  if (this.decorators.length) {
    node.decorators = this.decorators;
    this.decorators = [];
  }
};

pp.parseDecorators = function (allowExport) {
  while (this.type === _tokentype.types.at) {
    this.decorators.push(this.parseDecorator());
  }

  if (allowExport && this.type === _tokentype.types._export) {
    return;
  }

  if (this.type !== _tokentype.types._class) {
    this.raise(this.start, "Leading decorators must be attached to a class declaration");
  }
};

pp.parseDecorator = function (allowExport) {
  if (!this.options.features["es7.decorators"]) {
    this.unexpected();
  }
  var node = this.startNode();
  this.next();
  node.expression = this.parseMaybeAssign();
  return this.finishNode(node, "Decorator");
};

pp.parseBreakContinueStatement = function (node, keyword) {
  var isBreak = keyword == "break";
  this.next();
  if (this.eat(_tokentype.types.semi) || this.insertSemicolon()) node.label = null;else if (this.type !== _tokentype.types.name) this.unexpected();else {
    node.label = this.parseIdent();
    this.semicolon();
  }

  // Verify that there is an actual destination to break or
  // continue to.
  for (var i = 0; i < this.labels.length; ++i) {
    var lab = this.labels[i];
    if (node.label == null || lab.name === node.label.name) {
      if (lab.kind != null && (isBreak || lab.kind === "loop")) break;
      if (node.label && isBreak) break;
    }
  }
  if (i === this.labels.length) this.raise(node.start, "Unsyntactic " + keyword);
  return this.finishNode(node, isBreak ? "BreakStatement" : "ContinueStatement");
};

pp.parseDebuggerStatement = function (node) {
  this.next();
  this.semicolon();
  return this.finishNode(node, "DebuggerStatement");
};

pp.parseDoStatement = function (node) {
  var start = this.markPosition();
  this.next();
  this.labels.push(loopLabel);
  node.body = this.parseStatement(false);
  this.labels.pop();
  if (this.options.features["es7.doExpressions"] && this.type !== _tokentype.types._while) {
    var container = this.startNodeAt(start);
    container.expression = this.finishNode(node, "DoExpression");
    this.semicolon();
    return this.finishNode(container, "ExpressionStatement");
  }
  this.expect(_tokentype.types._while);
  node.test = this.parseParenExpression();
  if (this.options.ecmaVersion >= 6) this.eat(_tokentype.types.semi);else this.semicolon();
  return this.finishNode(node, "DoWhileStatement");
};

// Disambiguating between a `for` and a `for`/`in` or `for`/`of`
// loop is non-trivial. Basically, we have to parse the init `var`
// statement or expression, disallowing the `in` operator (see
// the second parameter to `parseExpression`), and then check
// whether the next token is `in` or `of`. When there is no init
// part (semicolon immediately after the opening parenthesis), it
// is a regular `for` loop.

pp.parseForStatement = function (node) {
  this.next();
  this.labels.push(loopLabel);
  this.expect(_tokentype.types.parenL);
  if (this.type === _tokentype.types.semi) return this.parseFor(node, null);
  if (this.type === _tokentype.types._var || this.type === _tokentype.types._let || this.type === _tokentype.types._const) {
    var _init = this.startNode(),
        varKind = this.type;
    this.next();
    this.parseVar(_init, true, varKind);
    this.finishNode(_init, "VariableDeclaration");
    if ((this.type === _tokentype.types._in || this.options.ecmaVersion >= 6 && this.isContextual("of")) && _init.declarations.length === 1 && !(varKind !== _tokentype.types._var && _init.declarations[0].init)) return this.parseForIn(node, _init);
    return this.parseFor(node, _init);
  }
  var refShorthandDefaultPos = { start: 0 };
  var init = this.parseExpression(true, refShorthandDefaultPos);
  if (this.type === _tokentype.types._in || this.options.ecmaVersion >= 6 && this.isContextual("of")) {
    this.toAssignable(init);
    this.checkLVal(init);
    return this.parseForIn(node, init);
  } else if (refShorthandDefaultPos.start) {
    this.unexpected(refShorthandDefaultPos.start);
  }
  return this.parseFor(node, init);
};

pp.parseFunctionStatement = function (node) {
  this.next();
  return this.parseFunction(node, true);
};

pp.parseIfStatement = function (node) {
  this.next();
  node.test = this.parseParenExpression();
  node.consequent = this.parseStatement(false);
  node.alternate = this.eat(_tokentype.types._else) ? this.parseStatement(false) : null;
  return this.finishNode(node, "IfStatement");
};

pp.parseReturnStatement = function (node) {
  if (!this.inFunction && !this.options.allowReturnOutsideFunction) this.raise(this.start, "'return' outside of function");
  this.next();

  // In `return` (and `break`/`continue`), the keywords with
  // optional arguments, we eagerly look for a semicolon or the
  // possibility to insert one.

  if (this.eat(_tokentype.types.semi) || this.insertSemicolon()) node.argument = null;else {
    node.argument = this.parseExpression();this.semicolon();
  }
  return this.finishNode(node, "ReturnStatement");
};

pp.parseSwitchStatement = function (node) {
  this.next();
  node.discriminant = this.parseParenExpression();
  node.cases = [];
  this.expect(_tokentype.types.braceL);
  this.labels.push(switchLabel);

  // Statements under must be grouped (by label) in SwitchCase
  // nodes. `cur` is used to keep the node that we are currently
  // adding statements to.

  for (var cur, sawDefault; this.type != _tokentype.types.braceR;) {
    if (this.type === _tokentype.types._case || this.type === _tokentype.types._default) {
      var isCase = this.type === _tokentype.types._case;
      if (cur) this.finishNode(cur, "SwitchCase");
      node.cases.push(cur = this.startNode());
      cur.consequent = [];
      this.next();
      if (isCase) {
        cur.test = this.parseExpression();
      } else {
        if (sawDefault) this.raise(this.lastTokStart, "Multiple default clauses");
        sawDefault = true;
        cur.test = null;
      }
      this.expect(_tokentype.types.colon);
    } else {
      if (!cur) this.unexpected();
      cur.consequent.push(this.parseStatement(true));
    }
  }
  if (cur) this.finishNode(cur, "SwitchCase");
  this.next(); // Closing brace
  this.labels.pop();
  return this.finishNode(node, "SwitchStatement");
};

pp.parseThrowStatement = function (node) {
  this.next();
  if (_whitespace.lineBreak.test(this.input.slice(this.lastTokEnd, this.start))) this.raise(this.lastTokEnd, "Illegal newline after throw");
  node.argument = this.parseExpression();
  this.semicolon();
  return this.finishNode(node, "ThrowStatement");
};

// Reused empty array added for node fields that are always empty.

var empty = [];

pp.parseTryStatement = function (node) {
  this.next();
  node.block = this.parseBlock();
  node.handler = null;
  if (this.type === _tokentype.types._catch) {
    var clause = this.startNode();
    this.next();
    this.expect(_tokentype.types.parenL);
    clause.param = this.parseBindingAtom();
    this.checkLVal(clause.param, true);
    this.expect(_tokentype.types.parenR);
    clause.guard = null;
    clause.body = this.parseBlock();
    node.handler = this.finishNode(clause, "CatchClause");
  }
  node.guardedHandlers = empty;
  node.finalizer = this.eat(_tokentype.types._finally) ? this.parseBlock() : null;
  if (!node.handler && !node.finalizer) this.raise(node.start, "Missing catch or finally clause");
  return this.finishNode(node, "TryStatement");
};

pp.parseVarStatement = function (node, kind) {
  this.next();
  this.parseVar(node, false, kind);
  this.semicolon();
  return this.finishNode(node, "VariableDeclaration");
};

pp.parseWhileStatement = function (node) {
  this.next();
  node.test = this.parseParenExpression();
  this.labels.push(loopLabel);
  node.body = this.parseStatement(false);
  this.labels.pop();
  return this.finishNode(node, "WhileStatement");
};

pp.parseWithStatement = function (node) {
  if (this.strict) this.raise(this.start, "'with' in strict mode");
  this.next();
  node.object = this.parseParenExpression();
  node.body = this.parseStatement(false);
  return this.finishNode(node, "WithStatement");
};

pp.parseEmptyStatement = function (node) {
  this.next();
  return this.finishNode(node, "EmptyStatement");
};

pp.parseLabeledStatement = function (node, maybeName, expr) {
  for (var i = 0; i < this.labels.length; ++i) {
    if (this.labels[i].name === maybeName) this.raise(expr.start, "Label '" + maybeName + "' is already declared");
  }var kind = this.type.isLoop ? "loop" : this.type === _tokentype.types._switch ? "switch" : null;
  this.labels.push({ name: maybeName, kind: kind });
  node.body = this.parseStatement(true);
  this.labels.pop();
  node.label = expr;
  return this.finishNode(node, "LabeledStatement");
};

pp.parseExpressionStatement = function (node, expr) {
  node.expression = expr;
  this.semicolon();
  return this.finishNode(node, "ExpressionStatement");
};

// Parse a semicolon-enclosed block of statements, handling `"use
// strict"` declarations when `allowStrict` is true (used for
// function bodies).

pp.parseBlock = function (allowStrict) {
  var node = this.startNode(),
      first = true,
      oldStrict = undefined;
  node.body = [];
  this.expect(_tokentype.types.braceL);
  while (!this.eat(_tokentype.types.braceR)) {
    var stmt = this.parseStatement(true);
    node.body.push(stmt);
    if (first && allowStrict && this.isUseStrict(stmt)) {
      oldStrict = this.strict;
      this.setStrict(this.strict = true);
    }
    first = false;
  }
  if (oldStrict === false) this.setStrict(false);
  return this.finishNode(node, "BlockStatement");
};

// Parse a regular `for` loop. The disambiguation code in
// `parseStatement` will already have parsed the init statement or
// expression.

pp.parseFor = function (node, init) {
  node.init = init;
  this.expect(_tokentype.types.semi);
  node.test = this.type === _tokentype.types.semi ? null : this.parseExpression();
  this.expect(_tokentype.types.semi);
  node.update = this.type === _tokentype.types.parenR ? null : this.parseExpression();
  this.expect(_tokentype.types.parenR);
  node.body = this.parseStatement(false);
  this.labels.pop();
  return this.finishNode(node, "ForStatement");
};

// Parse a `for`/`in` and `for`/`of` loop, which are almost
// same from parser's perspective.

pp.parseForIn = function (node, init) {
  var type = this.type === _tokentype.types._in ? "ForInStatement" : "ForOfStatement";
  this.next();
  node.left = init;
  node.right = this.parseExpression();
  this.expect(_tokentype.types.parenR);
  node.body = this.parseStatement(false);
  this.labels.pop();
  return this.finishNode(node, type);
};

// Parse a list of variable declarations.

pp.parseVar = function (node, isFor, kind) {
  node.declarations = [];
  node.kind = kind.keyword;
  for (;;) {
    var decl = this.startNode();
    this.parseVarHead(decl);
    if (this.eat(_tokentype.types.eq)) {
      decl.init = this.parseMaybeAssign(isFor);
    } else if (kind === _tokentype.types._const && !(this.type === _tokentype.types._in || this.options.ecmaVersion >= 6 && this.isContextual("of"))) {
      this.unexpected();
    } else if (decl.id.type != "Identifier" && !(isFor && (this.type === _tokentype.types._in || this.isContextual("of")))) {
      this.raise(this.lastTokEnd, "Complex binding patterns require an initialization value");
    } else {
      decl.init = null;
    }
    node.declarations.push(this.finishNode(decl, "VariableDeclarator"));
    if (!this.eat(_tokentype.types.comma)) break;
  }
  return node;
};

pp.parseVarHead = function (decl) {
  decl.id = this.parseBindingAtom();
  this.checkLVal(decl.id, true);
};

// Parse a function declaration or literal (depending on the
// `isStatement` parameter).

pp.parseFunction = function (node, isStatement, allowExpressionBody, isAsync) {
  this.initFunction(node, isAsync);
  if (this.options.ecmaVersion >= 6) node.generator = this.eat(_tokentype.types.star);
  if (isStatement || this.type === _tokentype.types.name) node.id = this.parseIdent();
  this.parseFunctionParams(node);
  this.parseFunctionBody(node, allowExpressionBody);
  return this.finishNode(node, isStatement ? "FunctionDeclaration" : "FunctionExpression");
};

pp.parseFunctionParams = function (node) {
  this.expect(_tokentype.types.parenL);
  node.params = this.parseBindingList(_tokentype.types.parenR, false, this.options.features["es7.trailingFunctionCommas"]);
};

// Parse a class declaration or literal (depending on the
// `isStatement` parameter).

pp.parseClass = function (node, isStatement) {
  this.next();
  this.parseClassId(node, isStatement);
  this.parseClassSuper(node);
  var classBody = this.startNode();
  classBody.body = [];
  this.expect(_tokentype.types.braceL);
  var decorators = [];
  while (!this.eat(_tokentype.types.braceR)) {
    if (this.eat(_tokentype.types.semi)) continue;
    if (this.type === _tokentype.types.at) {
      decorators.push(this.parseDecorator());
      continue;
    }
    var method = this.startNode();
    if (decorators.length) {
      method.decorators = decorators;
      decorators = [];
    }
    var isGenerator = this.eat(_tokentype.types.star),
        isAsync = false;
    this.parsePropertyName(method);
    if (this.type !== _tokentype.types.parenL && !method.computed && method.key.type === "Identifier" && method.key.name === "static") {
      if (isGenerator) this.unexpected();
      method["static"] = true;
      isGenerator = this.eat(_tokentype.types.star);
      this.parsePropertyName(method);
    } else {
      method["static"] = false;
    }
    if (!isGenerator && method.key.type === "Identifier" && !method.computed && this.isClassProperty()) {
      classBody.body.push(this.parseClassProperty(method));
      continue;
    }
    if (this.options.features["es7.asyncFunctions"] && this.type !== _tokentype.types.parenL && !method.computed && method.key.type === "Identifier" && method.key.name === "async") {
      isAsync = true;
      this.parsePropertyName(method);
    }
    method.kind = "method";
    if (!method.computed && !isGenerator && !isAsync) {
      if (method.key.type === "Identifier") {
        if (this.type !== _tokentype.types.parenL && (method.key.name === "get" || method.key.name === "set")) {
          method.kind = method.key.name;
          this.parsePropertyName(method);
        } else if (!method["static"] && method.key.name === "constructor") {
          method.kind = "constructor";
        }
      } else if (!method["static"] && method.key.type === "Literal" && method.key.value === "constructor") {
        method.kind = "constructor";
      }
    }
    if (method.kind === "constructor" && method.decorators) {
      this.raise(method.start, "You can't attach decorators to a class constructor");
    }
    this.parseClassMethod(classBody, method, isGenerator, isAsync);
  }
  if (decorators.length) {
    this.raise(this.start, "You have trailing decorators with no method");
  }
  node.body = this.finishNode(classBody, "ClassBody");
  return this.finishNode(node, isStatement ? "ClassDeclaration" : "ClassExpression");
};

pp.isClassProperty = function () {
  return this.type === _tokentype.types.eq || (this.type === _tokentype.types.semi || this.canInsertSemicolon());
};

pp.parseClassProperty = function (node) {
  if (this.type === _tokentype.types.eq) {
    if (!this.options.features["es7.classProperties"]) this.unexpected();
    this.next();
    node.value = this.parseMaybeAssign();
  } else {
    node.value = null;
  }
  this.semicolon();
  return this.finishNode(node, "ClassProperty");
};

pp.parseClassMethod = function (classBody, method, isGenerator, isAsync) {
  method.value = this.parseMethod(isGenerator, isAsync);
  classBody.body.push(this.finishNode(method, "MethodDefinition"));
};

pp.parseClassId = function (node, isStatement) {
  node.id = this.type === _tokentype.types.name ? this.parseIdent() : isStatement ? this.unexpected() : null;
};

pp.parseClassSuper = function (node) {
  node.superClass = this.eat(_tokentype.types._extends) ? this.parseExprSubscripts() : null;
};

// Parses module export declaration.

pp.parseExport = function (node) {
  this.next();
  // export * from '...'
  if (this.type === _tokentype.types.star) {
    var specifier = this.startNode();
    this.next();
    if (this.options.features["es7.exportExtensions"] && this.eatContextual("as")) {
      specifier.exported = this.parseIdent();
      node.specifiers = [this.finishNode(specifier, "ExportNamespaceSpecifier")];
      this.parseExportSpecifiersMaybe(node);
      this.parseExportFrom(node);
    } else {
      this.parseExportFrom(node);
      return this.finishNode(node, "ExportAllDeclaration");
    }
  } else if (this.isExportDefaultSpecifier()) {
    var specifier = this.startNode();
    specifier.exported = this.parseIdent(true);
    node.specifiers = [this.finishNode(specifier, "ExportDefaultSpecifier")];
    if (this.type === _tokentype.types.comma && this.lookahead().type === _tokentype.types.star) {
      this.expect(_tokentype.types.comma);
      var _specifier = this.startNode();
      this.expect(_tokentype.types.star);
      this.expectContextual("as");
      _specifier.exported = this.parseIdent();
      node.specifiers.push(this.finishNode(_specifier, "ExportNamespaceSpecifier"));
    } else {
      this.parseExportSpecifiersMaybe(node);
    }
    this.parseExportFrom(node);
  } else if (this.eat(_tokentype.types._default)) {
    // export default ...
    var _expr = this.parseMaybeAssign();
    var needsSemi = true;
    if (_expr.type == "FunctionExpression" || _expr.type == "ClassExpression") {
      needsSemi = false;
      if (_expr.id) {
        _expr.type = _expr.type == "FunctionExpression" ? "FunctionDeclaration" : "ClassDeclaration";
      }
    }
    node.declaration = _expr;
    if (needsSemi) this.semicolon();
    this.checkExport(node);
    return this.finishNode(node, "ExportDefaultDeclaration");
  } else if (this.type.keyword || this.shouldParseExportDeclaration()) {
    node.declaration = this.parseStatement(true);
    node.specifiers = [];
    node.source = null;
  } else {
    // export { x, y as z } [from '...']
    node.declaration = null;
    node.specifiers = this.parseExportSpecifiers();
    if (this.eatContextual("from")) {
      node.source = this.type === _tokentype.types.string ? this.parseExprAtom() : this.unexpected();
    } else {
      node.source = null;
    }
    this.semicolon();
  }
  this.checkExport(node);
  return this.finishNode(node, "ExportNamedDeclaration");
};

pp.isExportDefaultSpecifier = function () {
  if (this.type === _tokentype.types.name) {
    return this.value !== "type" && this.value !== "async";
  }

  if (this.type !== _tokentype.types._default) {
    return false;
  }

  var lookahead = this.lookahead();
  return lookahead.type === _tokentype.types.comma || lookahead.type === _tokentype.types.name && lookahead.value === "from";
};

pp.parseExportSpecifiersMaybe = function (node) {
  if (this.eat(_tokentype.types.comma)) {
    node.specifiers = node.specifiers.concat(this.parseExportSpecifiers());
  }
};

pp.parseExportFrom = function (node) {
  this.expectContextual("from");
  node.source = this.type === _tokentype.types.string ? this.parseExprAtom() : this.unexpected();
  this.semicolon();
  this.checkExport(node);
};

pp.shouldParseExportDeclaration = function () {
  return this.options.features["es7.asyncFunctions"] && this.isContextual("async");
};

pp.checkExport = function (node) {
  if (this.decorators.length) {
    var isClass = node.declaration && (node.declaration.type === "ClassDeclaration" || node.declaration.type === "ClassExpression");
    if (!node.declaration || !isClass) {
      this.raise(node.start, "You can only use decorators on an export when exporting a class");
    }
    this.takeDecorators(node.declaration);
  }
};

// Parses a comma-separated list of module exports.

pp.parseExportSpecifiers = function () {
  var nodes = [],
      first = true;
  // export { x, y as z } [from '...']
  this.expect(_tokentype.types.braceL);
  while (!this.eat(_tokentype.types.braceR)) {
    if (!first) {
      this.expect(_tokentype.types.comma);
      if (this.afterTrailingComma(_tokentype.types.braceR)) break;
    } else first = false;

    var node = this.startNode();
    node.local = this.parseIdent(this.type === _tokentype.types._default);
    node.exported = this.eatContextual("as") ? this.parseIdent(true) : node.local;
    nodes.push(this.finishNode(node, "ExportSpecifier"));
  }
  return nodes;
};

// Parses import declaration.

pp.parseImport = function (node) {
  this.next();
  // import '...'
  if (this.type === _tokentype.types.string) {
    node.specifiers = empty;
    node.source = this.parseExprAtom();
  } else {
    node.specifiers = [];
    this.parseImportSpecifiers(node);
    this.expectContextual("from");
    node.source = this.type === _tokentype.types.string ? this.parseExprAtom() : this.unexpected();
  }
  this.semicolon();
  return this.finishNode(node, "ImportDeclaration");
};

// Parses a comma-separated list of module imports.

pp.parseImportSpecifiers = function (node) {
  var first = true;
  if (this.type === _tokentype.types.name) {
    // import defaultObj, { x, y as z } from '...'
    var start = this.markPosition();
    node.specifiers.push(this.parseImportSpecifierDefault(this.parseIdent(), start));
    if (!this.eat(_tokentype.types.comma)) return;
  }
  if (this.type === _tokentype.types.star) {
    var specifier = this.startNode();
    this.next();
    this.expectContextual("as");
    specifier.local = this.parseIdent();
    this.checkLVal(specifier.local, true);
    node.specifiers.push(this.finishNode(specifier, "ImportNamespaceSpecifier"));
    return;
  }
  this.expect(_tokentype.types.braceL);
  while (!this.eat(_tokentype.types.braceR)) {
    if (!first) {
      this.expect(_tokentype.types.comma);
      if (this.afterTrailingComma(_tokentype.types.braceR)) break;
    } else first = false;

    var specifier = this.startNode();
    specifier.imported = this.parseIdent(true);
    specifier.local = this.eatContextual("as") ? this.parseIdent() : specifier.imported;
    this.checkLVal(specifier.local, true);
    node.specifiers.push(this.finishNode(specifier, "ImportSpecifier"));
  }
};

pp.parseImportSpecifierDefault = function (id, start) {
  var node = this.startNodeAt(start);
  node.local = id;
  this.checkLVal(node.local, true);
  return this.finishNode(node, "ImportDefaultSpecifier");
};
},{"./state":12,"./tokentype":16,"./whitespace":18}],14:[function(require,module,exports){
// The algorithm used to determine whether a regexp can appear at a
// given point in the program is loosely based on sweet.js' approach.
// See https://github.com/mozilla/sweet.js/wiki/design

"use strict";

exports.__esModule = true;

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var _state = require("./state");

var _tokentype = require("./tokentype");

var _whitespace = require("./whitespace");

var TokContext = function TokContext(token, isExpr, preserveSpace, override) {
  _classCallCheck(this, TokContext);

  this.token = token;
  this.isExpr = isExpr;
  this.preserveSpace = preserveSpace;
  this.override = override;
};

exports.TokContext = TokContext;
var types = {
  b_stat: new TokContext("{", false),
  b_expr: new TokContext("{", true),
  b_tmpl: new TokContext("${", true),
  p_stat: new TokContext("(", false),
  p_expr: new TokContext("(", true),
  q_tmpl: new TokContext("`", true, true, function (p) {
    return p.readTmplToken();
  }),
  f_expr: new TokContext("function", true)
};

exports.types = types;
var pp = _state.Parser.prototype;

pp.initialContext = function () {
  return [types.b_stat];
};

pp.braceIsBlock = function (prevType) {
  var parent = undefined;
  if (prevType === _tokentype.types.colon && (parent = this.curContext()).token == "{") return !parent.isExpr;
  if (prevType === _tokentype.types._return) return _whitespace.lineBreak.test(this.input.slice(this.lastTokEnd, this.start));
  if (prevType === _tokentype.types._else || prevType === _tokentype.types.semi || prevType === _tokentype.types.eof) return true;
  if (prevType == _tokentype.types.braceL) return this.curContext() === types.b_stat;
  return !this.exprAllowed;
};

pp.updateContext = function (prevType) {
  var update = undefined,
      type = this.type;
  if (type.keyword && prevType == _tokentype.types.dot) this.exprAllowed = false;else if (update = type.updateContext) update.call(this, prevType);else this.exprAllowed = type.beforeExpr;
};

// Token-specific context update code

_tokentype.types.parenR.updateContext = _tokentype.types.braceR.updateContext = function () {
  if (this.context.length == 1) {
    this.exprAllowed = true;
    return;
  }
  var out = this.context.pop();
  if (out === types.b_stat && this.curContext() === types.f_expr) {
    this.context.pop();
    this.exprAllowed = false;
  } else if (out === types.b_tmpl) {
    this.exprAllowed = true;
  } else {
    this.exprAllowed = !out.isExpr;
  }
};

_tokentype.types.braceL.updateContext = function (prevType) {
  this.context.push(this.braceIsBlock(prevType) ? types.b_stat : types.b_expr);
  this.exprAllowed = true;
};

_tokentype.types.dollarBraceL.updateContext = function () {
  this.context.push(types.b_tmpl);
  this.exprAllowed = true;
};

_tokentype.types.parenL.updateContext = function (prevType) {
  var statementParens = prevType === _tokentype.types._if || prevType === _tokentype.types._for || prevType === _tokentype.types._with || prevType === _tokentype.types._while;
  this.context.push(statementParens ? types.p_stat : types.p_expr);
  this.exprAllowed = true;
};

_tokentype.types.incDec.updateContext = function () {};

_tokentype.types._function.updateContext = function () {
  if (this.curContext() !== types.b_stat) this.context.push(types.f_expr);
  this.exprAllowed = false;
};

_tokentype.types.backQuote.updateContext = function () {
  if (this.curContext() === types.q_tmpl) this.context.pop();else this.context.push(types.q_tmpl);
  this.exprAllowed = false;
};

// tokExprAllowed stays unchanged
},{"./state":12,"./tokentype":16,"./whitespace":18}],15:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var _identifier = require("./identifier");

var _tokentype = require("./tokentype");

var _state = require("./state");

var _location = require("./location");

var _whitespace = require("./whitespace");

// Object type used to represent tokens. Note that normally, tokens
// simply exist as properties on the parser object. This is only
// used for the onToken callback and the external tokenizer.

var Token = function Token(p) {
  _classCallCheck(this, Token);

  this.type = p.type;
  this.value = p.value;
  this.start = p.start;
  this.end = p.end;
  if (p.options.locations) this.loc = new _location.SourceLocation(p, p.startLoc, p.endLoc);
  if (p.options.ranges) this.range = [p.start, p.end];
};

exports.Token = Token;

// ## Tokenizer

var pp = _state.Parser.prototype;

// Move to the next token

pp.next = function () {
  if (this.options.onToken && !this.isLookahead) this.options.onToken(new Token(this));

  this.lastTokEnd = this.end;
  this.lastTokStart = this.start;
  this.lastTokEndLoc = this.endLoc;
  this.lastTokStartLoc = this.startLoc;
  this.nextToken();
};

pp.getToken = function () {
  this.next();
  return new Token(this);
};

// If we're in an ES6 environment, make parsers iterable
if (typeof Symbol !== "undefined") pp[Symbol.iterator] = function () {
  var self = this;
  return { next: function next() {
      var token = self.getToken();
      return {
        done: token.type === _tokentype.types.eof,
        value: token
      };
    } };
};

// Toggle strict mode. Re-reads the next number or string to please
// pedantic tests (`"use strict"; 010;` should fail).

pp.setStrict = function (strict) {
  this.strict = strict;
  if (this.type !== _tokentype.types.num && this.type !== _tokentype.types.string) return;
  this.pos = this.start;
  if (this.options.locations) {
    while (this.pos < this.lineStart) {
      this.lineStart = this.input.lastIndexOf("\n", this.lineStart - 2) + 1;
      --this.curLine;
    }
  }
  this.nextToken();
};

pp.curContext = function () {
  return this.context[this.context.length - 1];
};

// Read a single token, updating the parser object's token-related
// properties.

pp.nextToken = function () {
  var curContext = this.curContext();
  if (!curContext || !curContext.preserveSpace) this.skipSpace();

  this.start = this.pos;
  if (this.options.locations) this.startLoc = this.curPosition();
  if (this.pos >= this.input.length) return this.finishToken(_tokentype.types.eof);

  if (curContext.override) return curContext.override(this);else this.readToken(this.fullCharCodeAtPos());
};

pp.readToken = function (code) {
  // Identifier or keyword. '\uXXXX' sequences are allowed in
  // identifiers, so '\' also dispatches to that.
  if ((0, _identifier.isIdentifierStart)(code, this.options.ecmaVersion >= 6) || code === 92 /* '\' */) return this.readWord();

  return this.getTokenFromCode(code);
};

pp.fullCharCodeAtPos = function () {
  var code = this.input.charCodeAt(this.pos);
  if (code <= 55295 || code >= 57344) return code;
  var next = this.input.charCodeAt(this.pos + 1);
  return (code << 10) + next - 56613888;
};

pp.skipBlockComment = function () {
  var startLoc = this.options.onComment && this.options.locations && this.curPosition();
  var start = this.pos,
      end = this.input.indexOf("*/", this.pos += 2);
  if (end === -1) this.raise(this.pos - 2, "Unterminated comment");
  this.pos = end + 2;
  if (this.options.locations) {
    _whitespace.lineBreakG.lastIndex = start;
    var match = undefined;
    while ((match = _whitespace.lineBreakG.exec(this.input)) && match.index < this.pos) {
      ++this.curLine;
      this.lineStart = match.index + match[0].length;
    }
  }
  if (this.options.onComment) this.options.onComment(true, this.input.slice(start + 2, end), start, this.pos, startLoc, this.options.locations && this.curPosition());
};

pp.skipLineComment = function (startSkip) {
  var start = this.pos;
  var startLoc = this.options.onComment && this.options.locations && this.curPosition();
  var ch = this.input.charCodeAt(this.pos += startSkip);
  while (this.pos < this.input.length && ch !== 10 && ch !== 13 && ch !== 8232 && ch !== 8233) {
    ++this.pos;
    ch = this.input.charCodeAt(this.pos);
  }
  if (this.options.onComment) this.options.onComment(false, this.input.slice(start + startSkip, this.pos), start, this.pos, startLoc, this.options.locations && this.curPosition());
};

// Called at the start of the parse and after every token. Skips
// whitespace and comments, and.

pp.skipSpace = function () {
  while (this.pos < this.input.length) {
    var ch = this.input.charCodeAt(this.pos);
    if (ch === 32) {
      // ' '
      ++this.pos;
    } else if (ch === 13) {
      ++this.pos;
      var _next = this.input.charCodeAt(this.pos);
      if (_next === 10) {
        ++this.pos;
      }
      if (this.options.locations) {
        ++this.curLine;
        this.lineStart = this.pos;
      }
    } else if (ch === 10 || ch === 8232 || ch === 8233) {
      ++this.pos;
      if (this.options.locations) {
        ++this.curLine;
        this.lineStart = this.pos;
      }
    } else if (ch > 8 && ch < 14) {
      ++this.pos;
    } else if (ch === 47) {
      // '/'
      var _next2 = this.input.charCodeAt(this.pos + 1);
      if (_next2 === 42) {
        // '*'
        this.skipBlockComment();
      } else if (_next2 === 47) {
        // '/'
        this.skipLineComment(2);
      } else break;
    } else if (ch === 160) {
      // '\xa0'
      ++this.pos;
    } else if (ch >= 5760 && _whitespace.nonASCIIwhitespace.test(String.fromCharCode(ch))) {
      ++this.pos;
    } else {
      break;
    }
  }
};

// Called at the end of every token. Sets `end`, `val`, and
// maintains `context` and `exprAllowed`, and skips the space after
// the token, so that the next one's `start` will point at the
// right position.

pp.finishToken = function (type, val) {
  this.end = this.pos;
  if (this.options.locations) this.endLoc = this.curPosition();
  var prevType = this.type;
  this.type = type;
  this.value = val;

  this.updateContext(prevType);
};

// ### Token reading

// This is the function that is called to fetch the next token. It
// is somewhat obscure, because it works in character codes rather
// than characters, and because operator parsing has been inlined
// into it.
//
// All in the name of speed.
//
pp.readToken_dot = function () {
  var next = this.input.charCodeAt(this.pos + 1);
  if (next >= 48 && next <= 57) return this.readNumber(true);
  var next2 = this.input.charCodeAt(this.pos + 2);
  if (this.options.ecmaVersion >= 6 && next === 46 && next2 === 46) {
    // 46 = dot '.'
    this.pos += 3;
    return this.finishToken(_tokentype.types.ellipsis);
  } else {
    ++this.pos;
    return this.finishToken(_tokentype.types.dot);
  }
};

pp.readToken_slash = function () {
  // '/'
  var next = this.input.charCodeAt(this.pos + 1);
  if (this.exprAllowed) {
    ++this.pos;return this.readRegexp();
  }
  if (next === 61) return this.finishOp(_tokentype.types.assign, 2);
  return this.finishOp(_tokentype.types.slash, 1);
};

pp.readToken_mult_modulo = function (code) {
  // '%*'
  var type = code === 42 ? _tokentype.types.star : _tokentype.types.modulo;
  var width = 1;
  var next = this.input.charCodeAt(this.pos + 1);

  if (next === 42) {
    // '*'
    width++;
    next = this.input.charCodeAt(this.pos + 2);
    type = _tokentype.types.exponent;
  }

  if (next === 61) {
    width++;
    type = _tokentype.types.assign;
  }

  return this.finishOp(type, width);
};

pp.readToken_pipe_amp = function (code) {
  // '|&'
  var next = this.input.charCodeAt(this.pos + 1);
  if (next === code) return this.finishOp(code === 124 ? _tokentype.types.logicalOR : _tokentype.types.logicalAND, 2);
  if (next === 61) return this.finishOp(_tokentype.types.assign, 2);
  return this.finishOp(code === 124 ? _tokentype.types.bitwiseOR : _tokentype.types.bitwiseAND, 1);
};

pp.readToken_caret = function () {
  // '^'
  var next = this.input.charCodeAt(this.pos + 1);
  if (next === 61) return this.finishOp(_tokentype.types.assign, 2);
  return this.finishOp(_tokentype.types.bitwiseXOR, 1);
};

pp.readToken_plus_min = function (code) {
  // '+-'
  var next = this.input.charCodeAt(this.pos + 1);
  if (next === code) {
    if (next == 45 && this.input.charCodeAt(this.pos + 2) == 62 && _whitespace.lineBreak.test(this.input.slice(this.lastTokEnd, this.pos))) {
      // A `-->` line comment
      this.skipLineComment(3);
      this.skipSpace();
      return this.nextToken();
    }
    return this.finishOp(_tokentype.types.incDec, 2);
  }
  if (next === 61) return this.finishOp(_tokentype.types.assign, 2);
  return this.finishOp(_tokentype.types.plusMin, 1);
};

pp.readToken_lt_gt = function (code) {
  // '<>'
  var next = this.input.charCodeAt(this.pos + 1);
  var size = 1;
  if (next === code) {
    size = code === 62 && this.input.charCodeAt(this.pos + 2) === 62 ? 3 : 2;
    if (this.input.charCodeAt(this.pos + size) === 61) return this.finishOp(_tokentype.types.assign, size + 1);
    return this.finishOp(_tokentype.types.bitShift, size);
  }
  if (next == 33 && code == 60 && this.input.charCodeAt(this.pos + 2) == 45 && this.input.charCodeAt(this.pos + 3) == 45) {
    if (this.inModule) this.unexpected();
    // `<!--`, an XML-style comment that should be interpreted as a line comment
    this.skipLineComment(4);
    this.skipSpace();
    return this.nextToken();
  }
  if (next === 61) size = this.input.charCodeAt(this.pos + 2) === 61 ? 3 : 2;
  return this.finishOp(_tokentype.types.relational, size);
};

pp.readToken_eq_excl = function (code) {
  // '=!'
  var next = this.input.charCodeAt(this.pos + 1);
  if (next === 61) return this.finishOp(_tokentype.types.equality, this.input.charCodeAt(this.pos + 2) === 61 ? 3 : 2);
  if (code === 61 && next === 62 && this.options.ecmaVersion >= 6) {
    // '=>'
    this.pos += 2;
    return this.finishToken(_tokentype.types.arrow);
  }
  return this.finishOp(code === 61 ? _tokentype.types.eq : _tokentype.types.prefix, 1);
};

pp.getTokenFromCode = function (code) {
  switch (code) {
    // The interpretation of a dot depends on whether it is followed
    // by a digit or another two dots.
    case 46:
      // '.'
      return this.readToken_dot();

    // Punctuation tokens.
    case 40:
      ++this.pos;return this.finishToken(_tokentype.types.parenL);
    case 41:
      ++this.pos;return this.finishToken(_tokentype.types.parenR);
    case 59:
      ++this.pos;return this.finishToken(_tokentype.types.semi);
    case 44:
      ++this.pos;return this.finishToken(_tokentype.types.comma);
    case 91:
      ++this.pos;return this.finishToken(_tokentype.types.bracketL);
    case 93:
      ++this.pos;return this.finishToken(_tokentype.types.bracketR);
    case 123:
      ++this.pos;return this.finishToken(_tokentype.types.braceL);
    case 125:
      ++this.pos;return this.finishToken(_tokentype.types.braceR);

    case 58:
      if (this.options.features["es7.functionBind"] && this.input.charCodeAt(this.pos + 1) === 58) return this.finishOp(_tokentype.types.doubleColon, 2);
      ++this.pos;
      return this.finishToken(_tokentype.types.colon);

    case 63:
      ++this.pos;return this.finishToken(_tokentype.types.question);
    case 64:
      ++this.pos;return this.finishToken(_tokentype.types.at);

    case 96:
      // '`'
      if (this.options.ecmaVersion < 6) break;
      ++this.pos;
      return this.finishToken(_tokentype.types.backQuote);

    case 48:
      // '0'
      var next = this.input.charCodeAt(this.pos + 1);
      if (next === 120 || next === 88) return this.readRadixNumber(16); // '0x', '0X' - hex number
      if (this.options.ecmaVersion >= 6) {
        if (next === 111 || next === 79) return this.readRadixNumber(8); // '0o', '0O' - octal number
        if (next === 98 || next === 66) return this.readRadixNumber(2); // '0b', '0B' - binary number
      }
    // Anything else beginning with a digit is an integer, octal
    // number, or float.
    case 49:case 50:case 51:case 52:case 53:case 54:case 55:case 56:case 57:
      // 1-9
      return this.readNumber(false);

    // Quotes produce strings.
    case 34:case 39:
      // '"', "'"
      return this.readString(code);

    // Operators are parsed inline in tiny state machines. '=' (61) is
    // often referred to. `finishOp` simply skips the amount of
    // characters it is given as second argument, and returns a token
    // of the type given by its first argument.

    case 47:
      // '/'
      return this.readToken_slash();

    case 37:case 42:
      // '%*'
      return this.readToken_mult_modulo(code);

    case 124:case 38:
      // '|&'
      return this.readToken_pipe_amp(code);

    case 94:
      // '^'
      return this.readToken_caret();

    case 43:case 45:
      // '+-'
      return this.readToken_plus_min(code);

    case 60:case 62:
      // '<>'
      return this.readToken_lt_gt(code);

    case 61:case 33:
      // '=!'
      return this.readToken_eq_excl(code);

    case 126:
      // '~'
      return this.finishOp(_tokentype.types.prefix, 1);
  }

  this.raise(this.pos, "Unexpected character '" + codePointToString(code) + "'");
};

pp.finishOp = function (type, size) {
  var str = this.input.slice(this.pos, this.pos + size);
  this.pos += size;
  return this.finishToken(type, str);
};

var regexpUnicodeSupport = false;
try {
  new RegExp("￿", "u");regexpUnicodeSupport = true;
} catch (e) {}

// Parse a regular expression. Some context-awareness is necessary,
// since a '/' inside a '[]' set does not end the expression.

pp.readRegexp = function () {
  var escaped = undefined,
      inClass = undefined,
      start = this.pos;
  for (;;) {
    if (this.pos >= this.input.length) this.raise(start, "Unterminated regular expression");
    var ch = this.input.charAt(this.pos);
    if (_whitespace.lineBreak.test(ch)) this.raise(start, "Unterminated regular expression");
    if (!escaped) {
      if (ch === "[") inClass = true;else if (ch === "]" && inClass) inClass = false;else if (ch === "/" && !inClass) break;
      escaped = ch === "\\";
    } else escaped = false;
    ++this.pos;
  }
  var content = this.input.slice(start, this.pos);
  ++this.pos;
  // Need to use `readWord1` because '\uXXXX' sequences are allowed
  // here (don't ask).
  var mods = this.readWord1();
  var tmp = content;
  if (mods) {
    var validFlags = /^[gmsiy]*$/;
    if (this.options.ecmaVersion >= 6) validFlags = /^[gmsiyu]*$/;
    if (!validFlags.test(mods)) this.raise(start, "Invalid regular expression flag");
    if (mods.indexOf("u") >= 0 && !regexpUnicodeSupport) {
      // Replace each astral symbol and every Unicode escape sequence that
      // possibly represents an astral symbol or a paired surrogate with a
      // single ASCII symbol to avoid throwing on regular expressions that
      // are only valid in combination with the `/u` flag.
      // Note: replacing with the ASCII symbol `x` might cause false
      // negatives in unlikely scenarios. For example, `[\u{61}-b]` is a
      // perfectly valid pattern that is equivalent to `[a-b]`, but it would
      // be replaced by `[x-b]` which throws an error.
      tmp = tmp.replace(/\\u([a-fA-F0-9]{4})|\\u\{([0-9a-fA-F]+)\}|[\uD800-\uDBFF][\uDC00-\uDFFF]/g, "x");
    }
  }
  // Detect invalid regular expressions.
  try {
    new RegExp(tmp);
  } catch (e) {
    if (e instanceof SyntaxError) this.raise(start, "Error parsing regular expression: " + e.message);
    this.raise(e);
  }
  // Get a regular expression object for this pattern-flag pair, or `null` in
  // case the current environment doesn't support the flags it uses.
  var value = undefined;
  try {
    value = new RegExp(content, mods);
  } catch (err) {
    value = null;
  }
  return this.finishToken(_tokentype.types.regexp, { pattern: content, flags: mods, value: value });
};

// Read an integer in the given radix. Return null if zero digits
// were read, the integer value otherwise. When `len` is given, this
// will return `null` unless the integer has exactly `len` digits.

pp.readInt = function (radix, len) {
  var start = this.pos,
      total = 0;
  for (var i = 0, e = len == null ? Infinity : len; i < e; ++i) {
    var code = this.input.charCodeAt(this.pos),
        val = undefined;
    if (code >= 97) val = code - 97 + 10; // a
    else if (code >= 65) val = code - 65 + 10; // A
    else if (code >= 48 && code <= 57) val = code - 48; // 0-9
    else val = Infinity;
    if (val >= radix) break;
    ++this.pos;
    total = total * radix + val;
  }
  if (this.pos === start || len != null && this.pos - start !== len) return null;

  return total;
};

pp.readRadixNumber = function (radix) {
  this.pos += 2; // 0x
  var val = this.readInt(radix);
  if (val == null) this.raise(this.start + 2, "Expected number in radix " + radix);
  if ((0, _identifier.isIdentifierStart)(this.fullCharCodeAtPos())) this.raise(this.pos, "Identifier directly after number");
  return this.finishToken(_tokentype.types.num, val);
};

// Read an integer, octal integer, or floating-point number.

pp.readNumber = function (startsWithDot) {
  var start = this.pos,
      isFloat = false,
      octal = this.input.charCodeAt(this.pos) === 48;
  if (!startsWithDot && this.readInt(10) === null) this.raise(start, "Invalid number");
  if (this.input.charCodeAt(this.pos) === 46) {
    ++this.pos;
    this.readInt(10);
    isFloat = true;
  }
  var next = this.input.charCodeAt(this.pos);
  if (next === 69 || next === 101) {
    // 'eE'
    next = this.input.charCodeAt(++this.pos);
    if (next === 43 || next === 45) ++this.pos; // '+-'
    if (this.readInt(10) === null) this.raise(start, "Invalid number");
    isFloat = true;
  }
  if ((0, _identifier.isIdentifierStart)(this.fullCharCodeAtPos())) this.raise(this.pos, "Identifier directly after number");

  var str = this.input.slice(start, this.pos),
      val = undefined;
  if (isFloat) val = parseFloat(str);else if (!octal || str.length === 1) val = parseInt(str, 10);else if (/[89]/.test(str) || this.strict) this.raise(start, "Invalid number");else val = parseInt(str, 8);
  return this.finishToken(_tokentype.types.num, val);
};

// Read a string value, interpreting backslash-escapes.

pp.readCodePoint = function () {
  var ch = this.input.charCodeAt(this.pos),
      code = undefined;

  if (ch === 123) {
    if (this.options.ecmaVersion < 6) this.unexpected();
    ++this.pos;
    code = this.readHexChar(this.input.indexOf("}", this.pos) - this.pos);
    ++this.pos;
    if (code > 1114111) this.unexpected();
  } else {
    code = this.readHexChar(4);
  }
  return code;
};

function codePointToString(code) {
  // UTF-16 Decoding
  if (code <= 65535) return String.fromCharCode(code);
  return String.fromCharCode((code - 65536 >> 10) + 55296, (code - 65536 & 1023) + 56320);
}

pp.readString = function (quote) {
  var out = "",
      chunkStart = ++this.pos;
  for (;;) {
    if (this.pos >= this.input.length) this.raise(this.start, "Unterminated string constant");
    var ch = this.input.charCodeAt(this.pos);
    if (ch === quote) break;
    if (ch === 92) {
      // '\'
      out += this.input.slice(chunkStart, this.pos);
      out += this.readEscapedChar();
      chunkStart = this.pos;
    } else {
      if ((0, _whitespace.isNewLine)(ch)) this.raise(this.start, "Unterminated string constant");
      ++this.pos;
    }
  }
  out += this.input.slice(chunkStart, this.pos++);
  return this.finishToken(_tokentype.types.string, out);
};

// Reads template string tokens.

pp.readTmplToken = function () {
  var out = "",
      chunkStart = this.pos;
  for (;;) {
    if (this.pos >= this.input.length) this.raise(this.start, "Unterminated template");
    var ch = this.input.charCodeAt(this.pos);
    if (ch === 96 || ch === 36 && this.input.charCodeAt(this.pos + 1) === 123) {
      // '`', '${'
      if (this.pos === this.start && this.type === _tokentype.types.template) {
        if (ch === 36) {
          this.pos += 2;
          return this.finishToken(_tokentype.types.dollarBraceL);
        } else {
          ++this.pos;
          return this.finishToken(_tokentype.types.backQuote);
        }
      }
      out += this.input.slice(chunkStart, this.pos);
      return this.finishToken(_tokentype.types.template, out);
    }
    if (ch === 92) {
      // '\'
      out += this.input.slice(chunkStart, this.pos);
      out += this.readEscapedChar();
      chunkStart = this.pos;
    } else if ((0, _whitespace.isNewLine)(ch)) {
      out += this.input.slice(chunkStart, this.pos);
      ++this.pos;
      if (ch === 13 && this.input.charCodeAt(this.pos) === 10) {
        ++this.pos;
        out += "\n";
      } else {
        out += String.fromCharCode(ch);
      }
      if (this.options.locations) {
        ++this.curLine;
        this.lineStart = this.pos;
      }
      chunkStart = this.pos;
    } else {
      ++this.pos;
    }
  }
};

// Used to read escaped characters

pp.readEscapedChar = function () {
  var ch = this.input.charCodeAt(++this.pos);
  var octal = /^[0-7]+/.exec(this.input.slice(this.pos, this.pos + 3));
  if (octal) octal = octal[0];
  while (octal && parseInt(octal, 8) > 255) octal = octal.slice(0, -1);
  if (octal === "0") octal = null;
  ++this.pos;
  if (octal) {
    if (this.strict) this.raise(this.pos - 2, "Octal literal in strict mode");
    this.pos += octal.length - 1;
    return String.fromCharCode(parseInt(octal, 8));
  } else {
    switch (ch) {
      case 110:
        return "\n"; // 'n' -> '\n'
      case 114:
        return "\r"; // 'r' -> '\r'
      case 120:
        return String.fromCharCode(this.readHexChar(2)); // 'x'
      case 117:
        return codePointToString(this.readCodePoint()); // 'u'
      case 116:
        return "\t"; // 't' -> '\t'
      case 98:
        return "\b"; // 'b' -> '\b'
      case 118:
        return "\u000b"; // 'v' -> '\u000b'
      case 102:
        return "\f"; // 'f' -> '\f'
      case 48:
        return "\u0000"; // 0 -> '\0'
      case 13:
        if (this.input.charCodeAt(this.pos) === 10) ++this.pos; // '\r\n'
      case 10:
        // ' \n'
        if (this.options.locations) {
          this.lineStart = this.pos;++this.curLine;
        }
        return "";
      default:
        return String.fromCharCode(ch);
    }
  }
};

// Used to read character escape sequences ('\x', '\u', '\U').

pp.readHexChar = function (len) {
  var n = this.readInt(16, len);
  if (n === null) this.raise(this.start, "Bad character escape sequence");
  return n;
};

// Used to signal to callers of `readWord1` whether the word
// contained any escape sequences. This is needed because words with
// escape sequences must not be interpreted as keywords.

var containsEsc;

// Read an identifier, and return it as a string. Sets `containsEsc`
// to whether the word contained a '\u' escape.
//
// Incrementally adds only escaped chars, adding other chunks as-is
// as a micro-optimization.

pp.readWord1 = function () {
  containsEsc = false;
  var word = "",
      first = true,
      chunkStart = this.pos;
  var astral = this.options.ecmaVersion >= 6;
  while (this.pos < this.input.length) {
    var ch = this.fullCharCodeAtPos();
    if ((0, _identifier.isIdentifierChar)(ch, astral)) {
      this.pos += ch <= 65535 ? 1 : 2;
    } else if (ch === 92) {
      // "\"
      containsEsc = true;
      word += this.input.slice(chunkStart, this.pos);
      var escStart = this.pos;
      if (this.input.charCodeAt(++this.pos) != 117) // "u"
        this.raise(this.pos, "Expecting Unicode escape sequence \\uXXXX");
      ++this.pos;
      var esc = this.readCodePoint();
      if (!(first ? _identifier.isIdentifierStart : _identifier.isIdentifierChar)(esc, astral)) this.raise(escStart, "Invalid Unicode escape");
      word += codePointToString(esc);
      chunkStart = this.pos;
    } else {
      break;
    }
    first = false;
  }
  return word + this.input.slice(chunkStart, this.pos);
};

// Read an identifier or keyword token. Will check for reserved
// words when necessary.

pp.readWord = function () {
  var word = this.readWord1();
  var type = _tokentype.types.name;
  if ((this.options.ecmaVersion >= 6 || !containsEsc) && this.isKeyword(word)) type = _tokentype.keywords[word];
  return this.finishToken(type, word);
};
},{"./identifier":4,"./location":6,"./state":12,"./tokentype":16,"./whitespace":18}],16:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

// ## Token types

// The assignment of fine-grained, information-carrying type objects
// allows the tokenizer to store the information it has about a
// token in a way that is very cheap for the parser to look up.

// All token type variables start with an underscore, to make them
// easy to recognize.

// The `beforeExpr` property is used to disambiguate between regular
// expressions and divisions. It is set on all token types that can
// be followed by an expression (thus, a slash after them would be a
// regular expression).
//
// `isLoop` marks a keyword as starting a loop, which is important
// to know when parsing a label, in order to allow or disallow
// continue jumps to that label.

var TokenType = function TokenType(label) {
  var conf = arguments[1] === undefined ? {} : arguments[1];

  _classCallCheck(this, TokenType);

  this.label = label;
  this.keyword = conf.keyword;
  this.beforeExpr = !!conf.beforeExpr;
  this.startsExpr = !!conf.startsExpr;
  this.rightAssociative = !!conf.rightAssociative;
  this.isLoop = !!conf.isLoop;
  this.isAssign = !!conf.isAssign;
  this.prefix = !!conf.prefix;
  this.postfix = !!conf.postfix;
  this.binop = conf.binop || null;
  this.updateContext = null;
};

exports.TokenType = TokenType;

function binop(name, prec) {
  return new TokenType(name, { beforeExpr: true, binop: prec });
}
var beforeExpr = { beforeExpr: true },
    startsExpr = { startsExpr: true };

var types = {
  num: new TokenType("num", startsExpr),
  regexp: new TokenType("regexp", startsExpr),
  string: new TokenType("string", startsExpr),
  name: new TokenType("name", startsExpr),
  eof: new TokenType("eof"),

  // Punctuation token types.
  bracketL: new TokenType("[", { beforeExpr: true, startsExpr: true }),
  bracketR: new TokenType("]"),
  braceL: new TokenType("{", { beforeExpr: true, startsExpr: true }),
  braceR: new TokenType("}"),
  parenL: new TokenType("(", { beforeExpr: true, startsExpr: true }),
  parenR: new TokenType(")"),
  comma: new TokenType(",", beforeExpr),
  semi: new TokenType(";", beforeExpr),
  colon: new TokenType(":", beforeExpr),
  doubleColon: new TokenType("::", beforeExpr),
  dot: new TokenType("."),
  question: new TokenType("?", beforeExpr),
  arrow: new TokenType("=>", beforeExpr),
  template: new TokenType("template"),
  ellipsis: new TokenType("...", beforeExpr),
  backQuote: new TokenType("`", startsExpr),
  dollarBraceL: new TokenType("${", { beforeExpr: true, startsExpr: true }),
  at: new TokenType("@"),

  // Operators. These carry several kinds of properties to help the
  // parser use them properly (the presence of these properties is
  // what categorizes them as operators).
  //
  // `binop`, when present, specifies that this operator is a binary
  // operator, and will refer to its precedence.
  //
  // `prefix` and `postfix` mark the operator as a prefix or postfix
  // unary operator.
  //
  // `isAssign` marks all of `=`, `+=`, `-=` etcetera, which act as
  // binary operators with a very low precedence, that should result
  // in AssignmentExpression nodes.

  eq: new TokenType("=", { beforeExpr: true, isAssign: true }),
  assign: new TokenType("_=", { beforeExpr: true, isAssign: true }),
  incDec: new TokenType("++/--", { prefix: true, postfix: true, startsExpr: true }),
  prefix: new TokenType("prefix", { beforeExpr: true, prefix: true, startsExpr: true }),
  logicalOR: binop("||", 1),
  logicalAND: binop("&&", 2),
  bitwiseOR: binop("|", 3),
  bitwiseXOR: binop("^", 4),
  bitwiseAND: binop("&", 5),
  equality: binop("==/!=", 6),
  relational: binop("</>", 7),
  bitShift: binop("<</>>", 8),
  plusMin: new TokenType("+/-", { beforeExpr: true, binop: 9, prefix: true, startsExpr: true }),
  modulo: binop("%", 10),
  star: binop("*", 10),
  slash: binop("/", 10),
  exponent: new TokenType("**", { beforeExpr: true, binop: 11, rightAssociative: true })
};

exports.types = types;
// Map keyword names to token types.

var keywords = {};

exports.keywords = keywords;
// Succinct definitions of keyword token types
function kw(name) {
  var options = arguments[1] === undefined ? {} : arguments[1];

  options.keyword = name;
  keywords[name] = types["_" + name] = new TokenType(name, options);
}

kw("break");
kw("case", beforeExpr);
kw("catch");
kw("continue");
kw("debugger");
kw("default");
kw("do", { isLoop: true });
kw("else", beforeExpr);
kw("finally");
kw("for", { isLoop: true });
kw("function", startsExpr);
kw("if");
kw("return", beforeExpr);
kw("switch");
kw("throw", beforeExpr);
kw("try");
kw("var");
kw("let");
kw("const");
kw("while", { isLoop: true });
kw("with");
kw("new", { beforeExpr: true, startsExpr: true });
kw("this", startsExpr);
kw("super", startsExpr);
kw("class");
kw("extends", beforeExpr);
kw("export");
kw("import");
kw("yield", { beforeExpr: true, startsExpr: true });
kw("null", startsExpr);
kw("true", startsExpr);
kw("false", startsExpr);
kw("in", { beforeExpr: true, binop: 7 });
kw("instanceof", { beforeExpr: true, binop: 7 });
kw("typeof", { beforeExpr: true, prefix: true, startsExpr: true });
kw("void", { beforeExpr: true, prefix: true, startsExpr: true });
kw("delete", { beforeExpr: true, prefix: true, startsExpr: true });
},{}],17:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.isArray = isArray;

// Checks if an object has a property.

exports.has = has;

function isArray(obj) {
  return Object.prototype.toString.call(obj) === "[object Array]";
}

function has(obj, propName) {
  return Object.prototype.hasOwnProperty.call(obj, propName);
}
},{}],18:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.isNewLine = isNewLine;
// Matches a whole line break (where CRLF is considered a single
// line break). Used to count lines.

var lineBreak = /\r\n?|\n|\u2028|\u2029/;
exports.lineBreak = lineBreak;
var lineBreakG = new RegExp(lineBreak.source, "g");

exports.lineBreakG = lineBreakG;

function isNewLine(code) {
  return code === 10 || code === 13 || code === 8232 || code == 8233;
}

var nonASCIIwhitespace = /[\u1680\u180e\u2000-\u200a\u202f\u205f\u3000\ufeff]/;
exports.nonASCIIwhitespace = nonASCIIwhitespace;
},{}],19:[function(require,module,exports){
(function (global){
"use strict";

require("./node");
var transform = module.exports = require("../transformation");

transform.options = require("../transformation/file/options");
transform.version = require("../../../package").version;

transform.transform = transform;

transform.run = function (code) {
  var opts = arguments[1] === undefined ? {} : arguments[1];

  opts.sourceMaps = "inline";
  return new Function(transform(code, opts).code)();
};

transform.load = function (url, callback, _x2, hold) {
  var opts = arguments[2] === undefined ? {} : arguments[2];

  opts.filename = opts.filename || url;

  var xhr = global.ActiveXObject ? new global.ActiveXObject("Microsoft.XMLHTTP") : new global.XMLHttpRequest();
  xhr.open("GET", url, true);
  if ("overrideMimeType" in xhr) xhr.overrideMimeType("text/plain");

  xhr.onreadystatechange = function () {
    if (xhr.readyState !== 4) return;

    var status = xhr.status;
    if (status === 0 || status === 200) {
      var param = [xhr.responseText, opts];
      if (!hold) transform.run.apply(transform, param);
      if (callback) callback(param);
    } else {
      throw new Error("Could not load " + url);
    }
  };

  xhr.send(null);
};

var runScripts = function runScripts() {
  var scripts = [];
  var types = ["text/ecmascript-6", "text/6to5", "text/babel", "module"];
  var index = 0;

  var exec = function exec() {
    var param = scripts[index];
    if (param instanceof Array) {
      transform.run.apply(transform, param);
      index++;
      exec();
    }
  };

  var run = function run(script, i) {
    var opts = {};

    if (script.src) {
      transform.load(script.src, function (param) {
        scripts[i] = param;
        exec();
      }, opts, true);
    } else {
      opts.filename = "embedded";
      scripts[i] = [script.innerHTML, opts];
    }
  };

  var _scripts = global.document.getElementsByTagName("script");

  for (var i = 0; i < _scripts.length; ++i) {
    var _script = _scripts[i];
    if (types.indexOf(_script.type) >= 0) scripts.push(_script);
  }

  for (i in scripts) {
    run(scripts[i], i);
  }

  exec();
};

if (global.addEventListener) {
  global.addEventListener("DOMContentLoaded", runScripts, false);
} else if (global.attachEvent) {
  global.attachEvent("onload", runScripts);
}
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../../../package":497,"../transformation":71,"../transformation/file/options":55,"./node":20}],20:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.register = register;
exports.polyfill = polyfill;
exports.transformFile = transformFile;
exports.transformFileSync = transformFileSync;
exports.parse = parse;

function _interopRequire(obj) { return obj && obj.__esModule ? obj["default"] : obj; }

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _lodashLangIsFunction = require("lodash/lang/isFunction");

var _lodashLangIsFunction2 = _interopRequireDefault(_lodashLangIsFunction);

var _transformation = require("../transformation");

var _transformation2 = _interopRequireDefault(_transformation);

var _acorn = require("../../acorn");

var acorn = _interopRequireWildcard(_acorn);

var _util = require("../util");

var util = _interopRequireWildcard(_util);

var _fs = require("fs");

var _fs2 = _interopRequireDefault(_fs);

var _types = require("../types");

var t = _interopRequireWildcard(_types);

exports.util = util;
exports.acorn = acorn;
exports.transform = _transformation2["default"];
exports.pipeline = _transformation.pipeline;
exports.canCompile = _util.canCompile;

var _transformationFileOptions = require("../transformation/file/options");

exports.options = _interopRequire(_transformationFileOptions);

var _transformationTransformer = require("../transformation/transformer");

exports.Transformer = _interopRequire(_transformationTransformer);

var _transformationTransformerPipeline = require("../transformation/transformer-pipeline");

exports.TransformerPipeline = _interopRequire(_transformationTransformerPipeline);

var _traversal = require("../traversal");

exports.traverse = _interopRequire(_traversal);

var _toolsBuildExternalHelpers = require("../tools/build-external-helpers");

exports.buildExternalHelpers = _interopRequire(_toolsBuildExternalHelpers);

var _package = require("../../../package");

exports.version = _package.version;
exports.types = t;

function register(opts) {
  var callback = require("./register/node-polyfill");
  if (opts != null) callback(opts);
  return callback;
}

function polyfill() {
  require("../polyfill");
}

function transformFile(filename, opts, callback) {
  if ((0, _lodashLangIsFunction2["default"])(opts)) {
    callback = opts;
    opts = {};
  }

  opts.filename = filename;

  _fs2["default"].readFile(filename, function (err, code) {
    if (err) return callback(err);

    var result;

    try {
      result = (0, _transformation2["default"])(code, opts);
    } catch (err) {
      return callback(err);
    }

    callback(null, result);
  });
}

function transformFileSync(filename) {
  var opts = arguments[1] === undefined ? {} : arguments[1];

  opts.filename = filename;
  return (0, _transformation2["default"])(_fs2["default"].readFileSync(filename, "utf8"), opts);
}

function parse(code) {
  var opts = arguments[1] === undefined ? {} : arguments[1];

  opts.allowHashBang = true;
  opts.sourceType = "module";
  opts.ecmaVersion = Infinity;
  opts.plugins = {
    flow: true,
    jsx: true
  };
  opts.features = {};

  for (var key in _transformation2["default"].pipeline.transformers) {
    opts.features[key] = true;
  }

  return acorn.parse(code, opts);
}
},{"../../../package":497,"../../acorn":1,"../polyfill":49,"../tools/build-external-helpers":50,"../transformation":71,"../transformation/file/options":55,"../transformation/transformer":85,"../transformation/transformer-pipeline":84,"../traversal":157,"../types":169,"../util":173,"./register/node-polyfill":22,"fs":189,"lodash/lang/isFunction":408}],21:[function(require,module,exports){
"use strict";

exports.__esModule = true;

require("../../polyfill");

// required to safely use babel/register within a browserify codebase

exports["default"] = function () {};

;

module.exports = exports["default"];
},{"../../polyfill":49}],22:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequire(obj) { return obj && obj.__esModule ? obj["default"] : obj; }

require("../../polyfill");

var _node = require("./node");

exports["default"] = _interopRequire(_node);
module.exports = exports["default"];
},{"../../polyfill":49,"./node":21}],23:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var _repeating = require("repeating");

var _repeating2 = _interopRequireDefault(_repeating);

var _trimRight = require("trim-right");

var _trimRight2 = _interopRequireDefault(_trimRight);

var _lodashLangIsBoolean = require("lodash/lang/isBoolean");

var _lodashLangIsBoolean2 = _interopRequireDefault(_lodashLangIsBoolean);

var _lodashCollectionIncludes = require("lodash/collection/includes");

var _lodashCollectionIncludes2 = _interopRequireDefault(_lodashCollectionIncludes);

var _lodashLangIsNumber = require("lodash/lang/isNumber");

var _lodashLangIsNumber2 = _interopRequireDefault(_lodashLangIsNumber);

var Buffer = (function () {
  function Buffer(position, format) {
    _classCallCheck(this, Buffer);

    this.position = position;
    this._indent = format.indent.base;
    this.format = format;
    this.buf = "";
  }

  Buffer.prototype.get = function get() {
    return (0, _trimRight2["default"])(this.buf);
  };

  Buffer.prototype.getIndent = function getIndent() {
    if (this.format.compact || this.format.concise) {
      return "";
    } else {
      return (0, _repeating2["default"])(this.format.indent.style, this._indent);
    }
  };

  Buffer.prototype.indentSize = function indentSize() {
    return this.getIndent().length;
  };

  Buffer.prototype.indent = function indent() {
    this._indent++;
  };

  Buffer.prototype.dedent = function dedent() {
    this._indent--;
  };

  Buffer.prototype.semicolon = function semicolon() {
    this.push(";");
  };

  Buffer.prototype.ensureSemicolon = function ensureSemicolon() {
    if (!this.isLast(";")) this.semicolon();
  };

  Buffer.prototype.rightBrace = function rightBrace() {
    this.newline(true);
    this.push("}");
  };

  Buffer.prototype.keyword = function keyword(name) {
    this.push(name);
    this.space();
  };

  Buffer.prototype.space = function space() {
    if (this.format.compact) return;
    if (this.buf && !this.isLast(" ") && !this.isLast("\n")) {
      this.push(" ");
    }
  };

  Buffer.prototype.removeLast = function removeLast(cha) {
    if (this.format.compact) return;
    if (!this.isLast(cha)) return;

    this.buf = this.buf.substr(0, this.buf.length - 1);
    this.position.unshift(cha);
  };

  Buffer.prototype.newline = function newline(i, removeLast) {
    if (this.format.compact || this.format.retainLines) return;

    if (this.format.concise) {
      this.space();
      return;
    }

    removeLast = removeLast || false;

    if ((0, _lodashLangIsNumber2["default"])(i)) {
      i = Math.min(2, i);

      if (this.endsWith("{\n") || this.endsWith(":\n")) i--;
      if (i <= 0) return;

      while (i > 0) {
        this._newline(removeLast);
        i--;
      }
      return;
    }

    if ((0, _lodashLangIsBoolean2["default"])(i)) {
      removeLast = i;
    }

    this._newline(removeLast);
  };

  Buffer.prototype._newline = function _newline(removeLast) {
    // never allow more than two lines
    if (this.endsWith("\n\n")) return;

    // remove the last newline
    if (removeLast && this.isLast("\n")) this.removeLast("\n");

    this.removeLast(" ");
    this._removeSpacesAfterLastNewline();
    this._push("\n");
  };

  /**
   * If buffer ends with a newline and some spaces after it, trim those spaces.
   */

  Buffer.prototype._removeSpacesAfterLastNewline = function _removeSpacesAfterLastNewline() {
    var lastNewlineIndex = this.buf.lastIndexOf("\n");
    if (lastNewlineIndex === -1) {
      return;
    }

    var index = this.buf.length - 1;
    while (index > lastNewlineIndex) {
      if (this.buf[index] !== " ") {
        break;
      }

      index--;
    }

    if (index === lastNewlineIndex) {
      this.buf = this.buf.substring(0, index + 1);
    }
  };

  Buffer.prototype.push = function push(str, noIndent) {
    if (!this.format.compact && this._indent && !noIndent && str !== "\n") {
      // we have an indent level and we aren't pushing a newline
      var indent = this.getIndent();

      // replace all newlines with newlines with the indentation
      str = str.replace(/\n/g, "\n" + indent);

      // we've got a newline before us so prepend on the indentation
      if (this.isLast("\n")) this._push(indent);
    }

    this._push(str);
  };

  Buffer.prototype._push = function _push(str) {
    this.position.push(str);
    this.buf += str;
  };

  Buffer.prototype.endsWith = function endsWith(str) {
    return this.buf.slice(-str.length) === str;
  };

  Buffer.prototype.isLast = function isLast(cha) {
    if (this.format.compact) return false;

    var buf = this.buf;
    var last = buf[buf.length - 1];

    if (Array.isArray(cha)) {
      return (0, _lodashCollectionIncludes2["default"])(cha, last);
    } else {
      return cha === last;
    }
  };

  return Buffer;
})();

exports["default"] = Buffer;
module.exports = exports["default"];
},{"lodash/collection/includes":332,"lodash/lang/isBoolean":406,"lodash/lang/isNumber":410,"repeating":479,"trim-right":496}],24:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.File = File;
exports.Program = Program;
exports.BlockStatement = BlockStatement;

function File(node, print) {
  print(node.program);
}

function Program(node, print) {
  print.sequence(node.body);
}

function BlockStatement(node, print) {
  if (node.body.length === 0) {
    this.push("{}");
  } else {
    this.push("{");
    this.newline();
    print.sequence(node.body, { indent: true });
    if (!this.format.retainLines) this.removeLast("\n");
    this.rightBrace();
  }
}
},{}],25:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.ClassDeclaration = ClassDeclaration;
exports.ClassBody = ClassBody;
exports.ClassProperty = ClassProperty;
exports.MethodDefinition = MethodDefinition;

function ClassDeclaration(node, print) {
  print.list(node.decorators);
  this.push("class");

  if (node.id) {
    this.space();
    print(node.id);
  }

  print(node.typeParameters);

  if (node.superClass) {
    this.push(" extends ");
    print(node.superClass);
    print(node.superTypeParameters);
  }

  if (node["implements"]) {
    this.push(" implements ");
    print.join(node["implements"], { separator: ", " });
  }

  this.space();
  print(node.body);
}

exports.ClassExpression = ClassDeclaration;

function ClassBody(node, print) {
  if (node.body.length === 0) {
    this.push("{}");
  } else {
    this.push("{");
    this.newline();

    this.indent();
    print.sequence(node.body);
    this.dedent();

    this.rightBrace();
  }
}

function ClassProperty(node, print) {
  print.list(node.decorators);

  if (node["static"]) this.push("static ");
  print(node.key);
  print(node.typeAnnotation);
  if (node.value) {
    this.space();
    this.push("=");
    this.space();
    print(node.value);
  }
  this.semicolon();
}

function MethodDefinition(node, print) {
  print.list(node.decorators);

  if (node["static"]) {
    this.push("static ");
  }

  this._method(node, print);
}
},{}],26:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.ComprehensionBlock = ComprehensionBlock;
exports.ComprehensionExpression = ComprehensionExpression;

function ComprehensionBlock(node, print) {
  this.keyword("for");
  this.push("(");
  print(node.left);
  this.push(" of ");
  print(node.right);
  this.push(")");
}

function ComprehensionExpression(node, print) {
  this.push(node.generator ? "(" : "[");

  print.join(node.blocks, { separator: " " });
  this.space();

  if (node.filter) {
    this.keyword("if");
    this.push("(");
    print(node.filter);
    this.push(")");
    this.space();
  }

  print(node.body);

  this.push(node.generator ? ")" : "]");
}
},{}],27:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.UnaryExpression = UnaryExpression;
exports.DoExpression = DoExpression;
exports.UpdateExpression = UpdateExpression;
exports.ConditionalExpression = ConditionalExpression;
exports.NewExpression = NewExpression;
exports.SequenceExpression = SequenceExpression;
exports.ThisExpression = ThisExpression;
exports.Super = Super;
exports.Decorator = Decorator;
exports.CallExpression = CallExpression;
exports.EmptyStatement = EmptyStatement;
exports.ExpressionStatement = ExpressionStatement;
exports.AssignmentExpression = AssignmentExpression;
exports.BindExpression = BindExpression;
exports.MemberExpression = MemberExpression;
exports.MetaProperty = MetaProperty;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _isInteger = require("is-integer");

var _isInteger2 = _interopRequireDefault(_isInteger);

var _lodashLangIsNumber = require("lodash/lang/isNumber");

var _lodashLangIsNumber2 = _interopRequireDefault(_lodashLangIsNumber);

var _types = require("../../types");

var t = _interopRequireWildcard(_types);

function UnaryExpression(node, print) {
  var hasSpace = /[a-z]$/.test(node.operator);
  var arg = node.argument;

  if (t.isUpdateExpression(arg) || t.isUnaryExpression(arg)) {
    hasSpace = true;
  }

  if (t.isUnaryExpression(arg) && arg.operator === "!") {
    hasSpace = false;
  }

  this.push(node.operator);
  if (hasSpace) this.push(" ");
  print(node.argument);
}

function DoExpression(node, print) {
  this.push("do");
  this.space();
  print(node.body);
}

function UpdateExpression(node, print) {
  if (node.prefix) {
    this.push(node.operator);
    print(node.argument);
  } else {
    print(node.argument);
    this.push(node.operator);
  }
}

function ConditionalExpression(node, print) {
  print(node.test);
  this.space();
  this.push("?");
  this.space();
  print(node.consequent);
  this.space();
  this.push(":");
  this.space();
  print(node.alternate);
}

function NewExpression(node, print) {
  this.push("new ");
  print(node.callee);
  this.push("(");
  print.list(node.arguments);
  this.push(")");
}

function SequenceExpression(node, print) {
  print.list(node.expressions);
}

function ThisExpression() {
  this.push("this");
}

function Super() {
  this.push("super");
}

function Decorator(node, print) {
  this.push("@");
  print(node.expression);
}

function CallExpression(node, print) {
  print(node.callee);

  this.push("(");

  var separator = ",";

  if (node._prettyCall) {
    separator += "\n";
    this.newline();
    this.indent();
  } else {
    separator += " ";
  }

  print.list(node.arguments, { separator: separator });

  if (node._prettyCall) {
    this.newline();
    this.dedent();
  }

  this.push(")");
}

var buildYieldAwait = function buildYieldAwait(keyword) {
  return function (node, print) {
    this.push(keyword);

    if (node.delegate || node.all) {
      this.push("*");
    }

    if (node.argument) {
      this.space();
      print(node.argument);
    }
  };
};

var YieldExpression = buildYieldAwait("yield");
exports.YieldExpression = YieldExpression;
var AwaitExpression = buildYieldAwait("await");

exports.AwaitExpression = AwaitExpression;

function EmptyStatement() {
  this.semicolon();
}

function ExpressionStatement(node, print) {
  print(node.expression);
  this.semicolon();
}

function AssignmentExpression(node, print) {
  // todo: add cases where the spaces can be dropped when in compact mode
  print(node.left);
  this.push(" ");
  this.push(node.operator);
  this.push(" ");
  print(node.right);
}

function BindExpression(node, print) {
  print(node.object);
  this.push("::");
  print(node.callee);
}

exports.BinaryExpression = AssignmentExpression;
exports.LogicalExpression = AssignmentExpression;
exports.AssignmentPattern = AssignmentExpression;

var SCIENTIFIC_NOTATION = /e/i;

function MemberExpression(node, print) {
  var obj = node.object;
  print(obj);

  if (!node.computed && t.isMemberExpression(node.property)) {
    throw new TypeError("Got a MemberExpression for MemberExpression property");
  }

  var computed = node.computed;
  if (t.isLiteral(node.property) && (0, _lodashLangIsNumber2["default"])(node.property.value)) {
    computed = true;
  }

  if (computed) {
    this.push("[");
    print(node.property);
    this.push("]");
  } else {
    // 5..toFixed(2);
    if (t.isLiteral(obj) && (0, _isInteger2["default"])(obj.value) && !SCIENTIFIC_NOTATION.test(obj.value.toString())) {
      this.push(".");
    }

    this.push(".");
    print(node.property);
  }
}

function MetaProperty(node, print) {
  print(node.meta);
  this.push(".");
  print(node.property);
}
},{"../../types":169,"is-integer":317,"lodash/lang/isNumber":410}],28:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.AnyTypeAnnotation = AnyTypeAnnotation;
exports.ArrayTypeAnnotation = ArrayTypeAnnotation;
exports.BooleanTypeAnnotation = BooleanTypeAnnotation;
exports.DeclareClass = DeclareClass;
exports.DeclareFunction = DeclareFunction;
exports.DeclareModule = DeclareModule;
exports.DeclareVariable = DeclareVariable;
exports.FunctionTypeAnnotation = FunctionTypeAnnotation;
exports.FunctionTypeParam = FunctionTypeParam;
exports.InterfaceExtends = InterfaceExtends;
exports._interfaceish = _interfaceish;
exports.InterfaceDeclaration = InterfaceDeclaration;
exports.IntersectionTypeAnnotation = IntersectionTypeAnnotation;
exports.NullableTypeAnnotation = NullableTypeAnnotation;
exports.NumberTypeAnnotation = NumberTypeAnnotation;
exports.StringLiteralTypeAnnotation = StringLiteralTypeAnnotation;
exports.StringTypeAnnotation = StringTypeAnnotation;
exports.TupleTypeAnnotation = TupleTypeAnnotation;
exports.TypeofTypeAnnotation = TypeofTypeAnnotation;
exports.TypeAlias = TypeAlias;
exports.TypeAnnotation = TypeAnnotation;
exports.TypeParameterInstantiation = TypeParameterInstantiation;
exports.ObjectTypeAnnotation = ObjectTypeAnnotation;
exports.ObjectTypeCallProperty = ObjectTypeCallProperty;
exports.ObjectTypeIndexer = ObjectTypeIndexer;
exports.ObjectTypeProperty = ObjectTypeProperty;
exports.QualifiedTypeIdentifier = QualifiedTypeIdentifier;
exports.UnionTypeAnnotation = UnionTypeAnnotation;
exports.TypeCastExpression = TypeCastExpression;
exports.VoidTypeAnnotation = VoidTypeAnnotation;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _types = require("../../types");

var t = _interopRequireWildcard(_types);

function AnyTypeAnnotation() {
  this.push("any");
}

function ArrayTypeAnnotation(node, print) {
  print(node.elementType);
  this.push("[");
  this.push("]");
}

function BooleanTypeAnnotation(node) {
  this.push("bool");
}

function DeclareClass(node, print) {
  this.push("declare class ");
  this._interfaceish(node, print);
}

function DeclareFunction(node, print) {
  this.push("declare function ");
  print(node.id);
  print(node.id.typeAnnotation.typeAnnotation);
  this.semicolon();
}

function DeclareModule(node, print) {
  this.push("declare module ");
  print(node.id);
  this.space();
  print(node.body);
}

function DeclareVariable(node, print) {
  this.push("declare var ");
  print(node.id);
  print(node.id.typeAnnotation);
  this.semicolon();
}

function FunctionTypeAnnotation(node, print, parent) {
  print(node.typeParameters);
  this.push("(");
  print.list(node.params);

  if (node.rest) {
    if (node.params.length) {
      this.push(",");
      this.space();
    }
    this.push("...");
    print(node.rest);
  }

  this.push(")");

  // this node type is overloaded, not sure why but it makes it EXTREMELY annoying
  if (parent.type === "ObjectTypeProperty" || parent.type === "ObjectTypeCallProperty" || parent.type === "DeclareFunction") {
    this.push(":");
  } else {
    this.space();
    this.push("=>");
  }

  this.space();
  print(node.returnType);
}

function FunctionTypeParam(node, print) {
  print(node.name);
  if (node.optional) this.push("?");
  this.push(":");
  this.space();
  print(node.typeAnnotation);
}

function InterfaceExtends(node, print) {
  print(node.id);
  print(node.typeParameters);
}

exports.ClassImplements = InterfaceExtends;
exports.GenericTypeAnnotation = InterfaceExtends;

function _interfaceish(node, print) {
  print(node.id);
  print(node.typeParameters);
  if (node["extends"].length) {
    this.push(" extends ");
    print.join(node["extends"], { separator: ", " });
  }
  this.space();
  print(node.body);
}

function InterfaceDeclaration(node, print) {
  this.push("interface ");
  this._interfaceish(node, print);
}

function IntersectionTypeAnnotation(node, print) {
  print.join(node.types, { separator: " & " });
}

function NullableTypeAnnotation(node, print) {
  this.push("?");
  print(node.typeAnnotation);
}

function NumberTypeAnnotation() {
  this.push("number");
}

function StringLiteralTypeAnnotation(node) {
  this._stringLiteral(node.value);
}

function StringTypeAnnotation() {
  this.push("string");
}

function TupleTypeAnnotation(node, print) {
  this.push("[");
  print.join(node.types, { separator: ", " });
  this.push("]");
}

function TypeofTypeAnnotation(node, print) {
  this.push("typeof ");
  print(node.argument);
}

function TypeAlias(node, print) {
  this.push("type ");
  print(node.id);
  print(node.typeParameters);
  this.space();
  this.push("=");
  this.space();
  print(node.right);
  this.semicolon();
}

function TypeAnnotation(node, print) {
  this.push(":");
  this.space();
  if (node.optional) this.push("?");
  print(node.typeAnnotation);
}

function TypeParameterInstantiation(node, print) {
  this.push("<");
  print.join(node.params, { separator: ", " });
  this.push(">");
}

exports.TypeParameterDeclaration = TypeParameterInstantiation;

function ObjectTypeAnnotation(node, print) {
  var _this = this;

  this.push("{");
  var props = node.properties.concat(node.callProperties, node.indexers);

  if (props.length) {
    this.space();

    print.list(props, {
      separator: false,
      indent: true,
      iterator: function iterator() {
        if (props.length !== 1) {
          _this.semicolon();
          _this.space();
        }
      }
    });

    this.space();
  }

  this.push("}");
}

function ObjectTypeCallProperty(node, print) {
  if (node["static"]) this.push("static ");
  print(node.value);
}

function ObjectTypeIndexer(node, print) {
  if (node["static"]) this.push("static ");
  this.push("[");
  print(node.id);
  this.push(":");
  this.space();
  print(node.key);
  this.push("]");
  this.push(":");
  this.space();
  print(node.value);
}

function ObjectTypeProperty(node, print) {
  if (node["static"]) this.push("static ");
  print(node.key);
  if (node.optional) this.push("?");
  if (!t.isFunctionTypeAnnotation(node.value)) {
    this.push(":");
    this.space();
  }
  print(node.value);
}

function QualifiedTypeIdentifier(node, print) {
  print(node.qualification);
  this.push(".");
  print(node.id);
}

function UnionTypeAnnotation(node, print) {
  print.join(node.types, { separator: " | " });
}

function TypeCastExpression(node, print) {
  this.push("(");
  print(node.expression);
  print(node.typeAnnotation);
  this.push(")");
}

function VoidTypeAnnotation(node) {
  this.push("void");
}
},{"../../types":169}],29:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.JSXAttribute = JSXAttribute;
exports.JSXIdentifier = JSXIdentifier;
exports.JSXNamespacedName = JSXNamespacedName;
exports.JSXMemberExpression = JSXMemberExpression;
exports.JSXSpreadAttribute = JSXSpreadAttribute;
exports.JSXExpressionContainer = JSXExpressionContainer;
exports.JSXElement = JSXElement;
exports.JSXOpeningElement = JSXOpeningElement;
exports.JSXClosingElement = JSXClosingElement;
exports.JSXEmptyExpression = JSXEmptyExpression;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _lodashCollectionEach = require("lodash/collection/each");

var _lodashCollectionEach2 = _interopRequireDefault(_lodashCollectionEach);

var _types = require("../../types");

var t = _interopRequireWildcard(_types);

function JSXAttribute(node, print) {
  print(node.name);
  if (node.value) {
    this.push("=");
    print(node.value);
  }
}

function JSXIdentifier(node) {
  this.push(node.name);
}

function JSXNamespacedName(node, print) {
  print(node.namespace);
  this.push(":");
  print(node.name);
}

function JSXMemberExpression(node, print) {
  print(node.object);
  this.push(".");
  print(node.property);
}

function JSXSpreadAttribute(node, print) {
  this.push("{...");
  print(node.argument);
  this.push("}");
}

function JSXExpressionContainer(node, print) {
  this.push("{");
  print(node.expression);
  this.push("}");
}

function JSXElement(node, print) {
  var open = node.openingElement;
  print(open);
  if (open.selfClosing) return;

  this.indent();
  var _arr = node.children;
  for (var _i = 0; _i < _arr.length; _i++) {
    var child = _arr[_i];
    if (t.isLiteral(child)) {
      this.push(child.value, true);
    } else {
      print(child);
    }
  }
  this.dedent();

  print(node.closingElement);
}

function JSXOpeningElement(node, print) {
  this.push("<");
  print(node.name);
  if (node.attributes.length > 0) {
    this.push(" ");
    print.join(node.attributes, { separator: " " });
  }
  this.push(node.selfClosing ? " />" : ">");
}

function JSXClosingElement(node, print) {
  this.push("</");
  print(node.name);
  this.push(">");
}

function JSXEmptyExpression() {}
},{"../../types":169,"lodash/collection/each":330}],30:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports._params = _params;
exports._method = _method;
exports.FunctionExpression = FunctionExpression;
exports.ArrowFunctionExpression = ArrowFunctionExpression;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _types = require("../../types");

var t = _interopRequireWildcard(_types);

function _params(node, print) {
  var _this = this;

  print(node.typeParameters);
  this.push("(");
  print.list(node.params, {
    iterator: function iterator(node) {
      if (node.optional) _this.push("?");
      print(node.typeAnnotation);
    }
  });
  this.push(")");

  if (node.returnType) {
    print(node.returnType);
  }
}

function _method(node, print) {
  var value = node.value;
  var kind = node.kind;
  var key = node.key;

  if (kind === "method" || kind === "init") {
    if (value.generator) {
      this.push("*");
    }
  }

  if (kind === "get" || kind === "set") {
    this.push(kind + " ");
  }

  if (value.async) this.push("async ");

  if (node.computed) {
    this.push("[");
    print(key);
    this.push("]");
  } else {
    print(key);
  }

  this._params(value, print);
  this.push(" ");
  print(value.body);
}

function FunctionExpression(node, print) {
  if (node.async) this.push("async ");
  this.push("function");
  if (node.generator) this.push("*");

  if (node.id) {
    this.push(" ");
    print(node.id);
  } else {
    this.space();
  }

  this._params(node, print);
  this.space();
  print(node.body);
}

exports.FunctionDeclaration = FunctionExpression;

function ArrowFunctionExpression(node, print) {
  if (node.async) this.push("async ");

  if (node.params.length === 1 && t.isIdentifier(node.params[0])) {
    print(node.params[0]);
  } else {
    this._params(node, print);
  }

  this.push(" => ");

  var bodyNeedsParens = t.isObjectExpression(node.body);

  if (bodyNeedsParens) {
    this.push("(");
  }

  print(node.body);

  if (bodyNeedsParens) {
    this.push(")");
  }
}
},{"../../types":169}],31:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.ImportSpecifier = ImportSpecifier;
exports.ImportDefaultSpecifier = ImportDefaultSpecifier;
exports.ExportDefaultSpecifier = ExportDefaultSpecifier;
exports.ExportSpecifier = ExportSpecifier;
exports.ExportNamespaceSpecifier = ExportNamespaceSpecifier;
exports.ExportAllDeclaration = ExportAllDeclaration;
exports.ExportNamedDeclaration = ExportNamedDeclaration;
exports.ExportDefaultDeclaration = ExportDefaultDeclaration;
exports.ImportDeclaration = ImportDeclaration;
exports.ImportNamespaceSpecifier = ImportNamespaceSpecifier;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _lodashCollectionEach = require("lodash/collection/each");

var _lodashCollectionEach2 = _interopRequireDefault(_lodashCollectionEach);

var _types = require("../../types");

var t = _interopRequireWildcard(_types);

function ImportSpecifier(node, print) {
  print(node.imported);
  if (node.local && node.local.name !== node.imported.name) {
    this.push(" as ");
    print(node.local);
  }
}

function ImportDefaultSpecifier(node, print) {
  print(node.local);
}

function ExportDefaultSpecifier(node, print) {
  print(node.exported);
}

function ExportSpecifier(node, print) {
  print(node.local);
  if (node.exported && node.local.name !== node.exported.name) {
    this.push(" as ");
    print(node.exported);
  }
}

function ExportNamespaceSpecifier(node, print) {
  this.push("* as ");
  print(node.exported);
}

function ExportAllDeclaration(node, print) {
  this.push("export *");
  if (node.exported) {
    this.push(" as ");
    print(node.exported);
  }
  this.push(" from ");
  print(node.source);
  this.semicolon();
}

function ExportNamedDeclaration(node, print) {
  this.push("export ");
  ExportDeclaration.call(this, node, print);
}

function ExportDefaultDeclaration(node, print) {
  this.push("export default ");
  ExportDeclaration.call(this, node, print);
}

function ExportDeclaration(node, print) {
  var specifiers = node.specifiers;

  if (node.declaration) {
    var declar = node.declaration;
    print(declar);
    if (t.isStatement(declar) || t.isFunction(declar) || t.isClass(declar)) return;
  } else {
    var first = specifiers[0];
    var hasSpecial = false;
    if (t.isExportDefaultSpecifier(first) || t.isExportNamespaceSpecifier(first)) {
      hasSpecial = true;
      print(specifiers.shift());
      if (specifiers.length) {
        this.push(", ");
      }
    }

    if (specifiers.length || !specifiers.length && !hasSpecial) {
      this.push("{");
      if (specifiers.length) {
        this.space();
        print.join(specifiers, { separator: ", " });
        this.space();
      }
      this.push("}");
    }

    if (node.source) {
      this.push(" from ");
      print(node.source);
    }
  }

  this.ensureSemicolon();
}

function ImportDeclaration(node, print) {
  this.push("import ");

  if (node.isType) {
    this.push("type ");
  }

  var specfiers = node.specifiers;
  if (specfiers && specfiers.length) {
    var first = node.specifiers[0];
    if (t.isImportDefaultSpecifier(first) || t.isImportNamespaceSpecifier(first)) {
      print(node.specifiers.shift());
      if (node.specifiers.length) {
        this.push(", ");
      }
    }

    if (node.specifiers.length) {
      this.push("{");
      this.space();
      print.join(node.specifiers, { separator: ", " });
      this.space();
      this.push("}");
    }

    this.push(" from ");
  }

  print(node.source);
  this.semicolon();
}

function ImportNamespaceSpecifier(node, print) {
  this.push("* as ");
  print(node.local);
}
},{"../../types":169,"lodash/collection/each":330}],32:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.WithStatement = WithStatement;
exports.IfStatement = IfStatement;
exports.ForStatement = ForStatement;
exports.WhileStatement = WhileStatement;
exports.DoWhileStatement = DoWhileStatement;
exports.LabeledStatement = LabeledStatement;
exports.TryStatement = TryStatement;
exports.CatchClause = CatchClause;
exports.ThrowStatement = ThrowStatement;
exports.SwitchStatement = SwitchStatement;
exports.SwitchCase = SwitchCase;
exports.DebuggerStatement = DebuggerStatement;
exports.VariableDeclaration = VariableDeclaration;
exports.VariableDeclarator = VariableDeclarator;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _repeating = require("repeating");

var _repeating2 = _interopRequireDefault(_repeating);

var _types = require("../../types");

var t = _interopRequireWildcard(_types);

function WithStatement(node, print) {
  this.keyword("with");
  this.push("(");
  print(node.object);
  this.push(")");
  print.block(node.body);
}

function IfStatement(node, print) {
  this.keyword("if");
  this.push("(");
  print(node.test);
  this.push(")");
  this.space();

  print.indentOnComments(node.consequent);

  if (node.alternate) {
    if (this.isLast("}")) this.space();
    this.push("else ");
    print.indentOnComments(node.alternate);
  }
}

function ForStatement(node, print) {
  this.keyword("for");
  this.push("(");

  print(node.init);
  this.push(";");

  if (node.test) {
    this.push(" ");
    print(node.test);
  }
  this.push(";");

  if (node.update) {
    this.push(" ");
    print(node.update);
  }

  this.push(")");
  print.block(node.body);
}

function WhileStatement(node, print) {
  this.keyword("while");
  this.push("(");
  print(node.test);
  this.push(")");
  print.block(node.body);
}

var buildForXStatement = function buildForXStatement(op) {
  return function (node, print) {
    this.keyword("for");
    this.push("(");
    print(node.left);
    this.push(" " + op + " ");
    print(node.right);
    this.push(")");
    print.block(node.body);
  };
};

var ForInStatement = buildForXStatement("in");
exports.ForInStatement = ForInStatement;
var ForOfStatement = buildForXStatement("of");

exports.ForOfStatement = ForOfStatement;

function DoWhileStatement(node, print) {
  this.push("do ");
  print(node.body);
  this.space();
  this.keyword("while");
  this.push("(");
  print(node.test);
  this.push(");");
}

var buildLabelStatement = function buildLabelStatement(prefix, key) {
  return function (node, print) {
    this.push(prefix);

    var label = node[key || "label"];
    if (label) {
      this.push(" ");
      print(label);
    }

    this.semicolon();
  };
};

var ContinueStatement = buildLabelStatement("continue");
exports.ContinueStatement = ContinueStatement;
var ReturnStatement = buildLabelStatement("return", "argument");
exports.ReturnStatement = ReturnStatement;
var BreakStatement = buildLabelStatement("break");

exports.BreakStatement = BreakStatement;

function LabeledStatement(node, print) {
  print(node.label);
  this.push(": ");
  print(node.body);
}

function TryStatement(node, print) {
  this.keyword("try");
  print(node.block);
  this.space();

  // Esprima bug puts the catch clause in a `handlers` array.
  // see https://code.google.com/p/esprima/issues/detail?id=433
  // We run into this from regenerator generated ast.
  if (node.handlers) {
    print(node.handlers[0]);
  } else {
    print(node.handler);
  }

  if (node.finalizer) {
    this.space();
    this.push("finally ");
    print(node.finalizer);
  }
}

function CatchClause(node, print) {
  this.keyword("catch");
  this.push("(");
  print(node.param);
  this.push(") ");
  print(node.body);
}

function ThrowStatement(node, print) {
  this.push("throw ");
  print(node.argument);
  this.semicolon();
}

function SwitchStatement(node, print) {
  this.keyword("switch");
  this.push("(");
  print(node.discriminant);
  this.push(")");
  this.space();
  this.push("{");

  print.sequence(node.cases, {
    indent: true,
    addNewlines: function addNewlines(leading, cas) {
      if (!leading && node.cases[node.cases.length - 1] === cas) return -1;
    }
  });

  this.push("}");
}

function SwitchCase(node, print) {
  if (node.test) {
    this.push("case ");
    print(node.test);
    this.push(":");
  } else {
    this.push("default:");
  }

  if (node.consequent.length) {
    this.newline();
    print.sequence(node.consequent, { indent: true });
  }
}

function DebuggerStatement() {
  this.push("debugger;");
}

function VariableDeclaration(node, print, parent) {
  this.push(node.kind + " ");

  var hasInits = false;
  // don't add whitespace to loop heads
  if (!t.isFor(parent)) {
    var _arr = node.declarations;

    for (var _i = 0; _i < _arr.length; _i++) {
      var declar = _arr[_i];
      if (declar.init) {
        // has an init so let's split it up over multiple lines
        hasInits = true;
      }
    }
  }

  var sep = ",";
  if (!this.format.compact && !this.format.concise && hasInits && !this.format.retainLines) {
    sep += "\n" + (0, _repeating2["default"])(" ", node.kind.length + 1);
  } else {
    sep += " ";
  }

  print.list(node.declarations, { separator: sep });

  if (t.isFor(parent)) {
    if (parent.left === node || parent.init === node) return;
  }

  this.semicolon();
}

function VariableDeclarator(node, print) {
  print(node.id);
  print(node.id.typeAnnotation);
  if (node.init) {
    this.space();
    this.push("=");
    this.space();
    print(node.init);
  }
}
},{"../../types":169,"repeating":479}],33:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.TaggedTemplateExpression = TaggedTemplateExpression;
exports.TemplateElement = TemplateElement;
exports.TemplateLiteral = TemplateLiteral;

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _lodashCollectionEach = require("lodash/collection/each");

var _lodashCollectionEach2 = _interopRequireDefault(_lodashCollectionEach);

function TaggedTemplateExpression(node, print) {
  print(node.tag);
  print(node.quasi);
}

function TemplateElement(node) {
  this._push(node.value.raw);
}

function TemplateLiteral(node, print) {
  this.push("`");

  var quasis = node.quasis;
  var len = quasis.length;

  for (var i = 0; i < len; i++) {
    print(quasis[i]);

    if (i + 1 < len) {
      this.push("${ ");
      print(node.expressions[i]);
      this.push(" }");
    }
  }

  this._push("`");
}
},{"lodash/collection/each":330}],34:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.Identifier = Identifier;
exports.RestElement = RestElement;
exports.ObjectExpression = ObjectExpression;
exports.Property = Property;
exports.ArrayExpression = ArrayExpression;
exports.Literal = Literal;
exports._stringLiteral = _stringLiteral;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _lodashCollectionEach = require("lodash/collection/each");

var _lodashCollectionEach2 = _interopRequireDefault(_lodashCollectionEach);

var _types = require("../../types");

var t = _interopRequireWildcard(_types);

function Identifier(node) {
  this.push(node.name);
}

function RestElement(node, print) {
  this.push("...");
  print(node.argument);
}

exports.SpreadElement = RestElement;
exports.SpreadProperty = RestElement;

function ObjectExpression(node, print) {
  var props = node.properties;

  if (props.length) {
    this.push("{");
    this.space();

    print.list(props, { indent: true });

    this.space();
    this.push("}");
  } else {
    this.push("{}");
  }
}

exports.ObjectPattern = ObjectExpression;

function Property(node, print) {
  if (node.method || node.kind === "get" || node.kind === "set") {
    this._method(node, print);
  } else {
    if (node.computed) {
      this.push("[");
      print(node.key);
      this.push("]");
    } else {
      print(node.key);

      // shorthand!
      if (node.shorthand && (t.isIdentifier(node.key) && t.isIdentifier(node.value) && node.key.name === node.value.name)) {
        return;
      }
    }

    this.push(":");
    this.space();
    print(node.value);
  }
}

function ArrayExpression(node, print) {
  var elems = node.elements;
  var len = elems.length;

  this.push("[");

  for (var i = 0; i < elems.length; i++) {
    var elem = elems[i];
    if (!elem) {
      // If the array expression ends with a hole, that hole
      // will be ignored by the interpreter, but if it ends with
      // two (or more) holes, we need to write out two (or more)
      // commas so that the resulting code is interpreted with
      // both (all) of the holes.
      this.push(",");
    } else {
      if (i > 0) this.push(" ");
      print(elem);
      if (i < len - 1) this.push(",");
    }
  }

  this.push("]");
}

exports.ArrayPattern = ArrayExpression;

function Literal(node) {
  var val = node.value;
  var type = typeof val;

  if (type === "string") {
    this._stringLiteral(val);
  } else if (type === "number") {
    this.push(val + "");
  } else if (type === "boolean") {
    this.push(val ? "true" : "false");
  } else if (node.regex) {
    this.push("/" + node.regex.pattern + "/" + node.regex.flags);
  } else if (val === null) {
    this.push("null");
  }
}

function _stringLiteral(val) {
  val = JSON.stringify(val);

  // escape illegal js but valid json unicode characters
  val = val.replace(/[\u000A\u000D\u2028\u2029]/g, function (c) {
    return "\\u" + ("0000" + c.charCodeAt(0).toString(16)).slice(-4);
  });

  if (this.format.quotes === "single") {
    val = val.slice(1, -1);
    val = val.replace(/\\"/g, "\"");
    val = val.replace(/'/g, "\\'");
    val = "'" + val + "'";
  }

  this.push(val);
}
},{"../../types":169,"lodash/collection/each":330}],35:[function(require,module,exports){
"use strict";

var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var _detectIndent = require("detect-indent");

var _detectIndent2 = _interopRequireDefault(_detectIndent);

var _whitespace = require("./whitespace");

var _whitespace2 = _interopRequireDefault(_whitespace);

var _repeating = require("repeating");

var _repeating2 = _interopRequireDefault(_repeating);

var _sourceMap = require("./source-map");

var _sourceMap2 = _interopRequireDefault(_sourceMap);

var _position = require("./position");

var _position2 = _interopRequireDefault(_position);

var _messages = require("../messages");

var messages = _interopRequireWildcard(_messages);

var _buffer = require("./buffer");

var _buffer2 = _interopRequireDefault(_buffer);

var _lodashObjectExtend = require("lodash/object/extend");

var _lodashObjectExtend2 = _interopRequireDefault(_lodashObjectExtend);

var _lodashCollectionEach = require("lodash/collection/each");

var _lodashCollectionEach2 = _interopRequireDefault(_lodashCollectionEach);

var _node = require("./node");

var _node2 = _interopRequireDefault(_node);

var _types = require("../types");

var t = _interopRequireWildcard(_types);

var CodeGenerator = (function () {
  function CodeGenerator(ast, opts, code) {
    _classCallCheck(this, CodeGenerator);

    opts = opts || {};

    this.comments = ast.comments || [];
    this.tokens = ast.tokens || [];
    this.format = CodeGenerator.normalizeOptions(code, opts, this.tokens);
    this.opts = opts;
    this.ast = ast;

    this.whitespace = new _whitespace2["default"](this.tokens, this.comments, this.format);
    this.position = new _position2["default"]();
    this.map = new _sourceMap2["default"](this.position, opts, code);
    this.buffer = new _buffer2["default"](this.position, this.format);
  }

  CodeGenerator.normalizeOptions = function normalizeOptions(code, opts, tokens) {
    var style = "  ";
    if (code) {
      var indent = (0, _detectIndent2["default"])(code).indent;
      if (indent && indent !== " ") style = indent;
    }

    var format = {
      retainLines: opts.retainLines,
      comments: opts.comments == null || opts.comments,
      compact: opts.compact,
      quotes: CodeGenerator.findCommonStringDelimiter(code, tokens),
      indent: {
        adjustMultilineComment: true,
        style: style,
        base: 0
      }
    };

    if (format.compact === "auto") {
      format.compact = code.length > 100000; // 100KB

      if (format.compact) {
        console.error("[BABEL] " + messages.get("codeGeneratorDeopt", opts.filename, "100KB"));
      }
    }

    return format;
  };

  CodeGenerator.findCommonStringDelimiter = function findCommonStringDelimiter(code, tokens) {
    var occurences = {
      single: 0,
      double: 0
    };

    var checked = 0;

    for (var i = 0; i < tokens.length; i++) {
      var token = tokens[i];
      if (token.type.label !== "string") continue;
      if (checked >= 3) continue;

      var raw = code.slice(token.start, token.end);
      if (raw[0] === "'") {
        occurences.single++;
      } else {
        occurences.double++;
      }

      checked++;
    }

    if (occurences.single > occurences.double) {
      return "single";
    } else {
      return "double";
    }
  };

  CodeGenerator.prototype.generate = function generate() {
    var ast = this.ast;

    this.print(ast);

    if (ast.comments) {
      var comments = [];
      var _arr = ast.comments;
      for (var _i = 0; _i < _arr.length; _i++) {
        var comment = _arr[_i];
        if (!comment._displayed) comments.push(comment);
      }
      this._printComments(comments);
    }

    return {
      map: this.map.get(),
      code: this.buffer.get()
    };
  };

  CodeGenerator.prototype.buildPrint = function buildPrint(parent) {
    var _this = this;

    var print = function print(node, opts) {
      return _this.print(node, parent, opts);
    };

    print.sequence = function (nodes) {
      var opts = arguments[1] === undefined ? {} : arguments[1];

      opts.statement = true;
      return _this.printJoin(print, nodes, opts);
    };

    print.join = function (nodes, opts) {
      return _this.printJoin(print, nodes, opts);
    };

    print.list = function (items) {
      var opts = arguments[1] === undefined ? {} : arguments[1];

      if (opts.separator == null) opts.separator = ", ";
      print.join(items, opts);
    };

    print.block = function (node) {
      return _this.printBlock(print, node);
    };

    print.indentOnComments = function (node) {
      return _this.printAndIndentOnComments(print, node);
    };

    return print;
  };

  CodeGenerator.prototype.catchUp = function catchUp(node, parent, leftParenPrinted) {
    // catch up to this nodes newline if we're behind
    if (node.loc && this.format.retainLines && this.buffer.buf) {
      var needsParens = false;
      if (!leftParenPrinted && parent && this.position.line < node.loc.start.line && t.isTerminatorless(parent)) {
        needsParens = true;
        this._push("(");
      }
      while (this.position.line < node.loc.start.line) {
        this._push("\n");
      }
      return needsParens;
    }
    return false;
  };

  CodeGenerator.prototype.print = function print(node, parent) {
    var _this2 = this;

    var opts = arguments[2] === undefined ? {} : arguments[2];

    if (!node) return;

    if (parent && parent._compact) {
      node._compact = true;
    }

    var oldConcise = this.format.concise;
    if (node._compact) {
      this.format.concise = true;
    }

    var newline = function newline(leading) {
      if (!opts.statement && !_node2["default"].isUserWhitespacable(node, parent)) {
        return;
      }

      var lines = 0;

      if (node.start != null && !node._ignoreUserWhitespace) {
        // user node
        if (leading) {
          lines = _this2.whitespace.getNewlinesBefore(node);
        } else {
          lines = _this2.whitespace.getNewlinesAfter(node);
        }
      } else {
        // generated node
        if (!leading) lines++; // always include at least a single line after
        if (opts.addNewlines) lines += opts.addNewlines(leading, node) || 0;

        var needs = _node2["default"].needsWhitespaceAfter;
        if (leading) needs = _node2["default"].needsWhitespaceBefore;
        if (needs(node, parent)) lines++;

        // generated nodes can't add starting file whitespace
        if (!_this2.buffer.buf) lines = 0;
      }

      _this2.newline(lines);
    };

    if (this[node.type]) {
      var needsNoLineTermParens = _node2["default"].needsParensNoLineTerminator(node, parent);
      var needsParens = needsNoLineTermParens || _node2["default"].needsParens(node, parent);

      if (needsParens) this.push("(");
      if (needsNoLineTermParens) this.indent();

      this.printLeadingComments(node, parent);

      var needsParensFromCatchup = this.catchUp(node, parent, needsParens);

      newline(true);

      if (opts.before) opts.before();
      this.map.mark(node, "start");

      this[node.type](node, this.buildPrint(node), parent);

      if (needsNoLineTermParens) {
        this.newline();
        this.dedent();
      }
      if (needsParens || needsParensFromCatchup) this.push(")");

      this.map.mark(node, "end");
      if (opts.after) opts.after();

      this.format.concise = oldConcise;

      newline(false);

      this.printTrailingComments(node, parent);
    } else {
      throw new ReferenceError("unknown node of type " + JSON.stringify(node.type) + " with constructor " + JSON.stringify(node && node.constructor.name));
    }
  };

  CodeGenerator.prototype.printJoin = function printJoin(print, nodes) {
    var _this3 = this;

    var opts = arguments[2] === undefined ? {} : arguments[2];

    if (!nodes || !nodes.length) return;

    var len = nodes.length;

    if (opts.indent) this.indent();

    for (var i = 0; i < nodes.length; i++) {
      var node = nodes[i];
      print(node, {
        statement: opts.statement,
        addNewlines: opts.addNewlines,
        after: function after() {
          if (opts.iterator) {
            opts.iterator(node, i);
          }

          if (opts.separator && i < len - 1) {
            _this3.push(opts.separator);
          }
        }
      });
    }

    if (opts.indent) this.dedent();
  };

  CodeGenerator.prototype.printAndIndentOnComments = function printAndIndentOnComments(print, node) {
    var indent = !!node.leadingComments;
    if (indent) this.indent();
    print(node);
    if (indent) this.dedent();
  };

  CodeGenerator.prototype.printBlock = function printBlock(print, node) {
    if (t.isEmptyStatement(node)) {
      this.semicolon();
    } else {
      this.push(" ");
      print(node);
    }
  };

  CodeGenerator.prototype.generateComment = function generateComment(comment) {
    var val = comment.value;
    if (comment.type === "Line") {
      val = "//" + val;
    } else {
      val = "/*" + val + "*/";
    }
    return val;
  };

  CodeGenerator.prototype.printTrailingComments = function printTrailingComments(node, parent) {
    this._printComments(this.getComments("trailingComments", node, parent));
  };

  CodeGenerator.prototype.printLeadingComments = function printLeadingComments(node, parent) {
    this._printComments(this.getComments("leadingComments", node, parent));
  };

  CodeGenerator.prototype.getComments = function getComments(key, node, parent) {
    if (t.isExpressionStatement(parent)) {
      return [];
    }

    var comments = [];
    var nodes = [node];

    if (t.isExpressionStatement(node)) {
      nodes.push(node.argument);
    }

    var _arr2 = nodes;
    for (var _i2 = 0; _i2 < _arr2.length; _i2++) {
      var node = _arr2[_i2];
      comments = comments.concat(this._getComments(key, node));
    }

    return comments;
  };

  CodeGenerator.prototype._getComments = function _getComments(key, node) {
    return node && node[key] || [];
  };

  CodeGenerator.prototype._printComments = function _printComments(comments) {
    if (this.format.compact) return;
    if (!this.format.comments) return;
    if (!comments || !comments.length) return;

    var _arr3 = comments;
    for (var _i3 = 0; _i3 < _arr3.length; _i3++) {
      var comment = _arr3[_i3];
      var skip = false;

      if (this.ast.comments) {
        // find the original comment in the ast and set it as displayed
        var _arr4 = this.ast.comments;
        for (var _i4 = 0; _i4 < _arr4.length; _i4++) {
          var origComment = _arr4[_i4];
          if (origComment.start === comment.start) {
            // comment has already been output
            if (origComment._displayed) skip = true;

            origComment._displayed = true;
            break;
          }
        }
      }

      if (skip) return;

      this.catchUp(comment);

      // whitespace before
      this.newline(this.whitespace.getNewlinesBefore(comment));

      var column = this.position.column;
      var val = this.generateComment(comment);

      if (column && !this.isLast(["\n", " ", "[", "{"])) {
        this._push(" ");
        column++;
      }

      //
      if (comment.type === "Block" && this.format.indent.adjustMultilineComment) {
        var offset = comment.loc.start.column;
        if (offset) {
          var newlineRegex = new RegExp("\\n\\s{1," + offset + "}", "g");
          val = val.replace(newlineRegex, "\n");
        }

        var indent = Math.max(this.indentSize(), column);
        val = val.replace(/\n/g, "\n" + (0, _repeating2["default"])(" ", indent));
      }

      if (column === 0) {
        val = this.getIndent() + val;
      }

      // force a newline for line comments when retainLines is set in case the next printed node
      // doesn't catch up
      if (this.format.retainLines && comment.type === "Line") {
        val += "\n";
      }

      //
      this._push(val);

      // whitespace after
      this.newline(this.whitespace.getNewlinesAfter(comment));
    }
  };

  _createClass(CodeGenerator, null, [{
    key: "generators",
    value: {
      templateLiterals: require("./generators/template-literals"),
      comprehensions: require("./generators/comprehensions"),
      expressions: require("./generators/expressions"),
      statements: require("./generators/statements"),
      classes: require("./generators/classes"),
      methods: require("./generators/methods"),
      modules: require("./generators/modules"),
      types: require("./generators/types"),
      flow: require("./generators/flow"),
      base: require("./generators/base"),
      jsx: require("./generators/jsx")
    },
    enumerable: true
  }]);

  return CodeGenerator;
})();

(0, _lodashCollectionEach2["default"])(_buffer2["default"].prototype, function (fn, key) {
  CodeGenerator.prototype[key] = function () {
    return fn.apply(this.buffer, arguments);
  };
});

(0, _lodashCollectionEach2["default"])(CodeGenerator.generators, function (generator) {
  (0, _lodashObjectExtend2["default"])(CodeGenerator.prototype, generator);
});

module.exports = function (ast, opts, code) {
  var gen = new CodeGenerator(ast, opts, code);
  return gen.generate();
};

module.exports.CodeGenerator = CodeGenerator;
},{"../messages":47,"../types":169,"./buffer":23,"./generators/base":24,"./generators/classes":25,"./generators/comprehensions":26,"./generators/expressions":27,"./generators/flow":28,"./generators/jsx":29,"./generators/methods":30,"./generators/modules":31,"./generators/statements":32,"./generators/template-literals":33,"./generators/types":34,"./node":36,"./position":39,"./source-map":40,"./whitespace":41,"detect-indent":306,"lodash/collection/each":330,"lodash/object/extend":419,"repeating":479}],36:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var _whitespace = require("./whitespace");

var _whitespace2 = _interopRequireDefault(_whitespace);

var _parentheses = require("./parentheses");

var parens = _interopRequireWildcard(_parentheses);

var _lodashCollectionEach = require("lodash/collection/each");

var _lodashCollectionEach2 = _interopRequireDefault(_lodashCollectionEach);

var _lodashCollectionSome = require("lodash/collection/some");

var _lodashCollectionSome2 = _interopRequireDefault(_lodashCollectionSome);

var _types = require("../../types");

var t = _interopRequireWildcard(_types);

var find = function find(obj, node, parent) {
  if (!obj) return;
  var result;

  var types = Object.keys(obj);
  for (var i = 0; i < types.length; i++) {
    var type = types[i];

    if (t.is(type, node)) {
      var fn = obj[type];
      result = fn(node, parent);
      if (result != null) break;
    }
  }

  return result;
};

var Node = (function () {
  function Node(node, parent) {
    _classCallCheck(this, Node);

    this.parent = parent;
    this.node = node;
  }

  Node.isUserWhitespacable = function isUserWhitespacable(node) {
    return t.isUserWhitespacable(node);
  };

  Node.needsWhitespace = function needsWhitespace(node, parent, type) {
    if (!node) return 0;

    if (t.isExpressionStatement(node)) {
      node = node.expression;
    }

    var linesInfo = find(_whitespace2["default"].nodes, node, parent);

    if (!linesInfo) {
      var items = find(_whitespace2["default"].list, node, parent);
      if (items) {
        for (var i = 0; i < items.length; i++) {
          linesInfo = Node.needsWhitespace(items[i], node, type);
          if (linesInfo) break;
        }
      }
    }

    return linesInfo && linesInfo[type] || 0;
  };

  Node.needsWhitespaceBefore = function needsWhitespaceBefore(node, parent) {
    return Node.needsWhitespace(node, parent, "before");
  };

  Node.needsWhitespaceAfter = function needsWhitespaceAfter(node, parent) {
    return Node.needsWhitespace(node, parent, "after");
  };

  Node.needsParens = function needsParens(node, parent) {
    if (!parent) return false;

    if (t.isNewExpression(parent) && parent.callee === node) {
      if (t.isCallExpression(node)) return true;

      var hasCall = (0, _lodashCollectionSome2["default"])(node, function (val) {
        return t.isCallExpression(val);
      });
      if (hasCall) return true;
    }

    return find(parens, node, parent);
  };

  Node.needsParensNoLineTerminator = function needsParensNoLineTerminator(node, parent) {
    if (!parent) return false;

    // no comments
    if (!node.leadingComments || !node.leadingComments.length) {
      return false;
    }

    return t.isTerminatorless(parent);
  };

  return Node;
})();

exports["default"] = Node;

(0, _lodashCollectionEach2["default"])(Node, function (fn, key) {
  Node.prototype[key] = function () {
    // Avoid leaking arguments to prevent deoptimization
    var args = new Array(arguments.length + 2);

    args[0] = this.node;
    args[1] = this.parent;

    for (var i = 0; i < args.length; i++) {
      args[i + 2] = arguments[i];
    }

    return Node[key].apply(null, args);
  };
});
module.exports = exports["default"];
},{"../../types":169,"./parentheses":37,"./whitespace":38,"lodash/collection/each":330,"lodash/collection/some":335}],37:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.NullableTypeAnnotation = NullableTypeAnnotation;
exports.UpdateExpression = UpdateExpression;
exports.ObjectExpression = ObjectExpression;
exports.Binary = Binary;
exports.BinaryExpression = BinaryExpression;
exports.SequenceExpression = SequenceExpression;
exports.YieldExpression = YieldExpression;
exports.ClassExpression = ClassExpression;
exports.UnaryLike = UnaryLike;
exports.FunctionExpression = FunctionExpression;
exports.ConditionalExpression = ConditionalExpression;
exports.AssignmentExpression = AssignmentExpression;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _lodashCollectionEach = require("lodash/collection/each");

var _lodashCollectionEach2 = _interopRequireDefault(_lodashCollectionEach);

var _types = require("../../types");

var t = _interopRequireWildcard(_types);

var PRECEDENCE = {};

(0, _lodashCollectionEach2["default"])([["||"], ["&&"], ["|"], ["^"], ["&"], ["==", "===", "!=", "!=="], ["<", ">", "<=", ">=", "in", "instanceof"], [">>", "<<", ">>>"], ["+", "-"], ["*", "/", "%"], ["**"]], function (tier, i) {
  (0, _lodashCollectionEach2["default"])(tier, function (op) {
    PRECEDENCE[op] = i;
  });
});

function NullableTypeAnnotation(node, parent) {
  return t.isArrayTypeAnnotation(parent);
}

exports.FunctionTypeAnnotation = NullableTypeAnnotation;

function UpdateExpression(node, parent) {
  if (t.isMemberExpression(parent) && parent.object === node) {
    // (foo++).test()
    return true;
  }
}

function ObjectExpression(node, parent) {
  if (t.isExpressionStatement(parent)) {
    // ({ foo: "bar" });
    return true;
  }

  if (t.isMemberExpression(parent) && parent.object === node) {
    // ({ foo: "bar" }).foo
    return true;
  }

  return false;
}

function Binary(node, parent) {
  if ((t.isCallExpression(parent) || t.isNewExpression(parent)) && parent.callee === node) {
    return true;
  }

  if (t.isUnaryLike(parent)) {
    return true;
  }

  if (t.isMemberExpression(parent) && parent.object === node) {
    return true;
  }

  if (t.isBinary(parent)) {
    var parentOp = parent.operator;
    var parentPos = PRECEDENCE[parentOp];

    var nodeOp = node.operator;
    var nodePos = PRECEDENCE[nodeOp];

    if (parentPos > nodePos) {
      return true;
    }

    if (parentPos === nodePos && parent.right === node) {
      return true;
    }
  }
}

function BinaryExpression(node, parent) {
  if (node.operator === "in") {
    // var i = (1 in []);
    if (t.isVariableDeclarator(parent)) {
      return true;
    }

    // for ((1 in []);;);
    if (t.isFor(parent)) {
      return true;
    }
  }
}

function SequenceExpression(node, parent) {
  if (t.isForStatement(parent)) {
    // Although parentheses wouldn't hurt around sequence
    // expressions in the head of for loops, traditional style
    // dictates that e.g. i++, j++ should not be wrapped with
    // parentheses.
    return false;
  }

  if (t.isExpressionStatement(parent) && parent.expression === node) {
    return false;
  }

  // Otherwise err on the side of overparenthesization, adding
  // explicit exceptions above if this proves overzealous.
  return true;
}

function YieldExpression(node, parent) {
  return t.isBinary(parent) || t.isUnaryLike(parent) || t.isCallExpression(parent) || t.isMemberExpression(parent) || t.isNewExpression(parent) || t.isConditionalExpression(parent) || t.isYieldExpression(parent);
}

function ClassExpression(node, parent) {
  return t.isExpressionStatement(parent);
}

function UnaryLike(node, parent) {
  return t.isMemberExpression(parent) && parent.object === node;
}

function FunctionExpression(node, parent) {
  // function () {};
  if (t.isExpressionStatement(parent)) {
    return true;
  }

  // (function test() {}).name;
  if (t.isMemberExpression(parent) && parent.object === node) {
    return true;
  }

  // (function () {})();
  if (t.isCallExpression(parent) && parent.callee === node) {
    return true;
  }
}

function ConditionalExpression(node, parent) {
  if (t.isUnaryLike(parent)) {
    return true;
  }

  if (t.isBinary(parent)) {
    return true;
  }

  if (t.isCallExpression(parent) || t.isNewExpression(parent)) {
    if (parent.callee === node) {
      return true;
    }
  }

  if (t.isConditionalExpression(parent) && parent.test === node) {
    return true;
  }

  if (t.isMemberExpression(parent) && parent.object === node) {
    return true;
  }

  return false;
}

function AssignmentExpression(node) {
  if (t.isObjectPattern(node.left)) {
    return true;
  } else {
    return ConditionalExpression.apply(undefined, arguments);
  }
}
},{"../../types":169,"lodash/collection/each":330}],38:[function(require,module,exports){
"use strict";

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _lodashLangIsBoolean = require("lodash/lang/isBoolean");

var _lodashLangIsBoolean2 = _interopRequireDefault(_lodashLangIsBoolean);

var _lodashCollectionEach = require("lodash/collection/each");

var _lodashCollectionEach2 = _interopRequireDefault(_lodashCollectionEach);

var _lodashCollectionMap = require("lodash/collection/map");

var _lodashCollectionMap2 = _interopRequireDefault(_lodashCollectionMap);

var _types = require("../../types");

var t = _interopRequireWildcard(_types);

function crawl(node) {
  var state = arguments[1] === undefined ? {} : arguments[1];

  if (t.isMemberExpression(node)) {
    crawl(node.object, state);
    if (node.computed) crawl(node.property, state);
  } else if (t.isBinary(node) || t.isAssignmentExpression(node)) {
    crawl(node.left, state);
    crawl(node.right, state);
  } else if (t.isCallExpression(node)) {
    state.hasCall = true;
    crawl(node.callee, state);
  } else if (t.isFunction(node)) {
    state.hasFunction = true;
  } else if (t.isIdentifier(node)) {
    state.hasHelper = state.hasHelper || isHelper(node.callee);
  }

  return state;
}

function isHelper(node) {
  if (t.isMemberExpression(node)) {
    return isHelper(node.object) || isHelper(node.property);
  } else if (t.isIdentifier(node)) {
    return node.name === "require" || node.name[0] === "_";
  } else if (t.isCallExpression(node)) {
    return isHelper(node.callee);
  } else if (t.isBinary(node) || t.isAssignmentExpression(node)) {
    return t.isIdentifier(node.left) && isHelper(node.left) || isHelper(node.right);
  } else {
    return false;
  }
}

function isType(node) {
  return t.isLiteral(node) || t.isObjectExpression(node) || t.isArrayExpression(node) || t.isIdentifier(node) || t.isMemberExpression(node);
}

exports.nodes = {
  AssignmentExpression: function AssignmentExpression(node) {
    var state = crawl(node.right);
    if (state.hasCall && state.hasHelper || state.hasFunction) {
      return {
        before: state.hasFunction,
        after: true
      };
    }
  },

  SwitchCase: function SwitchCase(node, parent) {
    return {
      before: node.consequent.length || parent.cases[0] === node
    };
  },

  LogicalExpression: function LogicalExpression(node) {
    if (t.isFunction(node.left) || t.isFunction(node.right)) {
      return {
        after: true
      };
    }
  },

  Literal: function Literal(node) {
    if (node.value === "use strict") {
      return {
        after: true
      };
    }
  },

  CallExpression: function CallExpression(node) {
    if (t.isFunction(node.callee) || isHelper(node)) {
      return {
        before: true,
        after: true
      };
    }
  },

  VariableDeclaration: function VariableDeclaration(node) {
    for (var i = 0; i < node.declarations.length; i++) {
      var declar = node.declarations[i];

      var enabled = isHelper(declar.id) && !isType(declar.init);
      if (!enabled) {
        var state = crawl(declar.init);
        enabled = isHelper(declar.init) && state.hasCall || state.hasFunction;
      }

      if (enabled) {
        return {
          before: true,
          after: true
        };
      }
    }
  },

  IfStatement: function IfStatement(node) {
    if (t.isBlockStatement(node.consequent)) {
      return {
        before: true,
        after: true
      };
    }
  }
};

exports.nodes.Property = exports.nodes.SpreadProperty = function (node, parent) {
  if (parent.properties[0] === node) {
    return {
      before: true
    };
  }
};

exports.list = {
  VariableDeclaration: function VariableDeclaration(node) {
    return (0, _lodashCollectionMap2["default"])(node.declarations, "init");
  },

  ArrayExpression: function ArrayExpression(node) {
    return node.elements;
  },

  ObjectExpression: function ObjectExpression(node) {
    return node.properties;
  }
};

(0, _lodashCollectionEach2["default"])({
  Function: true,
  Class: true,
  Loop: true,
  LabeledStatement: true,
  SwitchStatement: true,
  TryStatement: true
}, function (amounts, type) {
  if ((0, _lodashLangIsBoolean2["default"])(amounts)) {
    amounts = { after: amounts, before: amounts };
  }

  (0, _lodashCollectionEach2["default"])([type].concat(t.FLIPPED_ALIAS_KEYS[type] || []), function (type) {
    exports.nodes[type] = function () {
      return amounts;
    };
  });
});
},{"../../types":169,"lodash/collection/each":330,"lodash/collection/map":333,"lodash/lang/isBoolean":406}],39:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var Position = (function () {
  function Position() {
    _classCallCheck(this, Position);

    this.line = 1;
    this.column = 0;
  }

  Position.prototype.push = function push(str) {
    for (var i = 0; i < str.length; i++) {
      if (str[i] === "\n") {
        this.line++;
        this.column = 0;
      } else {
        this.column++;
      }
    }
  };

  Position.prototype.unshift = function unshift(str) {
    for (var i = 0; i < str.length; i++) {
      if (str[i] === "\n") {
        this.line--;
      } else {
        this.column--;
      }
    }
  };

  return Position;
})();

exports["default"] = Position;
module.exports = exports["default"];
},{}],40:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var _sourceMap = require("source-map");

var _sourceMap2 = _interopRequireDefault(_sourceMap);

var _types = require("../types");

var t = _interopRequireWildcard(_types);

var SourceMap = (function () {
  function SourceMap(position, opts, code) {
    _classCallCheck(this, SourceMap);

    this.position = position;
    this.opts = opts;

    if (opts.sourceMaps) {
      this.map = new _sourceMap2["default"].SourceMapGenerator({
        file: opts.sourceMapName,
        sourceRoot: opts.sourceRoot
      });

      this.map.setSourceContent(opts.sourceFileName, code);
    } else {
      this.map = null;
    }
  }

  SourceMap.prototype.get = function get() {
    var map = this.map;
    if (map) {
      return map.toJSON();
    } else {
      return map;
    }
  };

  SourceMap.prototype.mark = function mark(node, type) {
    var loc = node.loc;
    if (!loc) return; // no location info

    var map = this.map;
    if (!map) return; // no source map

    if (t.isProgram(node) || t.isFile(node)) return; // illegal mapping nodes

    var position = this.position;

    var generated = {
      line: position.line,
      column: position.column
    };

    var original = loc[type];

    map.addMapping({
      source: this.opts.sourceFileName,
      generated: generated,
      original: original
    });
  };

  return SourceMap;
})();

exports["default"] = SourceMap;
module.exports = exports["default"];
},{"../types":169,"source-map":483}],41:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var _lodashCollectionSortBy = require("lodash/collection/sortBy");

var _lodashCollectionSortBy2 = _interopRequireDefault(_lodashCollectionSortBy);

/**
 * Returns `i`th number from `base`, continuing from 0 when `max` is reached.
 * Useful for shifting `for` loop by a fixed number but going over all items.
 *
 * @param {Number} i Current index in the loop
 * @param {Number} base Start index for which to return 0
 * @param {Number} max Array length
 * @returns {Number} shiftedIndex
 */

function getLookupIndex(i, base, max) {
  i += base;

  if (i >= max) {
    i -= max;
  }

  return i;
}

var Whitespace = (function () {
  function Whitespace(tokens, comments) {
    _classCallCheck(this, Whitespace);

    this.tokens = (0, _lodashCollectionSortBy2["default"])(tokens.concat(comments), "start");
    this.used = {};

    // Profiling this code shows that while generator passes over it, indexes
    // returned by `getNewlinesBefore` and `getNewlinesAfter` are always increasing.

    // We use this implementation detail for an optimization: instead of always
    // starting to look from `this.tokens[0]`, we will start `for` loops from the
    // previous successful match. We will enumerate all tokens—but the common
    // case will be much faster.

    this._lastFoundIndex = 0;
  }

  Whitespace.prototype.getNewlinesBefore = function getNewlinesBefore(node) {
    var startToken;
    var endToken;
    var tokens = this.tokens;
    var token;

    for (var j = 0; j < tokens.length; j++) {
      // optimize for forward traversal by shifting for loop index
      var i = getLookupIndex(j, this._lastFoundIndex, this.tokens.length);
      token = tokens[i];

      // this is the token this node starts with
      if (node.start === token.start) {
        startToken = tokens[i - 1];
        endToken = token;

        this._lastFoundIndex = i;
        break;
      }
    }

    return this.getNewlinesBetween(startToken, endToken);
  };

  Whitespace.prototype.getNewlinesAfter = function getNewlinesAfter(node) {
    var startToken;
    var endToken;
    var tokens = this.tokens;
    var token;

    for (var j = 0; j < tokens.length; j++) {
      // optimize for forward traversal by shifting for loop index
      var i = getLookupIndex(j, this._lastFoundIndex, this.tokens.length);
      token = tokens[i];

      // this is the token this node ends with
      if (node.end === token.end) {
        startToken = token;
        endToken = tokens[i + 1];

        this._lastFoundIndex = i;
        break;
      }
    }

    if (endToken && endToken.type.label === "eof") {
      return 1;
    } else {
      var lines = this.getNewlinesBetween(startToken, endToken);
      if (node.type === "Line" && !lines) {
        // line comment
        return 1;
      } else {
        return lines;
      }
    }
  };

  Whitespace.prototype.getNewlinesBetween = function getNewlinesBetween(startToken, endToken) {
    if (!endToken || !endToken.loc) return 0;

    var start = startToken ? startToken.loc.end.line : 1;
    var end = endToken.loc.start.line;
    var lines = 0;

    for (var line = start; line < end; line++) {
      if (typeof this.used[line] === "undefined") {
        this.used[line] = true;
        lines++;
      }
    }

    return lines;
  };

  return Whitespace;
})();

exports["default"] = Whitespace;
module.exports = exports["default"];
},{"lodash/collection/sortBy":336}],42:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _lineNumbers = require("line-numbers");

var _lineNumbers2 = _interopRequireDefault(_lineNumbers);

var _repeating = require("repeating");

var _repeating2 = _interopRequireDefault(_repeating);

var _jsTokens = require("js-tokens");

var _jsTokens2 = _interopRequireDefault(_jsTokens);

var _esutils = require("esutils");

var _esutils2 = _interopRequireDefault(_esutils);

var _chalk = require("chalk");

var _chalk2 = _interopRequireDefault(_chalk);

var defs = {
  string: _chalk2["default"].red,
  punctuator: _chalk2["default"].bold,
  curly: _chalk2["default"].green,
  parens: _chalk2["default"].blue.bold,
  square: _chalk2["default"].yellow,
  keyword: _chalk2["default"].cyan,
  number: _chalk2["default"].magenta,
  regex: _chalk2["default"].magenta,
  comment: _chalk2["default"].grey,
  invalid: _chalk2["default"].inverse
};

var NEWLINE = /\r\n|[\n\r\u2028\u2029]/;

function getTokenType(match) {
  var token = _jsTokens2["default"].matchToToken(match);
  if (token.type === "name" && _esutils2["default"].keyword.isReservedWordES6(token.value)) {
    return "keyword";
  }

  if (token.type === "punctuator") {
    switch (token.value) {
      case "{":
      case "}":
        return "curly";
      case "(":
      case ")":
        return "parens";
      case "[":
      case "]":
        return "square";
    }
  }

  return token.type;
}

function highlight(text) {
  return text.replace(_jsTokens2["default"], function () {
    for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
      args[_key] = arguments[_key];
    }

    var type = getTokenType(args);
    var colorize = defs[type];
    if (colorize) {
      return args[0].split(NEWLINE).map(function (str) {
        return colorize(str);
      }).join("\n");
    } else {
      return args[0];
    }
  });
}

exports["default"] = function (lines, lineNumber, colNumber) {
  var opts = arguments[3] === undefined ? {} : arguments[3];

  colNumber = Math.max(colNumber, 0);

  if (opts.highlightCode && _chalk2["default"].supportsColor) {
    lines = highlight(lines);
  }

  lines = lines.split(NEWLINE);

  var start = Math.max(lineNumber - 3, 0);
  var end = Math.min(lines.length, lineNumber + 3);

  if (!lineNumber && !colNumber) {
    start = 0;
    end = lines.length;
  }

  return (0, _lineNumbers2["default"])(lines.slice(start, end), {
    start: start + 1,
    before: "  ",
    after: " | ",
    transform: function transform(params) {
      if (params.number !== lineNumber) {
        return;
      }
      if (colNumber) {
        params.line += "\n" + params.before + "" + (0, _repeating2["default"])(" ", params.width) + "" + params.after + "" + (0, _repeating2["default"])(" ", colNumber - 1) + "^";
      }
      params.before = params.before.replace(/^./, ">");
    }
  }).join("\n");
};

;
module.exports = exports["default"];
},{"chalk":217,"esutils":314,"js-tokens":320,"line-numbers":322,"repeating":479}],43:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _lodashObjectMerge = require("lodash/object/merge");

var _lodashObjectMerge2 = _interopRequireDefault(_lodashObjectMerge);

exports["default"] = function (dest, src) {
  if (!dest || !src) return;

  return (0, _lodashObjectMerge2["default"])(dest, src, function (a, b) {
    if (Array.isArray(a)) {
      var c = a.slice(0);
      for (var _iterator = b, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : _iterator[Symbol.iterator]();;) {
        var _ref;

        if (_isArray) {
          if (_i >= _iterator.length) break;
          _ref = _iterator[_i++];
        } else {
          _i = _iterator.next();
          if (_i.done) break;
          _ref = _i.value;
        }

        var v = _ref;

        if (a.indexOf(v) < 0) {
          c.push(v);
        }
      }
      return c;
    }
  });
};

module.exports = exports["default"];
},{"lodash/object/merge":423}],44:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _types = require("../types");

var t = _interopRequireWildcard(_types);

exports["default"] = function (ast, comments, tokens) {
  if (ast && ast.type === "Program") {
    return t.file(ast, comments || [], tokens || []);
  } else {
    throw new Error("Not a valid ast?");
  }
};

;
module.exports = exports["default"];
},{"../types":169}],45:[function(require,module,exports){
"use strict";

exports.__esModule = true;

exports["default"] = function () {
  return Object.create(null);
};

;
module.exports = exports["default"];
},{}],46:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _normalizeAst = require("./normalize-ast");

var _normalizeAst2 = _interopRequireDefault(_normalizeAst);

var _estraverse = require("estraverse");

var _estraverse2 = _interopRequireDefault(_estraverse);

var _acorn = require("../../acorn");

var acorn = _interopRequireWildcard(_acorn);

exports["default"] = function (code) {
  var opts = arguments[1] === undefined ? {} : arguments[1];

  var comments = [];
  var tokens = [];

  var parseOpts = {
    allowImportExportEverywhere: opts.looseModules,
    allowReturnOutsideFunction: opts.looseModules,
    allowHashBang: true,
    ecmaVersion: 6,
    strictMode: opts.strictMode,
    sourceType: opts.sourceType,
    locations: true,
    onComment: comments,
    features: opts.features || {},
    plugins: opts.plugins || {},
    onToken: tokens,
    ranges: true
  };

  if (opts.nonStandard) {
    parseOpts.plugins.jsx = true;
    parseOpts.plugins.flow = true;
  }

  var ast = acorn.parse(code, parseOpts);

  _estraverse2["default"].attachComments(ast, comments, tokens);
  ast = (0, _normalizeAst2["default"])(ast, comments, tokens);
  return ast;
};

module.exports = exports["default"];
},{"../../acorn":1,"./normalize-ast":44,"estraverse":309}],47:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.get = get;
exports.parseArgs = parseArgs;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _util = require("util");

var util = _interopRequireWildcard(_util);

var MESSAGES = {
  tailCallReassignmentDeopt: "Function reference has been reassigned so it's probably be dereferenced so we can't optimise this with confidence",
  JSXNamespacedTags: "Namespace tags are not supported. ReactJSX is not XML.",
  classesIllegalBareSuper: "Illegal use of bare super",
  classesIllegalSuperCall: "Direct super call is illegal in non-constructor, use super.$1() instead",
  classesIllegalConstructorKind: "Illegal kind for constructor method",
  scopeDuplicateDeclaration: "Duplicate declaration $1",
  undeclaredVariable: "Reference to undeclared variable $1",
  undeclaredVariableSuggestion: "Reference to undeclared variable $1 - did you mean $2?",
  settersInvalidParamLength: "Setters must have exactly one parameter",
  settersNoRest: "Setters aren't allowed to have a rest",
  noAssignmentsInForHead: "No assignments allowed in for-in/of head",
  expectedMemberExpressionOrIdentifier: "Expected type MemeberExpression or Identifier",
  invalidParentForThisNode: "We don't know how to handle this node within the current parent - please open an issue",
  readOnly: "$1 is read-only",
  modulesIllegalExportName: "Illegal export $1",
  unknownForHead: "Unknown node type $1 in ForStatement",
  didYouMean: "Did you mean $1?",
  codeGeneratorDeopt: "Note: The code generator has deoptimised the styling of $1 as it exceeds the max of $2.",
  missingTemplatesDirectory: "no templates directory - this is most likely the result of a broken `npm publish`. Please report to https://github.com/babel/babel/issues",
  unsupportedOutputType: "Unsupported output type $1",
  illegalMethodName: "Illegal method name $1",
  lostTrackNodePath: "We lost track of this nodes position, likely because the AST was directly manipulated",

  traverseNeedsParent: "Must pass a scope and parentPath unless traversing a Program/File got a $1 node",
  traverseVerifyRootFunction: "You passed `traverse()` a function when it expected a visitor object, are you sure you didn't mean `{ enter: Function }`?",
  traverseVerifyVisitorProperty: "You passed `traverse()` a visitor object with the property $1 that has the invalid property $2",
  traverseVerifyNodeType: "You gave us a visitor for the node type $1 but it's not a valid type",

  pluginIllegalKind: "Illegal kind $1 for plugin $2",
  pluginIllegalPosition: "Illegal position $1 for plugin $2",
  pluginKeyCollision: "The plugin $1 collides with another of the same name",
  pluginNotTransformer: "The plugin $1 didn't export a Transformer instance",
  pluginUnknown: "Unknown plugin $1",

  transformerNotFile: "Transformer $1 is resolving to a different Babel version to what is doing the actual transformation..."
};

exports.MESSAGES = MESSAGES;

function get(key) {
  for (var _len = arguments.length, args = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
    args[_key - 1] = arguments[_key];
  }

  var msg = MESSAGES[key];
  if (!msg) throw new ReferenceError("Unknown message " + JSON.stringify(key));

  args = parseArgs(args);

  return msg.replace(/\$(\d+)/g, function (str, i) {
    return args[--i];
  });
}

function parseArgs(args) {
  return args.map(function (val) {
    if (val != null && val.inspect) {
      return val.inspect();
    } else {
      try {
        return JSON.stringify(val) || val + "";
      } catch (e) {
        return util.inspect(val);
      }
    }
  });
}
},{"util":216}],48:[function(require,module,exports){
"use strict";

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _estraverse = require("estraverse");

var _estraverse2 = _interopRequireDefault(_estraverse);

var _lodashObjectExtend = require("lodash/object/extend");

var _lodashObjectExtend2 = _interopRequireDefault(_lodashObjectExtend);

var _astTypes = require("ast-types");

var _astTypes2 = _interopRequireDefault(_astTypes);

var _types = require("./types");

var t = _interopRequireWildcard(_types);

// estraverse

(0, _lodashObjectExtend2["default"])(_estraverse2["default"].VisitorKeys, t.VISITOR_KEYS);

// regenerator/ast-types

var def = _astTypes2["default"].Type.def;
var or = _astTypes2["default"].Type.or;

//def("File")
//  .bases("Node")
//  .build("program")
//  .field("program", def("Program"));

def("AssignmentPattern").bases("Pattern").build("left", "right").field("left", def("Pattern")).field("right", def("Expression"));

def("RestElement").bases("Pattern").build("argument").field("argument", def("expression"));

def("DoExpression").bases("Expression").build("body").field("body", [def("Statement")]);

def("Super").bases("Expression");

def("ExportDefaultDeclaration").bases("Declaration").build("declaration").field("declaration", or(def("Declaration"), def("Expression"), null));

def("ExportNamedDeclaration").bases("Declaration").build("declaration").field("declaration", or(def("Declaration"), def("Expression"), null)).field("specifiers", [or(def("ExportSpecifier"))]).field("source", or(def("ModuleSpecifier"), null));

def("ExportNamespaceSpecifier").bases("Specifier").field("exported", def("Identifier"));

def("ExportDefaultSpecifier").bases("Specifier").field("exported", def("Identifier"));

def("ExportAllDeclaration").bases("Declaration").build("exported", "source").field("exported", def("Identifier")).field("source", def("Literal"));

def("BindExpression").bases("Expression").build("object", "callee").field("object", or(def("Expression"), null)).field("callee", def("Expression"));

_astTypes2["default"].finalize();
},{"./types":169,"ast-types":188,"estraverse":309,"lodash/object/extend":419}],49:[function(require,module,exports){
(function (global){
"use strict";

require("core-js/shim");

require("regenerator/runtime");

if (global._babelPolyfill) {
  throw new Error("only one instance of babel/polyfill is allowed");
}
global._babelPolyfill = true;
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"core-js/shim":302,"regenerator/runtime":472}],50:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _generation = require("../generation");

var _generation2 = _interopRequireDefault(_generation);

var _messages = require("../messages");

var messages = _interopRequireWildcard(_messages);

var _util = require("../util");

var util = _interopRequireWildcard(_util);

var _transformationFile = require("../transformation/file");

var _transformationFile2 = _interopRequireDefault(_transformationFile);

var _lodashCollectionEach = require("lodash/collection/each");

var _lodashCollectionEach2 = _interopRequireDefault(_lodashCollectionEach);

var _types = require("../types");

var t = _interopRequireWildcard(_types);

function buildGlobal(namespace, builder) {
  var body = [];
  var container = t.functionExpression(null, [t.identifier("global")], t.blockStatement(body));
  var tree = t.program([t.expressionStatement(t.callExpression(container, [util.template("helper-self-global")]))]);

  body.push(t.variableDeclaration("var", [t.variableDeclarator(namespace, t.assignmentExpression("=", t.memberExpression(t.identifier("global"), namespace), t.objectExpression([])))]));

  builder(body);

  return tree;
}

function buildUmd(namespace, builder) {
  var body = [];
  body.push(t.variableDeclaration("var", [t.variableDeclarator(namespace, t.identifier("global"))]));

  builder(body);

  var container = util.template("umd-commonjs-strict", {
    FACTORY_PARAMETERS: t.identifier("global"),
    BROWSER_ARGUMENTS: t.assignmentExpression("=", t.memberExpression(t.identifier("root"), namespace), t.objectExpression({})),
    COMMON_ARGUMENTS: t.identifier("exports"),
    AMD_ARGUMENTS: t.arrayExpression([t.literal("exports")]),
    FACTORY_BODY: body,
    UMD_ROOT: t.identifier("this")
  });
  return t.program([container]);
}

function buildVar(namespace, builder) {
  var body = [];
  body.push(t.variableDeclaration("var", [t.variableDeclarator(namespace, t.objectExpression({}))]));
  builder(body);
  return t.program(body);
}

function buildHelpers(body, namespace, whitelist) {
  (0, _lodashCollectionEach2["default"])(_transformationFile2["default"].helpers, function (name) {
    if (whitelist && whitelist.indexOf(name) === -1) return;

    var key = t.identifier(t.toIdentifier(name));
    body.push(t.expressionStatement(t.assignmentExpression("=", t.memberExpression(namespace, key), util.template("helper-" + name))));
  });
}

exports["default"] = function (whitelist) {
  var outputType = arguments[1] === undefined ? "global" : arguments[1];

  var namespace = t.identifier("babelHelpers");

  var builder = function builder(body) {
    return buildHelpers(body, namespace, whitelist);
  };

  var tree;

  var build = ({
    global: buildGlobal,
    umd: buildUmd,
    "var": buildVar
  })[outputType];

  if (build) {
    tree = build(namespace, builder);
  } else {
    throw new Error(messages.get("unsupportedOutputType", outputType));
  }

  return (0, _generation2["default"])(tree).code;
};

;
module.exports = exports["default"];
},{"../generation":35,"../messages":47,"../transformation/file":52,"../types":169,"../util":173,"lodash/collection/each":330}],51:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _stripJsonComments = require("strip-json-comments");

var _stripJsonComments2 = _interopRequireDefault(_stripJsonComments);

var _helpersMerge = require("../helpers/merge");

var _helpersMerge2 = _interopRequireDefault(_helpersMerge);

var _path = require("path");

var _path2 = _interopRequireDefault(_path);

var _fs = require("fs");

var _fs2 = _interopRequireDefault(_fs);

var cache = {};
var jsons = {};

function exists(filename) {
  if (!_fs2["default"].existsSync) return false;

  var cached = cache[filename];
  if (cached != null) return cached;
  return cache[filename] = _fs2["default"].existsSync(filename);
}

exports["default"] = function (loc) {
  var opts = arguments[1] === undefined ? {} : arguments[1];

  var rel = ".babelrc";

  if (!opts.babelrc) {
    opts.babelrc = [];
  }

  function find(start, rel) {
    var file = _path2["default"].join(start, rel);

    if (opts.babelrc.indexOf(file) >= 0) {
      return;
    }

    if (exists(file)) {
      var content = _fs2["default"].readFileSync(file, "utf8");
      var json;

      try {
        json = jsons[content] = jsons[content] || JSON.parse((0, _stripJsonComments2["default"])(content));
      } catch (err) {
        err.message = "" + file + ": " + err.message;
        throw err;
      }

      opts.babelrc.push(file);

      if (json.breakConfig) return;
      (0, _helpersMerge2["default"])(opts, json);
    }

    var up = _path2["default"].dirname(start);
    if (up !== start) {
      // root
      find(up, rel);
    }
  }

  if (opts.babelrc.indexOf(loc) < 0 && opts.breakConfig !== true) {
    find(loc, rel);
  }

  return opts;
};

;
module.exports = exports["default"];
},{"../helpers/merge":43,"fs":189,"path":199,"strip-json-comments":494}],52:[function(require,module,exports){
(function (process){
"use strict";

exports.__esModule = true;

var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var _convertSourceMap = require("convert-source-map");

var _convertSourceMap2 = _interopRequireDefault(_convertSourceMap);

var _optionParsers = require("./option-parsers");

var optionParsers = _interopRequireWildcard(_optionParsers);

var _modules = require("../modules");

var _modules2 = _interopRequireDefault(_modules);

var _pluginManager = require("./plugin-manager");

var _pluginManager2 = _interopRequireDefault(_pluginManager);

var _shebangRegex = require("shebang-regex");

var _shebangRegex2 = _interopRequireDefault(_shebangRegex);

var _traversalPath = require("../../traversal/path");

var _traversalPath2 = _interopRequireDefault(_traversalPath);

var _transformer = require("../transformer");

var _transformer2 = _interopRequireDefault(_transformer);

var _lodashLangIsFunction = require("lodash/lang/isFunction");

var _lodashLangIsFunction2 = _interopRequireDefault(_lodashLangIsFunction);

var _pathIsAbsolute = require("path-is-absolute");

var _pathIsAbsolute2 = _interopRequireDefault(_pathIsAbsolute);

var _toolsResolveRc = require("../../tools/resolve-rc");

var _toolsResolveRc2 = _interopRequireDefault(_toolsResolveRc);

var _sourceMap = require("source-map");

var _sourceMap2 = _interopRequireDefault(_sourceMap);

var _index = require("./../index");

var _index2 = _interopRequireDefault(_index);

var _generation = require("../../generation");

var _generation2 = _interopRequireDefault(_generation);

var _helpersCodeFrame = require("../../helpers/code-frame");

var _helpersCodeFrame2 = _interopRequireDefault(_helpersCodeFrame);

var _lodashObjectDefaults = require("lodash/object/defaults");

var _lodashObjectDefaults2 = _interopRequireDefault(_lodashObjectDefaults);

var _lodashCollectionIncludes = require("lodash/collection/includes");

var _lodashCollectionIncludes2 = _interopRequireDefault(_lodashCollectionIncludes);

var _traversal = require("../../traversal");

var _traversal2 = _interopRequireDefault(_traversal);

var _lodashObjectAssign = require("lodash/object/assign");

var _lodashObjectAssign2 = _interopRequireDefault(_lodashObjectAssign);

var _logger = require("./logger");

var _logger2 = _interopRequireDefault(_logger);

var _helpersParse = require("../../helpers/parse");

var _helpersParse2 = _interopRequireDefault(_helpersParse);

var _traversalScope = require("../../traversal/scope");

var _traversalScope2 = _interopRequireDefault(_traversalScope);

var _helpersMerge = require("../../helpers/merge");

var _helpersMerge2 = _interopRequireDefault(_helpersMerge);

var _slash = require("slash");

var _slash2 = _interopRequireDefault(_slash);

var _lodashLangClone = require("lodash/lang/clone");

var _lodashLangClone2 = _interopRequireDefault(_lodashLangClone);

var _util = require("../../util");

var util = _interopRequireWildcard(_util);

var _apiNode = require("../../api/node");

var api = _interopRequireWildcard(_apiNode);

var _path = require("path");

var _path2 = _interopRequireDefault(_path);

var _types = require("../../types");

var t = _interopRequireWildcard(_types);

var File = (function () {
  function File(_x, pipeline) {
    var opts = arguments[0] === undefined ? {} : arguments[0];

    _classCallCheck(this, File);

    this.transformerDependencies = {};

    this.dynamicImportTypes = {};
    this.dynamicImportIds = {};
    this.dynamicImports = [];

    this.declarations = {};
    this.usedHelpers = {};
    this.dynamicData = {};
    this.metadata = {};
    this.data = {};

    this.pipeline = pipeline;
    this.log = new _logger2["default"](this, opts.filename || "unknown");
    this.opts = this.normalizeOptions(opts);
    this.ast = {};

    this.buildTransformers();
  }

  File.prototype.normalizeOptions = function normalizeOptions(opts) {
    opts = (0, _lodashObjectAssign2["default"])({}, opts);

    if (opts.filename) {
      var rcFilename = opts.filename;
      if (!(0, _pathIsAbsolute2["default"])(rcFilename)) rcFilename = _path2["default"].join(process.cwd(), rcFilename);
      opts = (0, _toolsResolveRc2["default"])(rcFilename, opts);
    }

    //

    for (var key in opts) {
      if (key[0] === "_") continue;

      var option = File.options[key];
      if (!option) this.log.error("Unknown option: " + key, ReferenceError);
    }

    var envKey = process.env.BABEL_ENV || process.env.NODE_ENV || "development";
    if (opts.env) (0, _helpersMerge2["default"])(opts, opts.env[envKey]);

    for (var key in File.options) {
      var option = File.options[key];

      var val = opts[key];
      if (!val && option.optional) continue;

      if (val && option.deprecated) {
        throw new Error("Deprecated option " + key + ": " + option.deprecated);
      }

      if (val == null) {
        val = (0, _lodashLangClone2["default"])(option["default"]);
      }

      var optionParser = optionParsers[option.type];
      if (optionParser) val = optionParser(key, val, this.pipeline);

      if (option.alias) {
        opts[option.alias] = opts[option.alias] || val;
      } else {
        opts[key] = val;
      }
    }

    if (opts.inputSourceMap) {
      opts.sourceMaps = true;
    }

    // normalize windows path separators to unix
    opts.filename = (0, _slash2["default"])(opts.filename);
    if (opts.sourceRoot) {
      opts.sourceRoot = (0, _slash2["default"])(opts.sourceRoot);
    }

    if (opts.moduleId) {
      opts.moduleIds = true;
    }

    opts.basename = _path2["default"].basename(opts.filename, _path2["default"].extname(opts.filename));

    opts.ignore = util.arrayify(opts.ignore, util.regexify);
    opts.only = util.arrayify(opts.only, util.regexify);

    (0, _lodashObjectDefaults2["default"])(opts, {
      moduleRoot: opts.sourceRoot
    });

    (0, _lodashObjectDefaults2["default"])(opts, {
      sourceRoot: opts.moduleRoot
    });

    (0, _lodashObjectDefaults2["default"])(opts, {
      filenameRelative: opts.filename
    });

    (0, _lodashObjectDefaults2["default"])(opts, {
      sourceFileName: opts.filenameRelative,
      sourceMapName: opts.filenameRelative
    });

    //

    if (opts.externalHelpers) {
      this.set("helpersNamespace", t.identifier("babelHelpers"));
    }

    return opts;
  };

  File.prototype.isLoose = function isLoose(key) {
    return (0, _lodashCollectionIncludes2["default"])(this.opts.loose, key);
  };

  File.prototype.buildTransformers = function buildTransformers() {
    var file = this;

    var transformers = this.transformers = {};

    var secondaryStack = [];
    var stack = [];

    // build internal transformers
    for (var key in this.pipeline.transformers) {
      var transformer = this.pipeline.transformers[key];
      var pass = transformers[key] = transformer.buildPass(file);

      if (pass.canTransform()) {
        stack.push(pass);

        if (transformer.metadata.secondPass) {
          secondaryStack.push(pass);
        }

        if (transformer.manipulateOptions) {
          transformer.manipulateOptions(file.opts, file);
        }
      }
    }

    // init plugins!
    var beforePlugins = [];
    var afterPlugins = [];
    var pluginManager = new _pluginManager2["default"]({
      file: this,
      transformers: this.transformers,
      before: beforePlugins,
      after: afterPlugins
    });
    for (var i = 0; i < file.opts.plugins.length; i++) {
      pluginManager.add(file.opts.plugins[i]);
    }
    stack = beforePlugins.concat(stack, afterPlugins);

    // build transformer stack
    this.uncollapsedTransformerStack = stack = stack.concat(secondaryStack);

    // build dependency graph
    var _arr = stack;
    for (var _i = 0; _i < _arr.length; _i++) {
      var pass = _arr[_i];var _arr2 = pass.transformer.dependencies;

      for (var _i2 = 0; _i2 < _arr2.length; _i2++) {
        var dep = _arr2[_i2];
        this.transformerDependencies[dep] = pass.key;
      }
    }

    // collapse stack categories
    this.transformerStack = this.collapseStack(stack);
  };

  File.prototype.collapseStack = function collapseStack(_stack) {
    var stack = [];
    var ignore = [];

    var _arr3 = _stack;
    for (var _i3 = 0; _i3 < _arr3.length; _i3++) {
      var pass = _arr3[_i3];
      // been merged
      if (ignore.indexOf(pass) >= 0) continue;

      var group = pass.transformer.metadata.group;

      // can't merge
      if (!pass.canTransform() || !group) {
        stack.push(pass);
        continue;
      }

      var mergeStack = [];
      var _arr4 = _stack;
      for (var _i4 = 0; _i4 < _arr4.length; _i4++) {
        var _pass = _arr4[_i4];
        if (_pass.transformer.metadata.group === group) {
          mergeStack.push(_pass);
          ignore.push(_pass);
        }
      }

      var visitors = [];
      var _arr5 = mergeStack;
      for (var _i5 = 0; _i5 < _arr5.length; _i5++) {
        var _pass2 = _arr5[_i5];
        visitors.push(_pass2.handlers);
      }
      var visitor = _traversal2["default"].visitors.merge(visitors);
      var mergeTransformer = new _transformer2["default"](group, visitor);
      //console.log(mergeTransformer);
      stack.push(mergeTransformer.buildPass(this));
    }

    return stack;
  };

  File.prototype.set = function set(key, val) {
    return this.data[key] = val;
  };

  File.prototype.setDynamic = function setDynamic(key, fn) {
    this.dynamicData[key] = fn;
  };

  File.prototype.get = function get(key) {
    var data = this.data[key];
    if (data) {
      return data;
    } else {
      var dynamic = this.dynamicData[key];
      if (dynamic) {
        return this.set(key, dynamic());
      }
    }
  };

  File.prototype.resolveModuleSource = function resolveModuleSource(source) {
    var resolveModuleSource = this.opts.resolveModuleSource;
    if (resolveModuleSource) source = resolveModuleSource(source, this.opts.filename);
    return source;
  };

  File.prototype.addImport = function addImport(source, name, type) {
    name = name || source;
    var id = this.dynamicImportIds[name];

    if (!id) {
      source = this.resolveModuleSource(source);
      id = this.dynamicImportIds[name] = this.scope.generateUidIdentifier(name);

      var specifiers = [t.importDefaultSpecifier(id)];
      var declar = t.importDeclaration(specifiers, t.literal(source));
      declar._blockHoist = 3;

      if (type) {
        var modules = this.dynamicImportTypes[type] = this.dynamicImportTypes[type] || [];
        modules.push(declar);
      }

      if (this.transformers["es6.modules"].canTransform()) {
        this.moduleFormatter.importSpecifier(specifiers[0], declar, this.dynamicImports);
        this.moduleFormatter.hasLocalImports = true;
      } else {
        this.dynamicImports.push(declar);
      }
    }

    return id;
  };

  File.prototype.attachAuxiliaryComment = function attachAuxiliaryComment(node) {
    var comment = this.opts.auxiliaryComment;
    if (comment) {
      node.leadingComments = node.leadingComments || [];
      node.leadingComments.push({
        type: "Line",
        value: " " + comment
      });
    }
    return node;
  };

  File.prototype.addHelper = function addHelper(name) {
    var isSolo = (0, _lodashCollectionIncludes2["default"])(File.soloHelpers, name);

    if (!isSolo && !(0, _lodashCollectionIncludes2["default"])(File.helpers, name)) {
      throw new ReferenceError("Unknown helper " + name);
    }

    var program = this.ast.program;

    var declar = this.declarations[name];
    if (declar) return declar;

    this.usedHelpers[name] = true;

    if (!isSolo) {
      var generator = this.get("helperGenerator");
      var runtime = this.get("helpersNamespace");
      if (generator) {
        return generator(name);
      } else if (runtime) {
        var id = t.identifier(t.toIdentifier(name));
        return t.memberExpression(runtime, id);
      }
    }

    var ref = util.template("helper-" + name);

    var uid = this.declarations[name] = this.scope.generateUidIdentifier(name);

    if (t.isFunctionExpression(ref) && !ref.id) {
      ref.body._compact = true;
      ref._generated = true;
      ref.id = uid;
      ref.type = "FunctionDeclaration";
      this.attachAuxiliaryComment(ref);
      this.path.unshiftContainer("body", ref);
    } else {
      ref._compact = true;
      this.scope.push({
        id: uid,
        init: ref,
        unique: true
      });
    }

    return uid;
  };

  File.prototype.errorWithNode = function errorWithNode(node, msg) {
    var Error = arguments[2] === undefined ? SyntaxError : arguments[2];

    var loc = node.loc.start;
    var err = new Error("Line " + loc.line + ": " + msg);
    err.loc = loc;
    return err;
  };

  File.prototype.mergeSourceMap = function mergeSourceMap(map) {
    var opts = this.opts;

    var inputMap = opts.inputSourceMap;

    if (inputMap) {
      map.sources[0] = inputMap.file;

      var inputMapConsumer = new _sourceMap2["default"].SourceMapConsumer(inputMap);
      var outputMapConsumer = new _sourceMap2["default"].SourceMapConsumer(map);
      var outputMapGenerator = _sourceMap2["default"].SourceMapGenerator.fromSourceMap(outputMapConsumer);
      outputMapGenerator.applySourceMap(inputMapConsumer);

      var mergedMap = outputMapGenerator.toJSON();
      mergedMap.sources = inputMap.sources;
      mergedMap.file = inputMap.file;
      return mergedMap;
    }

    return map;
  };

  File.prototype.getModuleFormatter = function getModuleFormatter(type) {
    var ModuleFormatter = (0, _lodashLangIsFunction2["default"])(type) ? type : _modules2["default"][type];

    if (!ModuleFormatter) {
      var loc = util.resolveRelative(type);
      if (loc) ModuleFormatter = require(loc);
    }

    if (!ModuleFormatter) {
      throw new ReferenceError("Unknown module formatter type " + JSON.stringify(type));
    }

    return new ModuleFormatter(this);
  };

  File.prototype.parse = function parse(code) {
    var opts = this.opts;

    //

    var parseOpts = {
      highlightCode: opts.highlightCode,
      nonStandard: opts.nonStandard,
      filename: opts.filename,
      plugins: {}
    };

    var features = parseOpts.features = {};
    for (var key in this.transformers) {
      var transformer = this.transformers[key];
      features[key] = transformer.canTransform();
    }

    parseOpts.looseModules = this.isLoose("es6.modules");
    parseOpts.strictMode = features.strict;
    parseOpts.sourceType = "module";

    this.log.debug("Parse start");
    var tree = (0, _helpersParse2["default"])(code, parseOpts);
    this.log.debug("Parse stop");
    return tree;
  };

  File.prototype._addAst = function _addAst(ast) {
    this.path = _traversalPath2["default"].get(null, ast, ast, "program", this).setContext(null, this);
    this.scope = this.path.scope;
    this.ast = ast;
  };

  File.prototype.addAst = function addAst(ast) {
    this.log.debug("Start set AST");
    this._addAst(ast);
    this.log.debug("End set AST");

    this.log.debug("Start module formatter init");
    var modFormatter = this.moduleFormatter = this.getModuleFormatter(this.opts.modules);
    if (modFormatter.init && this.transformers["es6.modules"].canTransform()) {
      modFormatter.init();
    }
    this.log.debug("End module formatter init");

    this.call("pre");
    var _arr6 = this.transformerStack;
    for (var _i6 = 0; _i6 < _arr6.length; _i6++) {
      var pass = _arr6[_i6];
      pass.transform();
    }
    this.call("post");
  };

  File.prototype.wrap = function wrap(code, callback) {
    code = code + "";

    try {
      if (this.shouldIgnore()) {
        return {
          metadata: this.metadata,
          ignored: true,
          code: code,
          map: null,
          ast: null
        };
      }

      callback();

      return this.generate();
    } catch (err) {
      if (err._babel) {
        throw err;
      } else {
        err._babel = true;
      }

      var message = err.message = "" + this.opts.filename + ": " + err.message;

      var loc = err.loc;
      if (loc) {
        err.codeFrame = (0, _helpersCodeFrame2["default"])(code, loc.line, loc.column + 1, this.opts);
        message += "\n" + err.codeFrame;
      }

      if (err.stack) {
        var newStack = err.stack.replace(err.message, message);
        try {
          err.stack = newStack;
        } catch (e) {}
      }

      throw err;
    }
  };

  File.prototype.addCode = function addCode(code, parseCode) {
    code = (code || "") + "";
    code = this.parseInputSourceMap(code);
    this.code = code;

    if (parseCode) {
      this.parseShebang();
      this.addAst(this.parse(this.code));
    }
  };

  File.prototype.shouldIgnore = function shouldIgnore() {
    var opts = this.opts;
    return util.shouldIgnore(opts.filename, opts.ignore, opts.only);
  };

  File.prototype.call = function call(key) {
    var _arr7 = this.uncollapsedTransformerStack;

    for (var _i7 = 0; _i7 < _arr7.length; _i7++) {
      var pass = _arr7[_i7];
      var fn = pass.transformer[key];
      if (fn) fn(this);
    }
  };

  File.prototype.parseInputSourceMap = function parseInputSourceMap(code) {
    var opts = this.opts;

    if (opts.inputSourceMap !== false) {
      var inputMap = _convertSourceMap2["default"].fromSource(code);
      if (inputMap) {
        opts.inputSourceMap = inputMap.toObject();
        code = _convertSourceMap2["default"].removeComments(code);
      }
    }

    return code;
  };

  File.prototype.parseShebang = function parseShebang() {
    var shebangMatch = _shebangRegex2["default"].exec(this.code);
    if (shebangMatch) {
      this.shebang = shebangMatch[0];
      this.code = this.code.replace(_shebangRegex2["default"], "");
    }
  };

  File.prototype.generate = function generate() {
    var opts = this.opts;
    var ast = this.ast;

    var result = {
      metadata: this.metadata,
      code: "",
      map: null,
      ast: null
    };

    if (this.opts.metadataUsedHelpers) {
      result.metadata.usedHelpers = Object.keys(this.usedHelpers);
    }

    if (opts.ast) result.ast = ast;
    if (!opts.code) return result;

    this.log.debug("Generation start");

    var _result = (0, _generation2["default"])(ast, opts, this.code);
    result.code = _result.code;
    result.map = _result.map;

    this.log.debug("Generation end");

    if (this.shebang) {
      // add back shebang
      result.code = "" + this.shebang + "\n" + result.code;
    }

    if (result.map) {
      result.map = this.mergeSourceMap(result.map);
    }

    if (opts.sourceMaps === "inline" || opts.sourceMaps === "both") {
      result.code += "\n" + _convertSourceMap2["default"].fromObject(result.map).toComment();
    }

    if (opts.sourceMaps === "inline") {
      result.map = null;
    }

    return result;
  };

  _createClass(File, null, [{
    key: "helpers",
    value: ["inherits", "defaults", "create-class", "create-decorated-class", "create-decorated-object", "define-decorated-property-descriptor", "tagged-template-literal", "tagged-template-literal-loose", "to-array", "to-consumable-array", "sliced-to-array", "sliced-to-array-loose", "object-without-properties", "has-own", "slice", "bind", "define-property", "async-to-generator", "interop-require-wildcard", "interop-require-default", "typeof", "extends", "get", "set", "class-call-check", "object-destructuring-empty", "temporal-undefined", "temporal-assert-defined", "self-global", "default-props", "instanceof",

    // legacy
    "interop-require"],
    enumerable: true
  }, {
    key: "soloHelpers",
    value: [],
    enumerable: true
  }, {
    key: "options",
    value: require("./options"),
    enumerable: true
  }]);

  return File;
})();

exports["default"] = File;
module.exports = exports["default"];

// `err.stack` may be a readonly property in some environments
}).call(this,require('_process'))
},{"../../api/node":20,"../../generation":35,"../../helpers/code-frame":42,"../../helpers/merge":43,"../../helpers/parse":46,"../../tools/resolve-rc":51,"../../traversal":157,"../../traversal/path":161,"../../traversal/scope":164,"../../types":169,"../../util":173,"../modules":79,"../transformer":85,"./../index":71,"./logger":53,"./option-parsers":54,"./options":55,"./plugin-manager":56,"_process":200,"convert-source-map":225,"lodash/collection/includes":332,"lodash/lang/clone":402,"lodash/lang/isFunction":408,"lodash/object/assign":417,"lodash/object/defaults":418,"path":199,"path-is-absolute":434,"shebang-regex":481,"slash":482,"source-map":483}],53:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var _debugNode = require("debug/node");

var _debugNode2 = _interopRequireDefault(_debugNode);

var verboseDebug = (0, _debugNode2["default"])("babel:verbose");
var generalDebug = (0, _debugNode2["default"])("babel");

var Logger = (function () {
  function Logger(file, filename) {
    _classCallCheck(this, Logger);

    this.filename = filename;
    this.file = file;
  }

  Logger.prototype._buildMessage = function _buildMessage(msg) {
    var parts = "[BABEL] " + this.filename;
    if (msg) parts += ": " + msg;
    return parts;
  };

  Logger.prototype.error = function error(msg) {
    var Constructor = arguments[1] === undefined ? Error : arguments[1];

    throw new Constructor(this._buildMessage(msg));
  };

  Logger.prototype.deprecate = function deprecate(msg) {
    if (!this.file.opts.suppressDeprecationMessages) {
      console.error(this._buildMessage(msg));
    }
  };

  Logger.prototype.verbose = function verbose(msg) {
    if (verboseDebug.enabled) verboseDebug(this._buildMessage(msg));
  };

  Logger.prototype.debug = function debug(msg) {
    if (generalDebug.enabled) generalDebug(this._buildMessage(msg));
  };

  Logger.prototype.deopt = function deopt(node, msg) {
    this.debug(msg);
  };

  return Logger;
})();

exports["default"] = Logger;
module.exports = exports["default"];
},{"debug/node":304}],54:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.transformerList = transformerList;
exports.number = number;
exports.boolean = boolean;
exports.booleanString = booleanString;
exports.list = list;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _util = require("../../util");

var util = _interopRequireWildcard(_util);

function transformerList(key, val, pipeline) {
  val = util.arrayify(val);

  if (val.indexOf("all") >= 0 || val.indexOf(true) >= 0) {
    val = Object.keys(pipeline.transformers);
  }

  return pipeline._ensureTransformerNames(key, val);
}

function number(key, val) {
  return +val;
}

function boolean(key, val) {
  return !!val;
}

function booleanString(key, val) {
  return util.booleanify(val);
}

function list(key, val) {
  return util.list(val);
}
},{"../../util":173}],55:[function(require,module,exports){
module.exports={
  "filename": {
    "type": "string",
    "description": "filename to use when reading from stdin - this will be used in source-maps, errors etc",
    "default": "unknown",
    "shorthand": "f"
  },

  "filenameRelative": {
    "hidden": true,
    "type": "string"
  },

  "inputSourceMap": {
    "hidden": true
  },

  "extra": {
    "hidden": true,
    "default": {}
  },

  "env": {
    "hidden": true,
    "default": {}
  },

  "moduleId": {
    "description": "specify a custom name for module ids",
    "type": "string"
  },

  "getModuleId": {
    "hidden": true
  },

  "retainLines": {
    "type": "boolean",
    "default": false,
    "description": "retain line numbers - will result in really ugly code"
  },

  "nonStandard": {
    "type": "boolean",
    "default": true,
    "description": "enable support for JSX and Flow"
  },

  "experimental": {
    "deprecated": "use `--stage 0`/`{ stage: 0 }` instead"
  },

  "highlightCode": {
    "description": "ANSI syntax highlight code frames",
    "type": "boolean",
    "default": true
  },

  "suppressDeprecationMessages": {
    "type": "boolean",
    "default": false,
    "hidden": true
  },

  "resolveModuleSource": {
    "hidden": true
  },

  "stage": {
    "description": "ECMAScript proposal stage version to allow [0-4]",
    "shorthand": "e",
    "type": "number",
    "default": 2
  },

  "blacklist": {
    "type": "transformerList",
    "description": "blacklist of transformers to NOT use",
    "shorthand": "b"
  },

  "whitelist": {
    "type": "transformerList",
    "optional": true,
    "description": "whitelist of transformers to ONLY use",
    "shorthand": "l"
  },

  "optional": {
    "type": "transformerList",
    "description": "list of optional transformers to enable"
  },

  "modules": {
    "type": "string",
    "description": "module formatter type to use [common]",
    "default": "common",
    "shorthand": "m"
  },

  "moduleIds": {
    "type": "boolean",
    "default": false,
    "shorthand": "M",
    "description": "insert an explicit id for modules"
  },

  "loose": {
    "type": "transformerList",
    "description": "list of transformers to enable loose mode ON",
    "shorthand": "L"
  },

  "jsxPragma": {
    "type": "string",
    "description": "custom pragma to use with JSX (same functionality as @jsx comments)",
    "default": "React.createElement",
    "shorthand": "P"
  },

  "plugins": {
    "type": "list",
    "description": ""
  },

  "ignore": {
    "type": "list",
    "description": "list of glob paths to **not** compile"
  },

  "only": {
    "type": "list",
    "description": "list of glob paths to **only** compile"
  },

  "code": {
    "hidden": true,
    "default": true,
    "type": "boolean"
  },

  "ast": {
    "hidden": true,
    "default": true,
    "type": "boolean"
  },

  "comments": {
    "type": "boolean",
    "default": true,
    "description": "output comments in generated output"
  },

  "compact": {
    "type": "booleanString",
    "default": "auto",
    "description": "do not include superfluous whitespace characters and line terminators [true|false|auto]"
  },

  "keepModuleIdExtensions": {
    "type": "boolean",
    "description": "keep extensions when generating module ids",
    "default": false,
    "shorthand": "k"
  },

  "auxiliaryComment": {
    "type": "string",
    "default": "",
    "shorthand": "a",
    "description": "attach a comment before all helper declarations and auxiliary code"
  },

  "externalHelpers": {
    "type": "boolean",
    "default": false,
    "shorthand": "r",
    "description": "uses a reference to `babelHelpers` instead of placing helpers at the top of your code."
  },

  "metadataUsedHelpers": {
    "type": "boolean",
    "default": false,
    "hidden": true
  },

  "sourceMap": {
    "alias": "sourceMaps",
    "hidden": true
  },

  "sourceMaps": {
    "type": "booleanString",
    "description": "[true|false|inline]",
    "default": false,
    "shorthand": "s"
  },

  "sourceMapName": {
    "type": "string",
    "description": "set `file` on returned source map"
  },

  "sourceFileName": {
    "type": "string",
    "description": "set `sources[0]` on returned source map"
  },

  "sourceRoot": {
    "type": "string",
    "description": "the root from which all sources are relative"
  },

  "moduleRoot": {
    "type": "string",
    "description": "optional prefix for the AMD module formatter that will be prepend to the filename on module definitions"
  },

  "breakConfig": {
    "type": "boolean",
    "default": false,
    "hidden": true,
    "description": "stop trying to load .babelrc files"
  },

  "babelrc": {
    "hidden": true,
    "description": "do not load the same .babelrc file twice"
  }
}

},{}],56:[function(require,module,exports){
"use strict";

exports.__esModule = true;

var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var _apiNode = require("../../api/node");

var node = _interopRequireWildcard(_apiNode);

var _messages = require("../../messages");

var messages = _interopRequireWildcard(_messages);

var _util = require("../../util");

var util = _interopRequireWildcard(_util);

var PluginManager = (function () {
  function PluginManager() {
    var _ref = arguments[0] === undefined ? { transformers: {}, before: [], after: [] } : arguments[0];

    var file = _ref.file;
    var transformers = _ref.transformers;
    var before = _ref.before;
    var after = _ref.after;

    _classCallCheck(this, PluginManager);

    this.transformers = transformers;
    this.file = file;
    this.before = before;
    this.after = after;
  }

  PluginManager.memoisePluginContainer = function memoisePluginContainer(fn) {
    for (var i = 0; i < PluginManager.memoisedPlugins.length; i++) {
      var plugin = PluginManager.memoisedPlugins[i];
      if (plugin.container === fn) return plugin.transformer;
    }

    var transformer = fn(node);
    PluginManager.memoisedPlugins.push({
      container: fn,
      transformer: transformer
    });
    return transformer;
  };

  PluginManager.prototype.subnormaliseString = function subnormaliseString(name, position) {
    // this is a plugin in the form of "foobar" or "foobar:after"
    // where the optional colon is the delimiter for plugin position in the transformer stack

    var match = name.match(/^(.*?):(after|before)$/);
    if (match) {
      ;

      var _temp = match;
      name = _temp[1];
      position = _temp[2];
      _temp;
    }var loc = util.resolveRelative(name) || util.resolveRelative("babel-plugin-" + name);
    if (loc) {
      return {
        position: position,
        plugin: require(loc)
      };
    } else {
      throw new ReferenceError(messages.get("pluginUnknown", name));
    }
  };

  PluginManager.prototype.validate = function validate(name, plugin) {
    // validate transformer key
    var key = plugin.key;
    if (this.transformers[key]) {
      throw new ReferenceError(messages.get("pluginKeyCollision", key));
    }

    // validate Transformer instance
    if (!plugin.buildPass || plugin.constructor.name !== "Transformer") {
      throw new TypeError(messages.get("pluginNotTransformer", name));
    }

    // register as a plugin
    plugin.metadata.plugin = true;
  };

  PluginManager.prototype.add = function add(name) {
    var position;
    var plugin;

    if (name) {
      if (typeof name === "object" && name.transformer) {
        var _temp2 = name;
        plugin = _temp2.transformer;
        position = _temp2.position;
        _temp2;
      } else if (typeof name !== "string") {
        // not a string so we'll just assume that it's a direct Transformer instance, if not then
        // the checks later on will complain
        plugin = name;
      }

      if (typeof name === "string") {
        var _temp3 = this.subnormaliseString(name, position);

        plugin = _temp3.plugin;
        position = _temp3.position;
        _temp3;
      }
    } else {
      throw new TypeError(messages.get("pluginIllegalKind", typeof name, name));
    }

    // default position
    position = position || "before";

    // validate position
    if (PluginManager.positions.indexOf(position) < 0) {
      throw new TypeError(messages.get("pluginIllegalPosition", position, name));
    }

    // allow plugin containers to be specified so they don't have to manually require
    if (typeof plugin === "function") {
      plugin = PluginManager.memoisePluginContainer(plugin);
    }

    //
    this.validate(name, plugin);

    // build!
    var pass = this.transformers[plugin.key] = plugin.buildPass(this.file);
    if (pass.canTransform()) {
      var stack = position === "before" ? this.before : this.after;
      stack.push(pass);
    }
  };

  _createClass(PluginManager, null, [{
    key: "memoisedPlugins",
    value: [],
    enumerable: true
  }, {
    key: "positions",
    value: ["before", "after"],
    enumerable: true
  }]);

  return PluginManager;
})();

exports["default"] = PluginManager;
module.exports = exports["default"];
},{"../../api/node":20,"../../messages":47,"../../util":173}],57:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _explodeAssignableExpression = require("./explode-assignable-expression");

var _explodeAssignableExpression2 = _interopRequireDefault(_explodeAssignableExpression);

var _types = require("../../types");

var t = _interopRequireWildcard(_types);

exports["default"] = function (opts) {
  var exports = {};

  var isAssignment = function isAssignment(node) {
    return node.operator === opts.operator + "=";
  };

  var buildAssignment = function buildAssignment(left, right) {
    return t.assignmentExpression("=", left, right);
  };

  exports.ExpressionStatement = function (node, parent, scope, file) {
    // hit the `AssignmentExpression` one below
    if (this.isCompletionRecord()) return;

    var expr = node.expression;
    if (!isAssignment(expr)) return;

    var nodes = [];
    var exploded = (0, _explodeAssignableExpression2["default"])(expr.left, nodes, file, scope, true);

    nodes.push(t.expressionStatement(buildAssignment(exploded.ref, opts.build(exploded.uid, expr.right))));

    return nodes;
  };

  exports.AssignmentExpression = function (node, parent, scope, file) {
    if (!isAssignment(node)) return;

    var nodes = [];
    var exploded = (0, _explodeAssignableExpression2["default"])(node.left, nodes, file, scope);
    nodes.push(buildAssignment(exploded.ref, opts.build(exploded.uid, node.right)));
    return nodes;
  };

  exports.BinaryExpression = function (node) {
    if (node.operator !== opts.operator) return;
    return opts.build(node.left, node.right);
  };

  return exports;
};

;
module.exports = exports["default"];
},{"../../types":169,"./explode-assignable-expression":62}],58:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports["default"] = build;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _types = require("../../types");

var t = _interopRequireWildcard(_types);

function build(node, buildBody) {
  var self = node.blocks.shift();
  if (!self) return;

  var child = build(node, buildBody);
  if (!child) {
    // last item
    child = buildBody();

    // add a filter as this is our final stop
    if (node.filter) {
      child = t.ifStatement(node.filter, t.blockStatement([child]));
    }
  }

  return t.forOfStatement(t.variableDeclaration("let", [t.variableDeclarator(self.left)]), self.right, t.blockStatement([child]));
}

module.exports = exports["default"];
},{"../../types":169}],59:[function(require,module,exports){
// Based upon the excellent jsx-transpiler by Ingvar Stepanyan (RReverser)
// https://github.com/RReverser/jsx-transpiler

// jsx

"use strict";

exports.__esModule = true;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _lodashLangIsString = require("lodash/lang/isString");

var _lodashLangIsString2 = _interopRequireDefault(_lodashLangIsString);

var _messages = require("../../messages");

var messages = _interopRequireWildcard(_messages);

var _esutils = require("esutils");

var _esutils2 = _interopRequireDefault(_esutils);

var _react = require("./react");

var react = _interopRequireWildcard(_react);

var _types = require("../../types");

var t = _interopRequireWildcard(_types);

exports["default"] = function (exports, opts) {
  exports.JSXIdentifier = function (node, parent) {
    if (node.name === "this" && this.isReferenced()) {
      return t.thisExpression();
    } else if (_esutils2["default"].keyword.isIdentifierNameES6(node.name)) {
      node.type = "Identifier";
    } else {
      return t.literal(node.name);
    }
  };

  exports.JSXNamespacedName = function (node, parent, scope, file) {
    throw this.errorWithNode(messages.get("JSXNamespacedTags"));
  };

  exports.JSXMemberExpression = {
    exit: function exit(node) {
      node.computed = t.isLiteral(node.property);
      node.type = "MemberExpression";
    }
  };

  exports.JSXExpressionContainer = function (node) {
    return node.expression;
  };

  exports.JSXAttribute = {
    enter: function enter(node) {
      var value = node.value;
      if (t.isLiteral(value) && (0, _lodashLangIsString2["default"])(value.value)) {
        value.value = value.value.replace(/\n\s+/g, " ");
      }
    },

    exit: function exit(node) {
      var value = node.value || t.literal(true);
      return t.inherits(t.property("init", node.name, value), node);
    }
  };

  exports.JSXOpeningElement = {
    exit: function exit(node, parent, scope, file) {
      parent.children = react.buildChildren(parent);

      var tagExpr = node.name;
      var args = [];

      var tagName;
      if (t.isIdentifier(tagExpr)) {
        tagName = tagExpr.name;
      } else if (t.isLiteral(tagExpr)) {
        tagName = tagExpr.value;
      }

      var state = {
        tagExpr: tagExpr,
        tagName: tagName,
        args: args
      };

      if (opts.pre) {
        opts.pre(state, file);
      }

      var attribs = node.attributes;
      if (attribs.length) {
        attribs = buildJSXOpeningElementAttributes(attribs, file);
      } else {
        attribs = t.literal(null);
      }

      args.push(attribs);

      if (opts.post) {
        opts.post(state, file);
      }

      return state.call || t.callExpression(state.callee, args);
    }
  };

  /**
   * The logic for this is quite terse. It's because we need to
   * support spread elements. We loop over all attributes,
   * breaking on spreads, we then push a new object containg
   * all prior attributes to an array for later processing.
   */

  var buildJSXOpeningElementAttributes = function buildJSXOpeningElementAttributes(attribs, file) {
    var _props = [];
    var objs = [];

    var pushProps = function pushProps() {
      if (!_props.length) return;

      objs.push(t.objectExpression(_props));
      _props = [];
    };

    while (attribs.length) {
      var prop = attribs.shift();
      if (t.isJSXSpreadAttribute(prop)) {
        pushProps();
        objs.push(prop.argument);
      } else {
        _props.push(prop);
      }
    }

    pushProps();

    if (objs.length === 1) {
      // only one object
      attribs = objs[0];
    } else {
      // looks like we have multiple objects
      if (!t.isObjectExpression(objs[0])) {
        objs.unshift(t.objectExpression([]));
      }

      // spread it
      attribs = t.callExpression(file.addHelper("extends"), objs);
    }

    return attribs;
  };

  exports.JSXElement = {
    exit: function exit(node) {
      var callExpr = node.openingElement;

      callExpr.arguments = callExpr.arguments.concat(node.children);

      if (callExpr.arguments.length >= 3) {
        callExpr._prettyCall = true;
      }

      return t.inherits(callExpr, node);
    }
  };

  // display names

  var addDisplayName = function addDisplayName(id, call) {
    var props = call.arguments[0].properties;
    var safe = true;

    for (var i = 0; i < props.length; i++) {
      var prop = props[i];
      if (t.isIdentifier(prop.key, { name: "displayName" })) {
        safe = false;
        break;
      }
    }

    if (safe) {
      props.unshift(t.property("init", t.identifier("displayName"), t.literal(id)));
    }
  };

  exports.ExportDefaultDeclaration = function (node, parent, scope, file) {
    if (react.isCreateClass(node.declaration)) {
      addDisplayName(file.opts.basename, node.declaration);
    }
  };

  exports.AssignmentExpression = exports.Property = exports.VariableDeclarator = function (node) {
    var left, right;

    if (t.isAssignmentExpression(node)) {
      left = node.left;
      right = node.right;
    } else if (t.isProperty(node)) {
      left = node.key;
      right = node.value;
    } else if (t.isVariableDeclarator(node)) {
      left = node.id;
      right = node.init;
    }

    if (t.isMemberExpression(left)) {
      left = left.property;
    }

    if (t.isIdentifier(left) && react.isCreateClass(right)) {
      addDisplayName(left.name, right);
    }
  };
};

;
module.exports = exports["default"];
},{"../../messages":47,"../../types":169,"./react":66,"esutils":314,"lodash/lang/isString":414}],60:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _traversal = require("../../traversal");

var _traversal2 = _interopRequireDefault(_traversal);

var _types = require("../../types");

var t = _interopRequireWildcard(_types);

var visitor = {
  enter: function enter(node, parent, scope, state) {
    if (this.isThisExpression() || this.isReferencedIdentifier({ name: "arguments" })) {
      state.found = true;
      this.stop();
    }

    if (this.isFunction()) {
      this.skip();
    }
  }
};

exports["default"] = function (node, scope) {
  var container = t.functionExpression(null, [], node.body, node.generator, node.async);

  var callee = container;
  var args = [];

  var state = { found: false };
  scope.traverse(node, visitor, state);
  if (state.found) {
    callee = t.memberExpression(container, t.identifier("apply"));
    args = [t.thisExpression(), t.identifier("arguments")];
  }

  var call = t.callExpression(callee, args);
  if (node.generator) call = t.yieldExpression(call, true);

  return t.returnStatement(call);
};

module.exports = exports["default"];
},{"../../traversal":157,"../../types":169}],61:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.push = push;
exports.hasComputed = hasComputed;
exports.toComputedObjectFromClass = toComputedObjectFromClass;
exports.toClassObject = toClassObject;
exports.toDefineObject = toDefineObject;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _lodashLangCloneDeep = require("lodash/lang/cloneDeep");

var _lodashLangCloneDeep2 = _interopRequireDefault(_lodashLangCloneDeep);

var _traversal = require("../../traversal");

var _traversal2 = _interopRequireDefault(_traversal);

var _lodashCollectionEach = require("lodash/collection/each");

var _lodashCollectionEach2 = _interopRequireDefault(_lodashCollectionEach);

var _lodashObjectHas = require("lodash/object/has");

var _lodashObjectHas2 = _interopRequireDefault(_lodashObjectHas);

var _types = require("../../types");

var t = _interopRequireWildcard(_types);

function push(mutatorMap, node, kind, file) {
  var alias = t.toKeyAlias(node);

  //

  var map = {};
  if ((0, _lodashObjectHas2["default"])(mutatorMap, alias)) map = mutatorMap[alias];
  mutatorMap[alias] = map;

  //

  map._inherits = map._inherits || [];
  map._inherits.push(node);

  map._key = node.key;

  if (node.computed) {
    map._computed = true;
  }

  if (node.decorators) {
    var decorators = map.decorators = map.decorators || t.arrayExpression([]);
    decorators.elements = decorators.elements.concat(node.decorators.map(function (dec) {
      return dec.expression;
    }).reverse());
  }

  if (map.value || map.initializer) {
    throw file.errorWithNode(node, "Key conflict with sibling node");
  }

  if (node.value) {
    if (node.kind === "init") kind = "value";
    if (node.kind === "get") kind = "get";
    if (node.kind === "set") kind = "set";

    t.inheritsComments(node.value, node);
    map[kind] = node.value;
  }

  return map;
}

function hasComputed(mutatorMap) {
  for (var key in mutatorMap) {
    if (mutatorMap[key]._computed) {
      return true;
    }
  }
  return false;
}

function toComputedObjectFromClass(obj) {
  var objExpr = t.arrayExpression([]);

  for (var i = 0; i < obj.properties.length; i++) {
    var prop = obj.properties[i];
    var val = prop.value;
    val.properties.unshift(t.property("init", t.identifier("key"), t.toComputedKey(prop)));
    objExpr.elements.push(val);
  }

  return objExpr;
}

function toClassObject(mutatorMap) {
  var objExpr = t.objectExpression([]);

  (0, _lodashCollectionEach2["default"])(mutatorMap, function (map) {
    var mapNode = t.objectExpression([]);

    var propNode = t.property("init", map._key, mapNode, map._computed);

    (0, _lodashCollectionEach2["default"])(map, function (node, key) {
      if (key[0] === "_") return;

      var inheritNode = node;
      if (t.isMethodDefinition(node) || t.isClassProperty(node)) node = node.value;

      var prop = t.property("init", t.identifier(key), node);
      t.inheritsComments(prop, inheritNode);
      t.removeComments(inheritNode);

      mapNode.properties.push(prop);
    });

    objExpr.properties.push(propNode);
  });

  return objExpr;
}

function toDefineObject(mutatorMap) {
  (0, _lodashCollectionEach2["default"])(mutatorMap, function (map) {
    if (map.value) map.writable = t.literal(true);
    map.configurable = t.literal(true);
    map.enumerable = t.literal(true);
  });

  return toClassObject(mutatorMap);
}
},{"../../traversal":157,"../../types":169,"lodash/collection/each":330,"lodash/lang/cloneDeep":403,"lodash/object/has":420}],62:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _types = require("../../types");

var t = _interopRequireWildcard(_types);

var getObjRef = function getObjRef(node, nodes, file, scope) {
  var ref;
  if (t.isIdentifier(node)) {
    if (scope.hasBinding(node.name)) {
      // this variable is declared in scope so we can be 100% sure
      // that evaluating it multiple times wont trigger a getter
      // or something else
      return node;
    } else {
      // could possibly trigger a getter so we need to only evaluate
      // it once
      ref = node;
    }
  } else if (t.isMemberExpression(node)) {
    ref = node.object;

    if (t.isIdentifier(ref) && scope.hasGlobal(ref.name)) {
      // the object reference that we need to save is locally declared
      // so as per the previous comment we can be 100% sure evaluating
      // it multiple times will be safe
      return ref;
    }
  } else {
    throw new Error("We can't explode this node type " + node.type);
  }

  var temp = scope.generateUidIdentifierBasedOnNode(ref);
  nodes.push(t.variableDeclaration("var", [t.variableDeclarator(temp, ref)]));
  return temp;
};

var getPropRef = function getPropRef(node, nodes, file, scope) {
  var prop = node.property;
  var key = t.toComputedKey(node, prop);
  if (t.isLiteral(key)) return key;

  var temp = scope.generateUidIdentifierBasedOnNode(prop);
  nodes.push(t.variableDeclaration("var", [t.variableDeclarator(temp, prop)]));
  return temp;
};

exports["default"] = function (node, nodes, file, scope, allowedSingleIdent) {
  var obj;
  if (t.isIdentifier(node) && allowedSingleIdent) {
    obj = node;
  } else {
    obj = getObjRef(node, nodes, file, scope);
  }

  var ref, uid;

  if (t.isIdentifier(node)) {
    ref = node;
    uid = obj;
  } else {
    var prop = getPropRef(node, nodes, file, scope);
    var computed = node.computed || t.isLiteral(prop);
    uid = ref = t.memberExpression(obj, prop, computed);
  }

  return {
    uid: uid,
    ref: ref
  };
};

;
module.exports = exports["default"];
},{"../../types":169}],63:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _types = require("../../types");

var t = _interopRequireWildcard(_types);

exports["default"] = function (node) {
  var lastNonDefault = 0;
  for (var i = 0; i < node.params.length; i++) {
    if (!t.isAssignmentPattern(node.params[i])) lastNonDefault = i + 1;
  }
  return lastNonDefault;
};

;
module.exports = exports["default"];
},{"../../types":169}],64:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _types = require("../../types");

var t = _interopRequireWildcard(_types);

exports["default"] = function (decorators, scope) {
  for (var i = 0; i < decorators.length; i++) {
    var decorator = decorators[i];
    var expression = decorator.expression;
    if (!t.isMemberExpression(expression)) continue;

    var temp = scope.maybeGenerateMemoised(expression.object);
    var ref;

    var nodes = [];

    if (temp) {
      ref = temp;
      nodes.push(t.assignmentExpression("=", temp, expression.object));
    } else {
      ref = expression.object;
    }

    nodes.push(t.callExpression(t.memberExpression(t.memberExpression(ref, expression.property, expression.computed), t.identifier("bind")), [ref]));

    if (nodes.length === 1) {
      decorator.expression = nodes[0];
    } else {
      decorator.expression = t.sequenceExpression(nodes);
    }
  }

  return decorators;
};

module.exports = exports["default"];
},{"../../types":169}],65:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.custom = custom;
exports.property = property;
exports.bare = bare;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _getFunctionArity = require("./get-function-arity");

var _getFunctionArity2 = _interopRequireDefault(_getFunctionArity);

var _util = require("../../util");

var util = _interopRequireWildcard(_util);

var _types = require("../../types");

var t = _interopRequireWildcard(_types);

var visitor = {
  enter: function enter(node, parent, scope, state) {
    // check if this node is a referenced identifier that matches the same as our
    // function id
    if (!this.isReferencedIdentifier({ name: state.name })) return;

    // check that we don't have a local variable declared as that removes the need
    // for the wrapper
    var localDeclar = scope.getBindingIdentifier(state.name);
    if (localDeclar !== state.outerDeclar) return;

    state.selfReference = true;
    this.stop();
  }
};

var wrap = function wrap(state, method, id, scope) {
  if (state.selfReference) {
    if (scope.hasBinding(id.name)) {
      // we can just munge the local binding
      scope.rename(id.name);
    } else {
      // need to add a wrapper since we can't change the references
      var templateName = "property-method-assignment-wrapper";
      if (method.generator) templateName += "-generator";
      var template = util.template(templateName, {
        FUNCTION: method,
        FUNCTION_ID: id,
        FUNCTION_KEY: scope.generateUidIdentifier(id.name)
      });
      template.callee._skipModulesRemap = true;

      // shim in dummy params to retain function arity, if you try to read the
      // source then you'll get the original since it's proxied so it's all good
      var params = template.callee.body.body[0].params;
      for (var i = 0, len = (0, _getFunctionArity2["default"])(method); i < len; i++) {
        params.push(scope.generateUidIdentifier("x"));
      }

      return template;
    }
  }

  method.id = id;
};

var visit = function visit(node, name, scope) {
  var state = {
    selfAssignment: false,
    selfReference: false,
    outerDeclar: scope.getBindingIdentifier(name),
    references: [],
    name: name
  };

  // check to see if we have a local binding of the id we're setting inside of
  // the function, this is important as there are caveats associated

  var bindingInfo = scope.getOwnBindingInfo(name);

  if (bindingInfo) {
    if (bindingInfo.kind === "param") {
      // safari will blow up in strict mode with code like:
      //
      //   var t = function t(t) {};
      //
      // with the error:
      //
      //   Cannot declare a parameter named 't' as it shadows the name of a
      //   strict mode function.
      //
      // this isn't to the spec and they've invented this behaviour which is
      // **extremely** annoying so we avoid setting the name if it has a param
      // with the same id
      state.selfReference = true;
    } else {}
  } else if (state.outerDeclar || scope.hasGlobal(name)) {
    scope.traverse(node, visitor, state);
  }

  return state;
};

function custom(node, id, scope) {
  var state = visit(node, id.name, scope);
  return wrap(state, node, id, scope);
}

function property(node, file, scope) {
  var key = t.toComputedKey(node, node.key);
  if (!t.isLiteral(key)) return; // we can't set a function id with this

  var name = t.toIdentifier(key.value);
  if (name === "eval" || name === "arguments") name = "_" + name;
  var id = t.identifier(name);

  var method = node.value;
  var state = visit(method, name, scope);
  node.value = wrap(state, method, id, scope) || method;
}

function bare(node, parent, scope) {
  // has an `id` so we don't need to infer one
  if (node.id) return;

  var id;
  if (t.isProperty(parent) && parent.kind === "init" && (!parent.computed || t.isLiteral(parent.key))) {
    // { foo() {} };
    id = parent.key;
  } else if (t.isVariableDeclarator(parent)) {
    // var foo = function () {};
    id = parent.id;

    if (t.isIdentifier(id)) {
      var bindingInfo = scope.parent.getBinding(id.name);
      if (bindingInfo && bindingInfo.constant && scope.getBinding(id.name) === bindingInfo) {
        // always going to reference this method
        node.id = id;
        return;
      }
    }
  } else {
    return;
  }

  var name;
  if (t.isLiteral(id)) {
    name = id.value;
  } else if (t.isIdentifier(id)) {
    name = id.name;
  } else {
    return;
  }

  name = t.toIdentifier(name);
  id = t.identifier(name);

  var state = visit(node, name, scope);
  return wrap(state, node, id, scope);
}

// otherwise it's defined somewhere in scope like:
//
//   var t = function () {
//     var t = 2;
//   };
//
// so we can safely just set the id and move along as it shadows the
// bound function id
},{"../../types":169,"../../util":173,"./get-function-arity":63}],66:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.isCreateClass = isCreateClass;
exports.isCompatTag = isCompatTag;
exports.buildChildren = buildChildren;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _lodashLangIsString = require("lodash/lang/isString");

var _lodashLangIsString2 = _interopRequireDefault(_lodashLangIsString);

var _types = require("../../types");

var t = _interopRequireWildcard(_types);

var isCreateClassCallExpression = t.buildMatchMemberExpression("React.createClass");

function isCreateClass(node) {
  if (!node || !t.isCallExpression(node)) return false;

  // not React.createClass call member object
  if (!isCreateClassCallExpression(node.callee)) return false;

  // no call arguments
  var args = node.arguments;
  if (args.length !== 1) return false;

  // first node arg is not an object
  var first = args[0];
  if (!t.isObjectExpression(first)) return false;

  return true;
}

var isReactComponent = t.buildMatchMemberExpression("React.Component");

exports.isReactComponent = isReactComponent;

function isCompatTag(tagName) {
  return tagName && /^[a-z]|\-/.test(tagName);
}

function isStringLiteral(node) {
  return t.isLiteral(node) && (0, _lodashLangIsString2["default"])(node.value);
}

function cleanJSXElementLiteralChild(child, args) {
  var lines = child.value.split(/\r\n|\n|\r/);

  var lastNonEmptyLine = 0;

  for (var i = 0; i < lines.length; i++) {
    if (lines[i].match(/[^ \t]/)) {
      lastNonEmptyLine = i;
    }
  }

  var str = "";

  for (var i = 0; i < lines.length; i++) {
    var line = lines[i];

    var isFirstLine = i === 0;
    var isLastLine = i === lines.length - 1;
    var isLastNonEmptyLine = i === lastNonEmptyLine;

    // replace rendered whitespace tabs with spaces
    var trimmedLine = line.replace(/\t/g, " ");

    // trim whitespace touching a newline
    if (!isFirstLine) {
      trimmedLine = trimmedLine.replace(/^[ ]+/, "");
    }

    // trim whitespace touching an endline
    if (!isLastLine) {
      trimmedLine = trimmedLine.replace(/[ ]+$/, "");
    }

    if (trimmedLine) {
      if (!isLastNonEmptyLine) {
        trimmedLine += " ";
      }

      str += trimmedLine;
    }
  }

  if (str) args.push(t.literal(str));
}

function buildChildren(node) {
  var elems = [];

  for (var i = 0; i < node.children.length; i++) {
    var child = node.children[i];

    if (t.isLiteral(child) && typeof child.value === "string") {
      cleanJSXElementLiteralChild(child, elems);
      continue;
    }

    if (t.isJSXExpressionContainer(child)) child = child.expression;
    if (t.isJSXEmptyExpression(child)) continue;

    elems.push(child);
  }

  return elems;
}
},{"../../types":169,"lodash/lang/isString":414}],67:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.is = is;
exports.pullFlag = pullFlag;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _lodashArrayPull = require("lodash/array/pull");

var _lodashArrayPull2 = _interopRequireDefault(_lodashArrayPull);

var _types = require("../../types");

var t = _interopRequireWildcard(_types);

function is(node, flag) {
  return t.isLiteral(node) && node.regex && node.regex.flags.indexOf(flag) >= 0;
}

function pullFlag(node, flag) {
  var flags = node.regex.flags.split("");
  if (node.regex.flags.indexOf(flag) < 0) return;
  (0, _lodashArrayPull2["default"])(flags, flag);
  node.regex.flags = flags.join("");
}
},{"../../types":169,"lodash/array/pull":327}],68:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _types = require("../../types");

var t = _interopRequireWildcard(_types);

var awaitVisitor = {
  enter: function enter(node, parent, scope, state) {
    if (t.isFunction(node)) this.skip();

    if (t.isAwaitExpression(node)) {
      node.type = "YieldExpression";

      if (node.all) {
        // await* foo; -> yield Promise.all(foo);
        node.all = false;
        node.argument = t.callExpression(t.memberExpression(t.identifier("Promise"), t.identifier("all")), [node.argument]);
      }
    }
  }
};

var referenceVisitor = {
  enter: function enter(node, parent, scope, state) {
    var name = state.id.name;
    if (this.isReferencedIdentifier({ name: name }) && scope.bindingIdentifierEquals(name, state.id)) {
      return state.ref = state.ref || scope.generateUidIdentifier(name);
    }
  }
};

exports["default"] = function (node, callId, scope) {
  node.async = false;
  node.generator = true;

  scope.traverse(node, awaitVisitor, state);

  var call = t.callExpression(callId, [node]);

  var id = node.id;
  node.id = null;

  if (t.isFunctionDeclaration(node)) {
    var declar = t.variableDeclaration("let", [t.variableDeclarator(id, call)]);
    declar._blockHoist = true;
    return declar;
  } else {
    if (id) {
      var state = { id: id };
      scope.traverse(node, referenceVisitor, state);

      if (state.ref) {
        scope.parent.push({ id: state.ref });
        return t.assignmentExpression("=", state.ref, call);
      }
    }

    return call;
  }
};

;
module.exports = exports["default"];
},{"../../types":169}],69:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var _messages = require("../../messages");

var messages = _interopRequireWildcard(_messages);

var _types = require("../../types");

var t = _interopRequireWildcard(_types);

function isIllegalBareSuper(node, parent) {
  if (!t.isSuper(node)) return false;
  if (t.isMemberExpression(parent, { computed: false })) return false;
  if (t.isCallExpression(parent, { callee: node })) return false;
  return true;
}

function isMemberExpressionSuper(node) {
  return t.isMemberExpression(node) && t.isSuper(node.object);
}

var visitor = {
  enter: function enter(node, parent, scope, state) {
    var topLevel = state.topLevel;
    var self = state.self;

    if (t.isFunction(node) && !t.isArrowFunctionExpression(node)) {
      // we need to call traverseLevel again so we're context aware
      self.traverseLevel(this, false);
      return this.skip();
    }

    if (t.isProperty(node, { method: true }) || t.isMethodDefinition(node)) {
      // break on object methods
      return this.skip();
    }

    var getThisReference = topLevel ?
    // top level so `this` is the instance
    t.thisExpression :
    // not in the top level so we need to create a reference
    self.getThisReference.bind(self);

    var callback = self.specHandle;
    if (self.isLoose) callback = self.looseHandle;
    var result = callback.call(self, this, getThisReference);
    if (result) this.hasSuper = true;
    if (result === true) return;
    return result;
  }
};

var ReplaceSupers = (function () {

  /**
   * Description
   */

  function ReplaceSupers(opts) {
    var inClass = arguments[1] === undefined ? false : arguments[1];

    _classCallCheck(this, ReplaceSupers);

    this.topLevelThisReference = opts.topLevelThisReference;
    this.methodPath = opts.methodPath;
    this.methodNode = opts.methodNode;
    this.superRef = opts.superRef;
    this.isStatic = opts.isStatic;
    this.hasSuper = false;
    this.inClass = inClass;
    this.isLoose = opts.isLoose;
    this.scope = opts.scope;
    this.file = opts.file;
    this.opts = opts;
  }

  ReplaceSupers.prototype.getObjectRef = function getObjectRef() {
    return this.opts.objectRef || this.opts.getObjectRef();
  };

  /**
   * Sets a super class value of the named property.
   *
   * @example
   *
   *   _set(Object.getPrototypeOf(CLASS.prototype), "METHOD", "VALUE", this)
   *
   */

  ReplaceSupers.prototype.setSuperProperty = function setSuperProperty(property, value, isComputed, thisExpression) {
    return t.callExpression(this.file.addHelper("set"), [t.callExpression(t.memberExpression(t.identifier("Object"), t.identifier("getPrototypeOf")), [this.isStatic ? this.getObjectRef() : t.memberExpression(this.getObjectRef(), t.identifier("prototype"))]), isComputed ? property : t.literal(property.name), value, thisExpression]);
  };

  /**
   * Gets a node representing the super class value of the named property.
   *
   * @example
   *
   *   _get(Object.getPrototypeOf(CLASS.prototype), "METHOD", this)
   *
   */

  ReplaceSupers.prototype.getSuperProperty = function getSuperProperty(property, isComputed, thisExpression) {
    return t.callExpression(this.file.addHelper("get"), [t.callExpression(t.memberExpression(t.identifier("Object"), t.identifier("getPrototypeOf")), [this.isStatic ? this.getObjectRef() : t.memberExpression(this.getObjectRef(), t.identifier("prototype"))]), isComputed ? property : t.literal(property.name), thisExpression]);
  };

  /**
   * Description
   */

  ReplaceSupers.prototype.replace = function replace() {
    this.traverseLevel(this.methodPath.get("value"), true);
  };

  /**
   * Description
   */

  ReplaceSupers.prototype.traverseLevel = function traverseLevel(path, topLevel) {
    var state = { self: this, topLevel: topLevel };
    path.traverse(visitor, state);
  };

  /**
   * Description
   */

  ReplaceSupers.prototype.getThisReference = function getThisReference() {
    if (this.topLevelThisReference) {
      return this.topLevelThisReference;
    } else {
      var ref = this.topLevelThisReference = this.scope.generateUidIdentifier("this");
      this.methodNode.value.body.body.unshift(t.variableDeclaration("var", [t.variableDeclarator(this.topLevelThisReference, t.thisExpression())]));
      return ref;
    }
  };

  /**
   * Description
   */

  ReplaceSupers.prototype.getLooseSuperProperty = function getLooseSuperProperty(id, parent) {
    var methodNode = this.methodNode;
    var methodName = methodNode.key;
    var superRef = this.superRef || t.identifier("Function");

    if (parent.property === id) {
      return;
    } else if (t.isCallExpression(parent, { callee: id })) {
      // super(); -> objectRef.prototype.MethodName.call(this);
      parent.arguments.unshift(t.thisExpression());

      if (methodName.name === "constructor") {
        // constructor() { super(); }
        return t.memberExpression(superRef, t.identifier("call"));
      } else {
        id = superRef;

        // foo() { super(); }
        if (!methodNode["static"]) {
          id = t.memberExpression(id, t.identifier("prototype"));
        }

        id = t.memberExpression(id, methodName, methodNode.computed);
        return t.memberExpression(id, t.identifier("call"));
      }
    } else if (t.isMemberExpression(parent) && !methodNode["static"]) {
      // super.test -> objectRef.prototype.test
      return t.memberExpression(superRef, t.identifier("prototype"));
    } else {
      return superRef;
    }
  };

  /**
   * Description
   */

  ReplaceSupers.prototype.looseHandle = function looseHandle(path, getThisReference) {
    var node = path.node;
    if (path.isSuper()) {
      return this.getLooseSuperProperty(node, path.parent);
    } else if (path.isCallExpression()) {
      var callee = node.callee;
      if (!t.isMemberExpression(callee)) return;
      if (!t.isSuper(callee.object)) return;

      // super.test(); -> objectRef.prototype.MethodName.call(this);
      t.appendToMemberExpression(callee, t.identifier("call"));
      node.arguments.unshift(getThisReference());
      return true;
    }
  };

  /**
   * Description
   */

  ReplaceSupers.prototype.specHandleAssignmentExpression = function specHandleAssignmentExpression(ref, path, node, getThisReference) {
    if (node.operator === "=") {
      // super.name = "val"; -> _set(Object.getPrototypeOf(objectRef.prototype), "name", this);
      return this.setSuperProperty(node.left.property, node.right, node.left.computed, getThisReference());
    } else {
      // super.age += 2; -> var _ref = super.age; super.age = _ref + 2;
      ref = ref || path.scope.generateUidIdentifier("ref");
      return [t.variableDeclaration("var", [t.variableDeclarator(ref, node.left)]), t.expressionStatement(t.assignmentExpression("=", node.left, t.binaryExpression(node.operator[0], ref, node.right)))];
    }
  };

  /**
   * Description
   */

  ReplaceSupers.prototype.specHandle = function specHandle(path, getThisReference) {
    var methodNode = this.methodNode;
    var property;
    var computed;
    var args;
    var thisReference;

    var parent = path.parent;
    var node = path.node;

    if (isIllegalBareSuper(node, parent)) {
      throw path.errorWithNode(messages.get("classesIllegalBareSuper"));
    }

    if (t.isCallExpression(node)) {
      var callee = node.callee;
      if (t.isSuper(callee)) {
        // super(); -> _get(Object.getPrototypeOf(objectRef), "MethodName", this).call(this);
        property = methodNode.key;
        computed = methodNode.computed;
        args = node.arguments;

        // bare `super` call is illegal inside non-constructors
        //  - https://esdiscuss.org/topic/super-call-in-methods
        //  - https://twitter.com/wycats/status/544553184396836864
        if (methodNode.key.name !== "constructor" || !this.inClass) {
          var methodName = methodNode.key.name || "METHOD_NAME";
          throw this.file.errorWithNode(node, messages.get("classesIllegalSuperCall", methodName));
        }
      } else if (isMemberExpressionSuper(callee)) {
        // super.test(); -> _get(Object.getPrototypeOf(objectRef.prototype), "test", this).call(this);
        property = callee.property;
        computed = callee.computed;
        args = node.arguments;
      }
    } else if (t.isMemberExpression(node) && t.isSuper(node.object)) {
      // super.name; -> _get(Object.getPrototypeOf(objectRef.prototype), "name", this);
      property = node.property;
      computed = node.computed;
    } else if (t.isUpdateExpression(node) && isMemberExpressionSuper(node.argument)) {
      var binary = t.binaryExpression(node.operator[0], node.argument, t.literal(1));
      if (node.prefix) {
        // ++super.foo; -> super.foo += 1;
        return this.specHandleAssignmentExpression(null, path, binary, getThisReference);
      } else {
        // super.foo++; -> var _ref = super.foo; super.foo = _ref + 1;
        var ref = path.scope.generateUidIdentifier("ref");
        return this.specHandleAssignmentExpression(ref, path, binary, getThisReference).concat(t.expressionStatement(ref));
      }
    } else if (t.isAssignmentExpression(node) && isMemberExpressionSuper(node.left)) {
      return this.specHandleAssignmentExpression(null, path, node, getThisReference);
    }

    if (!property) return;

    thisReference = getThisReference();
    var superProperty = this.getSuperProperty(property, computed, thisReference);
    if (args) {
      if (args.length === 1 && t.isSpreadElement(args[0])) {
        // super(...arguments);
        return t.callExpression(t.memberExpression(superProperty, t.identifier("apply")), [thisReference, args[0].argument]);
      } else {
        return t.callExpression(t.memberExpression(superProperty, t.identifier("call")), [thisReference].concat(args));
      }
    } else {
      return superProperty;
    }
  };

  return ReplaceSupers;
})();

exports["default"] = ReplaceSupers;
module.exports = exports["default"];
},{"../../messages":47,"../../types":169}],70:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.has = has;
exports.wrap = wrap;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _types = require("../../types");

var t = _interopRequireWildcard(_types);

function has(node) {
  var first = node.body[0];
  return t.isExpressionStatement(first) && t.isLiteral(first.expression, { value: "use strict" });
}

function wrap(node, callback) {
  var useStrictNode;
  if (has(node)) {
    useStrictNode = node.body.shift();
  }

  callback();

  if (useStrictNode) {
    node.body.unshift(useStrictNode);
  }
}
},{"../../types":169}],71:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _transformerPipeline = require("./transformer-pipeline");

var _transformerPipeline2 = _interopRequireDefault(_transformerPipeline);

//

var _transformers = require("./transformers");

var _transformers2 = _interopRequireDefault(_transformers);

//

var _transformersDeprecated = require("./transformers/deprecated");

var _transformersDeprecated2 = _interopRequireDefault(_transformersDeprecated);

//

var _transformersAliases = require("./transformers/aliases");

var _transformersAliases2 = _interopRequireDefault(_transformersAliases);

//

var _transformersFilters = require("./transformers/filters");

var filters = _interopRequireWildcard(_transformersFilters);

var pipeline = new _transformerPipeline2["default"]();

for (var key in _transformers2["default"]) {
  var transformer = _transformers2["default"][key];
  var metadata = transformer.metadata = transformer.metadata || {};
  metadata.group = metadata.group || "builtin-basic";
}

pipeline.addTransformers(_transformers2["default"]);
pipeline.addDeprecated(_transformersDeprecated2["default"]);
pipeline.addAliases(_transformersAliases2["default"]);
pipeline.addFilter(filters.internal);
pipeline.addFilter(filters.blacklist);
pipeline.addFilter(filters.whitelist);
pipeline.addFilter(filters.stage);
pipeline.addFilter(filters.optional);

//

var transform = pipeline.transform.bind(pipeline);
transform.fromAst = pipeline.transformFromAst.bind(pipeline);
transform.pipeline = pipeline;
exports["default"] = transform;
module.exports = exports["default"];
},{"./transformer-pipeline":84,"./transformers":122,"./transformers/aliases":86,"./transformers/deprecated":87,"./transformers/filters":121}],72:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var _messages = require("../../messages");

var messages = _interopRequireWildcard(_messages);

var _traversal = require("../../traversal");

var _traversal2 = _interopRequireDefault(_traversal);

var _lodashObjectExtend = require("lodash/object/extend");

var _lodashObjectExtend2 = _interopRequireDefault(_lodashObjectExtend);

var _helpersObject = require("../../helpers/object");

var _helpersObject2 = _interopRequireDefault(_helpersObject);

var _util = require("../../util");

var util = _interopRequireWildcard(_util);

var _types = require("../../types");

var t = _interopRequireWildcard(_types);

var remapVisitor = {
  enter: function enter(node, parent, scope, formatter) {
    if (node._skipModulesRemap) {
      return this.skip();
    }
  },

  ReferencedIdentifier: function ReferencedIdentifier(node, parent, scope, formatter) {
    var remap = formatter.internalRemap[node.name];

    if (remap && node !== remap) {
      if (!scope.hasBinding(node.name) || scope.bindingIdentifierEquals(node.name, formatter.localImports[node.name])) {
        if (this.key === "callee" && this.parentPath.isCallExpression()) {
          return t.sequenceExpression([t.literal(0), remap]);
        } else {
          return remap;
        }
      }
    }
  },

  AssignmentExpression: {
    exit: function exit(node, parent, scope, formatter) {
      if (!node._ignoreModulesRemap) {
        var exported = formatter.getExport(node.left, scope);
        if (exported) {
          return formatter.remapExportAssignment(node, exported);
        }
      }
    }
  },

  UpdateExpression: function UpdateExpression(node, parent, scope, formatter) {
    var exported = formatter.getExport(node.argument, scope);
    if (!exported) return;

    this.skip();

    // expand to long file assignment expression
    var assign = t.assignmentExpression(node.operator[0] + "=", node.argument, t.literal(1));

    // remap this assignment expression
    var remapped = formatter.remapExportAssignment(assign, exported);

    // we don't need to change the result
    if (t.isExpressionStatement(parent) || node.prefix) {
      return remapped;
    }

    var nodes = [];
    nodes.push(remapped);

    var operator;
    if (node.operator === "--") {
      operator = "+";
    } else {
      // "++"
      operator = "-";
    }
    nodes.push(t.binaryExpression(operator, node.argument, t.literal(1)));

    return t.sequenceExpression(nodes);
  }
};

var importsVisitor = {
  ImportDeclaration: {
    enter: function enter(node, parent, scope, formatter) {
      formatter.hasLocalImports = true;
      (0, _lodashObjectExtend2["default"])(formatter.localImports, this.getBindingIdentifiers());
    }
  }
};

var exportsVisitor = {
  ExportDeclaration: {
    enter: function enter(node, parent, scope, formatter) {
      formatter.hasLocalExports = true;

      var declar = this.get("declaration");
      if (declar.isStatement()) {
        var bindings = declar.getBindingIdentifiers();
        for (var name in bindings) {
          var binding = bindings[name];
          formatter._addExport(name, binding);
        }
      }

      if (this.isExportNamedDeclaration() && node.specifiers) {
        for (var i = 0; i < node.specifiers.length; i++) {
          var specifier = node.specifiers[i];
          var local = specifier.local;
          if (!local) continue;

          formatter._addExport(local.name, specifier.exported);
        }
      }

      if (!t.isExportDefaultDeclaration(node)) {
        var onlyDefault = node.specifiers && node.specifiers.length === 1 && t.isSpecifierDefault(node.specifiers[0]);
        if (!onlyDefault) {
          formatter.hasNonDefaultExports = true;
        }
      }
    }
  }
};

var DefaultFormatter = (function () {
  function DefaultFormatter(file) {
    _classCallCheck(this, DefaultFormatter);

    this.internalRemap = (0, _helpersObject2["default"])();
    this.defaultIds = (0, _helpersObject2["default"])();
    this.scope = file.scope;
    this.file = file;
    this.ids = (0, _helpersObject2["default"])();

    this.hasNonDefaultExports = false;

    this.hasLocalExports = false;
    this.hasLocalImports = false;

    this.localExports = (0, _helpersObject2["default"])();
    this.localImports = (0, _helpersObject2["default"])();

    this.getLocalExports();
    this.getLocalImports();
  }

  DefaultFormatter.prototype.isModuleType = function isModuleType(node, type) {
    var modules = this.file.dynamicImportTypes[type];
    return modules && modules.indexOf(node) >= 0;
  };

  DefaultFormatter.prototype.transform = function transform() {
    this.remapAssignments();
  };

  DefaultFormatter.prototype.doDefaultExportInterop = function doDefaultExportInterop(node) {
    return (t.isExportDefaultDeclaration(node) || t.isSpecifierDefault(node)) && !this.noInteropRequireExport && !this.hasNonDefaultExports;
  };

  DefaultFormatter.prototype.getLocalExports = function getLocalExports() {
    this.file.path.traverse(exportsVisitor, this);
  };

  DefaultFormatter.prototype.getLocalImports = function getLocalImports() {
    this.file.path.traverse(importsVisitor, this);
  };

  DefaultFormatter.prototype.remapAssignments = function remapAssignments() {
    if (this.hasLocalExports || this.hasLocalImports) {
      this.file.path.traverse(remapVisitor, this);
    }
  };

  DefaultFormatter.prototype.remapExportAssignment = function remapExportAssignment(node, exported) {
    var assign = node;

    for (var i = 0; i < exported.length; i++) {
      assign = t.assignmentExpression("=", t.memberExpression(t.identifier("exports"), exported[i]), assign);
    }

    return assign;
  };

  DefaultFormatter.prototype._addExport = function _addExport(name, exported) {
    var info = this.localExports[name] = this.localExports[name] || {
      binding: this.scope.getBindingIdentifier(name),
      exported: []
    };
    info.exported.push(exported);
  };

  DefaultFormatter.prototype.getExport = function getExport(node, scope) {
    if (!t.isIdentifier(node)) return;

    var local = this.localExports[node.name];
    if (local && local.binding === scope.getBindingIdentifier(node.name)) {
      return local.exported;
    }
  };

  DefaultFormatter.prototype.getModuleName = function getModuleName() {
    var opts = this.file.opts;
    // moduleId is n/a if a `getModuleId()` is provided
    if (opts.moduleId && !opts.getModuleId) {
      return opts.moduleId;
    }

    var filenameRelative = opts.filenameRelative;
    var moduleName = "";

    if (opts.moduleRoot) {
      moduleName = opts.moduleRoot + "/";
    }

    if (!opts.filenameRelative) {
      return moduleName + opts.filename.replace(/^\//, "");
    }

    if (opts.sourceRoot) {
      // remove sourceRoot from filename
      var sourceRootRegEx = new RegExp("^" + opts.sourceRoot + "/?");
      filenameRelative = filenameRelative.replace(sourceRootRegEx, "");
    }

    if (!opts.keepModuleIdExtensions) {
      // remove extension
      filenameRelative = filenameRelative.replace(/\.(\w*?)$/, "");
    }

    moduleName += filenameRelative;

    // normalize path separators
    moduleName = moduleName.replace(/\\/g, "/");

    if (opts.getModuleId) {
      // If return is falsy, assume they want us to use our generated default name
      return opts.getModuleId(moduleName) || moduleName;
    } else {
      return moduleName;
    }
  };

  DefaultFormatter.prototype._pushStatement = function _pushStatement(ref, nodes) {
    if (t.isClass(ref) || t.isFunction(ref)) {
      if (ref.id) {
        nodes.push(t.toStatement(ref));
        ref = ref.id;
      }
    }

    return ref;
  };

  DefaultFormatter.prototype._hoistExport = function _hoistExport(declar, assign, priority) {
    if (t.isFunctionDeclaration(declar)) {
      assign._blockHoist = priority || 2;
    }

    return assign;
  };

  DefaultFormatter.prototype.getExternalReference = function getExternalReference(node, nodes) {
    var ids = this.ids;
    var id = node.source.value;

    if (ids[id]) {
      return ids[id];
    } else {
      return this.ids[id] = this._getExternalReference(node, nodes);
    }
  };

  DefaultFormatter.prototype.checkExportIdentifier = function checkExportIdentifier(node) {
    if (t.isIdentifier(node, { name: "__esModule" })) {
      throw this.file.errorWithNode(node, messages.get("modulesIllegalExportName", node.name));
    }
  };

  DefaultFormatter.prototype.exportAllDeclaration = function exportAllDeclaration(node, nodes) {
    var ref = this.getExternalReference(node, nodes);
    nodes.push(this.buildExportsWildcard(ref, node));
  };

  DefaultFormatter.prototype.isLoose = function isLoose() {
    return this.file.isLoose("es6.modules");
  };

  DefaultFormatter.prototype.exportSpecifier = function exportSpecifier(specifier, node, nodes) {
    if (node.source) {
      var ref = this.getExternalReference(node, nodes);

      if (specifier.local.name === "default" && !this.noInteropRequireExport) {
        // importing a default so we need to normalize it
        ref = t.callExpression(this.file.addHelper("interop-require"), [ref]);
      } else {
        ref = t.memberExpression(ref, specifier.local);

        if (!this.isLoose()) {
          nodes.push(this.buildExportsFromAssignment(specifier.exported, ref, node));
          return;
        }
      }

      // export { foo } from "test";
      nodes.push(this.buildExportsAssignment(specifier.exported, ref, node));
    } else {
      // export { foo };
      nodes.push(this.buildExportsAssignment(specifier.exported, specifier.local, node));
    }
  };

  DefaultFormatter.prototype.buildExportsWildcard = function buildExportsWildcard(objectIdentifier) {
    return t.expressionStatement(t.callExpression(this.file.addHelper("defaults"), [t.identifier("exports"), t.callExpression(this.file.addHelper("interop-require-wildcard"), [objectIdentifier])]));
  };

  DefaultFormatter.prototype.buildExportsFromAssignment = function buildExportsFromAssignment(id, init) {
    this.checkExportIdentifier(id);
    return util.template("exports-from-assign", {
      INIT: init,
      ID: t.literal(id.name)
    }, true);
  };

  DefaultFormatter.prototype.buildExportsAssignment = function buildExportsAssignment(id, init) {
    this.checkExportIdentifier(id);
    return util.template("exports-assign", {
      VALUE: init,
      KEY: id
    }, true);
  };

  DefaultFormatter.prototype.exportDeclaration = function exportDeclaration(node, nodes) {
    var declar = node.declaration;

    var id = declar.id;

    if (t.isExportDefaultDeclaration(node)) {
      id = t.identifier("default");
    }

    var assign;

    if (t.isVariableDeclaration(declar)) {
      for (var i = 0; i < declar.declarations.length; i++) {
        var decl = declar.declarations[i];

        decl.init = this.buildExportsAssignment(decl.id, decl.init, node).expression;

        var newDeclar = t.variableDeclaration(declar.kind, [decl]);
        if (i === 0) t.inherits(newDeclar, declar);
        nodes.push(newDeclar);
      }
    } else {
      var ref = declar;

      if (t.isFunctionDeclaration(declar) || t.isClassDeclaration(declar)) {
        ref = declar.id;
        nodes.push(declar);
      }

      assign = this.buildExportsAssignment(id, ref, node);

      nodes.push(assign);

      this._hoistExport(declar, assign);
    }
  };

  return DefaultFormatter;
})();

exports["default"] = DefaultFormatter;
module.exports = exports["default"];
},{"../../helpers/object":45,"../../messages":47,"../../traversal":157,"../../types":169,"../../util":173,"lodash/object/extend":419}],73:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _util = require("../../util");

var util = _interopRequireWildcard(_util);

exports["default"] = function (Parent) {
  var Constructor = function Constructor() {
    this.noInteropRequireImport = true;
    this.noInteropRequireExport = true;
    Parent.apply(this, arguments);
  };

  util.inherits(Constructor, Parent);

  return Constructor;
};

;
module.exports = exports["default"];
},{"../../util":173}],74:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _amd = require("./amd");

var _amd2 = _interopRequireDefault(_amd);

var _strict = require("./_strict");

var _strict2 = _interopRequireDefault(_strict);

exports["default"] = (0, _strict2["default"])(_amd2["default"]);
module.exports = exports["default"];
},{"./_strict":73,"./amd":75}],75:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) subClass.__proto__ = superClass; }

var _default = require("./_default");

var _default2 = _interopRequireDefault(_default);

var _common = require("./common");

var _common2 = _interopRequireDefault(_common);

var _lodashCollectionIncludes = require("lodash/collection/includes");

var _lodashCollectionIncludes2 = _interopRequireDefault(_lodashCollectionIncludes);

var _lodashObjectValues = require("lodash/object/values");

var _lodashObjectValues2 = _interopRequireDefault(_lodashObjectValues);

var _util = require("../../util");

var util = _interopRequireWildcard(_util);

var _types = require("../../types");

var t = _interopRequireWildcard(_types);

var AMDFormatter = (function (_DefaultFormatter) {
  function AMDFormatter() {
    _classCallCheck(this, AMDFormatter);

    if (_DefaultFormatter != null) {
      _DefaultFormatter.apply(this, arguments);
    }
  }

  _inherits(AMDFormatter, _DefaultFormatter);

  AMDFormatter.prototype.setup = function setup() {
    _common2["default"].prototype._setup.call(this, this.hasNonDefaultExports);
  };

  AMDFormatter.prototype.buildDependencyLiterals = function buildDependencyLiterals() {
    var names = [];
    for (var name in this.ids) {
      names.push(t.literal(name));
    }
    return names;
  };

  /**
   * Wrap the entire body in a `define` wrapper.
   */

  AMDFormatter.prototype.transform = function transform(program) {
    _common2["default"].prototype.transform.apply(this, arguments);

    var body = program.body;

    // build an array of module names

    var names = [t.literal("exports")];
    if (this.passModuleArg) names.push(t.literal("module"));
    names = names.concat(this.buildDependencyLiterals());
    names = t.arrayExpression(names);

    // build up define container

    var params = (0, _lodashObjectValues2["default"])(this.ids);
    if (this.passModuleArg) params.unshift(t.identifier("module"));
    params.unshift(t.identifier("exports"));

    var container = t.functionExpression(null, params, t.blockStatement(body));

    var defineArgs = [names, container];
    var moduleName = this.getModuleName();
    if (moduleName) defineArgs.unshift(t.literal(moduleName));

    var call = t.callExpression(t.identifier("define"), defineArgs);

    program.body = [t.expressionStatement(call)];
  };

  /**
   * Get the AMD module name that we'll prepend to the wrapper
   * to define this module
   */

  AMDFormatter.prototype.getModuleName = function getModuleName() {
    if (this.file.opts.moduleIds) {
      return _default2["default"].prototype.getModuleName.apply(this, arguments);
    } else {
      return null;
    }
  };

  AMDFormatter.prototype._getExternalReference = function _getExternalReference(node) {
    return this.scope.generateUidIdentifier(node.source.value);
  };

  AMDFormatter.prototype.importDeclaration = function importDeclaration(node) {
    this.getExternalReference(node);
  };

  AMDFormatter.prototype.importSpecifier = function importSpecifier(specifier, node, nodes) {
    var key = node.source.value;
    var ref = this.getExternalReference(node);

    if (t.isImportNamespaceSpecifier(specifier) || t.isImportDefaultSpecifier(specifier)) {
      this.defaultIds[key] = specifier.local;
    }

    if (this.isModuleType(node, "absolute")) {} else if (this.isModuleType(node, "absoluteDefault")) {
      // prevent unnecessary renaming of dynamic imports
      this.ids[node.source.value] = ref;
      ref = t.memberExpression(ref, t.identifier("default"));
    } else if (t.isImportNamespaceSpecifier(specifier)) {} else if (!(0, _lodashCollectionIncludes2["default"])(this.file.dynamicImported, node) && t.isSpecifierDefault(specifier) && !this.noInteropRequireImport) {
      // import foo from "foo";
      var uid = this.scope.generateUidIdentifier(specifier.local.name);
      nodes.push(t.variableDeclaration("var", [t.variableDeclarator(uid, t.callExpression(this.file.addHelper("interop-require"), [ref]))]));
      ref = uid;
    } else {
      // import { foo } from "foo";
      var imported = specifier.imported;
      if (t.isSpecifierDefault(specifier)) imported = t.identifier("default");
      ref = t.memberExpression(ref, imported);
    }

    this.internalRemap[specifier.local.name] = ref;
  };

  AMDFormatter.prototype.exportSpecifier = function exportSpecifier(specifier, node, nodes) {
    if (this.doDefaultExportInterop(specifier)) {
      this.passModuleArg = true;

      if (specifier.exported !== specifier.local && !node.source) {
        nodes.push(util.template("exports-default-assign", {
          VALUE: specifier.local
        }, true));
        return;
      }
    }

    _common2["default"].prototype.exportSpecifier.apply(this, arguments);
  };

  AMDFormatter.prototype.exportDeclaration = function exportDeclaration(node, nodes) {
    if (this.doDefaultExportInterop(node)) {
      this.passModuleArg = true;

      var declar = node.declaration;
      var assign = util.template("exports-default-assign", {
        VALUE: this._pushStatement(declar, nodes)
      }, true);

      if (t.isFunctionDeclaration(declar)) {
        // we can hoist this assignment to the top of the file
        assign._blockHoist = 3;
      }

      nodes.push(assign);
      return;
    }

    _default2["default"].prototype.exportDeclaration.apply(this, arguments);
  };

  return AMDFormatter;
})(_default2["default"]);

exports["default"] = AMDFormatter;
module.exports = exports["default"];

// absolute module reference

// import * as bar from "foo";
},{"../../types":169,"../../util":173,"./_default":72,"./common":77,"lodash/collection/includes":332,"lodash/object/values":424}],76:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _common = require("./common");

var _common2 = _interopRequireDefault(_common);

var _strict = require("./_strict");

var _strict2 = _interopRequireDefault(_strict);

exports["default"] = (0, _strict2["default"])(_common2["default"]);
module.exports = exports["default"];
},{"./_strict":73,"./common":77}],77:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) subClass.__proto__ = superClass; }

var _default = require("./_default");

var _default2 = _interopRequireDefault(_default);

var _lodashCollectionIncludes = require("lodash/collection/includes");

var _lodashCollectionIncludes2 = _interopRequireDefault(_lodashCollectionIncludes);

var _util = require("../../util");

var util = _interopRequireWildcard(_util);

var _types = require("../../types");

var t = _interopRequireWildcard(_types);

var CommonJSFormatter = (function (_DefaultFormatter) {
  function CommonJSFormatter() {
    _classCallCheck(this, CommonJSFormatter);

    if (_DefaultFormatter != null) {
      _DefaultFormatter.apply(this, arguments);
    }
  }

  _inherits(CommonJSFormatter, _DefaultFormatter);

  CommonJSFormatter.prototype.setup = function setup() {
    this._setup(this.hasLocalExports);
  };

  CommonJSFormatter.prototype._setup = function _setup(conditional) {
    var file = this.file;
    var scope = file.scope;

    scope.rename("module");
    scope.rename("exports");

    if (!this.noInteropRequireImport && conditional) {
      var templateName = "exports-module-declaration";
      if (this.file.isLoose("es6.modules")) templateName += "-loose";
      var declar = util.template(templateName, true);
      declar._blockHoist = 3;
      file.path.unshiftContainer("body", [declar]);
    }
  };

  CommonJSFormatter.prototype.transform = function transform(program) {
    _default2["default"].prototype.transform.apply(this, arguments);

    if (this.hasDefaultOnlyExport) {
      program.body.push(t.expressionStatement(t.assignmentExpression("=", t.memberExpression(t.identifier("module"), t.identifier("exports")), t.memberExpression(t.identifier("exports"), t.identifier("default")))));
    }
  };

  CommonJSFormatter.prototype.importSpecifier = function importSpecifier(specifier, node, nodes) {
    var variableName = specifier.local;

    var ref = this.getExternalReference(node, nodes);

    // import foo from "foo";
    if (t.isSpecifierDefault(specifier)) {
      if (this.isModuleType(node, "absolute")) {} else if (this.isModuleType(node, "absoluteDefault")) {
        this.internalRemap[variableName.name] = ref;
      } else if (this.noInteropRequireImport) {
        this.internalRemap[variableName.name] = t.memberExpression(ref, t.identifier("default"));
      } else {
        var uid = this.scope.generateUidIdentifierBasedOnNode(node, "import");

        nodes.push(t.variableDeclaration("var", [t.variableDeclarator(uid, t.callExpression(this.file.addHelper("interop-require-default"), [ref]))]));

        this.internalRemap[variableName.name] = t.memberExpression(uid, t.identifier("default"));
      }
    } else {
      if (t.isImportNamespaceSpecifier(specifier)) {
        if (!this.noInteropRequireImport) {
          ref = t.callExpression(this.file.addHelper("interop-require-wildcard"), [ref]);
        }

        // import * as bar from "foo";
        nodes.push(t.variableDeclaration("var", [t.variableDeclarator(variableName, ref)]));
      } else {
        // import { foo } from "foo";
        this.internalRemap[variableName.name] = t.memberExpression(ref, specifier.imported);
      }
    }
  };

  CommonJSFormatter.prototype.importDeclaration = function importDeclaration(node, nodes) {
    // import "foo";
    nodes.push(util.template("require", {
      MODULE_NAME: node.source
    }, true));
  };

  CommonJSFormatter.prototype.exportSpecifier = function exportSpecifier(specifier, node, nodes) {
    if (this.doDefaultExportInterop(specifier)) {
      this.hasDefaultOnlyExport = true;
    }

    _default2["default"].prototype.exportSpecifier.apply(this, arguments);
  };

  CommonJSFormatter.prototype.exportDeclaration = function exportDeclaration(node, nodes) {
    if (this.doDefaultExportInterop(node)) {
      this.hasDefaultOnlyExport = true;
    }

    _default2["default"].prototype.exportDeclaration.apply(this, arguments);
  };

  CommonJSFormatter.prototype._getExternalReference = function _getExternalReference(node, nodes) {
    var source = node.source.value;

    var call = t.callExpression(t.identifier("require"), [node.source]);
    var uid;

    if (this.isModuleType(node, "absolute")) {} else if (this.isModuleType(node, "absoluteDefault")) {
      call = t.memberExpression(call, t.identifier("default"));
    } else {
      uid = this.scope.generateUidIdentifierBasedOnNode(node, "import");
    }

    uid = uid || node.specifiers[0].local;

    var declar = t.variableDeclaration("var", [t.variableDeclarator(uid, call)]);
    nodes.push(declar);
    return uid;
  };

  return CommonJSFormatter;
})(_default2["default"]);

exports["default"] = CommonJSFormatter;
module.exports = exports["default"];

// absolute module reference

// absolute module reference
},{"../../types":169,"../../util":173,"./_default":72,"lodash/collection/includes":332}],78:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var _types = require("../../types");

var t = _interopRequireWildcard(_types);

var IgnoreFormatter = (function () {
  function IgnoreFormatter() {
    _classCallCheck(this, IgnoreFormatter);
  }

  IgnoreFormatter.prototype.exportDeclaration = function exportDeclaration(node, nodes) {
    var declar = t.toStatement(node.declaration, true);
    if (declar) nodes.push(t.inherits(declar, node));
  };

  IgnoreFormatter.prototype.exportAllDeclaration = function exportAllDeclaration() {};

  IgnoreFormatter.prototype.importDeclaration = function importDeclaration() {};

  IgnoreFormatter.prototype.importSpecifier = function importSpecifier() {};

  IgnoreFormatter.prototype.exportSpecifier = function exportSpecifier() {};

  return IgnoreFormatter;
})();

exports["default"] = IgnoreFormatter;
module.exports = exports["default"];
},{"../../types":169}],79:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports["default"] = {
  commonStrict: require("./common-strict"),
  amdStrict: require("./amd-strict"),
  umdStrict: require("./umd-strict"),
  common: require("./common"),
  system: require("./system"),
  ignore: require("./ignore"),
  amd: require("./amd"),
  umd: require("./umd")
};
module.exports = exports["default"];
},{"./amd":75,"./amd-strict":74,"./common":77,"./common-strict":76,"./ignore":78,"./system":80,"./umd":82,"./umd-strict":81}],80:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) subClass.__proto__ = superClass; }

var _default = require("./_default");

var _default2 = _interopRequireDefault(_default);

var _amd = require("./amd");

var _amd2 = _interopRequireDefault(_amd);

var _helpersObject = require("../../helpers/object");

var _helpersObject2 = _interopRequireDefault(_helpersObject);

var _util = require("../../util");

var util = _interopRequireWildcard(_util);

var _lodashArrayLast = require("lodash/array/last");

var _lodashArrayLast2 = _interopRequireDefault(_lodashArrayLast);

var _lodashCollectionEach = require("lodash/collection/each");

var _lodashCollectionEach2 = _interopRequireDefault(_lodashCollectionEach);

var _lodashCollectionMap = require("lodash/collection/map");

var _lodashCollectionMap2 = _interopRequireDefault(_lodashCollectionMap);

var _types = require("../../types");

var t = _interopRequireWildcard(_types);

var hoistVariablesVisitor = {
  enter: function enter(node, parent, scope, state) {
    if (t.isFunction(node)) {
      // nothing inside is accessible
      return this.skip();
    }

    if (t.isVariableDeclaration(node)) {
      if (node.kind !== "var" && !t.isProgram(parent)) {
        // let, const
        // can't be accessed
        return;
      }

      // ignore block hoisted nodes as these can be left in
      if (state.formatter._canHoist(node)) return;

      var nodes = [];

      for (var i = 0; i < node.declarations.length; i++) {
        var declar = node.declarations[i];
        state.hoistDeclarators.push(t.variableDeclarator(declar.id));
        if (declar.init) {
          // no initializer so we can just hoist it as-is
          var assign = t.expressionStatement(t.assignmentExpression("=", declar.id, declar.init));
          nodes.push(assign);
        }
      }

      // for (var i in test)
      // for (var i = 0;;)
      if (t.isFor(parent) && parent.left === node) {
        return node.declarations[0].id;
      }

      return nodes;
    }
  }
};

var hoistFunctionsVisitor = {
  enter: function enter(node, parent, scope, state) {
    if (t.isFunction(node)) this.skip();

    if (t.isFunctionDeclaration(node) || state.formatter._canHoist(node)) {
      state.handlerBody.push(node);
      this.remove();
    }
  }
};

var runnerSettersVisitor = {
  enter: function enter(node, parent, scope, state) {
    if (node._importSource === state.source) {
      if (t.isVariableDeclaration(node)) {
        var _arr = node.declarations;

        for (var _i = 0; _i < _arr.length; _i++) {
          var declar = _arr[_i];
          state.hoistDeclarators.push(t.variableDeclarator(declar.id));
          state.nodes.push(t.expressionStatement(t.assignmentExpression("=", declar.id, declar.init)));
        }
      } else {
        state.nodes.push(node);
      }

      this.remove();
    }
  }
};

var SystemFormatter = (function (_AMDFormatter) {
  function SystemFormatter(file) {
    _classCallCheck(this, SystemFormatter);

    _AMDFormatter.call(this, file);

    this.exportIdentifier = file.scope.generateUidIdentifier("export");
    this.noInteropRequireExport = true;
    this.noInteropRequireImport = true;
  }

  _inherits(SystemFormatter, _AMDFormatter);

  SystemFormatter.prototype._addImportSource = function _addImportSource(node, exportNode) {
    if (node) node._importSource = exportNode.source && exportNode.source.value;
    return node;
  };

  SystemFormatter.prototype.buildExportsWildcard = function buildExportsWildcard(objectIdentifier, node) {
    var leftIdentifier = this.scope.generateUidIdentifier("key");
    var valIdentifier = t.memberExpression(objectIdentifier, leftIdentifier, true);

    var left = t.variableDeclaration("var", [t.variableDeclarator(leftIdentifier)]);

    var right = objectIdentifier;

    var block = t.blockStatement([t.expressionStatement(this._buildExportCall(leftIdentifier, valIdentifier))]);

    return this._addImportSource(t.forInStatement(left, right, block), node);
  };

  SystemFormatter.prototype.buildExportsAssignment = function buildExportsAssignment(id, init, node) {
    var call = this._buildExportCall(t.literal(id.name), init, true);
    return this._addImportSource(call, node);
  };

  SystemFormatter.prototype.buildExportsFromAssignment = function buildExportsFromAssignment() {
    return this.buildExportsAssignment.apply(this, arguments);
  };

  SystemFormatter.prototype.remapExportAssignment = function remapExportAssignment(node, exported) {
    var assign = node;

    for (var i = 0; i < exported.length; i++) {
      assign = this._buildExportCall(t.literal(exported[i].name), assign);
    }

    return assign;
  };

  SystemFormatter.prototype._buildExportCall = function _buildExportCall(id, init, isStatement) {
    var call = t.callExpression(this.exportIdentifier, [id, init]);
    if (isStatement) {
      return t.expressionStatement(call);
    } else {
      return call;
    }
  };

  SystemFormatter.prototype.importSpecifier = function importSpecifier(specifier, node, nodes) {
    _amd2["default"].prototype.importSpecifier.apply(this, arguments);

    for (var name in this.internalRemap) {
      nodes.push(t.variableDeclaration("var", [t.variableDeclarator(t.identifier(name), this.internalRemap[name])]));
    }

    this.internalRemap = (0, _helpersObject2["default"])();

    this._addImportSource((0, _lodashArrayLast2["default"])(nodes), node);
  };

  SystemFormatter.prototype._buildRunnerSetters = function _buildRunnerSetters(block, hoistDeclarators) {
    var scope = this.file.scope;

    return t.arrayExpression((0, _lodashCollectionMap2["default"])(this.ids, function (uid, source) {
      var state = {
        hoistDeclarators: hoistDeclarators,
        source: source,
        nodes: []
      };

      scope.traverse(block, runnerSettersVisitor, state);

      return t.functionExpression(null, [uid], t.blockStatement(state.nodes));
    }));
  };

  SystemFormatter.prototype._canHoist = function _canHoist(node) {
    return node._blockHoist && !this.file.dynamicImports.length;
  };

  SystemFormatter.prototype.transform = function transform(program) {
    _default2["default"].prototype.transform.apply(this, arguments);

    var hoistDeclarators = [];
    var moduleName = this.getModuleName();
    var moduleNameLiteral = t.literal(moduleName);

    var block = t.blockStatement(program.body);

    var runner = util.template("system", {
      MODULE_DEPENDENCIES: t.arrayExpression(this.buildDependencyLiterals()),
      EXPORT_IDENTIFIER: this.exportIdentifier,
      MODULE_NAME: moduleNameLiteral,
      SETTERS: this._buildRunnerSetters(block, hoistDeclarators),
      EXECUTE: t.functionExpression(null, [], block)
    }, true);

    var handlerBody = runner.expression.arguments[2].body.body;
    if (!moduleName) runner.expression.arguments.shift();

    var returnStatement = handlerBody.pop();

    // hoist up all variable declarations
    this.file.scope.traverse(block, hoistVariablesVisitor, {
      formatter: this,
      hoistDeclarators: hoistDeclarators
    });

    if (hoistDeclarators.length) {
      var hoistDeclar = t.variableDeclaration("var", hoistDeclarators);
      hoistDeclar._blockHoist = true;
      handlerBody.unshift(hoistDeclar);
    }

    // hoist up function declarations for circular references
    this.file.scope.traverse(block, hoistFunctionsVisitor, {
      formatter: this,
      handlerBody: handlerBody
    });

    handlerBody.push(returnStatement);

    program.body = [runner];
  };

  return SystemFormatter;
})(_amd2["default"]);

exports["default"] = SystemFormatter;
module.exports = exports["default"];
},{"../../helpers/object":45,"../../types":169,"../../util":173,"./_default":72,"./amd":75,"lodash/array/last":326,"lodash/collection/each":330,"lodash/collection/map":333}],81:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _umd = require("./umd");

var _umd2 = _interopRequireDefault(_umd);

var _strict = require("./_strict");

var _strict2 = _interopRequireDefault(_strict);

exports["default"] = (0, _strict2["default"])(_umd2["default"]);
module.exports = exports["default"];
},{"./_strict":73,"./umd":82}],82:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) subClass.__proto__ = superClass; }

var _default = require("./_default");

var _default2 = _interopRequireDefault(_default);

var _amd = require("./amd");

var _amd2 = _interopRequireDefault(_amd);

var _lodashObjectValues = require("lodash/object/values");

var _lodashObjectValues2 = _interopRequireDefault(_lodashObjectValues);

var _path = require("path");

var _path2 = _interopRequireDefault(_path);

var _util = require("../../util");

var util = _interopRequireWildcard(_util);

var _types = require("../../types");

var t = _interopRequireWildcard(_types);

var UMDFormatter = (function (_AMDFormatter) {
  function UMDFormatter() {
    _classCallCheck(this, UMDFormatter);

    if (_AMDFormatter != null) {
      _AMDFormatter.apply(this, arguments);
    }
  }

  _inherits(UMDFormatter, _AMDFormatter);

  UMDFormatter.prototype.transform = function transform(program) {
    _default2["default"].prototype.transform.apply(this, arguments);

    var body = program.body;

    // build an array of module names

    var names = [];
    for (var _name in this.ids) {
      names.push(t.literal(_name));
    }

    // factory

    var ids = (0, _lodashObjectValues2["default"])(this.ids);
    var args = [t.identifier("exports")];
    if (this.passModuleArg) args.push(t.identifier("module"));
    args = args.concat(ids);

    var factory = t.functionExpression(null, args, t.blockStatement(body));

    // amd

    var defineArgs = [t.literal("exports")];
    if (this.passModuleArg) defineArgs.push(t.literal("module"));
    defineArgs = defineArgs.concat(names);
    defineArgs = [t.arrayExpression(defineArgs)];

    // common

    var testExports = util.template("test-exports");
    var testModule = util.template("test-module");
    var commonTests = this.passModuleArg ? t.logicalExpression("&&", testExports, testModule) : testExports;

    var commonArgs = [t.identifier("exports")];
    if (this.passModuleArg) commonArgs.push(t.identifier("module"));
    commonArgs = commonArgs.concat(names.map(function (name) {
      return t.callExpression(t.identifier("require"), [name]);
    }));

    // globals

    var browserArgs = [];
    if (this.passModuleArg) browserArgs.push(t.identifier("mod"));

    for (var _name2 in this.ids) {
      var id = this.defaultIds[_name2] || t.identifier(t.toIdentifier(_path2["default"].basename(_name2, _path2["default"].extname(_name2))));
      browserArgs.push(t.memberExpression(t.identifier("global"), id));
    }

    //

    var moduleName = this.getModuleName();
    if (moduleName) defineArgs.unshift(t.literal(moduleName));

    //
    var globalArg = this.file.opts.basename;
    if (moduleName) globalArg = moduleName;
    globalArg = t.identifier(t.toIdentifier(globalArg));

    var runner = util.template("umd-runner-body", {
      AMD_ARGUMENTS: defineArgs,
      COMMON_TEST: commonTests,
      COMMON_ARGUMENTS: commonArgs,
      BROWSER_ARGUMENTS: browserArgs,
      GLOBAL_ARG: globalArg
    });

    //

    program.body = [t.expressionStatement(t.callExpression(runner, [t.thisExpression(), factory]))];
  };

  return UMDFormatter;
})(_amd2["default"]);

exports["default"] = UMDFormatter;
module.exports = exports["default"];
},{"../../types":169,"../../util":173,"./_default":72,"./amd":75,"lodash/object/values":424,"path":199}],83:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var _lodashCollectionIncludes = require("lodash/collection/includes");

var _lodashCollectionIncludes2 = _interopRequireDefault(_lodashCollectionIncludes);

var _traversal = require("../traversal");

var _traversal2 = _interopRequireDefault(_traversal);

/**
 * This class is responsible for traversing over the provided `File`s
 * AST and running it's parent transformers handlers over it.
 */

var TransformerPass = (function () {
  function TransformerPass(file, transformer) {
    _classCallCheck(this, TransformerPass);

    this.transformer = transformer;
    this.handlers = transformer.handlers;
    this.file = file;
    this.ran = false;
    this.key = transformer.key;
  }

  TransformerPass.prototype.canTransform = function canTransform() {
    return this.file.transformerDependencies[this.key] || this.file.pipeline.canTransform(this.transformer, this.file.opts);
  };

  TransformerPass.prototype.transform = function transform() {
    var file = this.file;

    file.log.debug("Start transformer " + this.key);

    (0, _traversal2["default"])(file.ast, this.handlers, file.scope, file);

    file.log.debug("Finish transformer " + this.key);

    this.ran = true;
  };

  return TransformerPass;
})();

exports["default"] = TransformerPass;
module.exports = exports["default"];
},{"../traversal":157,"lodash/collection/includes":332}],84:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var _transformer = require("./transformer");

var _transformer2 = _interopRequireDefault(_transformer);

var _helpersNormalizeAst = require("../helpers/normalize-ast");

var _helpersNormalizeAst2 = _interopRequireDefault(_helpersNormalizeAst);

var _lodashObjectAssign = require("lodash/object/assign");

var _lodashObjectAssign2 = _interopRequireDefault(_lodashObjectAssign);

var _helpersObject = require("../helpers/object");

var _helpersObject2 = _interopRequireDefault(_helpersObject);

var _file = require("./file");

var _file2 = _interopRequireDefault(_file);

var TransformerPipeline = (function () {
  function TransformerPipeline() {
    _classCallCheck(this, TransformerPipeline);

    this.transformers = (0, _helpersObject2["default"])();
    this.namespaces = (0, _helpersObject2["default"])();
    this.deprecated = (0, _helpersObject2["default"])();
    this.aliases = (0, _helpersObject2["default"])();
    this.filters = [];
  }

  TransformerPipeline.prototype.addTransformers = function addTransformers(transformers) {
    for (var key in transformers) {
      this.addTransformer(key, transformers[key]);
    }
    return this;
  };

  TransformerPipeline.prototype.addTransformer = function addTransformer(key, transformer) {
    if (this.transformers[key]) throw new Error(); // todo: error

    var namespace = key.split(".")[0];
    this.namespaces[namespace] = this.namespaces[namespace] || [];
    this.namespaces[namespace].push(key);
    this.namespaces[key] = namespace;

    this.transformers[key] = new _transformer2["default"](key, transformer);
  };

  TransformerPipeline.prototype.addAliases = function addAliases(names) {
    (0, _lodashObjectAssign2["default"])(this.aliases, names);
    return this;
  };

  TransformerPipeline.prototype.addDeprecated = function addDeprecated(names) {
    (0, _lodashObjectAssign2["default"])(this.deprecated, names);
    return this;
  };

  TransformerPipeline.prototype.addFilter = function addFilter(filter) {
    this.filters.push(filter);
    return this;
  };

  TransformerPipeline.prototype.canTransform = function canTransform(transformer, fileOpts) {
    if (transformer.metadata.plugin) return true;

    var _arr = this.filters;
    for (var _i = 0; _i < _arr.length; _i++) {
      var filter = _arr[_i];
      var result = filter(transformer, fileOpts);
      if (result != null) return result;
    }

    return true;
  };

  TransformerPipeline.prototype.transform = function transform(code, opts) {
    var file = new _file2["default"](opts, this);
    return file.wrap(code, function () {
      file.addCode(code, true);
    });
  };

  TransformerPipeline.prototype.transformFromAst = function transformFromAst(ast, code, opts) {
    ast = (0, _helpersNormalizeAst2["default"])(ast);

    var file = new _file2["default"](opts, this);
    return file.wrap(code, function () {
      file.addCode(code);
      file.addAst(ast);
    });
  };

  TransformerPipeline.prototype._ensureTransformerNames = function _ensureTransformerNames(type, rawKeys) {
    var keys = [];

    for (var i = 0; i < rawKeys.length; i++) {
      var key = rawKeys[i];

      var deprecatedKey = this.deprecated[key];
      var aliasKey = this.aliases[key];
      if (aliasKey) {
        keys.push(aliasKey);
      } else if (deprecatedKey) {
        // deprecated key, remap it to the new one
        console.error("[BABEL] The transformer " + key + " has been renamed to " + deprecatedKey);
        rawKeys.push(deprecatedKey);
      } else if (this.transformers[key]) {
        // valid key
        keys.push(key);
      } else if (this.namespaces[key]) {
        // namespace, append all transformers within this namespace
        keys = keys.concat(this.namespaces[key]);
      } else {
        // invalid key
        throw new ReferenceError("Unknown transformer " + key + " specified in " + type);
      }
    }

    return keys;
  };

  return TransformerPipeline;
})();

exports["default"] = TransformerPipeline;
module.exports = exports["default"];
},{"../helpers/normalize-ast":44,"../helpers/object":45,"./file":52,"./transformer":85,"lodash/object/assign":417}],85:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var _transformerPass = require("./transformer-pass");

var _transformerPass2 = _interopRequireDefault(_transformerPass);

var _messages = require("../messages");

var messages = _interopRequireWildcard(_messages);

var _lodashLangIsFunction = require("lodash/lang/isFunction");

var _lodashLangIsFunction2 = _interopRequireDefault(_lodashLangIsFunction);

var _traversal = require("../traversal");

var _traversal2 = _interopRequireDefault(_traversal);

var _lodashLangIsObject = require("lodash/lang/isObject");

var _lodashLangIsObject2 = _interopRequireDefault(_lodashLangIsObject);

var _lodashObjectAssign = require("lodash/object/assign");

var _lodashObjectAssign2 = _interopRequireDefault(_lodashObjectAssign);

var _acorn = require("../../acorn");

var acorn = _interopRequireWildcard(_acorn);

var _file = require("./file");

var _file2 = _interopRequireDefault(_file);

var _lodashCollectionEach = require("lodash/collection/each");

var _lodashCollectionEach2 = _interopRequireDefault(_lodashCollectionEach);

/**
 * This is the class responsible for normalising a transformers handlers
 * as well as constructing a `TransformerPass` that is responsible for
 * actually running the transformer over the provided `File`.
 */

var Transformer = (function () {
  function Transformer(transformerKey, transformer) {
    _classCallCheck(this, Transformer);

    transformer = (0, _lodashObjectAssign2["default"])({}, transformer);

    var take = function take(key) {
      var val = transformer[key];
      delete transformer[key];
      return val;
    };

    this.manipulateOptions = take("manipulateOptions");
    this.metadata = take("metadata") || {};
    this.dependencies = this.metadata.dependencies || [];
    this.parser = take("parser");
    this.post = take("post");
    this.pre = take("pre");

    //

    if (this.metadata.stage != null) {
      this.metadata.optional = true;
    }

    //

    this.handlers = this.normalize(transformer);
    this.key = transformerKey;
  }

  Transformer.prototype.normalize = function normalize(transformer) {
    var _this = this;

    if ((0, _lodashLangIsFunction2["default"])(transformer)) {
      transformer = { ast: transformer };
    }

    _traversal2["default"].explode(transformer);

    (0, _lodashCollectionEach2["default"])(transformer, function (fns, type) {
      // hidden property
      if (type[0] === "_") {
        _this[type] = fns;
        return;
      }

      if (type === "enter" || type === "exit") return;

      if ((0, _lodashLangIsFunction2["default"])(fns)) fns = { enter: fns };

      if (!(0, _lodashLangIsObject2["default"])(fns)) return;

      if (!fns.enter) fns.enter = function () {};
      if (!fns.exit) fns.exit = function () {};

      transformer[type] = fns;
    });

    return transformer;
  };

  Transformer.prototype.buildPass = function buildPass(file) {
    // validate Transformer instance
    if (!(file instanceof _file2["default"])) {
      throw new TypeError(messages.get("transformerNotFile", this.key));
    }

    return new _transformerPass2["default"](file, this);
  };

  return Transformer;
})();

exports["default"] = Transformer;
module.exports = exports["default"];
},{"../../acorn":1,"../messages":47,"../traversal":157,"./file":52,"./transformer-pass":83,"lodash/collection/each":330,"lodash/lang/isFunction":408,"lodash/lang/isObject":411,"lodash/object/assign":417}],86:[function(require,module,exports){
module.exports={
  "useStrict": "strict",
  "es5.runtime": "runtime",
  "es6.runtime": "runtime"
}

},{}],87:[function(require,module,exports){
module.exports={
  "selfContained": "runtime",
  "unicode-regex": "regex.unicode",
  "spec.typeofSymbol": "es6.spec.symbols",
  "es6.symbols": "es6.spec.symbols",
  "es6.blockScopingTDZ": "es6.spec.blockScoping",

  "utility.inlineExpressions": "minification.inlineExpressions",
  "utility.deadCodeElimination": "minification.deadCodeElimination",
  "utility.removeConsoleCalls": "minification.removeConsole",
  "utility.removeDebugger": "minification.removeDebugger"
}

},{}],88:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

var metadata = {
  group: "builtin-trailing"
};

exports.metadata = metadata;
var MemberExpression = {
  exit: function exit(node) {
    var prop = node.property;
    if (!node.computed && t.isIdentifier(prop) && !t.isValidIdentifier(prop.name)) {
      // foo.default -> foo["default"]
      node.property = t.literal(prop.name);
      node.computed = true;
    }
  }
};
exports.MemberExpression = MemberExpression;
},{"../../../types":169}],89:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

var metadata = {
  group: "builtin-trailing"
};

exports.metadata = metadata;
var Property = {
  exit: function exit(node) {
    var key = node.key;
    if (!node.computed && t.isIdentifier(key) && !t.isValidIdentifier(key.name)) {
      // default: "bar" -> "default": "bar"
      node.key = t.literal(key.name);
    }
  }
};
exports.Property = Property;
},{"../../../types":169}],90:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.ObjectExpression = ObjectExpression;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _helpersDefineMap = require("../../helpers/define-map");

var defineMap = _interopRequireWildcard(_helpersDefineMap);

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

function ObjectExpression(node, parent, scope, file) {
  var mutatorMap = {};
  var hasAny = false;

  node.properties = node.properties.filter(function (prop) {
    if (prop.kind === "get" || prop.kind === "set") {
      hasAny = true;
      defineMap.push(mutatorMap, prop, prop.kind, file);
      return false;
    } else {
      return true;
    }
  });

  if (!hasAny) return;

  return t.callExpression(t.memberExpression(t.identifier("Object"), t.identifier("defineProperties")), [node, defineMap.toDefineObject(mutatorMap)]);
}
},{"../../../types":169,"../../helpers/define-map":61}],91:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.ArrowFunctionExpression = ArrowFunctionExpression;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

function ArrowFunctionExpression(node) {
  t.ensureBlock(node);

  node.expression = false;
  node.type = "FunctionExpression";
  node.shadow = true;
}
},{"../../../types":169}],92:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.VariableDeclaration = VariableDeclaration;
exports.Loop = Loop;
exports.BlockStatement = BlockStatement;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var _traversal = require("../../../traversal");

var _traversal2 = _interopRequireDefault(_traversal);

var _helpersObject = require("../../../helpers/object");

var _helpersObject2 = _interopRequireDefault(_helpersObject);

var _util = require("../../../util");

var util = _interopRequireWildcard(_util);

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

var _lodashObjectValues = require("lodash/object/values");

var _lodashObjectValues2 = _interopRequireDefault(_lodashObjectValues);

var _lodashObjectExtend = require("lodash/object/extend");

var _lodashObjectExtend2 = _interopRequireDefault(_lodashObjectExtend);

function isLet(node, parent) {
  if (!t.isVariableDeclaration(node)) return false;
  if (node._let) return true;
  if (node.kind !== "let") return false;

  // https://github.com/babel/babel/issues/255
  if (isLetInitable(node, parent)) {
    for (var i = 0; i < node.declarations.length; i++) {
      var declar = node.declarations[i];
      declar.init = declar.init || t.identifier("undefined");
    }
  }

  node._let = true;
  node.kind = "var";
  return true;
}

function isLetInitable(node, parent) {
  return !t.isFor(parent) || !t.isFor(parent, { left: node });
}

function isVar(node, parent) {
  return t.isVariableDeclaration(node, { kind: "var" }) && !isLet(node, parent);
}

function standardizeLets(declars) {
  var _arr = declars;

  for (var _i = 0; _i < _arr.length; _i++) {
    var declar = _arr[_i];
    delete declar._let;
  }
}

var metadata = {
  group: "builtin-advanced"
};

exports.metadata = metadata;

function VariableDeclaration(node, parent, scope, file) {
  if (!isLet(node, parent)) return;

  if (isLetInitable(node) && file.transformers["es6.spec.blockScoping"].canTransform()) {
    var nodes = [node];

    for (var i = 0; i < node.declarations.length; i++) {
      var decl = node.declarations[i];
      if (decl.init) {
        var assign = t.assignmentExpression("=", decl.id, decl.init);
        assign._ignoreBlockScopingTDZ = true;
        nodes.push(t.expressionStatement(assign));
      }
      decl.init = file.addHelper("temporal-undefined");
    }

    node._blockHoist = 2;

    return nodes;
  }
}

function Loop(node, parent, scope, file) {
  var init = node.left || node.init;
  if (isLet(init, node)) {
    t.ensureBlock(node);
    node.body._letDeclarators = [init];
  }

  var blockScoping = new BlockScoping(this, this.get("body"), parent, scope, file);
  return blockScoping.run();
}

function BlockStatement(block, parent, scope, file) {
  if (!t.isLoop(parent)) {
    var blockScoping = new BlockScoping(null, this, parent, scope, file);
    blockScoping.run();
  }
}

exports.Program = BlockStatement;

function replace(node, parent, scope, remaps) {
  if (!t.isReferencedIdentifier(node, parent)) return;

  var remap = remaps[node.name];
  if (!remap) return;

  var ownBinding = scope.getBindingIdentifier(node.name);
  if (ownBinding === remap.binding) {
    node.name = remap.uid;
  } else {
    // scope already has it's own binding that doesn't
    // match the one we have a stored replacement for
    if (this) this.skip();
  }
}

var replaceVisitor = {
  enter: replace
};

function traverseReplace(node, parent, scope, remaps) {
  replace(node, parent, scope, remaps);
  scope.traverse(node, replaceVisitor, remaps);
}

var letReferenceBlockVisitor = {
  Function: function Function(node, parent, scope, state) {
    this.traverse(letReferenceFunctionVisitor, state);
    return this.skip();
  }
};

var letReferenceFunctionVisitor = {
  ReferencedIdentifier: function ReferencedIdentifier(node, parent, scope, state) {
    var ref = state.letReferences[node.name];

    // not a part of our scope
    if (!ref) return;

    // this scope has a variable with the same name so it couldn't belong
    // to our let scope
    if (scope.getBindingIdentifier(node.name) !== ref) return;

    state.closurify = true;
  }
};

var hoistVarDeclarationsVisitor = {
  enter: function enter(node, parent, scope, self) {
    if (this.isForStatement()) {
      if (isVar(node.init, node)) {
        var nodes = self.pushDeclar(node.init);
        if (nodes.length === 1) {
          node.init = nodes[0];
        } else {
          node.init = t.sequenceExpression(nodes);
        }
      }
    } else if (this.isFor()) {
      if (isVar(node.left, node)) {
        node.left = node.left.declarations[0].id;
      }
    } else if (isVar(node, parent)) {
      return self.pushDeclar(node).map(t.expressionStatement);
    } else if (this.isFunction()) {
      return this.skip();
    }
  }
};

var loopLabelVisitor = {
  LabeledStatement: function LabeledStatement(node, parent, scope, state) {
    state.innerLabels.push(node.label.name);
  }
};

var continuationVisitor = {
  enter: function enter(node, parent, scope, state) {
    if (this.isAssignmentExpression() || this.isUpdateExpression()) {
      var bindings = this.getBindingIdentifiers();
      for (var name in bindings) {
        if (state.outsideReferences[name] !== scope.getBindingIdentifier(name)) continue;
        state.reassignments[name] = true;
      }
    }
  }
};

var loopNodeTo = function loopNodeTo(node) {
  if (t.isBreakStatement(node)) {
    return "break";
  } else if (t.isContinueStatement(node)) {
    return "continue";
  }
};

var loopVisitor = {
  Loop: function Loop(node, parent, scope, state) {
    var oldIgnoreLabeless = state.ignoreLabeless;
    state.ignoreLabeless = true;
    this.traverse(loopVisitor, state);
    state.ignoreLabeless = oldIgnoreLabeless;
    this.skip();
  },

  Function: function Function() {
    this.skip();
  },

  SwitchCase: function SwitchCase(node, parent, scope, state) {
    var oldInSwitchCase = state.inSwitchCase;
    state.inSwitchCase = true;
    this.traverse(loopVisitor, state);
    state.inSwitchCase = oldInSwitchCase;
    this.skip();
  },

  enter: function enter(node, parent, scope, state) {
    var replace;
    var loopText = loopNodeTo(node);

    if (loopText) {
      if (node.label) {
        // we shouldn't be transforming this because it exists somewhere inside
        if (state.innerLabels.indexOf(node.label.name) >= 0) {
          return;
        }

        loopText = "" + loopText + "|" + node.label.name;
      } else {
        // we shouldn't be transforming these statements because
        // they don't refer to the actual loop we're scopifying
        if (state.ignoreLabeless) return;

        //
        if (state.inSwitchCase) return;

        // break statements mean something different in this context
        if (t.isBreakStatement(node) && t.isSwitchCase(parent)) return;
      }

      state.hasBreakContinue = true;
      state.map[loopText] = node;
      replace = t.literal(loopText);
    }

    if (this.isReturnStatement()) {
      state.hasReturn = true;
      replace = t.objectExpression([t.property("init", t.identifier("v"), node.argument || t.identifier("undefined"))]);
    }

    if (replace) {
      replace = t.returnStatement(replace);
      this.skip();
      return t.inherits(replace, node);
    }
  }
};

var BlockScoping = (function () {

  /**
   * Description
   */

  function BlockScoping(loopPath, blockPath, parent, scope, file) {
    _classCallCheck(this, BlockScoping);

    this.parent = parent;
    this.scope = scope;
    this.file = file;

    this.blockPath = blockPath;
    this.block = blockPath.node;

    this.outsideLetReferences = (0, _helpersObject2["default"])();
    this.hasLetReferences = false;
    this.letReferences = this.block._letReferences = (0, _helpersObject2["default"])();
    this.body = [];

    if (loopPath) {
      this.loopParent = loopPath.parent;
      this.loopLabel = t.isLabeledStatement(this.loopParent) && this.loopParent.label;
      this.loopPath = loopPath;
      this.loop = loopPath.node;
    }
  }

  /**
   * Start the ball rolling.
   */

  BlockScoping.prototype.run = function run() {
    var block = this.block;
    if (block._letDone) return;
    block._letDone = true;

    var needsClosure = this.getLetReferences();

    // this is a block within a `Function/Program` so we can safely leave it be
    if (t.isFunction(this.parent) || t.isProgram(this.block)) return;

    // we can skip everything
    if (!this.hasLetReferences) return;

    if (needsClosure) {
      this.wrapClosure();
    } else {
      this.remap();
    }

    if (this.loopLabel && !t.isLabeledStatement(this.loopParent)) {
      return t.labeledStatement(this.loopLabel, this.loop);
    }
  };

  /**
   * Description
   */

  BlockScoping.prototype.remap = function remap() {
    var hasRemaps = false;
    var letRefs = this.letReferences;
    var scope = this.scope;

    // alright, so since we aren't wrapping this block in a closure
    // we have to check if any of our let variables collide with
    // those in upper scopes and then if they do, generate a uid
    // for them and replace all references with it
    var remaps = (0, _helpersObject2["default"])();

    for (var key in letRefs) {
      // just an Identifier node we collected in `getLetReferences`
      // this is the defining identifier of a declaration
      var ref = letRefs[key];

      if (scope.parentHasBinding(key) || scope.hasGlobal(key)) {
        var uid = scope.generateUidIdentifier(ref.name).name;
        ref.name = uid;

        hasRemaps = true;
        remaps[key] = remaps[uid] = {
          binding: ref,
          uid: uid
        };
      }
    }

    if (!hasRemaps) return;

    //

    var loop = this.loop;
    if (loop) {
      traverseReplace(loop.right, loop, scope, remaps);
      traverseReplace(loop.test, loop, scope, remaps);
      traverseReplace(loop.update, loop, scope, remaps);
    }

    this.blockPath.traverse(replaceVisitor, remaps);
  };

  /**
   * Description
   */

  BlockScoping.prototype.wrapClosure = function wrapClosure() {
    var block = this.block;

    var outsideRefs = this.outsideLetReferences;

    // remap loop heads with colliding variables
    if (this.loop) {
      for (var name in outsideRefs) {
        var id = outsideRefs[name];

        if (this.scope.hasGlobal(id.name) || this.scope.parentHasBinding(id.name)) {
          delete outsideRefs[id.name];
          delete this.letReferences[id.name];

          this.scope.rename(id.name);

          this.letReferences[id.name] = id;
          outsideRefs[id.name] = id;
        }
      }
    }

    // if we're inside of a for loop then we search to see if there are any
    // `break`s, `continue`s, `return`s etc
    this.has = this.checkLoop();

    // hoist var references to retain scope
    this.hoistVarDeclarations();

    // turn outsideLetReferences into an array
    var params = (0, _lodashObjectValues2["default"])(outsideRefs);
    var args = (0, _lodashObjectValues2["default"])(outsideRefs);

    // build the closure that we're going to wrap the block with
    var fn = t.functionExpression(null, params, t.blockStatement(block.body));
    fn.shadow = true;

    // continuation
    this.addContinuations(fn);

    // replace the current block body with the one we're going to build
    block.body = this.body;

    var ref = fn;

    if (this.loop) {
      ref = this.scope.generateUidIdentifier("loop");
      this.loopPath.insertBefore(t.variableDeclaration("var", [t.variableDeclarator(ref, fn)]));
    }

    // build a call and a unique id that we can assign the return value to
    var call = t.callExpression(ref, args);
    var ret = this.scope.generateUidIdentifier("ret");

    // handle generators
    var hasYield = _traversal2["default"].hasType(fn.body, this.scope, "YieldExpression", t.FUNCTION_TYPES);
    if (hasYield) {
      fn.generator = true;
      call = t.yieldExpression(call, true);
    }

    // handlers async functions
    var hasAsync = _traversal2["default"].hasType(fn.body, this.scope, "AwaitExpression", t.FUNCTION_TYPES);
    if (hasAsync) {
      fn.async = true;
      call = t.awaitExpression(call);
    }

    this.buildClosure(ret, call);
  };

  /**
   * Push the closure to the body.
   */

  BlockScoping.prototype.buildClosure = function buildClosure(ret, call) {
    var has = this.has;
    if (has.hasReturn || has.hasBreakContinue) {
      this.buildHas(ret, call);
    } else {
      this.body.push(t.expressionStatement(call));
    }
  };

  /**
   * If any of the outer let variables are reassigned then we need to rename them in
   * the closure so we can get direct access to the outer variable to continue the
   * iteration with bindings based on each iteration.
   *
   * Reference: https://github.com/babel/babel/issues/1078
   */

  BlockScoping.prototype.addContinuations = function addContinuations(fn) {
    var state = {
      reassignments: {},
      outsideReferences: this.outsideLetReferences
    };

    this.scope.traverse(fn, continuationVisitor, state);

    for (var i = 0; i < fn.params.length; i++) {
      var param = fn.params[i];
      if (!state.reassignments[param.name]) continue;

      var newParam = this.scope.generateUidIdentifier(param.name);
      fn.params[i] = newParam;

      this.scope.rename(param.name, newParam.name, fn);

      // assign outer reference as it's been modified internally and needs to be retained
      fn.body.body.push(t.expressionStatement(t.assignmentExpression("=", param, newParam)));
    }
  };

  /**
   * Description
   */

  BlockScoping.prototype.getLetReferences = function getLetReferences() {
    var block = this.block;

    var declarators = block._letDeclarators || [];

    //
    for (var i = 0; i < declarators.length; i++) {
      var declar = declarators[i];
      (0, _lodashObjectExtend2["default"])(this.outsideLetReferences, t.getBindingIdentifiers(declar));
    }

    //
    if (block.body) {
      for (var i = 0; i < block.body.length; i++) {
        var declar = block.body[i];
        if (isLet(declar, block)) {
          declarators = declarators.concat(declar.declarations);
        }
      }
    }

    //
    for (var i = 0; i < declarators.length; i++) {
      var declar = declarators[i];
      var keys = t.getBindingIdentifiers(declar);
      (0, _lodashObjectExtend2["default"])(this.letReferences, keys);
      this.hasLetReferences = true;
    }

    // no let references so we can just quit
    if (!this.hasLetReferences) return;

    // set let references to plain var references
    standardizeLets(declarators);

    var state = {
      letReferences: this.letReferences,
      closurify: false
    };

    // traverse through this block, stopping on functions and checking if they
    // contain any local let references
    this.blockPath.traverse(letReferenceBlockVisitor, state);

    return state.closurify;
  };

  /**
   * If we're inside of a loop then traverse it and check if it has one of
   * the following node types `ReturnStatement`, `BreakStatement`,
   * `ContinueStatement` and replace it with a return value that we can track
   * later on.
   *
   * @returns {Object}
   */

  BlockScoping.prototype.checkLoop = function checkLoop() {
    var state = {
      hasBreakContinue: false,
      ignoreLabeless: false,
      inSwitchCase: false,
      innerLabels: [],
      hasReturn: false,
      isLoop: !!this.loop,
      map: {}
    };

    this.blockPath.traverse(loopLabelVisitor, state);
    this.blockPath.traverse(loopVisitor, state);

    return state;
  };

  /**
   * Hoist all var declarations in this block to before it so they retain scope
   * once we wrap everything in a closure.
   */

  BlockScoping.prototype.hoistVarDeclarations = function hoistVarDeclarations() {
    this.blockPath.traverse(hoistVarDeclarationsVisitor, this);
  };

  /**
   * Turn a `VariableDeclaration` into an array of `AssignmentExpressions` with
   * their declarations hoisted to before the closure wrapper.
   */

  BlockScoping.prototype.pushDeclar = function pushDeclar(node) {
    var declars = [];
    var names = t.getBindingIdentifiers(node);
    for (var name in names) {
      declars.push(t.variableDeclarator(names[name]));
    }

    this.body.push(t.variableDeclaration(node.kind, declars));

    var replace = [];

    for (var i = 0; i < node.declarations.length; i++) {
      var declar = node.declarations[i];
      if (!declar.init) continue;

      var expr = t.assignmentExpression("=", declar.id, declar.init);
      replace.push(t.inherits(expr, declar));
    }

    return replace;
  };

  /**
   * Description
   */

  BlockScoping.prototype.buildHas = function buildHas(ret, call) {
    var body = this.body;

    body.push(t.variableDeclaration("var", [t.variableDeclarator(ret, call)]));

    var loop = this.loop;
    var retCheck;
    var has = this.has;
    var cases = [];

    if (has.hasReturn) {
      // typeof ret === "object"
      retCheck = util.template("let-scoping-return", {
        RETURN: ret
      });
    }

    if (has.hasBreakContinue) {
      for (var key in has.map) {
        cases.push(t.switchCase(t.literal(key), [has.map[key]]));
      }

      if (has.hasReturn) {
        cases.push(t.switchCase(null, [retCheck]));
      }

      if (cases.length === 1) {
        var single = cases[0];
        body.push(this.file.attachAuxiliaryComment(t.ifStatement(t.binaryExpression("===", ret, single.test), single.consequent[0])));
      } else {
        // https://github.com/babel/babel/issues/998
        for (var i = 0; i < cases.length; i++) {
          var caseConsequent = cases[i].consequent[0];
          if (t.isBreakStatement(caseConsequent) && !caseConsequent.label) {
            caseConsequent.label = this.loopLabel = this.loopLabel || this.file.scope.generateUidIdentifier("loop");
          }
        }

        body.push(this.file.attachAuxiliaryComment(t.switchStatement(ret, cases)));
      }
    } else {
      if (has.hasReturn) {
        body.push(this.file.attachAuxiliaryComment(retCheck));
      }
    }
  };

  return BlockScoping;
})();
},{"../../../helpers/object":45,"../../../traversal":157,"../../../types":169,"../../../util":173,"lodash/object/extend":419,"lodash/object/values":424}],93:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.ClassDeclaration = ClassDeclaration;
exports.ClassExpression = ClassExpression;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var _helpersMemoiseDecorators = require("../../helpers/memoise-decorators");

var _helpersMemoiseDecorators2 = _interopRequireDefault(_helpersMemoiseDecorators);

var _helpersReplaceSupers = require("../../helpers/replace-supers");

var _helpersReplaceSupers2 = _interopRequireDefault(_helpersReplaceSupers);

var _helpersNameMethod = require("../../helpers/name-method");

var nameMethod = _interopRequireWildcard(_helpersNameMethod);

var _helpersDefineMap = require("../../helpers/define-map");

var defineMap = _interopRequireWildcard(_helpersDefineMap);

var _messages = require("../../../messages");

var messages = _interopRequireWildcard(_messages);

var _util = require("../../../util");

var util = _interopRequireWildcard(_util);

var _traversal = require("../../../traversal");

var _traversal2 = _interopRequireDefault(_traversal);

var _lodashCollectionEach = require("lodash/collection/each");

var _lodashCollectionEach2 = _interopRequireDefault(_lodashCollectionEach);

var _lodashObjectHas = require("lodash/object/has");

var _lodashObjectHas2 = _interopRequireDefault(_lodashObjectHas);

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

var PROPERTY_COLLISION_METHOD_NAME = "__initializeProperties";

function ClassDeclaration(node, parent, scope, file) {
  return t.variableDeclaration("let", [t.variableDeclarator(node.id, t.toExpression(node))]);
}

function ClassExpression(node, parent, scope, file) {
  return new ClassTransformer(this, file).run();
}

var collectPropertyReferencesVisitor = {
  Identifier: {
    enter: function enter(node, parent, scope, state) {
      if (this.parentPath.isClassProperty({ key: node })) {
        return;
      }

      if (this.isReferenced() && scope.getBinding(node.name) === state.scope.getBinding(node.name)) {
        state.references[node.name] = true;
      }
    }
  }
};

var constructorVisitor = {
  ThisExpression: {
    enter: function enter(node, parent, scope, ref) {
      return ref;
    }
  },

  Function: {
    enter: function enter(node) {
      if (!node.shadow) {
        this.skip();
      }
    }
  }
};

var verifyConstructorVisitor = {
  MethodDefinition: {
    enter: function enter() {
      this.skip();
    }
  },

  Property: {
    enter: function enter(node) {
      if (node.method) this.skip();
    }
  },

  CallExpression: {
    exit: function exit(node, parent, scope, state) {
      if (this.get("callee").isSuper()) {
        state.hasBareSuper = true;
        state.bareSuper = this;

        if (!state.hasSuper) {
          throw this.errorWithNode("super call is only allowed in derived constructor");
        }
      }
    }
  },

  FunctionDeclaration: {
    enter: function enter() {
      this.skip();
    }
  },

  FunctionExpression: {
    enter: function enter() {
      this.skip();
    }
  },

  ThisExpression: {
    enter: function enter(node, parent, scope, state) {
      if (state.hasSuper && !state.hasBareSuper) {
        throw this.errorWithNode("'this' is not allowed before super()");
      }
    }
  }
};

var ClassTransformer = (function () {

  /**
   * Description
   */

  function ClassTransformer(path, file) {
    _classCallCheck(this, ClassTransformer);

    this.parent = path.parent;
    this.scope = path.scope;
    this.node = path.node;
    this.path = path;
    this.file = file;

    this.hasInstanceDescriptors = false;
    this.hasStaticDescriptors = false;

    this.instanceMutatorMap = {};
    this.staticMutatorMap = {};

    this.instancePropBody = [];
    this.instancePropRefs = {};
    this.staticPropBody = [];
    this.body = [];

    this.hasConstructor = false;
    this.hasDecorators = false;
    this.className = this.node.id;
    this.classRef = this.node.id || this.scope.generateUidIdentifier("class");

    this.superName = this.node.superClass || t.identifier("Function");
    this.hasSuper = !!this.node.superClass;

    this.isLoose = file.isLoose("es6.classes");
  }

  /**
   * Description
   *
   * @returns {Array}
   */

  ClassTransformer.prototype.run = function run() {
    var superName = this.superName;
    var className = this.className;
    var classBody = this.node.body.body;
    var classRef = this.classRef;
    var file = this.file;

    //

    var body = this.body;

    //

    var constructorBody = this.constructorBody = t.blockStatement([]);
    var constructor;

    if (this.className) {
      constructor = t.functionDeclaration(this.className, [], constructorBody);
      body.push(constructor);
    } else {
      constructor = t.functionExpression(null, [], constructorBody);
    }

    this.constructor = constructor;

    //

    var closureParams = [];
    var closureArgs = [];

    //
    if (this.hasSuper) {
      closureArgs.push(superName);

      superName = this.scope.generateUidIdentifierBasedOnNode(superName);
      closureParams.push(superName);

      this.superName = superName;
      body.push(t.expressionStatement(t.callExpression(file.addHelper("inherits"), [classRef, superName])));
    }

    //
    var decorators = this.node.decorators;
    if (decorators) {
      // create a class reference to use later on
      this.classRef = this.scope.generateUidIdentifier(classRef);

      // this is so super calls and the decorators have access to the raw function
      body.push(t.variableDeclaration("var", [t.variableDeclarator(this.classRef, classRef)]));
    }

    //
    this.buildBody();

    // make sure this class isn't directly called
    constructorBody.body.unshift(t.expressionStatement(t.callExpression(file.addHelper("class-call-check"), [t.thisExpression(), this.classRef])));

    //

    if (decorators) {
      // reverse the decorators so we execute them in the right order
      decorators = decorators.reverse();

      for (var i = 0; i < decorators.length; i++) {
        var decorator = decorators[i];

        var decoratorNode = util.template("class-decorator", {
          DECORATOR: decorator.expression,
          CLASS_REF: classRef
        }, true);
        decoratorNode.expression._ignoreModulesRemap = true;
        body.push(decoratorNode);
      }
    }

    if (this.className) {
      // named class with only a constructor
      if (body.length === 1) return t.toExpression(body[0]);
    } else {
      // infer class name if this is a nameless class expression
      constructor = nameMethod.bare(constructor, this.parent, this.scope) || constructor;

      body.unshift(t.variableDeclaration("var", [t.variableDeclarator(classRef, constructor)]));

      t.inheritsComments(body[0], this.node);
    }

    body = body.concat(this.staticPropBody);

    //

    body.push(t.returnStatement(classRef));

    return t.callExpression(t.functionExpression(null, closureParams, t.blockStatement(body)), closureArgs);
  };

  /**
   * Description
   */

  ClassTransformer.prototype.pushToMap = function pushToMap(node, enumerable) {
    var kind = arguments[2] === undefined ? "value" : arguments[2];

    var mutatorMap;
    if (node["static"]) {
      this.hasStaticDescriptors = true;
      mutatorMap = this.staticMutatorMap;
    } else {
      this.hasInstanceDescriptors = true;
      mutatorMap = this.instanceMutatorMap;
    }

    var map = defineMap.push(mutatorMap, node, kind, this.file);

    if (enumerable) {
      map.enumerable = t.literal(true);
    }

    if (map.decorators) {
      this.hasDecorators = true;
    }
  };

  /**
   * Description
   */

  ClassTransformer.prototype.buildBody = function buildBody() {
    var constructorBody = this.constructorBody;
    var constructor = this.constructor;
    var className = this.className;
    var superName = this.superName;
    var classBody = this.node.body.body;
    var body = this.body;

    var classBodyPaths = this.path.get("body").get("body");

    for (var i = 0; i < classBody.length; i++) {
      var node = classBody[i];
      var path = classBodyPaths[i];

      if (node.decorators) {
        (0, _helpersMemoiseDecorators2["default"])(node.decorators, this.scope);
      }

      if (t.isMethodDefinition(node)) {
        var isConstructor = node.kind === "constructor";
        if (isConstructor) this.verifyConstructor(path);

        var replaceSupers = new _helpersReplaceSupers2["default"]({
          methodPath: path,
          methodNode: node,
          objectRef: this.classRef,
          superRef: this.superName,
          isStatic: node["static"],
          isLoose: this.isLoose,
          scope: this.scope,
          file: this.file
        }, true);

        replaceSupers.replace();

        if (isConstructor) {
          this.pushConstructor(node, path);
        } else {
          this.pushMethod(node, path);
        }
      } else if (t.isClassProperty(node)) {
        this.pushProperty(node);
      }
    }

    // we have no constructor, but we're a derived class
    if (!this.hasConstructor && this.hasSuper) {
      var helperName = "class-super-constructor-call";
      if (this.isLoose) helperName += "-loose";
      constructorBody.body.push(util.template(helperName, {
        CLASS_NAME: this.classRef,
        SUPER_NAME: this.superName
      }, true));
    }

    //
    this.placePropertyInitializers();

    //
    if (this.userConstructor) {
      constructorBody.body = constructorBody.body.concat(this.userConstructor.body.body);
      t.inherits(this.constructor, this.userConstructor);
      t.inherits(this.constructorBody, this.userConstructor.body);
    }

    var instanceProps;
    var staticProps;
    var classHelper = "create-class";
    if (this.hasDecorators) classHelper = "create-decorated-class";

    if (this.hasInstanceDescriptors) {
      instanceProps = defineMap.toClassObject(this.instanceMutatorMap);
    }

    if (this.hasStaticDescriptors) {
      staticProps = defineMap.toClassObject(this.staticMutatorMap);
    }

    if (instanceProps || staticProps) {
      if (instanceProps) instanceProps = defineMap.toComputedObjectFromClass(instanceProps);
      if (staticProps) staticProps = defineMap.toComputedObjectFromClass(staticProps);

      var nullNode = t.literal(null);

      // (Constructor, instanceDescriptors, staticDescriptors, instanceInitializers, staticInitializers)
      var args = [this.classRef, nullNode, nullNode, nullNode, nullNode];

      if (instanceProps) args[1] = instanceProps;
      if (staticProps) args[2] = staticProps;

      if (this.instanceInitializersId) {
        args[3] = this.instanceInitializersId;
        body.unshift(this.buildObjectAssignment(this.instanceInitializersId));
      }

      if (this.staticInitializersId) {
        args[4] = this.staticInitializersId;
        body.unshift(this.buildObjectAssignment(this.staticInitializersId));
      }

      var lastNonNullIndex = 0;
      for (var i = 0; i < args.length; i++) {
        if (args[i] !== nullNode) lastNonNullIndex = i;
      }
      args = args.slice(0, lastNonNullIndex + 1);

      body.push(t.expressionStatement(t.callExpression(this.file.addHelper(classHelper), args)));
    }
  };

  ClassTransformer.prototype.buildObjectAssignment = function buildObjectAssignment(id) {
    return t.variableDeclaration("var", [t.variableDeclarator(id, t.objectExpression([]))]);
  };

  /**
   * Description
   */

  ClassTransformer.prototype.placePropertyInitializers = function placePropertyInitializers() {
    var body = this.instancePropBody;
    if (!body.length) return;

    if (this.hasPropertyCollision()) {
      var call = t.expressionStatement(t.callExpression(t.memberExpression(t.thisExpression(), t.identifier(PROPERTY_COLLISION_METHOD_NAME)), []));

      this.pushMethod(t.methodDefinition(t.identifier(PROPERTY_COLLISION_METHOD_NAME), t.functionExpression(null, [], t.blockStatement(body))), null, true);

      if (this.hasSuper) {
        this.bareSuper.insertAfter(call);
      } else {
        this.constructorBody.body.unshift(call);
      }
    } else {
      if (this.hasSuper) {
        if (this.hasConstructor) {
          this.bareSuper.insertAfter(body);
        } else {
          this.constructorBody.body = this.constructorBody.body.concat(body);
        }
      } else {
        this.constructorBody.body = body.concat(this.constructorBody.body);
      }
    }
  };

  /**
   * Description
   */

  ClassTransformer.prototype.hasPropertyCollision = function hasPropertyCollision() {
    if (this.userConstructorPath) {
      for (var name in this.instancePropRefs) {
        if (this.userConstructorPath.scope.hasOwnBinding(name)) {
          return true;
        }
      }
    }

    return false;
  };

  /**
   * Description
   */

  ClassTransformer.prototype.verifyConstructor = function verifyConstructor(path) {
    var state = {
      hasBareSuper: false,
      bareSuper: null,
      hasSuper: this.hasSuper,
      file: this.file
    };

    path.get("value").traverse(verifyConstructorVisitor, state);

    this.bareSuper = state.bareSuper;

    if (!state.hasBareSuper && this.hasSuper) {
      throw path.errorWithNode("Derived constructor must call super()");
    }
  };

  /**
   * Push a method to its respective mutatorMap.
   */

  ClassTransformer.prototype.pushMethod = function pushMethod(node, path, allowedIllegal) {
    if (!allowedIllegal && t.isLiteral(t.toComputedKey(node), { value: PROPERTY_COLLISION_METHOD_NAME })) {
      throw this.file.errorWithNode(node, messages.get("illegalMethodName", PROPERTY_COLLISION_METHOD_NAME));
    }

    if (node.kind === "method") {
      nameMethod.property(node, this.file, path ? path.get("value").scope : this.scope);

      if (this.isLoose && !node.decorators) {
        // use assignments instead of define properties for loose classes

        var classRef = this.classRef;
        if (!node["static"]) classRef = t.memberExpression(classRef, t.identifier("prototype"));
        var methodName = t.memberExpression(classRef, node.key, node.computed);

        var expr = t.expressionStatement(t.assignmentExpression("=", methodName, node.value));
        t.inheritsComments(expr, node);
        this.body.push(expr);
        return;
      }
    }

    this.pushToMap(node);
  };

  /**
   * Description
   */

  ClassTransformer.prototype.pushProperty = function pushProperty(node) {
    var key;

    this.scope.traverse(node, collectPropertyReferencesVisitor, {
      references: this.instancePropRefs,
      scope: this.scope
    });

    if (node.decorators) {
      var body = [];
      if (node.value) {
        body.push(t.returnStatement(node.value));
        node.value = t.functionExpression(null, [], t.blockStatement(body));
      } else {
        node.value = t.literal(null);
      }
      this.pushToMap(node, true, "initializer");

      var initializers;
      var body;
      var target;
      if (node["static"]) {
        initializers = this.staticInitializersId = this.staticInitializersId || this.scope.generateUidIdentifier("staticInitializers");
        body = this.staticPropBody;
        target = this.classRef;
      } else {
        initializers = this.instanceInitializersId = this.instanceInitializersId || this.scope.generateUidIdentifier("instanceInitializers");
        body = this.instancePropBody;
        target = t.thisExpression();
      }

      body.push(t.expressionStatement(t.callExpression(this.file.addHelper("define-decorated-property-descriptor"), [target, t.literal(node.key.name), initializers])));
    } else {
      if (!node.value && !node.decorators) return;

      if (node["static"]) {
        // can just be added to the static map
        this.pushToMap(node, true);
      } else if (node.value) {
        // add this to the instancePropBody which will be added after the super call in a derived constructor
        // or at the start of a constructor for a non-derived constructor
        this.instancePropBody.push(t.expressionStatement(t.assignmentExpression("=", t.memberExpression(t.thisExpression(), node.key), node.value)));
      }
    }
  };

  /**
   * Replace the constructor body of our class.
   */

  ClassTransformer.prototype.pushConstructor = function pushConstructor(method, path) {
    // https://github.com/babel/babel/issues/1077
    var fnPath = path.get("value");
    if (fnPath.scope.hasOwnBinding(this.classRef.name)) {
      fnPath.scope.rename(this.classRef.name);
    }

    var construct = this.constructor;
    var fn = method.value;

    this.userConstructorPath = fnPath;
    this.userConstructor = fn;
    this.hasConstructor = true;

    t.inheritsComments(construct, method);

    construct._ignoreUserWhitespace = true;
    construct.params = fn.params;

    t.inherits(construct.body, fn.body);
  };

  return ClassTransformer;
})();
},{"../../../messages":47,"../../../traversal":157,"../../../types":169,"../../../util":173,"../../helpers/define-map":61,"../../helpers/memoise-decorators":64,"../../helpers/name-method":65,"../../helpers/replace-supers":69,"lodash/collection/each":330,"lodash/object/has":420}],94:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.AssignmentExpression = AssignmentExpression;
exports.VariableDeclaration = VariableDeclaration;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _messages = require("../../../messages");

var messages = _interopRequireWildcard(_messages);

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

function AssignmentExpression(node, parent, scope, file) {
  var ids = this.getBindingIdentifiers();

  for (var name in ids) {
    var id = ids[name];

    var binding = scope.getBinding(name);

    // no binding exists
    if (!binding) continue;

    // not a constant
    if (binding.kind !== "const" && binding.kind !== "module") continue;

    // check if the assignment id matches the constant declaration id
    // if it does then it was the id used to initially declare the
    // constant so we can just ignore it
    if (binding.identifier === id) continue;

    throw file.errorWithNode(id, messages.get("readOnly", name));
  }
}

exports.UpdateExpression = AssignmentExpression;

function VariableDeclaration(node) {
  if (node.kind === "const") node.kind = "let";
}
},{"../../../messages":47,"../../../types":169}],95:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.ForOfStatement = ForOfStatement;
exports.Func /*tion*/ = Func;
exports.CatchClause = CatchClause;
exports.ExpressionStatement = ExpressionStatement;
exports.AssignmentExpression = AssignmentExpression;
exports.VariableDeclaration = VariableDeclaration;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var _messages = require("../../../messages");

var messages = _interopRequireWildcard(_messages);

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

var metadata = {
  group: "builtin-advanced"
};

exports.metadata = metadata;

function ForOfStatement(node, parent, scope, file) {
  var left = node.left;

  if (t.isPattern(left)) {
    // for ({ length: k } in { abc: 3 });

    var temp = scope.generateUidIdentifier("ref");

    node.left = t.variableDeclaration("var", [t.variableDeclarator(temp)]);

    t.ensureBlock(node);

    node.body.body.unshift(t.variableDeclaration("var", [t.variableDeclarator(left, temp)]));

    return;
  }

  if (!t.isVariableDeclaration(left)) return;

  var pattern = left.declarations[0].id;
  if (!t.isPattern(pattern)) return;

  var key = scope.generateUidIdentifier("ref");
  node.left = t.variableDeclaration(left.kind, [t.variableDeclarator(key, null)]);

  var nodes = [];

  var destructuring = new DestructuringTransformer({
    kind: left.kind,
    file: file,
    scope: scope,
    nodes: nodes
  });

  destructuring.init(pattern, key);

  t.ensureBlock(node);

  var block = node.body;
  block.body = nodes.concat(block.body);
}

exports.ForInStatement = ForOfStatement;

function Func(node, parent, scope, file) {
  var nodes = [];

  var hasDestructuring = false;

  node.params = node.params.map(function (pattern, i) {
    if (!t.isPattern(pattern)) return pattern;

    hasDestructuring = true;
    var ref = scope.generateUidIdentifier("ref");
    t.inherits(ref, pattern);

    var destructuring = new DestructuringTransformer({
      blockHoist: node.params.length - i,
      nodes: nodes,
      scope: scope,
      file: file,
      kind: "let"
    });
    destructuring.init(pattern, ref);

    return ref;
  });

  if (!hasDestructuring) return;

  t.ensureBlock(node);

  var block = node.body;
  block.body = nodes.concat(block.body);
}

function CatchClause(node, parent, scope, file) {
  var pattern = node.param;
  if (!t.isPattern(pattern)) return;

  var ref = scope.generateUidIdentifier("ref");
  node.param = ref;

  var nodes = [];

  var destructuring = new DestructuringTransformer({
    kind: "let",
    file: file,
    scope: scope,
    nodes: nodes
  });
  destructuring.init(pattern, ref);

  node.body.body = nodes.concat(node.body.body);
}

function ExpressionStatement(node, parent, scope, file) {
  var expr = node.expression;
  if (expr.type !== "AssignmentExpression") return;
  if (!t.isPattern(expr.left)) return;
  if (this.isCompletionRecord()) return;

  var destructuring = new DestructuringTransformer({
    operator: expr.operator,
    scope: scope,
    file: file });

  return destructuring.init(expr.left, expr.right);
}

function AssignmentExpression(node, parent, scope, file) {
  if (!t.isPattern(node.left)) return;

  var ref = scope.generateUidIdentifier("temp");

  var nodes = [];
  nodes.push(t.variableDeclaration("var", [t.variableDeclarator(ref, node.right)]));

  var destructuring = new DestructuringTransformer({
    operator: node.operator,
    file: file,
    scope: scope,
    nodes: nodes
  });

  if (t.isArrayExpression(node.right)) {
    destructuring.arrays[ref.name] = true;
  }

  destructuring.init(node.left, ref);

  nodes.push(t.expressionStatement(ref));

  return nodes;
}

function variableDeclarationHasPattern(node) {
  for (var i = 0; i < node.declarations.length; i++) {
    if (t.isPattern(node.declarations[i].id)) {
      return true;
    }
  }
  return false;
}

function VariableDeclaration(node, parent, scope, file) {
  if (t.isForInStatement(parent) || t.isForOfStatement(parent)) return;
  if (!variableDeclarationHasPattern(node)) return;

  var nodes = [];
  var declar;

  for (var i = 0; i < node.declarations.length; i++) {
    declar = node.declarations[i];

    var patternId = declar.init;
    var pattern = declar.id;

    var destructuring = new DestructuringTransformer({
      nodes: nodes,
      scope: scope,
      kind: node.kind,
      file: file
    });

    if (t.isPattern(pattern)) {
      destructuring.init(pattern, patternId);

      if (+i !== node.declarations.length - 1) {
        // we aren't the last declarator so let's just make the
        // last transformed node inherit from us
        t.inherits(nodes[nodes.length - 1], declar);
      }
    } else {
      nodes.push(t.inherits(destructuring.buildVariableAssignment(declar.id, declar.init), declar));
    }
  }

  if (!t.isProgram(parent) && !t.isBlockStatement(parent)) {
    // https://github.com/babel/babel/issues/113
    // for (let [x] = [0]; false;) {}

    declar = null;

    for (i = 0; i < nodes.length; i++) {
      node = nodes[i];
      declar = declar || t.variableDeclaration(node.kind, []);

      if (!t.isVariableDeclaration(node) && declar.kind !== node.kind) {
        throw file.errorWithNode(node, messages.get("invalidParentForThisNode"));
      }

      declar.declarations = declar.declarations.concat(node.declarations);
    }

    return declar;
  }

  return nodes;
}

function hasRest(pattern) {
  for (var i = 0; i < pattern.elements.length; i++) {
    if (t.isRestElement(pattern.elements[i])) {
      return true;
    }
  }
  return false;
}

var arrayUnpackVisitor = {
  enter: function enter(node, parent, scope, state) {
    if (this.isReferencedIdentifier() && state.bindings[node.name]) {
      state.deopt = true;
      this.stop();
    }
  }
};

var DestructuringTransformer = (function () {
  function DestructuringTransformer(opts) {
    _classCallCheck(this, DestructuringTransformer);

    this.blockHoist = opts.blockHoist;
    this.operator = opts.operator;
    this.arrays = {};
    this.nodes = opts.nodes || [];
    this.scope = opts.scope;
    this.file = opts.file;
    this.kind = opts.kind;
  }

  DestructuringTransformer.prototype.buildVariableAssignment = function buildVariableAssignment(id, init) {
    var op = this.operator;
    if (t.isMemberExpression(id)) op = "=";

    var node;

    if (op) {
      node = t.expressionStatement(t.assignmentExpression(op, id, init));
    } else {
      node = t.variableDeclaration(this.kind, [t.variableDeclarator(id, init)]);
    }

    node._blockHoist = this.blockHoist;

    return node;
  };

  DestructuringTransformer.prototype.buildVariableDeclaration = function buildVariableDeclaration(id, init) {
    var declar = t.variableDeclaration("var", [t.variableDeclarator(id, init)]);
    declar._blockHoist = this.blockHoist;
    return declar;
  };

  DestructuringTransformer.prototype.push = function push(id, init) {
    if (t.isObjectPattern(id)) {
      this.pushObjectPattern(id, init);
    } else if (t.isArrayPattern(id)) {
      this.pushArrayPattern(id, init);
    } else if (t.isAssignmentPattern(id)) {
      this.pushAssignmentPattern(id, init);
    } else {
      this.nodes.push(this.buildVariableAssignment(id, init));
    }
  };

  DestructuringTransformer.prototype.toArray = function toArray(node, count) {
    if (this.file.isLoose("es6.destructuring") || t.isIdentifier(node) && this.arrays[node.name]) {
      return node;
    } else {
      return this.scope.toArray(node, count);
    }
  };

  DestructuringTransformer.prototype.pushAssignmentPattern = function pushAssignmentPattern(pattern, valueRef) {
    // we need to assign the current value of the assignment to avoid evaluating
    // it more than once

    var tempValueRef = this.scope.generateUidIdentifierBasedOnNode(valueRef);

    var declar = t.variableDeclaration("var", [t.variableDeclarator(tempValueRef, valueRef)]);
    declar._blockHoist = this.blockHoist;
    this.nodes.push(declar);

    //

    var tempConditional = t.conditionalExpression(t.binaryExpression("===", tempValueRef, t.identifier("undefined")), pattern.right, tempValueRef);

    var left = pattern.left;
    if (t.isPattern(left)) {
      this.nodes.push(t.expressionStatement(t.assignmentExpression("=", tempValueRef, tempConditional)));
      this.push(left, tempValueRef);
    } else {
      this.nodes.push(this.buildVariableAssignment(left, tempConditional));
    }
  };

  DestructuringTransformer.prototype.pushObjectSpread = function pushObjectSpread(pattern, objRef, spreadProp, spreadPropIndex) {
    // get all the keys that appear in this object before the current spread

    var keys = [];

    for (var i = 0; i < pattern.properties.length; i++) {
      var prop = pattern.properties[i];

      // we've exceeded the index of the spread property to all properties to the
      // right need to be ignored
      if (i >= spreadPropIndex) break;

      // ignore other spread properties
      if (t.isSpreadProperty(prop)) continue;

      var key = prop.key;
      if (t.isIdentifier(key) && !prop.computed) key = t.literal(prop.key.name);
      keys.push(key);
    }

    keys = t.arrayExpression(keys);

    //

    var value = t.callExpression(this.file.addHelper("object-without-properties"), [objRef, keys]);
    this.nodes.push(this.buildVariableAssignment(spreadProp.argument, value));
  };

  DestructuringTransformer.prototype.pushObjectProperty = function pushObjectProperty(prop, propRef) {
    if (t.isLiteral(prop.key)) prop.computed = true;

    var pattern = prop.value;
    var objRef = t.memberExpression(propRef, prop.key, prop.computed);

    if (t.isPattern(pattern)) {
      this.push(pattern, objRef);
    } else {
      this.nodes.push(this.buildVariableAssignment(pattern, objRef));
    }
  };

  DestructuringTransformer.prototype.pushObjectPattern = function pushObjectPattern(pattern, objRef) {
    // https://github.com/babel/babel/issues/681

    if (!pattern.properties.length) {
      this.nodes.push(t.expressionStatement(t.callExpression(this.file.addHelper("object-destructuring-empty"), [objRef])));
    }

    // if we have more than one properties in this pattern and the objectRef is a
    // member expression then we need to assign it to a temporary variable so it's
    // only evaluated once

    if (pattern.properties.length > 1 && t.isMemberExpression(objRef)) {
      var temp = this.scope.generateUidIdentifierBasedOnNode(objRef, this.file);
      this.nodes.push(this.buildVariableDeclaration(temp, objRef));
      objRef = temp;
    }

    //

    for (var i = 0; i < pattern.properties.length; i++) {
      var prop = pattern.properties[i];
      if (t.isSpreadProperty(prop)) {
        this.pushObjectSpread(pattern, objRef, prop, i);
      } else {
        this.pushObjectProperty(prop, objRef);
      }
    }
  };

  DestructuringTransformer.prototype.canUnpackArrayPattern = function canUnpackArrayPattern(pattern, arr) {
    // not an array so there's no way we can deal with this
    if (!t.isArrayExpression(arr)) return false;

    // pattern has less elements than the array and doesn't have a rest so some
    // elements wont be evaluated
    if (pattern.elements.length > arr.elements.length) return;
    if (pattern.elements.length < arr.elements.length && !hasRest(pattern)) return false;

    for (var i = 0; i < pattern.elements.length; i++) {
      var elem = pattern.elements[i];

      // deopt on holes
      if (!elem) return false;

      // deopt on member expressions
      if (t.isMemberExpression(elem)) return false;
    }

    // deopt on reference to left side identifiers
    var bindings = t.getBindingIdentifiers(pattern);
    var state = { deopt: false, bindings: bindings };
    this.scope.traverse(arr, arrayUnpackVisitor, state);
    return !state.deopt;
  };

  DestructuringTransformer.prototype.pushUnpackedArrayPattern = function pushUnpackedArrayPattern(pattern, arr) {
    for (var i = 0; i < pattern.elements.length; i++) {
      var elem = pattern.elements[i];
      if (t.isRestElement(elem)) {
        this.push(elem.argument, t.arrayExpression(arr.elements.slice(i)));
      } else {
        this.push(elem, arr.elements[i]);
      }
    }
  };

  DestructuringTransformer.prototype.pushArrayPattern = function pushArrayPattern(pattern, arrayRef) {
    if (!pattern.elements) return;

    // optimise basic array destructuring of an array expression
    //
    // we can't do this to a pattern of unequal size to it's right hand
    // array expression as then there will be values that wont be evaluated
    //
    // eg: var [a, b] = [1, 2];

    if (this.canUnpackArrayPattern(pattern, arrayRef)) {
      return this.pushUnpackedArrayPattern(pattern, arrayRef);
    }

    // if we have a rest then we need all the elements so don't tell
    // `scope.toArray` to only get a certain amount

    var count = !hasRest(pattern) && pattern.elements.length;

    // so we need to ensure that the `arrayRef` is an array, `scope.toArray` will
    // return a locally bound identifier if it's been inferred to be an array,
    // otherwise it'll be a call to a helper that will ensure it's one

    var toArray = this.toArray(arrayRef, count);

    if (t.isIdentifier(toArray)) {
      // we've been given an identifier so it must have been inferred to be an
      // array
      arrayRef = toArray;
    } else {
      arrayRef = this.scope.generateUidIdentifierBasedOnNode(arrayRef);
      this.arrays[arrayRef.name] = true;
      this.nodes.push(this.buildVariableDeclaration(arrayRef, toArray));
    }

    //

    for (var i = 0; i < pattern.elements.length; i++) {
      var elem = pattern.elements[i];

      // hole
      if (!elem) continue;

      var elemRef;

      if (t.isRestElement(elem)) {
        elemRef = this.toArray(arrayRef);

        if (i > 0) {
          elemRef = t.callExpression(t.memberExpression(elemRef, t.identifier("slice")), [t.literal(i)]);
        }

        // set the element to the rest element argument since we've dealt with it
        // being a rest already
        elem = elem.argument;
      } else {
        elemRef = t.memberExpression(arrayRef, t.literal(i), true);
      }

      this.push(elem, elemRef);
    }
  };

  DestructuringTransformer.prototype.init = function init(pattern, ref) {
    // trying to destructure a value that we can't evaluate more than once so we
    // need to save it to a variable

    var shouldMemoise = true;
    if (!t.isArrayExpression(ref) && !t.isMemberExpression(ref)) {
      var memo = this.scope.maybeGenerateMemoised(ref, true);
      if (memo) {
        this.nodes.push(this.buildVariableDeclaration(memo, ref));
        ref = memo;
      }
    }

    //

    this.push(pattern, ref);

    return this.nodes;
  };

  return DestructuringTransformer;
})();
},{"../../../messages":47,"../../../types":169}],96:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.ForOfStatement = ForOfStatement;
exports._ForOfStatementArray = _ForOfStatementArray;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _messages = require("../../../messages");

var messages = _interopRequireWildcard(_messages);

var _util = require("../../../util");

var util = _interopRequireWildcard(_util);

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

function ForOfStatement(node, parent, scope, file) {
  if (this.get("right").isArrayExpression()) {
    return _ForOfStatementArray.call(this, node, scope, file);
  }

  var callback = spec;
  if (file.isLoose("es6.forOf")) callback = loose;

  var build = callback(node, parent, scope, file);
  var declar = build.declar;
  var loop = build.loop;
  var block = loop.body;

  // ensure that it's a block so we can take all its statements
  t.ensureBlock(node);

  // add the value declaration to the new loop body
  if (declar) {
    block.body.push(declar);
  }

  // push the rest of the original loop body onto our new body
  block.body = block.body.concat(node.body.body);

  t.inherits(loop, node);
  t.inherits(loop.body, node.body);

  if (build.replaceParent) {
    this.parentPath.replaceWithMultiple(build.node);
    this.remove();
  } else {
    return build.node;
  }
}

function _ForOfStatementArray(node, scope, file) {
  var nodes = [];
  var right = node.right;

  if (!t.isIdentifier(right) || !scope.hasBinding(right.name)) {
    var uid = scope.generateUidIdentifier("arr");
    nodes.push(t.variableDeclaration("var", [t.variableDeclarator(uid, right)]));
    right = uid;
  }

  var iterationKey = scope.generateUidIdentifier("i");

  var loop = util.template("for-of-array", {
    BODY: node.body,
    KEY: iterationKey,
    ARR: right
  });

  t.inherits(loop, node);
  t.ensureBlock(loop);

  var iterationValue = t.memberExpression(right, iterationKey, true);

  var left = node.left;
  if (t.isVariableDeclaration(left)) {
    left.declarations[0].init = iterationValue;
    loop.body.body.unshift(left);
  } else {
    loop.body.body.unshift(t.expressionStatement(t.assignmentExpression("=", left, iterationValue)));
  }

  nodes.push(loop);

  return nodes;
}

var loose = function loose(node, parent, scope, file) {
  var left = node.left;
  var declar, id;

  if (t.isIdentifier(left) || t.isPattern(left) || t.isMemberExpression(left)) {
    // for (i of test), for ({ i } of test)
    id = left;
  } else if (t.isVariableDeclaration(left)) {
    // for (var i of test)
    id = scope.generateUidIdentifier("ref");
    declar = t.variableDeclaration(left.kind, [t.variableDeclarator(left.declarations[0].id, id)]);
  } else {
    throw file.errorWithNode(left, messages.get("unknownForHead", left.type));
  }

  var iteratorKey = scope.generateUidIdentifier("iterator");
  var isArrayKey = scope.generateUidIdentifier("isArray");

  var loop = util.template("for-of-loose", {
    LOOP_OBJECT: iteratorKey,
    IS_ARRAY: isArrayKey,
    OBJECT: node.right,
    INDEX: scope.generateUidIdentifier("i"),
    ID: id
  });

  if (!declar) {
    // no declaration so we need to remove the variable declaration at the top of
    // the for-of-loose template
    loop.body.body.shift();
  }

  //

  return {
    declar: declar,
    node: loop,
    loop: loop
  };
};

var spec = function spec(node, parent, scope, file) {
  var left = node.left;
  var declar;

  var stepKey = scope.generateUidIdentifier("step");
  var stepValue = t.memberExpression(stepKey, t.identifier("value"));

  if (t.isIdentifier(left) || t.isPattern(left) || t.isMemberExpression(left)) {
    // for (i of test), for ({ i } of test)
    declar = t.expressionStatement(t.assignmentExpression("=", left, stepValue));
  } else if (t.isVariableDeclaration(left)) {
    // for (var i of test)
    declar = t.variableDeclaration(left.kind, [t.variableDeclarator(left.declarations[0].id, stepValue)]);
  } else {
    throw file.errorWithNode(left, messages.get("unknownForHead", left.type));
  }

  //

  var iteratorKey = scope.generateUidIdentifier("iterator");

  var template = util.template("for-of", {
    ITERATOR_HAD_ERROR_KEY: scope.generateUidIdentifier("didIteratorError"),
    ITERATOR_COMPLETION: scope.generateUidIdentifier("iteratorNormalCompletion"),
    ITERATOR_ERROR_KEY: scope.generateUidIdentifier("iteratorError"),
    ITERATOR_KEY: iteratorKey,
    STEP_KEY: stepKey,
    OBJECT: node.right,
    BODY: null
  });

  var isLabeledParent = t.isLabeledStatement(parent);

  var tryBody = template[3].block.body;
  var loop = tryBody[0];

  if (isLabeledParent) {
    tryBody[0] = t.labeledStatement(parent.label, loop);
  }

  //

  return {
    replaceParent: isLabeledParent,
    declar: declar,
    loop: loop,
    node: template
  };
};
},{"../../../messages":47,"../../../types":169,"../../../util":173}],97:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.ImportDeclaration = ImportDeclaration;
exports.ExportAllDeclaration = ExportAllDeclaration;
exports.ExportDefaultDeclaration = ExportDefaultDeclaration;
exports.ExportNamedDeclaration = ExportNamedDeclaration;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

function keepBlockHoist(node, nodes) {
  if (node._blockHoist) {
    for (var i = 0; i < nodes.length; i++) {
      nodes[i]._blockHoist = node._blockHoist;
    }
  }
}

var metadata = {
  group: "builtin-modules"
};

exports.metadata = metadata;

function ImportDeclaration(node, parent, scope, file) {
  // flow type
  if (node.isType) return;

  var nodes = [];

  if (node.specifiers.length) {
    for (var i = 0; i < node.specifiers.length; i++) {
      file.moduleFormatter.importSpecifier(node.specifiers[i], node, nodes, parent);
    }
  } else {
    file.moduleFormatter.importDeclaration(node, nodes, parent);
  }

  if (nodes.length === 1) {
    // inherit `_blockHoist` - this is for `_blockHoist` in File.prototype.addImport
    nodes[0]._blockHoist = node._blockHoist;
  }

  return nodes;
}

function ExportAllDeclaration(node, parent, scope, file) {
  var nodes = [];
  file.moduleFormatter.exportAllDeclaration(node, nodes, parent);
  keepBlockHoist(node, nodes);
  return nodes;
}

function ExportDefaultDeclaration(node, parent, scope, file) {
  var nodes = [];
  file.moduleFormatter.exportDeclaration(node, nodes, parent);
  keepBlockHoist(node, nodes);
  return nodes;
}

function ExportNamedDeclaration(node, parent, scope, file) {
  // flow type
  if (this.get("declaration").isTypeAlias()) return;

  var nodes = [];

  if (node.declaration) {
    // make sure variable exports have an initializer
    // this is done here to avoid duplicating it in the module formatters
    if (t.isVariableDeclaration(node.declaration)) {
      var declar = node.declaration.declarations[0];
      declar.init = declar.init || t.identifier("undefined");
    }

    file.moduleFormatter.exportDeclaration(node, nodes, parent);
  } else if (node.specifiers) {
    for (var i = 0; i < node.specifiers.length; i++) {
      file.moduleFormatter.exportSpecifier(node.specifiers[i], node, nodes, parent);
    }
  }

  keepBlockHoist(node, nodes);

  return nodes;
}
},{"../../../types":169}],98:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.ObjectExpression = ObjectExpression;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _helpersReplaceSupers = require("../../helpers/replace-supers");

var _helpersReplaceSupers2 = _interopRequireDefault(_helpersReplaceSupers);

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

function Property(path, node, scope, getObjectRef, file) {
  if (!node.method && node.kind === "init") return;
  if (!t.isFunction(node.value)) return;

  var replaceSupers = new _helpersReplaceSupers2["default"]({
    getObjectRef: getObjectRef,
    methodNode: node,
    methodPath: path,
    isStatic: true,
    scope: scope,
    file: file
  });

  replaceSupers.replace();
}

function ObjectExpression(node, parent, scope, file) {
  var objectRef;
  var getObjectRef = function getObjectRef() {
    return objectRef = objectRef || scope.generateUidIdentifier("obj");
  };

  var propPaths = this.get("properties");
  for (var i = 0; i < node.properties.length; i++) {
    Property(propPaths[i], node.properties[i], scope, getObjectRef, file);
  }

  if (objectRef) {
    scope.push({ id: objectRef });
    return t.assignmentExpression("=", objectRef, node);
  }
}
},{"../../../types":169,"../../helpers/replace-supers":69}],99:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.Func /*tion*/ = Func;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _helpersCallDelegate = require("../../helpers/call-delegate");

var _helpersCallDelegate2 = _interopRequireDefault(_helpersCallDelegate);

var _util = require("../../../util");

var util = _interopRequireWildcard(_util);

var _traversal = require("../../../traversal");

var _traversal2 = _interopRequireDefault(_traversal);

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

var hasDefaults = function hasDefaults(node) {
  for (var i = 0; i < node.params.length; i++) {
    if (!t.isIdentifier(node.params[i])) return true;
  }
  return false;
};

var iifeVisitor = {
  ReferencedIdentifier: function ReferencedIdentifier(node, parent, scope, state) {
    if (node.name !== "eval") {
      if (!state.scope.hasOwnBinding(node.name)) return;
      if (state.scope.bindingIdentifierEquals(node.name, node)) return;
    }

    state.iife = true;
    this.stop();
  }
};

function Func(node, parent, scope, file) {
  if (!hasDefaults(node)) return;

  t.ensureBlock(node);

  var body = [];

  var argsIdentifier = t.identifier("arguments");
  argsIdentifier._shadowedFunctionLiteral = true;

  var lastNonDefaultParam = 0;

  var state = { iife: false, scope: scope };

  var pushDefNode = function pushDefNode(left, right, i) {
    var defNode = util.template("default-parameter", {
      VARIABLE_NAME: left,
      DEFAULT_VALUE: right,
      ARGUMENT_KEY: t.literal(i),
      ARGUMENTS: argsIdentifier
    }, true);
    defNode._blockHoist = node.params.length - i;
    body.push(defNode);
  };

  var params = this.get("params");
  for (var i = 0; i < params.length; i++) {
    var param = params[i];

    if (!param.isAssignmentPattern()) {
      if (!param.isRestElement()) {
        lastNonDefaultParam = i + 1;
      }

      if (!param.isIdentifier()) {
        param.traverse(iifeVisitor, state);
      }

      if (file.transformers["es6.spec.blockScoping"].canTransform() && param.isIdentifier()) {
        pushDefNode(param.node, t.identifier("undefined"), i);
      }

      continue;
    }

    var left = param.get("left");
    var right = param.get("right");

    var placeholder = scope.generateUidIdentifier("x");
    placeholder._isDefaultPlaceholder = true;
    node.params[i] = placeholder;

    if (!state.iife) {
      if (right.isIdentifier() && scope.hasOwnBinding(right.node.name)) {
        state.iife = true;
      } else {
        right.traverse(iifeVisitor, state);
      }
    }

    pushDefNode(left.node, right.node, i);
  }

  // we need to cut off all trailing default parameters
  node.params = node.params.slice(0, lastNonDefaultParam);

  if (state.iife) {
    body.push((0, _helpersCallDelegate2["default"])(node, scope));
    node.body = t.blockStatement(body);
  } else {
    node.body.body = body.concat(node.body.body);
  }
}
},{"../../../traversal":157,"../../../types":169,"../../../util":173,"../../helpers/call-delegate":60}],100:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.Func /*tion*/ = Func;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _lodashLangIsNumber = require("lodash/lang/isNumber");

var _lodashLangIsNumber2 = _interopRequireDefault(_lodashLangIsNumber);

var _util = require("../../../util");

var util = _interopRequireWildcard(_util);

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

var memberExpressionOptimisationVisitor = {
  enter: function enter(node, parent, scope, state) {
    // check if this scope has a local binding that will shadow the rest parameter
    if (this.isScope() && !scope.bindingIdentifierEquals(state.name, state.outerBinding)) {
      return this.skip();
    }

    // skip over functions as whatever `arguments` we reference inside will refer
    // to the wrong function
    if (this.isFunctionDeclaration() || this.isFunctionExpression()) {
      state.noOptimise = true;
      this.traverse(memberExpressionOptimisationVisitor, state);
      state.noOptimise = false;
      return this.skip();
    }

    // is this a referenced identifier and is it referencing the rest parameter?
    if (!this.isReferencedIdentifier({ name: state.name })) return;

    if (!state.noOptimise && t.isMemberExpression(parent) && parent.computed) {
      // if we know that this member expression is referencing a number then we can safely
      // optimise it
      var prop = parent.property;
      if ((0, _lodashLangIsNumber2["default"])(prop.value) || t.isUnaryExpression(prop) || t.isBinaryExpression(prop)) {
        state.candidates.push(this);
        return;
      }
    }

    state.canOptimise = false;
    this.stop();
  }
};

function optimizeMemberExpression(parent, offset) {
  var newExpr;
  var prop = parent.property;

  if (t.isLiteral(prop)) {
    prop.value += offset;
    prop.raw = String(prop.value);
  } else {
    // // UnaryExpression, BinaryExpression
    newExpr = t.binaryExpression("+", prop, t.literal(offset));
    parent.property = newExpr;
  }
}

var hasRest = function hasRest(node) {
  return t.isRestElement(node.params[node.params.length - 1]);
};

function Func(node, parent, scope, file) {
  if (!hasRest(node)) return;

  var restParam = node.params.pop();
  var rest = restParam.argument;

  var argsId = t.identifier("arguments");

  // otherwise `arguments` will be remapped in arrow functions
  argsId._shadowedFunctionLiteral = true;

  // support patterns
  if (t.isPattern(rest)) {
    var pattern = rest;
    rest = scope.generateUidIdentifier("ref");

    var declar = t.variableDeclaration("let", pattern.elements.map(function (elem, index) {
      var accessExpr = t.memberExpression(rest, t.literal(index), true);
      return t.variableDeclarator(elem, accessExpr);
    }));
    node.body.body.unshift(declar);
  }

  // check if rest is used in member expressions and optimise for those cases

  var state = {
    outerBinding: scope.getBindingIdentifier(rest.name),
    canOptimise: true,
    candidates: [],
    method: node,
    name: rest.name
  };

  this.traverse(memberExpressionOptimisationVisitor, state);

  // we only have shorthands and there's no other references
  if (state.canOptimise && state.candidates.length) {
    for (var i = 0; i < state.candidates.length; i++) {
      var candidate = state.candidates[i];
      candidate.replaceWith(argsId);
      optimizeMemberExpression(candidate.parent, node.params.length);
    }
    return;
  }

  //

  var start = t.literal(node.params.length);
  var key = scope.generateUidIdentifier("key");
  var len = scope.generateUidIdentifier("len");

  var arrKey = key;
  var arrLen = len;
  if (node.params.length) {
    // this method has additional params, so we need to subtract
    // the index of the current argument position from the
    // position in the array that we want to populate
    arrKey = t.binaryExpression("-", key, start);

    // we need to work out the size of the array that we're
    // going to store all the rest parameters
    //
    // we need to add a check to avoid constructing the array
    // with <0 if there are less arguments than params as it'll
    // cause an error
    arrLen = t.conditionalExpression(t.binaryExpression(">", len, start), t.binaryExpression("-", len, start), t.literal(0));
  }

  var loop = util.template("rest", {
    ARRAY_TYPE: restParam.typeAnnotation,
    ARGUMENTS: argsId,
    ARRAY_KEY: arrKey,
    ARRAY_LEN: arrLen,
    START: start,
    ARRAY: rest,
    KEY: key,
    LEN: len
  });
  loop._blockHoist = node.params.length + 1;
  node.body.body.unshift(loop);
}
},{"../../../types":169,"../../../util":173,"lodash/lang/isNumber":410}],101:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

function loose(node, body, objId) {
  for (var i = 0; i < node.properties.length; i++) {
    var prop = node.properties[i];

    body.push(t.expressionStatement(t.assignmentExpression("=", t.memberExpression(objId, prop.key, prop.computed || t.isLiteral(prop.key)), prop.value)));
  }
}

function spec(node, body, objId, initProps, file) {
  var props = node.properties;

  // add all non-computed properties and `__proto__` properties to the initializer

  var broken = false;

  for (var i = 0; i < props.length; i++) {
    var prop = props[i];

    if (prop.computed) {
      broken = true;
    }

    if (prop.kind !== "init" || !broken || t.isLiteral(t.toComputedKey(prop, prop.key), { value: "__proto__" })) {
      initProps.push(prop);
      props[i] = null;
    }
  }

  // add a simple assignment for all Symbol member expressions due to symbol polyfill limitations
  // otherwise use Object.defineProperty

  for (var i = 0; i < props.length; i++) {
    var prop = props[i];
    if (!prop) continue;

    var key = prop.key;
    if (t.isIdentifier(key) && !prop.computed) {
      key = t.literal(key.name);
    }

    var bodyNode = t.callExpression(file.addHelper("define-property"), [objId, key, prop.value]);

    body.push(t.expressionStatement(bodyNode));
  }

  // only one node and it's a Object.defineProperty that returns the object

  if (body.length === 1) {
    var first = body[0].expression;

    if (t.isCallExpression(first)) {
      first.arguments[0] = t.objectExpression(initProps);
      return first;
    }
  }
}

var ObjectExpression = {
  exit: function exit(node, parent, scope, file) {
    var hasComputed = false;

    var _arr = node.properties;
    for (var _i = 0; _i < _arr.length; _i++) {
      var prop = _arr[_i];
      hasComputed = t.isProperty(prop, { computed: true, kind: "init" });
      if (hasComputed) break;
    }

    if (!hasComputed) return;

    var initProps = [];
    var objId = scope.generateUidIdentifierBasedOnNode(parent);

    //

    var body = [];

    //

    var callback = spec;
    if (file.isLoose("es6.properties.computed")) callback = loose;

    var result = callback(node, body, objId, initProps, file);
    if (result) return result;

    //

    body.unshift(t.variableDeclaration("var", [t.variableDeclarator(objId, t.objectExpression(initProps))]));

    body.push(t.expressionStatement(objId));

    return body;
  }
};
exports.ObjectExpression = ObjectExpression;
},{"../../../types":169}],102:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.Property = Property;

function Property(node) {
  if (node.method) {
    node.method = false;
  }

  if (node.shorthand) {
    node.shorthand = false;
  }
}
},{}],103:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.Literal = Literal;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _helpersRegex = require("../../helpers/regex");

var regex = _interopRequireWildcard(_helpersRegex);

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

function Literal(node) {
  if (!regex.is(node, "y")) return;
  return t.newExpression(t.identifier("RegExp"), [t.literal(node.regex.pattern), t.literal(node.regex.flags)]);
}
},{"../../../types":169,"../../helpers/regex":67}],104:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.Literal = Literal;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _regexpuRewritePattern = require("regexpu/rewrite-pattern");

var _regexpuRewritePattern2 = _interopRequireDefault(_regexpuRewritePattern);

var _helpersRegex = require("../../helpers/regex");

var regex = _interopRequireWildcard(_helpersRegex);

function Literal(node) {
  if (!regex.is(node, "u")) return;
  node.regex.pattern = (0, _regexpuRewritePattern2["default"])(node.regex.pattern, node.regex.flags);
  regex.pullFlag(node, "u");
}
},{"../../helpers/regex":67,"regexpu/rewrite-pattern":478}],105:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _traversal = require("../../../traversal");

var _traversal2 = _interopRequireDefault(_traversal);

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

var visitor = {
  ReferencedIdentifier: function ReferencedIdentifier(node, parent, scope, state) {
    if (t.isFor(parent) && parent.left === node) return;

    var declared = state.letRefs[node.name];
    if (!declared) return;

    // declared node is different in this scope
    if (scope.getBindingIdentifier(node.name) !== declared) return;

    var assert = t.callExpression(state.file.addHelper("temporal-assert-defined"), [node, t.literal(node.name), state.file.addHelper("temporal-undefined")]);

    this.skip();

    if (t.isAssignmentExpression(parent) || t.isUpdateExpression(parent)) {
      if (parent._ignoreBlockScopingTDZ) return;
      this.parentPath.replaceWith(t.sequenceExpression([assert, parent]));
    } else {
      return t.logicalExpression("&&", assert, node);
    }
  }
};

var metadata = {
  optional: true,
  group: "builtin-advanced"
};

exports.metadata = metadata;
var BlockStatement = {
  exit: function exit(node, parent, scope, file) {
    var letRefs = node._letReferences;
    if (!letRefs) return;

    this.traverse(visitor, {
      letRefs: letRefs,
      file: file
    });
  }
};

exports.BlockStatement = BlockStatement;
exports.Program = BlockStatement;
exports.Loop = BlockStatement;
},{"../../../traversal":157,"../../../types":169}],106:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.UnaryExpression = UnaryExpression;
exports.BinaryExpression = BinaryExpression;
exports.VariableDeclaration = VariableDeclaration;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

var metadata = {
  optional: true
};

exports.metadata = metadata;

function UnaryExpression(node, parent, scope, file) {
  if (node._ignoreSpecSymbols) return;

  if (node.operator === "typeof") {
    var call = t.callExpression(file.addHelper("typeof"), [node.argument]);
    if (this.get("argument").isIdentifier()) {
      var undefLiteral = t.literal("undefined");
      var unary = t.unaryExpression("typeof", node.argument);
      unary._ignoreSpecSymbols = true;
      return t.conditionalExpression(t.binaryExpression("===", unary, undefLiteral), undefLiteral, call);
    } else {
      return call;
    }
  }
}

function BinaryExpression(node, parent, scope, file) {
  if (node.operator === "instanceof") {
    return t.callExpression(file.addHelper("instanceof"), [node.left, node.right]);
  }
}

function VariableDeclaration(node) {
  if (node._generated) this.skip();
}

exports.FunctionDeclaration = VariableDeclaration;
},{"../../../types":169}],107:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.TemplateLiteral = TemplateLiteral;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

var metadata = {
  optional: true
};

exports.metadata = metadata;

function TemplateLiteral(node, parent, scope, file) {
  if (t.isTaggedTemplateExpression(parent)) return;

  for (var i = 0; i < node.expressions.length; i++) {
    node.expressions[i] = t.callExpression(t.identifier("String"), [node.expressions[i]]);
  }
}
},{"../../../types":169}],108:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.ArrayExpression = ArrayExpression;
exports.CallExpression = CallExpression;
exports.NewExpression = NewExpression;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _lodashCollectionIncludes = require("lodash/collection/includes");

var _lodashCollectionIncludes2 = _interopRequireDefault(_lodashCollectionIncludes);

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

function getSpreadLiteral(spread, scope) {
  if (scope.file.isLoose("es6.spread")) {
    return spread.argument;
  } else {
    return scope.toArray(spread.argument, true);
  }
}

function hasSpread(nodes) {
  for (var i = 0; i < nodes.length; i++) {
    if (t.isSpreadElement(nodes[i])) {
      return true;
    }
  }
  return false;
}

function build(props, scope) {
  var nodes = [];

  var _props = [];

  var push = function push() {
    if (!_props.length) return;
    nodes.push(t.arrayExpression(_props));
    _props = [];
  };

  for (var i = 0; i < props.length; i++) {
    var prop = props[i];
    if (t.isSpreadElement(prop)) {
      push();
      nodes.push(getSpreadLiteral(prop, scope));
    } else {
      _props.push(prop);
    }
  }

  push();

  return nodes;
}

function ArrayExpression(node, parent, scope) {
  var elements = node.elements;
  if (!hasSpread(elements)) return;

  var nodes = build(elements, scope);
  var first = nodes.shift();

  if (!t.isArrayExpression(first)) {
    nodes.unshift(first);
    first = t.arrayExpression([]);
  }

  return t.callExpression(t.memberExpression(first, t.identifier("concat")), nodes);
}

function CallExpression(node, parent, scope) {
  var args = node.arguments;
  if (!hasSpread(args)) return;

  var contextLiteral = t.identifier("undefined");

  node.arguments = [];

  var nodes;
  if (args.length === 1 && args[0].argument.name === "arguments") {
    nodes = [args[0].argument];
  } else {
    nodes = build(args, scope);
  }

  var first = nodes.shift();
  if (nodes.length) {
    node.arguments.push(t.callExpression(t.memberExpression(first, t.identifier("concat")), nodes));
  } else {
    node.arguments.push(first);
  }

  var callee = node.callee;

  if (this.get("callee").isMemberExpression()) {
    var temp = scope.maybeGenerateMemoised(callee.object);
    if (temp) {
      callee.object = t.assignmentExpression("=", temp, callee.object);
      contextLiteral = temp;
    } else {
      contextLiteral = callee.object;
    }
    t.appendToMemberExpression(callee, t.identifier("apply"));
  } else {
    node.callee = t.memberExpression(node.callee, t.identifier("apply"));
  }

  node.arguments.unshift(contextLiteral);
}

function NewExpression(node, parent, scope, file) {
  var args = node.arguments;
  if (!hasSpread(args)) return;

  var nodes = build(args, scope);

  var context = t.arrayExpression([t.literal(null)]);

  args = t.callExpression(t.memberExpression(context, t.identifier("concat")), nodes);

  return t.newExpression(t.callExpression(t.memberExpression(file.addHelper("bind"), t.identifier("apply")), [node.callee, args]), []);
}
},{"../../../types":169,"lodash/collection/includes":332}],109:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.Func /*tion*/ = Func;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var _lodashCollectionReduceRight = require("lodash/collection/reduceRight");

var _lodashCollectionReduceRight2 = _interopRequireDefault(_lodashCollectionReduceRight);

var _messages = require("../../../messages");

var messages = _interopRequireWildcard(_messages);

var _lodashArrayFlatten = require("lodash/array/flatten");

var _lodashArrayFlatten2 = _interopRequireDefault(_lodashArrayFlatten);

var _traversal = require("../../../traversal");

var _traversal2 = _interopRequireDefault(_traversal);

var _util = require("../../../util");

var util = _interopRequireWildcard(_util);

var _lodashCollectionMap = require("lodash/collection/map");

var _lodashCollectionMap2 = _interopRequireDefault(_lodashCollectionMap);

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

var metadata = {
  group: "builtin-trailing"
};

exports.metadata = metadata;

function Func(node, parent, scope, file) {
  if (node.generator || node.async) return;
  var tailCall = new TailCallTransformer(this, scope, file);
  tailCall.run();
}

function returnBlock(expr) {
  return t.blockStatement([t.returnStatement(expr)]);
}

var visitor = {
  enter: function enter(node, parent, scope, state) {
    if (t.isTryStatement(parent)) {
      if (node === parent.block) {
        this.skip();
      } else if (parent.finalizer && node !== parent.finalizer) {
        this.skip();
      }
    }
  },

  ReturnStatement: function ReturnStatement(node, parent, scope, state) {
    return state.subTransform(node.argument);
  },

  Function: function Function(node, parent, scope, state) {
    this.skip();
  },

  VariableDeclaration: function VariableDeclaration(node, parent, scope, state) {
    state.vars.push(node);
  },

  ThisExpression: function ThisExpression(node, parent, scope, state) {
    state.needsThis = true;
    state.thisPaths.push(this);
  },

  ReferencedIdentifier: function ReferencedIdentifier(node, parent, scope, state) {
    if (node.name === "arguments") {
      state.needsArguments = true;
      state.argumentsPaths.push(this);
    }
  }
};

var TailCallTransformer = (function () {
  function TailCallTransformer(path, scope, file) {
    _classCallCheck(this, TailCallTransformer);

    this.hasTailRecursion = false;

    this.needsArguments = false;
    this.argumentsPaths = [];
    this.setsArguments = false;

    this.needsThis = false;
    this.thisPaths = [];

    this.ownerId = path.node.id;
    this.vars = [];

    this.scope = scope;
    this.path = path;
    this.file = file;
    this.node = path.node;
  }

  TailCallTransformer.prototype.getArgumentsId = function getArgumentsId() {
    return this.argumentsId = this.argumentsId || this.scope.generateUidIdentifier("arguments");
  };

  TailCallTransformer.prototype.getThisId = function getThisId() {
    return this.thisId = this.thisId || this.scope.generateUidIdentifier("this");
  };

  TailCallTransformer.prototype.getLeftId = function getLeftId() {
    return this.leftId = this.leftId || this.scope.generateUidIdentifier("left");
  };

  TailCallTransformer.prototype.getFunctionId = function getFunctionId() {
    return this.functionId = this.functionId || this.scope.generateUidIdentifier("function");
  };

  TailCallTransformer.prototype.getAgainId = function getAgainId() {
    return this.againId = this.againId || this.scope.generateUidIdentifier("again");
  };

  TailCallTransformer.prototype.getParams = function getParams() {
    var params = this.params;

    if (!params) {
      params = this.node.params;
      this.paramDecls = [];

      for (var i = 0; i < params.length; i++) {
        var param = params[i];
        if (!param._isDefaultPlaceholder) {
          this.paramDecls.push(t.variableDeclarator(param, params[i] = this.scope.generateUidIdentifier("x")));
        }
      }
    }

    return this.params = params;
  };

  TailCallTransformer.prototype.hasDeopt = function hasDeopt() {
    // check if the ownerId has been reassigned, if it has then it's not safe to
    // perform optimisations
    var ownerIdInfo = this.scope.getBinding(this.ownerId.name);
    return ownerIdInfo && !ownerIdInfo.constant;
  };

  TailCallTransformer.prototype.run = function run() {
    var scope = this.scope;
    var node = this.node;

    // only tail recursion can be optimized as for now, so we can skip anonymous
    // functions entirely
    var ownerId = this.ownerId;
    if (!ownerId) return;

    // traverse the function and look for tail recursion
    this.path.traverse(visitor, this);

    // has no tail call recursion
    if (!this.hasTailRecursion) return;

    // the function binding isn't constant so we can't be sure that it's the same function :(
    if (this.hasDeopt()) {
      this.file.log.deopt(node, messages.get("tailCallReassignmentDeopt"));
      return;
    }

    //

    var body = t.ensureBlock(node).body;

    for (var i = 0; i < body.length; i++) {
      var bodyNode = body[i];
      if (!t.isFunctionDeclaration(bodyNode)) continue;

      bodyNode = body[i] = t.variableDeclaration("var", [t.variableDeclarator(bodyNode.id, t.toExpression(bodyNode))]);
      bodyNode._blockHoist = 2;
    }

    if (this.vars.length > 0) {
      var declarations = (0, _lodashArrayFlatten2["default"])((0, _lodashCollectionMap2["default"])(this.vars, function (decl) {
        return decl.declarations;
      }));

      var assignment = (0, _lodashCollectionReduceRight2["default"])(declarations, function (expr, decl) {
        return t.assignmentExpression("=", decl.id, expr);
      }, t.identifier("undefined"));

      var statement = t.expressionStatement(assignment);
      statement._blockHoist = Infinity;
      body.unshift(statement);
    }

    var paramDecls = this.paramDecls;
    if (paramDecls.length > 0) {
      var paramDecl = t.variableDeclaration("var", paramDecls);
      paramDecl._blockHoist = Infinity;
      body.unshift(paramDecl);
    }

    body.unshift(t.expressionStatement(t.assignmentExpression("=", this.getAgainId(), t.literal(false))));

    node.body = util.template("tail-call-body", {
      FUNCTION_ID: this.getFunctionId(),
      AGAIN_ID: this.getAgainId(),
      BLOCK: node.body
    });

    var topVars = [];

    if (this.needsThis) {
      var _arr = this.thisPaths;

      for (var _i = 0; _i < _arr.length; _i++) {
        var path = _arr[_i];
        path.replaceWith(this.getThisId());
      }

      topVars.push(t.variableDeclarator(this.getThisId(), t.thisExpression()));
    }

    if (this.needsArguments || this.setsArguments) {
      var _arr2 = this.argumentsPaths;

      for (var _i2 = 0; _i2 < _arr2.length; _i2++) {
        var path = _arr2[_i2];
        path.replaceWith(this.argumentsId);
      }

      var decl = t.variableDeclarator(this.argumentsId);
      if (this.argumentsId) {
        decl.init = t.identifier("arguments");
      }
      topVars.push(decl);
    }

    var leftId = this.leftId;
    if (leftId) {
      topVars.push(t.variableDeclarator(leftId));
    }

    if (topVars.length > 0) {
      node.body.body.unshift(t.variableDeclaration("var", topVars));
    }
  };

  TailCallTransformer.prototype.subTransform = function subTransform(node) {
    if (!node) return;

    var handler = this["subTransform" + node.type];
    if (handler) return handler.call(this, node);
  };

  TailCallTransformer.prototype.subTransformConditionalExpression = function subTransformConditionalExpression(node) {
    var callConsequent = this.subTransform(node.consequent);
    var callAlternate = this.subTransform(node.alternate);
    if (!callConsequent && !callAlternate) {
      return;
    }

    // if ternary operator had tail recursion in value, convert to optimized if-statement
    node.type = "IfStatement";
    node.consequent = callConsequent ? t.toBlock(callConsequent) : returnBlock(node.consequent);

    if (callAlternate) {
      node.alternate = t.isIfStatement(callAlternate) ? callAlternate : t.toBlock(callAlternate);
    } else {
      node.alternate = returnBlock(node.alternate);
    }

    return [node];
  };

  TailCallTransformer.prototype.subTransformLogicalExpression = function subTransformLogicalExpression(node) {
    // only call in right-value of can be optimized
    var callRight = this.subTransform(node.right);
    if (!callRight) return;

    // cache left value as it might have side-effects
    var leftId = this.getLeftId();
    var testExpr = t.assignmentExpression("=", leftId, node.left);

    if (node.operator === "&&") {
      testExpr = t.unaryExpression("!", testExpr);
    }

    return [t.ifStatement(testExpr, returnBlock(leftId))].concat(callRight);
  };

  TailCallTransformer.prototype.subTransformSequenceExpression = function subTransformSequenceExpression(node) {
    var seq = node.expressions;

    // only last element can be optimized
    var lastCall = this.subTransform(seq[seq.length - 1]);
    if (!lastCall) {
      return;
    }

    // remove converted expression from sequence
    // and convert to regular expression if needed
    if (--seq.length === 1) {
      node = seq[0];
    }

    return [t.expressionStatement(node)].concat(lastCall);
  };

  TailCallTransformer.prototype.subTransformCallExpression = function subTransformCallExpression(node) {
    var callee = node.callee,
        thisBinding,
        args;

    if (t.isMemberExpression(callee, { computed: false }) && t.isIdentifier(callee.property)) {
      switch (callee.property.name) {
        case "call":
          args = t.arrayExpression(node.arguments.slice(1));
          break;

        case "apply":
          args = node.arguments[1] || t.identifier("undefined");
          break;

        default:
          return;
      }

      thisBinding = node.arguments[0];
      callee = callee.object;
    }

    // only tail recursion can be optimized as for now
    if (!t.isIdentifier(callee) || !this.scope.bindingIdentifierEquals(callee.name, this.ownerId)) {
      return;
    }

    this.hasTailRecursion = true;

    if (this.hasDeopt()) return;

    var body = [];

    if (this.needsThis && !t.isThisExpression(thisBinding)) {
      body.push(t.expressionStatement(t.assignmentExpression("=", this.getThisId(), thisBinding || t.identifier("undefined"))));
    }

    if (!args) {
      args = t.arrayExpression(node.arguments);
    }

    var argumentsId = this.getArgumentsId();
    var params = this.getParams();

    if (this.needsArguments) {
      body.push(t.expressionStatement(t.assignmentExpression("=", argumentsId, args)));
    }

    if (t.isArrayExpression(args)) {
      var elems = args.elements;
      for (var i = 0; i < elems.length && i < params.length; i++) {
        var param = params[i];
        var elem = elems[i] || (elems[i] = t.identifier("undefined"));
        if (!param._isDefaultPlaceholder) {
          elems[i] = t.assignmentExpression("=", param, elem);
        }
      }

      if (!this.needsArguments) {
        var _arr3 = elems;

        for (var _i3 = 0; _i3 < _arr3.length; _i3++) {
          var elem = _arr3[_i3];
          body.push(t.expressionStatement(elem));
        }
      }
    } else {
      this.setsArguments = true;
      for (var i = 0; i < params.length; i++) {
        var param = params[i];
        if (!param._isDefaultPlaceholder) {
          body.push(t.expressionStatement(t.assignmentExpression("=", param, t.memberExpression(argumentsId, t.literal(i), true))));
        }
      }
    }

    body.push(t.expressionStatement(t.assignmentExpression("=", this.getAgainId(), t.literal(true))));

    body.push(t.continueStatement(this.getFunctionId()));

    return body;
  };

  return TailCallTransformer;
})();
},{"../../../messages":47,"../../../traversal":157,"../../../types":169,"../../../util":173,"lodash/array/flatten":325,"lodash/collection/map":333,"lodash/collection/reduceRight":334}],110:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.TaggedTemplateExpression = TaggedTemplateExpression;
exports.TemplateLiteral = TemplateLiteral;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

var buildBinaryExpression = function buildBinaryExpression(left, right) {
  return t.binaryExpression("+", left, right);
};

function TaggedTemplateExpression(node, parent, scope, file) {
  var quasi = node.quasi;
  var args = [];

  var strings = [];
  var raw = [];

  for (var i = 0; i < quasi.quasis.length; i++) {
    var elem = quasi.quasis[i];
    strings.push(t.literal(elem.value.cooked));
    raw.push(t.literal(elem.value.raw));
  }

  strings = t.arrayExpression(strings);
  raw = t.arrayExpression(raw);

  var templateName = "tagged-template-literal";
  if (file.isLoose("es6.templateLiterals")) templateName += "-loose";
  args.push(t.callExpression(file.addHelper(templateName), [strings, raw]));

  args = args.concat(quasi.expressions);

  return t.callExpression(node.tag, args);
}

function TemplateLiteral(node, parent, scope, file) {
  var nodes = [];
  var i;

  for (i = 0; i < node.quasis.length; i++) {
    var elem = node.quasis[i];

    nodes.push(t.literal(elem.value.cooked));

    var expr = node.expressions.shift();
    if (expr) nodes.push(expr);
  }

  if (nodes.length > 1) {
    // remove redundant '' at the end of the expression
    var last = nodes[nodes.length - 1];
    if (t.isLiteral(last, { value: "" })) nodes.pop();

    var root = buildBinaryExpression(nodes.shift(), nodes.shift());

    for (i = 0; i < nodes.length; i++) {
      root = buildBinaryExpression(root, nodes[i]);
    }

    return root;
  } else {
    return nodes[0];
  }
}
},{"../../../types":169}],111:[function(require,module,exports){
"use strict";

exports.__esModule = true;
var metadata = {
  stage: 1
};
exports.metadata = metadata;
},{}],112:[function(require,module,exports){
"use strict";

exports.__esModule = true;
var metadata = {
  stage: 0,
  dependencies: ["es6.classes"]
};
exports.metadata = metadata;
},{}],113:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.ComprehensionExpression = ComprehensionExpression;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _helpersBuildComprehension = require("../../helpers/build-comprehension");

var _helpersBuildComprehension2 = _interopRequireDefault(_helpersBuildComprehension);

var _traversal = require("../../../traversal");

var _traversal2 = _interopRequireDefault(_traversal);

var _util = require("../../../util");

var util = _interopRequireWildcard(_util);

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

var metadata = {
  stage: 0
};

exports.metadata = metadata;

function ComprehensionExpression(node, parent, scope, file) {
  var callback = array;
  if (node.generator) callback = generator;
  return callback(node, parent, scope, file);
}

function generator(node) {
  var body = [];
  var container = t.functionExpression(null, [], t.blockStatement(body), true);
  container.shadow = true;

  body.push((0, _helpersBuildComprehension2["default"])(node, function () {
    return t.expressionStatement(t.yieldExpression(node.body));
  }));

  return t.callExpression(container, []);
}

function array(node, parent, scope, file) {
  var uid = scope.generateUidIdentifierBasedOnNode(parent);

  var container = util.template("array-comprehension-container", {
    KEY: uid
  });
  container.callee.shadow = true;

  var block = container.callee.body;
  var body = block.body;

  if (_traversal2["default"].hasType(node, scope, "YieldExpression", t.FUNCTION_TYPES)) {
    container.callee.generator = true;
    container = t.yieldExpression(container, true);
  }

  var returnStatement = body.pop();

  body.push((0, _helpersBuildComprehension2["default"])(node, function () {
    return util.template("array-push", {
      STATEMENT: node.body,
      KEY: uid
    }, true);
  }));
  body.push(returnStatement);

  return container;
}
},{"../../../traversal":157,"../../../types":169,"../../../util":173,"../../helpers/build-comprehension":58}],114:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.ObjectExpression = ObjectExpression;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _helpersMemoiseDecorators = require("../../helpers/memoise-decorators");

var _helpersMemoiseDecorators2 = _interopRequireDefault(_helpersMemoiseDecorators);

var _helpersDefineMap = require("../../helpers/define-map");

var defineMap = _interopRequireWildcard(_helpersDefineMap);

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

var metadata = {
  dependencies: ["es6.classes"],
  optional: true,
  stage: 1
};

exports.metadata = metadata;

function ObjectExpression(node, parent, scope, file) {
  var hasDecorators = false;
  for (var i = 0; i < node.properties.length; i++) {
    var prop = node.properties[i];
    if (prop.decorators) {
      hasDecorators = true;
      break;
    }
  }
  if (!hasDecorators) return;

  var mutatorMap = {};

  for (var i = 0; i < node.properties.length; i++) {
    var prop = node.properties[i];
    if (prop.decorators) (0, _helpersMemoiseDecorators2["default"])(prop.decorators, scope);

    if (prop.kind === "init") {
      prop.kind = "";
      prop.value = t.functionExpression(null, [], t.blockStatement([t.returnStatement(prop.value)]));
    }

    defineMap.push(mutatorMap, prop, "initializer", file);
  }

  var obj = defineMap.toClassObject(mutatorMap);
  obj = defineMap.toComputedObjectFromClass(obj);
  return t.callExpression(file.addHelper("create-decorated-object"), [obj]);
}
},{"../../../types":169,"../../helpers/define-map":61,"../../helpers/memoise-decorators":64}],115:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.DoExpression = DoExpression;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

var metadata = {
  optional: true,
  stage: 0
};

exports.metadata = metadata;

function DoExpression(node) {
  var body = node.body.body;
  if (body.length) {
    return body;
  } else {
    return t.identifier("undefined");
  }
}
},{"../../../types":169}],116:[function(require,module,exports){
// https://github.com/rwaldron/exponentiation-operator

"use strict";

exports.__esModule = true;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _helpersBuildBinaryAssignmentOperatorTransformer = require("../../helpers/build-binary-assignment-operator-transformer");

var _helpersBuildBinaryAssignmentOperatorTransformer2 = _interopRequireDefault(_helpersBuildBinaryAssignmentOperatorTransformer);

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

var metadata = {
  stage: 2
};

exports.metadata = metadata;
var MATH_POW = t.memberExpression(t.identifier("Math"), t.identifier("pow"));

var _build = (0, _helpersBuildBinaryAssignmentOperatorTransformer2["default"])({
  operator: "**",

  build: function build(left, right) {
    return t.callExpression(MATH_POW, [left, right]);
  }
});

var ExpressionStatement = _build.ExpressionStatement;
var AssignmentExpression = _build.AssignmentExpression;
var BinaryExpression = _build.BinaryExpression;
exports.ExpressionStatement = ExpressionStatement;
exports.AssignmentExpression = AssignmentExpression;
exports.BinaryExpression = BinaryExpression;
},{"../../../types":169,"../../helpers/build-binary-assignment-operator-transformer":57}],117:[function(require,module,exports){
// https://github.com/leebyron/ecmascript-more-export-from

"use strict";

exports.__esModule = true;
exports.ExportNamedDeclaration = ExportNamedDeclaration;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

var metadata = {
  stage: 1
};

exports.metadata = metadata;
function build(node, nodes, scope) {
  var first = node.specifiers[0];
  if (!t.isExportNamespaceSpecifier(first) && !t.isExportDefaultSpecifier(first)) return;

  var specifier = node.specifiers.shift();
  var uid = scope.generateUidIdentifier(specifier.exported.name);

  var newSpecifier;
  if (t.isExportNamespaceSpecifier(specifier)) {
    newSpecifier = t.importNamespaceSpecifier(uid);
  } else {
    newSpecifier = t.importDefaultSpecifier(uid);
  }

  nodes.push(t.importDeclaration([newSpecifier], node.source));
  nodes.push(t.exportNamedDeclaration(null, [t.exportSpecifier(uid, specifier.exported)]));

  build(node, nodes, scope);
}

function ExportNamedDeclaration(node, parent, scope) {
  var nodes = [];
  build(node, nodes, scope);
  if (!nodes.length) return;

  if (node.specifiers.length >= 1) {
    nodes.push(node);
  }

  return nodes;
}
},{"../../../types":169}],118:[function(require,module,exports){
// https://github.com/zenparsing/es-function-bind

"use strict";

exports.__esModule = true;
exports.CallExpression = CallExpression;
exports.BindExpression = BindExpression;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

var metadata = {
  optional: true,
  stage: 0
};

exports.metadata = metadata;
function getTempId(scope) {
  var id = scope.path.getData("functionBind");
  if (id) return id;

  id = scope.generateDeclaredUidIdentifier("context");
  return scope.path.setData("functionBind", id);
}

function getStaticContext(bind, scope) {
  var object = bind.object || bind.callee.object;
  return scope.isStatic(object) && object;
}

function inferBindContext(bind, scope) {
  var staticContext = getStaticContext(bind, scope);
  if (staticContext) return staticContext;

  var tempId = getTempId(scope);
  if (bind.object) {
    bind.callee = t.sequenceExpression([t.assignmentExpression("=", tempId, bind.object), bind.callee]);
  } else {
    bind.callee.object = t.assignmentExpression("=", tempId, bind.callee.object);
  }
  return tempId;
}

function CallExpression(node, parent, scope, file) {
  var bind = node.callee;
  if (!t.isBindExpression(bind)) return;

  var context = inferBindContext(bind, scope);
  node.callee = t.memberExpression(bind.callee, t.identifier("call"));
  node.arguments.unshift(context);
}

function BindExpression(node, parent, scope, file) {
  var context = inferBindContext(node, scope);
  return t.callExpression(t.memberExpression(node.callee, t.identifier("bind")), [context]);
}
},{"../../../types":169}],119:[function(require,module,exports){
// https://github.com/sebmarkbage/ecmascript-rest-spread

"use strict";

exports.__esModule = true;
exports.ObjectExpression = ObjectExpression;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

var metadata = {
  stage: 1,
  dependencies: ["es6.destructuring"]
};

exports.metadata = metadata;
var hasSpread = function hasSpread(node) {
  for (var i = 0; i < node.properties.length; i++) {
    if (t.isSpreadProperty(node.properties[i])) {
      return true;
    }
  }
  return false;
};

function ObjectExpression(node, parent, scope, file) {
  if (!hasSpread(node)) return;

  var args = [];
  var props = [];

  var push = function push() {
    if (!props.length) return;
    args.push(t.objectExpression(props));
    props = [];
  };

  for (var i = 0; i < node.properties.length; i++) {
    var prop = node.properties[i];
    if (t.isSpreadProperty(prop)) {
      push();
      args.push(prop.argument);
    } else {
      props.push(prop);
    }
  }

  push();

  if (!t.isObjectExpression(args[0])) {
    args.unshift(t.objectExpression([]));
  }

  return t.callExpression(file.addHelper("extends"), args);
}
},{"../../../types":169}],120:[function(require,module,exports){
arguments[4][111][0].apply(exports,arguments)
},{"dup":111}],121:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.internal = internal;
exports.blacklist = blacklist;
exports.whitelist = whitelist;
exports.stage = stage;
exports.optional = optional;

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _lodashCollectionIncludes = require("lodash/collection/includes");

var _lodashCollectionIncludes2 = _interopRequireDefault(_lodashCollectionIncludes);

function internal(transformer, opts) {
  if (transformer.key[0] === "_") return true;
}

function blacklist(transformer, opts) {
  var blacklist = opts.blacklist;
  if (blacklist.length && (0, _lodashCollectionIncludes2["default"])(blacklist, transformer.key)) return false;
}

function whitelist(transformer, opts) {
  var whitelist = opts.whitelist;
  if (whitelist) return (0, _lodashCollectionIncludes2["default"])(whitelist, transformer.key);
}

function stage(transformer, opts) {
  var stage = transformer.metadata.stage;
  if (stage != null && stage >= opts.stage) return true;
}

function optional(transformer, opts) {
  if (transformer.metadata.optional && !(0, _lodashCollectionIncludes2["default"])(opts.optional, transformer.key)) return false;
}
},{"lodash/collection/includes":332}],122:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports["default"] = {
  //- builtin-setup
  strict: require("./other/strict"),
  _explode: require("./internal/explode"),
  _validation: require("./internal/validation"),
  _hoistDirectives: require("./internal/hoist-directives"),
  "minification.removeDebugger": require("./minification/remove-debugger"),
  "minification.removeConsole": require("./minification/remove-console"),
  "utility.inlineEnvironmentVariables": require("./utility/inline-environment-variables"),
  "minification.inlineExpressions": require("./minification/inline-expressions"),
  "minification.deadCodeElimination": require("./minification/dead-code-elimination"),
  _modules: require("./internal/modules"),
  "spec.functionName": require("./spec/function-name"),

  //- builtin-basic
  // this is where the bulk of the ES6 transformations take place, none of them require traversal state
  // so they can all be concatenated together for performance
  "es7.classProperties": require("./es7/class-properties"),
  "es7.trailingFunctionCommas": require("./es7/trailing-function-commas"),
  "es7.asyncFunctions": require("./es7/async-functions"),
  "es7.decorators": require("./es7/decorators"),
  "validation.undeclaredVariableCheck": require("./validation/undeclared-variable-check"),
  "validation.react": require("./validation/react"),
  "es6.arrowFunctions": require("./es6/arrow-functions"),
  "spec.blockScopedFunctions": require("./spec/block-scoped-functions"),
  "optimisation.react.constantElements": require("./optimisation/react.constant-elements"),
  "optimisation.react.inlineElements": require("./optimisation/react.inline-elements"),
  "es7.comprehensions": require("./es7/comprehensions"),
  "es6.classes": require("./es6/classes"),
  asyncToGenerator: require("./other/async-to-generator"),
  bluebirdCoroutines: require("./other/bluebird-coroutines"),
  "es6.objectSuper": require("./es6/object-super"),
  "es7.objectRestSpread": require("./es7/object-rest-spread"),
  "es7.exponentiationOperator": require("./es7/exponentiation-operator"),
  "es6.spec.templateLiterals": require("./es6/spec.template-literals"),
  "es6.templateLiterals": require("./es6/template-literals"),
  "es5.properties.mutators": require("./es5/properties.mutators"),
  "es6.properties.shorthand": require("./es6/properties.shorthand"),
  "es6.properties.computed": require("./es6/properties.computed"),
  "optimisation.flow.forOf": require("./optimisation/flow.for-of"),
  "es6.forOf": require("./es6/for-of"),
  "es6.regex.sticky": require("./es6/regex.sticky"),
  "es6.regex.unicode": require("./es6/regex.unicode"),
  "es6.constants": require("./es6/constants"),
  "es6.parameters.rest": require("./es6/parameters.rest"),
  "es6.spread": require("./es6/spread"),
  "es6.parameters.default": require("./es6/parameters.default"),
  "es7.exportExtensions": require("./es7/export-extensions"),
  "spec.protoToAssign": require("./spec/proto-to-assign"),
  "es7.doExpressions": require("./es7/do-expressions"),
  "es6.spec.symbols": require("./es6/spec.symbols"),
  "es7.functionBind": require("./es7/function-bind"),
  "spec.undefinedToVoid": require("./spec/undefined-to-void"),
  jscript: require("./other/jscript"),
  flow: require("./other/flow"),

  //- builtin-advanced
  "es6.destructuring": require("./es6/destructuring"),
  "es6.blockScoping": require("./es6/block-scoping"),
  "es6.spec.blockScoping": require("./es6/spec.block-scoping"),
  reactCompat: require("./other/react-compat"),
  react: require("./other/react"),

  // es6 syntax transformation is **forbidden** past this point since regenerator will chuck a massive
  // hissy fit

  //- regenerator
  regenerator: require("./other/regenerator"),

  //- builtin-modules
  runtime: require("./other/runtime"),
  "es6.modules": require("./es6/modules"),
  _moduleFormatter: require("./internal/module-formatter"),

  //- builtin-trailing
  // these clean up the output and do finishing up transformations, it's important to note that by this
  // stage you can't import any new modules or insert new ES6 as all those transformers have already
  // been ran
  "es6.tailCall": require("./es6/tail-call"),
  _shadowFunctions: require("./internal/shadow-functions"),
  "es3.propertyLiterals": require("./es3/property-literals"),
  "es3.memberExpressionLiterals": require("./es3/member-expression-literals"),
  "minification.memberExpressionLiterals": require("./minification/member-expression-literals"),
  "minification.propertyLiterals": require("./minification/property-literals"),
  _blockHoist: require("./internal/block-hoist") };
module.exports = exports["default"];
},{"./es3/member-expression-literals":88,"./es3/property-literals":89,"./es5/properties.mutators":90,"./es6/arrow-functions":91,"./es6/block-scoping":92,"./es6/classes":93,"./es6/constants":94,"./es6/destructuring":95,"./es6/for-of":96,"./es6/modules":97,"./es6/object-super":98,"./es6/parameters.default":99,"./es6/parameters.rest":100,"./es6/properties.computed":101,"./es6/properties.shorthand":102,"./es6/regex.sticky":103,"./es6/regex.unicode":104,"./es6/spec.block-scoping":105,"./es6/spec.symbols":106,"./es6/spec.template-literals":107,"./es6/spread":108,"./es6/tail-call":109,"./es6/template-literals":110,"./es7/async-functions":111,"./es7/class-properties":112,"./es7/comprehensions":113,"./es7/decorators":114,"./es7/do-expressions":115,"./es7/exponentiation-operator":116,"./es7/export-extensions":117,"./es7/function-bind":118,"./es7/object-rest-spread":119,"./es7/trailing-function-commas":120,"./internal/block-hoist":123,"./internal/explode":124,"./internal/hoist-directives":125,"./internal/module-formatter":126,"./internal/modules":127,"./internal/shadow-functions":128,"./internal/validation":129,"./minification/dead-code-elimination":130,"./minification/inline-expressions":131,"./minification/member-expression-literals":132,"./minification/property-literals":133,"./minification/remove-console":134,"./minification/remove-debugger":135,"./optimisation/flow.for-of":136,"./optimisation/react.constant-elements":137,"./optimisation/react.inline-elements":138,"./other/async-to-generator":139,"./other/bluebird-coroutines":140,"./other/flow":141,"./other/jscript":142,"./other/react":144,"./other/react-compat":143,"./other/regenerator":145,"./other/runtime":147,"./other/strict":148,"./spec/block-scoped-functions":149,"./spec/function-name":150,"./spec/proto-to-assign":151,"./spec/undefined-to-void":152,"./utility/inline-environment-variables":153,"./validation/react":154,"./validation/undeclared-variable-check":155}],123:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _lodashCollectionSortBy = require("lodash/collection/sortBy");

var _lodashCollectionSortBy2 = _interopRequireDefault(_lodashCollectionSortBy);

var metadata = {
  group: "builtin-trailing"
};

exports.metadata = metadata;
// Priority:
//
//  - 0 We want this to be at the **very** bottom
//  - 1 Default node position
//  - 2 Priority over normal nodes
//  - 3 We want this to be at the **very** top

var BlockStatement = {
  exit: function exit(node) {
    var hasChange = false;
    for (var i = 0; i < node.body.length; i++) {
      var bodyNode = node.body[i];
      if (bodyNode && bodyNode._blockHoist != null) hasChange = true;
    }
    if (!hasChange) return;

    node.body = (0, _lodashCollectionSortBy2["default"])(node.body, function (bodyNode) {
      var priority = bodyNode && bodyNode._blockHoist;
      if (priority == null) priority = 1;
      if (priority === true) priority = 2;

      // Higher priorities should move toward the top.
      return -1 * priority;
    });
  }
};

exports.BlockStatement = BlockStatement;
exports.Program = BlockStatement;
},{"lodash/collection/sortBy":336}],124:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _lodashLangClone = require("lodash/lang/clone");

var _lodashLangClone2 = _interopRequireDefault(_lodashLangClone);

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

var metadata = {
  group: "builtin-setup"
};

exports.metadata = metadata;
function buildClone(bindingKey, refKey) {
  return function (node) {
    if (node[bindingKey] === node[refKey]) {
      node[refKey] = t.removeComments((0, _lodashLangClone2["default"])(node[refKey]));
    }
  };
}

function buildListClone(listKey, bindingKey, refKey) {
  var clone = buildClone(bindingKey, refKey);

  return function (node) {
    if (!node[listKey]) return;

    var _arr = node[listKey];
    for (var _i = 0; _i < _arr.length; _i++) {
      var subNode = _arr[_i];
      clone(subNode);
    }
  };
}

var Property = buildClone("value", "key");
exports.Property = Property;
var ExportDeclaration = buildListClone("specifiers", "local", "exported");
exports.ExportDeclaration = ExportDeclaration;
var ImportDeclaration = buildListClone("specifiers", "local", "imported");
exports.ImportDeclaration = ImportDeclaration;
},{"../../../types":169,"lodash/lang/clone":402}],125:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

var metadata = {
  group: "builtin-setup"
};

exports.metadata = metadata;
var BlockStatement = {
  exit: function exit(node) {
    for (var i = 0; i < node.body.length; i++) {
      var bodyNode = node.body[i];
      if (t.isExpressionStatement(bodyNode) && t.isLiteral(bodyNode.expression)) {
        bodyNode._blockHoist = Infinity;
      } else {
        return;
      }
    }
  }
};

exports.BlockStatement = BlockStatement;
exports.Program = BlockStatement;
},{"../../../types":169}],126:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _helpersStrict = require("../../helpers/strict");

var strict = _interopRequireWildcard(_helpersStrict);

var metadata = {
  group: "builtin-modules"
};

exports.metadata = metadata;
var Program = {
  exit: function exit(program, parent, scope, file) {
    strict.wrap(program, function () {
      // ensure that these are at the top, just like normal imports
      var _arr = file.dynamicImports;
      for (var _i = 0; _i < _arr.length; _i++) {
        var node = _arr[_i];
        node._blockHoist = 3;
      }

      program.body = file.dynamicImports.concat(program.body);
    });

    if (!file.transformers["es6.modules"].canTransform()) return;

    if (file.moduleFormatter.transform) {
      file.moduleFormatter.transform(program);
    }
  }
};
exports.Program = Program;
},{"../../helpers/strict":70}],127:[function(require,module,exports){
// in this transformer we have to split up classes and function declarations
// from their exports. why? because sometimes we need to replace classes with
// nodes that aren't allowed in the same contexts. also, if you're exporting
// a generator function as a default then regenerator will destroy the export
// declaration and leave a variable declaration in it's place... yeah, handy.

"use strict";

exports.__esModule = true;
exports.ImportDeclaration = ImportDeclaration;
exports.ExportDefaultDeclaration = ExportDefaultDeclaration;
exports.ExportNamedDeclaration = ExportNamedDeclaration;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _lodashLangClone = require("lodash/lang/clone");

var _lodashLangClone2 = _interopRequireDefault(_lodashLangClone);

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

var metadata = {
  group: "builtin-setup"
};

exports.metadata = metadata;

function ImportDeclaration(node, parent, scope, file) {
  if (node.source) {
    node.source.value = file.resolveModuleSource(node.source.value);
  }
}

exports.ExportAllDeclaration = ImportDeclaration;

function ExportDefaultDeclaration(node, parent, scope) {
  ImportDeclaration.apply(this, arguments);

  var declar = node.declaration;

  var getDeclar = function getDeclar() {
    declar._ignoreUserWhitespace = true;
    return declar;
  };

  if (t.isClassDeclaration(declar)) {
    // export default class Foo {};
    node.declaration = declar.id;
    return [getDeclar(), node];
  } else if (t.isClassExpression(declar)) {
    // export default class {};
    var temp = scope.generateUidIdentifier("default");
    declar = t.variableDeclaration("var", [t.variableDeclarator(temp, declar)]);
    node.declaration = temp;
    return [getDeclar(), node];
  } else if (t.isFunctionDeclaration(declar)) {
    // export default function Foo() {}
    node._blockHoist = 2;
    node.declaration = declar.id;
    return [getDeclar(), node];
  }
}

function buildExportSpecifier(id) {
  return t.exportSpecifier((0, _lodashLangClone2["default"])(id), (0, _lodashLangClone2["default"])(id));
}

function ExportNamedDeclaration(node, parent, scope) {
  ImportDeclaration.apply(this, arguments);

  var declar = node.declaration;

  var getDeclar = function getDeclar() {
    declar._ignoreUserWhitespace = true;
    return declar;
  };

  if (t.isClassDeclaration(declar)) {
    // export class Foo {}
    node.specifiers = [buildExportSpecifier(declar.id)];
    node.declaration = null;
    return [getDeclar(), node];
  } else if (t.isFunctionDeclaration(declar)) {
    // export function Foo() {}
    node.specifiers = [buildExportSpecifier(declar.id)];
    node.declaration = null;
    node._blockHoist = 2;
    return [getDeclar(), node];
  } else if (t.isVariableDeclaration(declar)) {
    // export var foo = "bar";
    var specifiers = [];
    var bindings = this.get("declaration").getBindingIdentifiers();
    for (var key in bindings) {
      specifiers.push(buildExportSpecifier(bindings[key]));
    }
    return [declar, t.exportNamedDeclaration(null, specifiers)];
  }
}

var Program = {
  enter: function enter(node) {
    var imports = [];
    var rest = [];

    for (var i = 0; i < node.body.length; i++) {
      var bodyNode = node.body[i];
      if (t.isImportDeclaration(bodyNode)) {
        imports.push(bodyNode);
      } else {
        rest.push(bodyNode);
      }
    }

    node.body = imports.concat(rest);
  },

  exit: function exit(node, parent, scope, file) {
    if (!file.transformers["es6.modules"].canTransform()) return;

    if (file.moduleFormatter.setup) {
      file.moduleFormatter.setup();
    }
  }
};
exports.Program = Program;
},{"../../../types":169,"lodash/lang/clone":402}],128:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.ThisExpression = ThisExpression;
exports.ReferencedIdentifier = ReferencedIdentifier;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

var metadata = {
  group: "builtin-trailing"
};

exports.metadata = metadata;
function remap(path, key, create) {
  // ensure that we're shadowed
  if (!path.inShadow()) return;

  var fnPath = path.findParent(function (node, path) {
    return !node.shadow && (path.isFunction() || path.isProgram());
  });

  var cached = fnPath.getData(key);
  if (cached) return cached;

  var init = create();
  var id = path.scope.generateUidIdentifier(key);

  fnPath.setData(key, id);
  fnPath.scope.push({ id: id, init: init });

  return id;
}

function ThisExpression() {
  return remap(this, "this", function () {
    return t.thisExpression();
  });
}

function ReferencedIdentifier(node) {
  if (node.name === "arguments" && !node._shadowedFunctionLiteral) {
    return remap(this, "arguments", function () {
      return t.identifier("arguments");
    });
  }
}
},{"../../../types":169}],129:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.ForOfStatement = ForOfStatement;
exports.MethodDefinition = MethodDefinition;
exports.Property = Property;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _messages = require("../../../messages");

var messages = _interopRequireWildcard(_messages);

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

var metadata = {
  group: "builtin-setup"
};

exports.metadata = metadata;

function ForOfStatement(node, parent, scope, file) {
  var left = node.left;
  if (t.isVariableDeclaration(left)) {
    var declar = left.declarations[0];
    if (declar.init) throw file.errorWithNode(declar, messages.get("noAssignmentsInForHead"));
  }
}

exports.ForInStatement = ForOfStatement;

function MethodDefinition(node) {
  if (node.kind !== "constructor") {
    // get constructor() {}
    var isConstructor = !node.computed && t.isIdentifier(node.key, { name: "constructor" });

    // get ["constructor"]() {}
    isConstructor = isConstructor || t.isLiteral(node.key, { value: "constructor" });

    if (isConstructor) {
      throw this.errorWithNode(messages.get("classesIllegalConstructorKind"));
    }
  }

  Property.apply(this, arguments);
}

function Property(node, parent, scope, file) {
  if (node.kind === "set") {
    if (node.value.params.length !== 1) {
      throw file.errorWithNode(node.value, messages.get("settersInvalidParamLength"));
    }

    var first = node.value.params[0];
    if (t.isRestElement(first)) {
      throw file.errorWithNode(first, messages.get("settersNoRest"));
    }
  }
}
},{"../../../messages":47,"../../../types":169}],130:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.ReferencedIdentifier = ReferencedIdentifier;
exports.FunctionDeclaration = FunctionDeclaration;
exports.VariableDeclarator = VariableDeclarator;
exports.ConditionalExpression = ConditionalExpression;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

function toStatements(node) {
  if (t.isBlockStatement(node)) {
    var hasBlockScoped = false;

    for (var i = 0; i < node.body.length; i++) {
      var bodyNode = node.body[i];
      if (t.isBlockScoped(bodyNode)) hasBlockScoped = true;
    }

    if (!hasBlockScoped) {
      return node.body;
    }
  }

  return node;
}

var metadata = {
  optional: true,
  group: "builtin-setup"
};

exports.metadata = metadata;

function ReferencedIdentifier(node, parent, scope) {
  var binding = scope.getBinding(node.name);
  if (!binding || binding.references > 1 || !binding.constant) return;
  if (binding.kind === "param" || binding.kind === "module") return;

  var replacement = binding.path.node;
  if (t.isVariableDeclarator(replacement)) {
    replacement = replacement.init;
  }
  if (!replacement) return;

  if (this.findParent(function (node) {
    return replacement;
  })) {
    return;
  }

  t.toExpression(replacement);
  scope.removeBinding(node.name);
  binding.path.remove();
  return replacement;
}

function FunctionDeclaration(node, parent, scope) {
  var bindingInfo = scope.getBinding(node.id.name);
  if (bindingInfo && !bindingInfo.referenced) {
    this.remove();
  }
}

exports.ClassDeclaration = FunctionDeclaration;

function VariableDeclarator(node, parent, scope) {
  if (!t.isIdentifier(node.id) || !scope.isPure(node.init)) return;
  FunctionDeclaration.apply(this, arguments);
}

function ConditionalExpression(node, parent, scope) {
  var evaluateTest = this.get("test").evaluateTruthy();
  if (evaluateTest === true) {
    return node.consequent;
  } else if (evaluateTest === false) {
    return node.alternate;
  }
}

var IfStatement = {
  exit: function exit(node, parent, scope) {
    var consequent = node.consequent;
    var alternate = node.alternate;
    var test = node.test;

    var evaluateTest = this.get("test").evaluateTruthy();

    // we can check if a test will be truthy 100% and if so then we can inline
    // the consequent and completely ignore the alternate
    //
    //   if (true) { foo; } -> { foo; }
    //   if ("foo") { foo; } -> { foo; }
    //

    if (evaluateTest === true) {
      return toStatements(consequent);
    }

    // we can check if a test will be falsy 100% and if so we can inline the
    // alternate if there is one and completely remove the consequent
    //
    //   if ("") { bar; } else { foo; } -> { foo; }
    //   if ("") { bar; } ->
    //

    if (evaluateTest === false) {
      if (alternate) {
        return toStatements(alternate);
      } else {
        return this.remove();
      }
    }

    // remove alternate blocks that are empty
    //
    //   if (foo) { foo; } else {} -> if (foo) { foo; }
    //

    if (t.isBlockStatement(alternate) && !alternate.body.length) {
      alternate = node.alternate = null;
    }

    // if the consequent block is empty turn alternate blocks into a consequent
    // and flip the test
    //
    //   if (foo) {} else { bar; } -> if (!foo) { bar; }
    //

    if (t.isBlockStatement(consequent) && !consequent.body.length && t.isBlockStatement(alternate) && alternate.body.length) {
      node.consequent = node.alternate;
      node.alternate = null;
      node.test = t.unaryExpression("!", test, true);
    }
  }
};
exports.IfStatement = IfStatement;
},{"../../../types":169}],131:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.Identifier = Identifier;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

var metadata = {
  optional: true,
  group: "builtin-setup"
};

exports.metadata = metadata;
var Expression = {
  exit: function exit(node, parent, scope) {
    var res = this.evaluate();
    if (res.confident) return t.valueToNode(res.value);
  }
};

exports.Expression = Expression;

function Identifier() {}

// override Expression
},{"../../../types":169}],132:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

var metadata = {
  optional: true,
  group: "builtin-trailing"
};

exports.metadata = metadata;
var MemberExpression = {
  exit: function exit(node) {
    var prop = node.property;
    if (node.computed && t.isLiteral(prop) && t.isValidIdentifier(prop.value)) {
      // foo["bar"] => foo.bar
      node.property = t.identifier(prop.value);
      node.computed = false;
    }
  }
};
exports.MemberExpression = MemberExpression;
},{"../../../types":169}],133:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

var metadata = {
  optional: true,
  group: "builtin-trailing"
};

exports.metadata = metadata;
var Property = {
  exit: function exit(node) {
    var key = node.key;
    if (t.isLiteral(key) && t.isValidIdentifier(key.value)) {
      // "foo": "bar" -> foo: "bar"
      node.key = t.identifier(key.value);
      node.computed = false;
    }
  }
};
exports.Property = Property;
},{"../../../types":169}],134:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.CallExpression = CallExpression;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

var metadata = {
  optional: true,
  group: "builtin-setup"
};

exports.metadata = metadata;

function CallExpression(node, parent) {
  if (this.get("callee").matchesPattern("console", true)) {
    if (t.isExpressionStatement(parent)) {
      this.parentPath.remove();
    } else {
      this.remove();
    }
  }
}
},{"../../../types":169}],135:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.ExpressionStatement = ExpressionStatement;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

var metadata = {
  optional: true,
  group: "builtin-setup"
};

exports.metadata = metadata;

function ExpressionStatement(node) {
  if (this.get("expression").isIdentifier({ name: "debugger" })) {
    this.remove();
  }
}
},{"../../../types":169}],136:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.ForOfStatement = ForOfStatement;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _es6ForOf = require("../es6/for-of");

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

var metadata = {
  optional: true
};

exports.metadata = metadata;

function ForOfStatement(node, parent, scope, file) {
  if (this.get("right").isTypeGeneric("Array")) {
    return _es6ForOf._ForOfStatementArray.call(this, node, scope, file);
  }
}
},{"../../../types":169,"../es6/for-of":96}],137:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.JSXElement = JSXElement;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _helpersReact = require("../../helpers/react");

var react = _interopRequireWildcard(_helpersReact);

var metadata = {
  optional: true
};

exports.metadata = metadata;
var immutabilityVisitor = {
  enter: function enter(node, parent, scope, state) {
    var _this = this;

    var stop = function stop() {
      state.isImmutable = false;
      _this.stop();
    };

    if (this.isJSXClosingElement()) {
      this.skip();
      return;
    }

    if (this.isJSXIdentifier({ name: "ref" }) && this.parentPath.isJSXAttribute({ name: node })) {
      return stop();
    }

    if (this.isJSXIdentifier() || this.isIdentifier() || this.isJSXMemberExpression()) {
      return;
    }

    if (!this.isImmutable()) stop();
  }
};

function JSXElement(node, parent, scope, file) {
  if (node._hoisted) return;

  var state = { isImmutable: true };
  this.traverse(immutabilityVisitor, state);

  if (state.isImmutable) {
    this.hoist();
  } else {
    node._hoisted = true;
  }
}
},{"../../helpers/react":66}],138:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.JSXElement = JSXElement;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _helpersReact = require("../../helpers/react");

var react = _interopRequireWildcard(_helpersReact);

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

var metadata = {
  optional: true
};

exports.metadata = metadata;
function hasRefOrSpread(attrs) {
  for (var i = 0; i < attrs.length; i++) {
    var attr = attrs[i];
    if (t.isJSXSpreadAttribute(attr)) return true;
    if (isJSXAttributeOfName(attr, "ref")) return true;
  }
  return false;
}

function isJSXAttributeOfName(attr, name) {
  return t.isJSXAttribute(attr) && t.isJSXIdentifier(attr.name, { name: name });
}

function JSXElement(node, parent, scope, file) {
  // filter
  var open = node.openingElement;
  if (hasRefOrSpread(open.attributes)) return;

  // init
  var isComponent = true;
  var props = t.objectExpression([]);
  var obj = t.objectExpression([]);
  var key = t.literal(null);
  var type = open.name;

  if (t.isJSXIdentifier(type) && react.isCompatTag(type.name)) {
    type = t.literal(type.name);
    isComponent = false;
  }

  function pushElemProp(key, value) {
    pushProp(obj.properties, t.identifier(key), value);
  }

  function pushProp(objProps, key, value) {
    objProps.push(t.property("init", key, value));
  }

  // metadata
  pushElemProp("type", type);
  pushElemProp("ref", t.literal(null));

  if (node.children.length) {
    pushProp(props.properties, t.identifier("children"), t.arrayExpression(react.buildChildren(node)));
  }

  // props
  for (var i = 0; i < open.attributes.length; i++) {
    var attr = open.attributes[i];
    if (isJSXAttributeOfName(attr, "key")) {
      key = attr.value;
    } else {
      pushProp(props.properties, attr.name, attr.value || t.identifier("true"));
    }
  }

  if (isComponent) {
    props = t.callExpression(file.addHelper("default-props"), [t.memberExpression(type, t.identifier("defaultProps")), props]);
  }

  pushElemProp("props", props);

  // key
  pushElemProp("key", key);

  return obj;
}
},{"../../../types":169,"../../helpers/react":66}],139:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.Func /*tion*/ = Func;

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _helpersRemapAsyncToGenerator = require("../../helpers/remap-async-to-generator");

var _helpersRemapAsyncToGenerator2 = _interopRequireDefault(_helpersRemapAsyncToGenerator);

var _bluebirdCoroutines = require("./bluebird-coroutines");

exports.manipulateOptions = _bluebirdCoroutines.manipulateOptions;
var metadata = {
  optional: true,
  dependencies: ["es7.asyncFunctions", "es6.classes"]
};

exports.metadata = metadata;

function Func(node, parent, scope, file) {
  if (!node.async || node.generator) return;

  return (0, _helpersRemapAsyncToGenerator2["default"])(node, file.addHelper("async-to-generator"), scope);
}
},{"../../helpers/remap-async-to-generator":68,"./bluebird-coroutines":140}],140:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.manipulateOptions = manipulateOptions;
exports.Func /*tion*/ = Func;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _helpersRemapAsyncToGenerator = require("../../helpers/remap-async-to-generator");

var _helpersRemapAsyncToGenerator2 = _interopRequireDefault(_helpersRemapAsyncToGenerator);

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

function manipulateOptions(opts) {
  opts.blacklist.push("regenerator");
}

var metadata = {
  optional: true,
  dependencies: ["es7.asyncFunctions", "es6.classes"]
};

exports.metadata = metadata;

function Func(node, parent, scope, file) {
  if (!node.async || node.generator) return;

  return (0, _helpersRemapAsyncToGenerator2["default"])(node, t.memberExpression(file.addImport("bluebird", null, "absolute"), t.identifier("coroutine")), scope);
}
},{"../../../types":169,"../../helpers/remap-async-to-generator":68}],141:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.Flow = Flow;
exports.ClassProperty = ClassProperty;
exports.Class = Class;
exports.Func /*tion*/ = Func;
exports.TypeCastExpression = TypeCastExpression;
exports.ImportDeclaration = ImportDeclaration;
exports.ExportDeclaration = ExportDeclaration;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

function Flow(node) {
  this.remove();
}

function ClassProperty(node) {
  node.typeAnnotation = null;
}

function Class(node) {
  node["implements"] = null;
}

function Func(node) {
  for (var i = 0; i < node.params.length; i++) {
    var param = node.params[i];
    param.optional = false;
  }
}

function TypeCastExpression(node) {
  return node.expression;
}

function ImportDeclaration(node) {
  if (node.isType) this.remove();
}

function ExportDeclaration(node) {
  if (this.get("declaration").isTypeAlias()) this.remove();
}
},{"../../../types":169}],142:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.FunctionExpression = FunctionExpression;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

var metadata = {
  optional: true
};

exports.metadata = metadata;

function FunctionExpression(node, print) {
  if (!node.id) return;
  node._ignoreUserWhitespace = true;

  return t.callExpression(t.functionExpression(null, [], t.blockStatement([t.toStatement(node), t.returnStatement(node.id)])), []);
}
},{"../../../types":169}],143:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.manipulateOptions = manipulateOptions;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _helpersReact = require("../../helpers/react");

var react = _interopRequireWildcard(_helpersReact);

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

function manipulateOptions(opts) {
  opts.blacklist.push("react");
}

var metadata = {
  optional: true,
  group: "builtin-advanced"
};

exports.metadata = metadata;
require("../../helpers/build-react-transformer")(exports, {
  pre: function pre(state) {
    state.callee = state.tagExpr;
  },

  post: function post(state) {
    if (react.isCompatTag(state.tagName)) {
      state.call = t.callExpression(t.memberExpression(t.memberExpression(t.identifier("React"), t.identifier("DOM")), state.tagExpr, t.isLiteral(state.tagExpr)), state.args);
    }
  }
});
},{"../../../types":169,"../../helpers/build-react-transformer":59,"../../helpers/react":66}],144:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.Program = Program;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _helpersReact = require("../../helpers/react");

var react = _interopRequireWildcard(_helpersReact);

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

var JSX_ANNOTATION_REGEX = /^\*\s*@jsx\s+([^\s]+)/;

var metadata = {
  group: "builtin-advanced"
};

exports.metadata = metadata;

function Program(node, parent, scope, file) {
  var id = file.opts.jsxPragma;

  for (var i = 0; i < file.ast.comments.length; i++) {
    var comment = file.ast.comments[i];
    var matches = JSX_ANNOTATION_REGEX.exec(comment.value);
    if (matches) {
      id = matches[1];
      if (id === "React.DOM") {
        throw file.errorWithNode(comment, "The @jsx React.DOM pragma has been deprecated as of React 0.12");
      } else {
        break;
      }
    }
  }

  file.set("jsxIdentifier", id.split(".").map(t.identifier).reduce(function (object, property) {
    return t.memberExpression(object, property);
  }));
}

require("../../helpers/build-react-transformer")(exports, {
  pre: function pre(state) {
    var tagName = state.tagName;
    var args = state.args;
    if (react.isCompatTag(tagName)) {
      args.push(t.literal(tagName));
    } else {
      args.push(state.tagExpr);
    }
  },

  post: function post(state, file) {
    state.callee = file.get("jsxIdentifier");
  }
});
},{"../../../types":169,"../../helpers/build-react-transformer":59,"../../helpers/react":66}],145:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.Func /*tion*/ = Func;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _regenerator = require("regenerator");

var _regenerator2 = _interopRequireDefault(_regenerator);

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

var _astTypes = require("ast-types");

var metadata = {
  group: "regenerator"
};

exports.metadata = metadata;

function Func(node) {
  if (node.async || node.generator) {
    // Although this code transforms only the subtree rooted at the given
    // Function node, that node might contain other generator functions
    // that will also be transformed. It might help performance to ignore
    // nested functions, and rely on the traversal to visit them later,
    // but that's a small optimization. Starting here instead of at the
    // root of the AST is the key optimization, since huge async/generator
    // functions are relatively rare.
    _regenerator2["default"].transform(convertTraversalPathToNodePath(this));
  }
}

// Given a TraversalPath, return a NodePath that includes full ancestry
// information (up to and including the Program node). This is complicated
// by having to include intermediate objects like blockStatement.body
// arrays, in addition to Node objects.
function convertTraversalPathToNodePath(path) {
  var programNode;
  var keysAlongPath = [];

  while (path) {
    var pp = path.parentPath;
    var parentNode = pp && pp.node;
    if (parentNode) {
      keysAlongPath.push(path.key);

      if (parentNode !== path.container) {
        var found = Object.keys(parentNode).some(function (containerKey) {
          if (parentNode[containerKey] === path.container) {
            keysAlongPath.push(containerKey);
            return true;
          }
        });

        if (!found) {
          throw new Error("Failed to find container object in parent node");
        }
      }

      if (t.isProgram(parentNode)) {
        programNode = parentNode;
        break;
      }
    }

    path = pp;
  }

  if (!programNode) {
    throw new Error("Failed to find root Program node");
  }

  var nodePath = new _astTypes.NodePath(programNode);

  while (keysAlongPath.length > 0) {
    nodePath = nodePath.get(keysAlongPath.pop());
  }

  return nodePath;
}
},{"../../../types":169,"ast-types":188,"regenerator":442}],146:[function(require,module,exports){
module.exports={
  "builtins": {
    "Symbol": "symbol",
    "Promise": "promise",
    "Map": "map",
    "WeakMap": "weak-map",
    "Set": "set",
    "WeakSet": "weak-set"
  },

  "methods": {
    "Array": {
      "concat": "array/concat",
      "copyWithin": "array/copy-within",
      "entries": "array/entries",
      "every": "array/every",
      "fill": "array/fill",
      "filter": "array/filter",
      "findIndex": "array/find-index",
      "find": "array/find",
      "forEach": "array/for-each",
      "from": "array/from",
      "includes": "array/includes",
      "indexOf": "array/index-of",
      "join": "array/join",
      "keys": "array/keys",
      "lastIndexOf": "array/last-index-of",
      "map": "array/map",
      "of": "array/of",
      "pop": "array/pop",
      "push": "array/push",
      "reduceRight": "array/reduce-right",
      "reduce": "array/reduce",
      "reverse": "array/reverse",
      "shift": "array/shift",
      "slice": "array/slice",
      "some": "array/some",
      "sort": "array/sort",
      "splice": "array/splice",
      "turn": "array/turn",
      "unshift": "array/unshift",
      "values": "array/values"
    },

    "Object": {
      "assign": "object/assign",
      "classof": "object/classof",
      "create": "object/create",
      "define": "object/define",
      "defineProperties": "object/define-properties",
      "defineProperty": "object/define-property",
      "entries": "object/entries",
      "freeze": "object/freeze",
      "getOwnPropertyDescriptor": "object/get-own-property-descriptor",
      "getOwnPropertyDescriptors": "object/get-own-property-descriptors",
      "getOwnPropertyNames": "object/get-own-property-names",
      "getOwnPropertySymbols": "object/get-own-property-symbols",
      "getPrototypePf": "object/get-prototype-of",
      "index": "object/index",
      "isExtensible": "object/is-extensible",
      "isFrozen": "object/is-frozen",
      "isObject": "object/is-object",
      "isSealed": "object/is-sealed",
      "is": "object/is",
      "keys": "object/keys",
      "make": "object/make",
      "preventExtensions": "object/prevent-extensions",
      "seal": "object/seal",
      "setPrototypeOf": "object/set-prototype-of",
      "values": "object/values"
    },

    "RegExp": {
      "escape": "regexp/escape"
    },

    "Function": {
      "only": "function/only",
      "part": "function/part"
    },

    "Math": {
      "acosh": "math/acosh",
      "asinh": "math/asinh",
      "atanh": "math/atanh",
      "cbrt": "math/cbrt",
      "clz32": "math/clz32",
      "cosh": "math/cosh",
      "expm1": "math/expm1",
      "fround": "math/fround",
      "hypot": "math/hypot",
      "pot": "math/pot",
      "imul": "math/imul",
      "log10": "math/log10",
      "log1p": "math/log1p",
      "log2": "math/log2",
      "sign": "math/sign",
      "sinh": "math/sinh",
      "tanh": "math/tanh",
      "trunc": "math/trunc"
    },

    "Date": {
      "addLocale": "date/add-locale",
      "formatUTC": "date/format-utc",
      "format": "date/format"
    },

    "Symbol": {
      "for": "symbol/for",
      "hasInstance": "symbol/for-instance",
      "is-concat-spreadable": "symbol/is-concat-spreadable",
      "iterator": "symbol/iterator",
      "keyFor": "symbol/key-for",
      "match": "symbol/match",
      "replace": "symbol/replace",
      "search": "symbol/search",
      "species": "symbol/species",
      "split": "symbol/split",
      "toPrimitive": "symbol/to-primitive",
      "toStringTag": "symbol/to-string-tag",
      "unscopables": "symbol/unscopables"
    },

    "String": {
      "at": "string/at",
      "codePointAt": "string/code-point-at",
      "endsWith": "string/ends-with",
      "escapeHTML": "string/escape-html",
      "fromCodePoint": "string/from-code-point",
      "includes": "string/includes",
      "raw": "string/raw",
      "repeat": "string/repeat",
      "startsWith": "string/starts-with",
      "unescapeHTML": "string/unescape-html"
    },

    "Number": {
      "EPSILON": "number/epsilon",
      "isFinite": "number/is-finite",
      "isInteger": "number/is-integer",
      "isNaN": "number/is-nan",
      "isSafeInteger": "number/is-safe-integer",
      "MAX_SAFE_INTEGER": "number/max-safe-integer",
      "MIN_SAFE_INTEGER": "number/min-safe-integer",
      "parseFloat": "number/parse-float",
      "parseInt": "number/parse-int",
      "random": "number/random"
    },

    "Reflect": {
      "apply": "reflect/apply",
      "construct": "reflect/construct",
      "defineProperty": "reflect/define-property",
      "deleteProperty": "reflect/delete-property",
      "enumerate": "reflect/enumerate",
      "getOwnPropertyDescriptor": "reflect/get-own-property-descriptor",
      "getPrototypeOf": "reflect/get-prototype-of",
      "get": "reflect/get",
      "has": "reflect/has",
      "isExtensible": "reflect/is-extensible",
      "ownKeys": "reflect/own-keys",
      "preventExtensions": "reflect/prevent-extensions",
      "setPrototypeOf": "reflect/set-prototype-of",
      "set": "reflect/set"
    }
  }
}

},{}],147:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.pre = pre;
exports.ReferencedIdentifier = ReferencedIdentifier;
exports.CallExpression = CallExpression;
exports.BinaryExpression = BinaryExpression;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _lodashCollectionIncludes = require("lodash/collection/includes");

var _lodashCollectionIncludes2 = _interopRequireDefault(_lodashCollectionIncludes);

var _traversal = require("../../../../traversal");

var _traversal2 = _interopRequireDefault(_traversal);

var _util = require("../../../../util");

var util = _interopRequireWildcard(_util);

var _lodashObjectHas = require("lodash/object/has");

var _lodashObjectHas2 = _interopRequireDefault(_lodashObjectHas);

var _types = require("../../../../types");

var t = _interopRequireWildcard(_types);

var _definitions = require("./definitions");

var _definitions2 = _interopRequireDefault(_definitions);

var isSymbolIterator = t.buildMatchMemberExpression("Symbol.iterator");

var RUNTIME_MODULE_NAME = "babel-runtime";

var metadata = {
  optional: true,
  group: "builtin-post-modules"
};

exports.metadata = metadata;

function pre(file) {
  file.set("helperGenerator", function (name) {
    return file.addImport("" + RUNTIME_MODULE_NAME + "/helpers/" + name, name, "absoluteDefault");
  });

  file.setDynamic("regeneratorIdentifier", function () {
    return file.addImport("" + RUNTIME_MODULE_NAME + "/regenerator", "regeneratorRuntime", "absoluteDefault");
  });
}

function ReferencedIdentifier(node, parent, scope, file) {
  if (node.name === "regeneratorRuntime") {
    return file.get("regeneratorIdentifier");
  }

  if (t.isMemberExpression(parent)) return;
  if (!(0, _lodashObjectHas2["default"])(_definitions2["default"].builtins, node.name)) return;
  if (scope.getBindingIdentifier(node.name)) return;

  // Symbol() -> _core.Symbol(); new Promise -> new _core.Promise
  var modulePath = _definitions2["default"].builtins[node.name];
  return file.addImport("" + RUNTIME_MODULE_NAME + "/core-js/" + modulePath, node.name, "absoluteDefault");
}

function CallExpression(node, parent, scope, file) {
  // arr[Symbol.iterator]() -> _core.$for.getIterator(arr)

  if (node.arguments.length) return;

  var callee = node.callee;
  if (!t.isMemberExpression(callee)) return;
  if (!callee.computed) return;
  if (!this.get("callee.property").matchesPattern("Symbol.iterator")) return;

  return t.callExpression(file.addImport("" + RUNTIME_MODULE_NAME + "/core-js/get-iterator", "getIterator", "absoluteDefault"), [callee.object]);
}

function BinaryExpression(node, parent, scope, file) {
  // Symbol.iterator in arr -> core.$for.isIterable(arr)

  if (node.operator !== "in") return;
  if (!this.get("left").matchesPattern("Symbol.iterator")) return;

  return t.callExpression(file.addImport("" + RUNTIME_MODULE_NAME + "/core-js/is-iterable", "isIterable", "absoluteDefault"), [node.right]);
}

var MemberExpression = {
  enter: function enter(node, parent, scope, file) {
    // Array.from -> _core.Array.from

    if (!this.isReferenced()) return;

    var obj = node.object;
    var prop = node.property;

    if (!t.isReferenced(obj, node)) return;

    if (node.computed) return;

    if (!(0, _lodashObjectHas2["default"])(_definitions2["default"].methods, obj.name)) return;

    var methods = _definitions2["default"].methods[obj.name];
    if (!(0, _lodashObjectHas2["default"])(methods, prop.name)) return;

    if (scope.getBindingIdentifier(obj.name)) return;

    var modulePath = methods[prop.name];
    return file.addImport("" + RUNTIME_MODULE_NAME + "/core-js/" + modulePath, "" + obj.name + "$" + prop.name, "absoluteDefault");
  },

  exit: function exit(node, parent, scope, file) {
    if (!this.isReferenced()) return;

    var prop = node.property;
    var obj = node.object;

    if (!(0, _lodashObjectHas2["default"])(_definitions2["default"].builtins, obj.name)) return;
    if (scope.getBindingIdentifier(obj.name)) return;

    var modulePath = _definitions2["default"].builtins[obj.name];
    return t.memberExpression(file.addImport("" + RUNTIME_MODULE_NAME + "/core-js/" + modulePath, "" + obj.name, "absoluteDefault"), prop);
  }
};
exports.MemberExpression = MemberExpression;
},{"../../../../traversal":157,"../../../../types":169,"../../../../util":173,"./definitions":146,"lodash/collection/includes":332,"lodash/object/has":420}],148:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.ThisExpression = ThisExpression;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _messages = require("../../../messages");

var messages = _interopRequireWildcard(_messages);

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

var metadata = {
  group: "builtin-setup"
};

exports.metadata = metadata;
var THIS_BREAK_KEYS = ["FunctionExpression", "FunctionDeclaration", "ClassExpression", "ClassDeclaration"];

var Program = {
  enter: function enter(program, parent, scope, file) {
    var first = program.body[0];

    var directive;
    if (t.isExpressionStatement(first) && t.isLiteral(first.expression, { value: "use strict" })) {
      directive = first;
    } else {
      directive = t.expressionStatement(t.literal("use strict"));
      this.unshiftContainer("body", directive);
      if (first) {
        directive.leadingComments = first.leadingComments;
        first.leadingComments = [];
      }
    }
    directive._blockHoist = Infinity;
  }
};

exports.Program = Program;

function ThisExpression() {
  if (!this.findParent(function (node) {
    return !node.shadow && THIS_BREAK_KEYS.indexOf(node.type) >= 0;
  })) {
    return t.identifier("undefined");
  }
}
},{"../../../messages":47,"../../../types":169}],149:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.BlockStatement = BlockStatement;
exports.SwitchCase = SwitchCase;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

function statementList(key, path, file) {
  var paths = path.get(key);

  for (var i = 0; i < paths.length; i++) {
    var path = paths[i];

    var func = path.node;
    if (!t.isFunctionDeclaration(func)) continue;

    var declar = t.variableDeclaration("let", [t.variableDeclarator(func.id, t.toExpression(func))]);

    // hoist it up above everything else
    declar._blockHoist = 2;

    // todo: name this
    func.id = null;

    path.replaceWith(declar);
  }
}

function BlockStatement(node, parent, scope, file) {
  if (t.isFunction(parent) && parent.body === node || t.isExportDeclaration(parent)) {
    return;
  }

  statementList("body", this, file);
}

function SwitchCase(node, parent, scope, file) {
  statementList("consequent", this, file);
}
},{"../../../types":169}],150:[function(require,module,exports){
"use strict";

exports.__esModule = true;

var _helpersNameMethod = require("../../helpers/name-method");

var metadata = {
  group: "builtin-setup"
};

exports.metadata = metadata;
var FunctionExpression = {
  exit: _helpersNameMethod.bare
};

exports.FunctionExpression = FunctionExpression;
exports.ArrowFunctionExpression = FunctionExpression;
},{"../../helpers/name-method":65}],151:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.AssignmentExpression = AssignmentExpression;
exports.ExpressionStatement = ExpressionStatement;
exports.ObjectExpression = ObjectExpression;

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

var _lodashArrayPull = require("lodash/array/pull");

var _lodashArrayPull2 = _interopRequireDefault(_lodashArrayPull);

function isProtoKey(node) {
  return t.isLiteral(t.toComputedKey(node, node.key), { value: "__proto__" });
}

function isProtoAssignmentExpression(node) {
  var left = node.left;
  return t.isMemberExpression(left) && t.isLiteral(t.toComputedKey(left, left.property), { value: "__proto__" });
}

function buildDefaultsCallExpression(expr, ref, file) {
  return t.expressionStatement(t.callExpression(file.addHelper("defaults"), [ref, expr.right]));
}

var metadata = {
  secondPass: true,
  optional: true
};

exports.metadata = metadata;

function AssignmentExpression(node, parent, scope, file) {
  if (!isProtoAssignmentExpression(node)) return;

  var nodes = [];
  var left = node.left.object;
  var temp = scope.maybeGenerateMemoised(left);

  nodes.push(t.expressionStatement(t.assignmentExpression("=", temp, left)));
  nodes.push(buildDefaultsCallExpression(node, temp, file));
  if (temp) nodes.push(temp);

  return nodes;
}

function ExpressionStatement(node, parent, scope, file) {
  var expr = node.expression;
  if (!t.isAssignmentExpression(expr, { operator: "=" })) return;

  if (isProtoAssignmentExpression(expr)) {
    return buildDefaultsCallExpression(expr, expr.left.object, file);
  }
}

function ObjectExpression(node, parent, scope, file) {
  var proto;

  for (var i = 0; i < node.properties.length; i++) {
    var prop = node.properties[i];

    if (isProtoKey(prop)) {
      proto = prop.value;
      (0, _lodashArrayPull2["default"])(node.properties, prop);
    }
  }

  if (proto) {
    var args = [t.objectExpression([]), proto];
    if (node.properties.length) args.push(node);
    return t.callExpression(file.addHelper("extends"), args);
  }
}
},{"../../../types":169,"lodash/array/pull":327}],152:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.Identifier = Identifier;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

var metadata = {
  optional: true,
  react: true
};

exports.metadata = metadata;

function Identifier(node, parent) {
  if (node.name === "undefined" && this.isReferenced()) {
    return t.unaryExpression("void", t.literal(0), true);
  }
}
},{"../../../types":169}],153:[function(require,module,exports){
(function (process){
"use strict";

exports.__esModule = true;
exports.MemberExpression = MemberExpression;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

var metadata = {
  optional: true,
  group: "builtin-setup"
};

exports.metadata = metadata;
var match = t.buildMatchMemberExpression("process.env");

function MemberExpression(node) {
  if (match(node.object)) {
    var key = this.toComputedKey();
    if (t.isLiteral(key)) {
      return t.valueToNode(process.env[key.value]);
    }
  }
}
}).call(this,require('_process'))
},{"../../../types":169,"_process":200}],154:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.CallExpression = CallExpression;
exports.ModuleDeclaration = ModuleDeclaration;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _messages = require("../../../messages");

var messages = _interopRequireWildcard(_messages);

var _types = require("../../../types");

var t = _interopRequireWildcard(_types);

// check if the input Literal `source` is an alternate casing of "react"
function check(source, file) {
  if (t.isLiteral(source)) {
    var name = source.value;
    var lower = name.toLowerCase();

    if (lower === "react" && name !== lower) {
      throw file.errorWithNode(source, messages.get("didYouMean", "react"));
    }
  }
}

function CallExpression(node, parent, scope, file) {
  if (this.get("callee").isIdentifier({ name: "require" }) && node.arguments.length === 1) {
    check(node.arguments[0], file);
  }
}

function ModuleDeclaration(node, parent, scope, file) {
  check(node.source, file);
}
},{"../../../messages":47,"../../../types":169}],155:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.Identifier = Identifier;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _leven = require("leven");

var _leven2 = _interopRequireDefault(_leven);

var _messages = require("../../../messages");

var messages = _interopRequireWildcard(_messages);

var metadata = {
  optional: true
};

exports.metadata = metadata;

function Identifier(node, parent, scope, file) {
  if (!this.isReferenced()) return;
  if (scope.hasBinding(node.name)) return;

  // get the closest declaration to offer as a suggestion
  // the variable name may have just been mistyped

  var bindings = scope.getAllBindings();

  var closest;
  var shortest = -1;

  for (var name in bindings) {
    var distance = (0, _leven2["default"])(node.name, name);
    if (distance <= 0 || distance > 3) continue;
    if (distance <= shortest) continue;

    closest = name;
    shortest = distance;
  }

  var msg;
  if (closest) {
    msg = messages.get("undeclaredVariableSuggestion", node.name, closest);
  } else {
    msg = messages.get("undeclaredVariable", node.name);
  }

  //

  throw file.errorWithNode(node, msg, ReferenceError);
}
},{"../../../messages":47,"leven":321}],156:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var _path = require("./path");

var _path2 = _interopRequireDefault(_path);

var _lodashArrayCompact = require("lodash/array/compact");

var _lodashArrayCompact2 = _interopRequireDefault(_lodashArrayCompact);

var _types = require("../types");

var t = _interopRequireWildcard(_types);

var TraversalContext = (function () {
  function TraversalContext(scope, opts, state, parentPath) {
    _classCallCheck(this, TraversalContext);

    this.parentPath = parentPath;
    this.scope = scope;
    this.state = state;
    this.opts = opts;
  }

  TraversalContext.prototype.shouldVisit = function shouldVisit(node) {
    var keys = t.VISITOR_KEYS[node.type];
    return !!(this.opts.enter || this.opts.exit || this.opts[node.type] || keys && keys.length);
  };

  TraversalContext.prototype.create = function create(node, obj, key) {
    var path = _path2["default"].get(this.parentPath, node, obj, key);
    path.unshiftContext(this);
    return path;
  };

  TraversalContext.prototype.visitMultiple = function visitMultiple(nodes, node, key) {
    // nothing to traverse!
    if (nodes.length === 0) return false;

    var visited = [];

    var queue = this.queue = [];
    var stop = false;

    // build up initial queue
    for (var i = 0; i < nodes.length; i++) {
      var self = nodes[i];
      if (self && this.shouldVisit(self)) {
        queue.push(this.create(node, nodes, i));
      }
    }

    // visit the queue
    var _arr = queue;
    for (var _i = 0; _i < _arr.length; _i++) {
      var path = _arr[_i];
      path.update();

      if (visited.indexOf(path.node) >= 0) continue;
      visited.push(path.node);

      if (path.visit()) {
        stop = true;
        break;
      }
    }

    var _arr2 = queue;
    for (var _i2 = 0; _i2 < _arr2.length; _i2++) {
      var path = _arr2[_i2];
      path.shiftContext();
    }

    this.queue = null;

    return stop;
  };

  TraversalContext.prototype.visitSingle = function visitSingle(node, key) {
    if (this.shouldVisit(node[key])) {
      var path = this.create(node, node, key);
      path.visit();
      path.shiftContext();
    }
  };

  TraversalContext.prototype.visit = function visit(node, key) {
    var nodes = node[key];
    if (!nodes) return;

    if (Array.isArray(nodes)) {
      return this.visitMultiple(nodes, node, key);
    } else {
      return this.visitSingle(node, key);
    }
  };

  return TraversalContext;
})();

exports["default"] = TraversalContext;
module.exports = exports["default"];
},{"../types":169,"./path":161,"lodash/array/compact":324}],157:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports["default"] = traverse;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _context = require("./context");

var _context2 = _interopRequireDefault(_context);

var _visitors = require("./visitors");

var visitors = _interopRequireWildcard(_visitors);

var _messages = require("../messages");

var messages = _interopRequireWildcard(_messages);

var _lodashCollectionIncludes = require("lodash/collection/includes");

var _lodashCollectionIncludes2 = _interopRequireDefault(_lodashCollectionIncludes);

var _types = require("../types");

var t = _interopRequireWildcard(_types);

function traverse(parent, opts, scope, state, parentPath) {
  if (!parent) return;

  if (!opts.noScope && !scope) {
    if (parent.type !== "Program" && parent.type !== "File") {
      throw new Error(messages.get("traverseNeedsParent", parent.type));
    }
  }

  if (!opts) opts = {};

  visitors.verify(opts);
  visitors.explode(opts);

  // array of nodes
  if (Array.isArray(parent)) {
    for (var i = 0; i < parent.length; i++) {
      traverse.node(parent[i], opts, scope, state, parentPath);
    }
  } else {
    traverse.node(parent, opts, scope, state, parentPath);
  }
}

traverse.visitors = visitors;
traverse.verify = visitors.verify;
traverse.explode = visitors.explode;

traverse.node = function (node, opts, scope, state, parentPath) {
  var keys = t.VISITOR_KEYS[node.type];
  if (!keys) return;

  var context = new _context2["default"](scope, opts, state, parentPath);
  for (var i = 0; i < keys.length; i++) {
    if (context.visit(node, keys[i])) {
      return;
    }
  }
};

var CLEAR_KEYS = ["trailingComments", "leadingComments", "extendedRange", "_scopeInfo", "_paths", "tokens", "range", "start", "end", "loc", "raw"];

function clearNode(node) {
  for (var i = 0; i < CLEAR_KEYS.length; i++) {
    var key = CLEAR_KEYS[i];
    if (node[key] != null) node[key] = null;
  }

  for (var key in node) {
    var val = node[key];
    if (Array.isArray(val)) {
      delete val._paths;
    }
  }
}

var clearVisitor = {
  noScope: true,
  exit: clearNode
};

function clearComments(comments) {
  for (var i = 0; i < comments.length; i++) {
    clearNode(comments[i]);
  }
}

traverse.removeProperties = function (tree) {
  traverse(tree, clearVisitor);
  clearNode(tree);

  return tree;
};

function hasBlacklistedType(node, parent, scope, state) {
  if (node.type === state.type) {
    state.has = true;
    this.skip();
  }
}

traverse.hasType = function (tree, scope, type, blacklistTypes) {
  // the node we're searching in is blacklisted
  if ((0, _lodashCollectionIncludes2["default"])(blacklistTypes, tree.type)) return false;

  // the type we're looking for is the same as the passed node
  if (tree.type === type) return true;

  var state = {
    has: false,
    type: type
  };

  traverse(tree, {
    blacklist: blacklistTypes,
    enter: hasBlacklistedType
  }, scope, state);

  return state.has;
};
module.exports = exports["default"];
},{"../messages":47,"../types":169,"./context":156,"./visitors":165,"lodash/collection/includes":332}],158:[function(require,module,exports){
"use strict";

exports.__esModule = true;

/**
 * Description
 */

exports.toComputedKey = toComputedKey;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _types = require("../../types");

var t = _interopRequireWildcard(_types);

function toComputedKey() {
  var node = this.node;

  var key;
  if (this.isMemberExpression()) {
    key = node.property;
  } else if (this.isProperty()) {
    key = node.key;
  } else {
    throw new ReferenceError("todo");
  }

  if (!node.computed) {
    if (t.isIdentifier(key)) key = t.literal(key.name);
  }

  return key;
}
},{"../../types":169}],159:[function(require,module,exports){
"use strict";

exports.__esModule = true;
/**
 * Walk the input `node` and statically evaluate if it's truthy.
 *
 * Returning `true` when we're sure that the expression will evaluate to a
 * truthy value, `false` if we're sure that it will evaluate to a falsy
 * value and `undefined` if we aren't sure. Because of this please do not
 * rely on coercion when using this method and check with === if it's false.
 *
 * For example do:
 *
 *   if (t.evaluateTruthy(node) === false) falsyLogic();
 *
 * **AND NOT**
 *
 *   if (!t.evaluateTruthy(node)) falsyLogic();
 *
 */

exports.evaluateTruthy = evaluateTruthy;

/**
 * Walk the input `node` and statically evaluate it.
 *
 * Returns an object in the form `{ confident, value }`. `confident` indicates
 * whether or not we had to drop out of evaluating the expression because of
 * hitting an unknown node that we couldn't confidently find the value of.
 *
 * Example:
 *
 *   t.evaluate(parse("5 + 5")) // { confident: true, value: 10 }
 *   t.evaluate(parse("!true")) // { confident: true, value: false }
 *   t.evaluate(parse("foo + foo")) // { confident: false, value: undefined }
 *
 */

exports.evaluate = evaluate;

function evaluateTruthy() {
  var res = this.evaluate();
  if (res.confident) return !!res.value;
}

function evaluate() {
  var confident = true;

  var value = evaluate(this);
  if (!confident) value = undefined;
  return {
    confident: confident,
    value: value
  };

  function evaluate(path) {
    if (!confident) return;

    var node = path.node;

    if (path.isSequenceExpression()) {
      var exprs = path.get("expressions");
      return evaluate(exprs[exprs.length - 1]);
    }

    if (path.isLiteral()) {
      if (node.regex) {} else {
        return node.value;
      }
    }

    if (path.isConditionalExpression()) {
      if (evaluate(path.get("test"))) {
        return evaluate(path.get("consequent"));
      } else {
        return evaluate(path.get("alternate"));
      }
    }

    if (path.isIdentifier({ name: "undefined" })) {
      return undefined;
    }

    if (path.isIdentifier() || path.isMemberExpression()) {
      path = path.resolve();
      if (path) {
        return evaluate(path);
      } else {
        return confident = false;
      }
    }

    if (path.isUnaryExpression({ prefix: true })) {
      var arg = evaluate(path.get("argument"));
      switch (node.operator) {
        case "void":
          return undefined;
        case "!":
          return !arg;
        case "+":
          return +arg;
        case "-":
          return -arg;
        case "~":
          return ~arg;
      }
    }

    if (path.isArrayExpression() || path.isObjectExpression()) {}

    if (path.isLogicalExpression()) {
      var left = evaluate(path.get("left"));
      var right = evaluate(path.get("right"));

      switch (node.operator) {
        case "||":
          return left || right;
        case "&&":
          return left && right;
      }
    }

    if (path.isBinaryExpression()) {
      var left = evaluate(path.get("left"));
      var right = evaluate(path.get("right"));

      switch (node.operator) {
        case "-":
          return left - right;
        case "+":
          return left + right;
        case "/":
          return left / right;
        case "*":
          return left * right;
        case "%":
          return left % right;
        case "**":
          return Math.pow(left, right);
        case "<":
          return left < right;
        case ">":
          return left > right;
        case "<=":
          return left <= right;
        case ">=":
          return left >= right;
        case "==":
          return left == right;
        case "!=":
          return left != right;
        case "===":
          return left === right;
        case "!==":
          return left !== right;
      }
    }

    confident = false;
  }
}

// we have a regex and we can't represent it natively

// we could evaluate these but it's probably impractical and not very useful
},{}],160:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var _transformationHelpersReact = require("../../transformation/helpers/react");

var react = _interopRequireWildcard(_transformationHelpersReact);

var _types = require("../../types");

var t = _interopRequireWildcard(_types);

var referenceVisitor = {
  ReferencedIdentifier: function ReferencedIdentifier(node, parent, scope, state) {
    if (this.isJSXIdentifier() && react.isCompatTag(node.name)) {
      return;
    }

    // direct references that we need to track to hoist this to the highest scope we can
    var bindingInfo = scope.getBinding(node.name);
    if (!bindingInfo) return;

    // this binding isn't accessible from the parent scope so we can safely ignore it
    // eg. it's in a closure etc
    if (bindingInfo !== state.scope.getBinding(node.name)) return;

    if (bindingInfo.constant) {
      state.bindings[node.name] = bindingInfo;
    } else {
      var _arr = bindingInfo.constantViolations;

      for (var _i = 0; _i < _arr.length; _i++) {
        var violationPath = _arr[_i];
        state.breakOnScopePaths.push(violationPath.scope.path);
      }
    }
  }
};

var PathHoister = (function () {
  function PathHoister(path, scope) {
    _classCallCheck(this, PathHoister);

    this.breakOnScopePaths = [];
    this.bindings = {};
    this.scopes = [];
    this.scope = scope;
    this.path = path;
  }

  PathHoister.prototype.isCompatibleScope = function isCompatibleScope(scope) {
    for (var key in this.bindings) {
      var binding = this.bindings[key];
      if (!scope.bindingIdentifierEquals(key, binding.identifier)) {
        return false;
      }
    }

    return true;
  };

  PathHoister.prototype.getCompatibleScopes = function getCompatibleScopes() {
    var scope = this.path.scope;
    do {
      if (this.isCompatibleScope(scope)) {
        this.scopes.push(scope);
      } else {
        break;
      }

      if (this.breakOnScopePaths.indexOf(scope.path) >= 0) {
        break;
      }
    } while (scope = scope.parent);
  };

  PathHoister.prototype.getAttachmentPath = function getAttachmentPath() {
    var scopes = this.scopes;

    var scope = scopes.pop();
    if (!scope) return;

    if (scope.path.isFunction()) {
      if (this.hasOwnParamBindings(scope)) {
        // should ignore this scope since it's ourselves
        if (this.scope.is(scope)) return;

        // needs to be attached to the body
        return scope.path.get("body").get("body")[0];
      } else {
        // doesn't need to be be attached to this scope
        return this.getNextScopeStatementParent();
      }
    } else if (scope.path.isProgram()) {
      return this.getNextScopeStatementParent();
    }
  };

  PathHoister.prototype.getNextScopeStatementParent = function getNextScopeStatementParent() {
    var scope = this.scopes.pop();
    if (scope) return scope.path.getStatementParent();
  };

  PathHoister.prototype.hasOwnParamBindings = function hasOwnParamBindings(scope) {
    for (var name in this.bindings) {
      if (!scope.hasOwnBinding(name)) continue;

      var binding = this.bindings[name];
      if (binding.kind === "param") return true;
    }
    return false;
  };

  PathHoister.prototype.run = function run() {
    var node = this.path.node;
    if (node._hoisted) return;
    node._hoisted = true;

    this.path.traverse(referenceVisitor, this);

    this.getCompatibleScopes();

    var path = this.getAttachmentPath();
    if (!path) return;

    var uid = path.scope.generateUidIdentifier("ref");

    path.insertBefore([t.variableDeclaration("var", [t.variableDeclarator(uid, this.path.node)])]);

    var parent = this.path.parentPath;

    if (parent.isJSXElement() && this.path.container === parent.node.children) {
      // turning the `span` in `<div><span /></div>` to an expression so we need to wrap it with
      // an expression container
      uid = t.jSXExpressionContainer(uid);
    }

    this.path.replaceWith(uid);
  };

  return PathHoister;
})();

exports["default"] = PathHoister;
module.exports = exports["default"];
},{"../../transformation/helpers/react":66,"../../types":169}],161:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var _hoister = require("./hoister");

var _hoister2 = _interopRequireDefault(_hoister);

var _virtualTypes = require("./virtual-types");

var virtualTypes = _interopRequireWildcard(_virtualTypes);

var _messages = require("../../messages");

var messages = _interopRequireWildcard(_messages);

var _lodashLangIsBoolean = require("lodash/lang/isBoolean");

var _lodashLangIsBoolean2 = _interopRequireDefault(_lodashLangIsBoolean);

var _lodashLangIsNumber = require("lodash/lang/isNumber");

var _lodashLangIsNumber2 = _interopRequireDefault(_lodashLangIsNumber);

var _lodashLangIsRegExp = require("lodash/lang/isRegExp");

var _lodashLangIsRegExp2 = _interopRequireDefault(_lodashLangIsRegExp);

var _lodashLangIsString = require("lodash/lang/isString");

var _lodashLangIsString2 = _interopRequireDefault(_lodashLangIsString);

var _helpersCodeFrame = require("../../helpers/code-frame");

var _helpersCodeFrame2 = _interopRequireDefault(_helpersCodeFrame);

var _helpersParse = require("../../helpers/parse");

var _helpersParse2 = _interopRequireDefault(_helpersParse);

var _visitors = require("../visitors");

var _index = require("../index");

var _index2 = _interopRequireDefault(_index);

var _lodashCollectionIncludes = require("lodash/collection/includes");

var _lodashCollectionIncludes2 = _interopRequireDefault(_lodashCollectionIncludes);

var _lodashObjectAssign = require("lodash/object/assign");

var _lodashObjectAssign2 = _interopRequireDefault(_lodashObjectAssign);

var _lodashObjectExtend = require("lodash/object/extend");

var _lodashObjectExtend2 = _interopRequireDefault(_lodashObjectExtend);

var _scope = require("../scope");

var _scope2 = _interopRequireDefault(_scope);

var _types = require("../../types");

var t = _interopRequireWildcard(_types);

var hoistVariablesVisitor = (0, _visitors.explode)({
  Function: function Function() {
    this.skip();
  },

  VariableDeclaration: function VariableDeclaration(node, parent, scope) {
    if (node.kind !== "var") return;

    var bindings = this.getBindingIdentifiers();
    for (var key in bindings) {
      scope.push({ id: bindings[key] });
    }

    var exprs = [];

    var _arr = node.declarations;
    for (var _i = 0; _i < _arr.length; _i++) {
      var declar = _arr[_i];
      var declar = node.declarations[i];
      if (declar.init) {
        exprs.push(t.expressionStatement(t.assignmentExpression("=", declar.id, declar.init)));
      }
    }

    return exprs;
  }
});

var TraversalPath = (function () {
  function TraversalPath(parent, container) {
    _classCallCheck(this, TraversalPath);

    this.container = container;
    this.contexts = [];
    this.parent = parent;
    this.data = {};
  }

  /**
   * Description
   */

  TraversalPath.get = function get(parentPath, parent, container, key) {
    var targetNode = container[key];
    var paths = container._paths = container._paths || [];
    var path;

    for (var i = 0; i < paths.length; i++) {
      var pathCheck = paths[i];
      if (pathCheck.node === targetNode) {
        path = pathCheck;
        break;
      }
    }

    if (!path) {
      path = new TraversalPath(parent, container);
      paths.push(path);
    }

    path.setup(parentPath, key);

    return path;
  };

  /**
   * Description
   */

  TraversalPath.getScope = function getScope(path, scope, file) {
    var ourScope = scope;

    // we're entering a new scope so let's construct it!
    if (path.isScope()) {
      ourScope = new _scope2["default"](path, scope, file);
    }

    return ourScope;
  };

  /**
   * Description
   */

  TraversalPath.prototype.getAncestry = function getAncestry() {
    var ancestry = [];

    var path = this.parentPath;
    while (path) {
      ancestry.push(path.node);
      path = path.parentPath;
    }

    return ancestry;
  };

  /**
   * Description
   */

  TraversalPath.prototype.inType = function inType(types) {
    if (!Array.isArray(types)) types = [types];

    var path = this;
    while (path) {
      var _arr3 = types;

      for (var _i3 = 0; _i3 < _arr3.length; _i3++) {
        var type = _arr3[_i3];
        if (path.node.type === type) return true;
      }
      path = path.parentPath;
    }

    return false;
  };

  /**
   * Description
   */

  TraversalPath.prototype.inShadow = function inShadow() {
    var path = this;
    while (path) {
      if (path.isFunction()) {
        if (path.node.shadow) {
          return path;
        } else {
          return null;
        }
      }
      path = path.parentPath;
    }
    return null;
  };

  /**
   * Check whether this node was a part of the original AST.
   */

  TraversalPath.prototype.isUser = function isUser() {
    return this.node && !!this.node.loc;
  };

  /**
   * Check whether this node was generated by us and not a part of the original AST.
   */

  TraversalPath.prototype.isGenerated = function isGenerated() {
    return !this.isUser();
  };

  /**
   * Description
   */

  TraversalPath.prototype.findParent = function findParent(callback) {
    var path = this;
    while (path) {
      if (callback(path.node, path)) return path;
      path = path.parentPath;
    }
    return null;
  };

  /**
   * Description
   */

  TraversalPath.prototype.queueNode = function queueNode(path) {
    var _arr4 = this.contexts;

    for (var _i4 = 0; _i4 < _arr4.length; _i4++) {
      var context = _arr4[_i4];
      if (context.queue) {
        context.queue.push(path);
      }
    }
  };

  /**
   * Description
   */

  TraversalPath.prototype.insertBefore = function insertBefore(nodes) {
    nodes = this._verifyNodeList(nodes);

    if (this.parentPath.isExpressionStatement() || this.parentPath.isLabeledStatement()) {
      return this.parentPath.insertBefore(nodes);
    } else if (this.isPreviousType("Expression") || this.parentPath.isForStatement() && this.key === "init") {
      if (this.node) nodes.push(this.node);
      this.replaceExpressionWithStatements(nodes);
    } else if (this.isPreviousType("Statement") || !this.type) {
      this._maybePopFromStatements(nodes);
      if (Array.isArray(this.container)) {
        this._containerInsertBefore(nodes);
      } else if (this.isStatementOrBlock()) {
        if (this.node) nodes.push(this.node);
        this.node = this.container[this.key] = t.blockStatement(nodes);
      } else {
        throw new Error("We don't know what to do with this node type. We were previously a Statement but we can't fit in here?");
      }
    } else {
      throw new Error("No clue what to do with this node type.");
    }
  };

  TraversalPath.prototype._containerInsert = function _containerInsert(from, nodes) {
    this.updateSiblingKeys(from, nodes.length);

    var paths = [];

    for (var i = 0; i < nodes.length; i++) {
      var to = from + i;
      var node = nodes[i];
      this.container.splice(to, 0, node);

      if (this.context) {
        var path = this.context.create(this.parent, this.container, to);
        paths.push(path);
        this.queueNode(path);
      } else {
        paths.push(TraversalPath.get(this, node, this.container, to));
      }
    }

    return paths;
  };

  TraversalPath.prototype._containerInsertBefore = function _containerInsertBefore(nodes) {
    return this._containerInsert(this.key, nodes);
  };

  TraversalPath.prototype._containerInsertAfter = function _containerInsertAfter(nodes) {
    return this._containerInsert(this.key + 1, nodes);
  };

  TraversalPath.prototype._maybePopFromStatements = function _maybePopFromStatements(nodes) {
    var last = nodes[nodes.length - 1];
    if (t.isExpressionStatement(last) && t.isIdentifier(last.expression) && !this.isCompletionRecord()) {
      nodes.pop();
    }
  };

  /**
   * Description
   */

  TraversalPath.prototype.isCompletionRecord = function isCompletionRecord() {
    var path = this;

    do {
      var container = path.container;
      if (Array.isArray(container) && path.key !== container.length - 1) {
        return false;
      }
    } while (path = path.parentPath && !path.isProgram());

    return true;
  };

  /**
   * Description
   */

  TraversalPath.prototype.isStatementOrBlock = function isStatementOrBlock() {
    if (t.isLabeledStatement(this.parent) || t.isBlockStatement(this.container)) {
      return false;
    } else {
      return (0, _lodashCollectionIncludes2["default"])(t.STATEMENT_OR_BLOCK_KEYS, this.key);
    }
  };

  /**
   * Description
   */

  TraversalPath.prototype.insertAfter = function insertAfter(nodes) {
    nodes = this._verifyNodeList(nodes);

    if (this.parentPath.isExpressionStatement() || this.parentPath.isLabeledStatement()) {
      return this.parentPath.insertAfter(nodes);
    } else if (this.isPreviousType("Expression") || this.parentPath.isForStatement() && this.key === "init") {
      if (this.node) {
        var temp = this.scope.generateDeclaredUidIdentifier();
        nodes.unshift(t.expressionStatement(t.assignmentExpression("=", temp, this.node)));
        nodes.push(t.expressionStatement(temp));
      }
      this.replaceExpressionWithStatements(nodes);
    } else if (this.isPreviousType("Statement") || !this.type) {
      this._maybePopFromStatements(nodes);
      if (Array.isArray(this.container)) {
        this._containerInsertAfter(nodes);
      } else if (this.isStatementOrBlock()) {
        if (this.node) nodes.unshift(this.node);
        this.node = this.container[this.key] = t.blockStatement(nodes);
      } else {
        throw new Error("We don't know what to do with this node type. We were previously a Statement but we can't fit in here?");
      }
    } else {
      throw new Error("No clue what to do with this node type.");
    }
  };

  /**
   * Description
   */

  TraversalPath.prototype.updateSiblingKeys = function updateSiblingKeys(fromIndex, incrementBy) {
    var paths = this.container._paths;
    for (var i = 0; i < paths.length; i++) {
      var path = paths[i];
      if (path.key >= fromIndex) {
        path.key += incrementBy;
      }
    }
  };

  /**
   * Description
   */

  TraversalPath.prototype.setData = function setData(key, val) {
    return this.data[key] = val;
  };

  /**
   * Description
   */

  TraversalPath.prototype.getData = function getData(key, def) {
    var val = this.data[key];
    if (!val && def) val = this.data[key] = def;
    return val;
  };

  /**
   * Description
   */

  TraversalPath.prototype.setScope = function setScope(file) {
    if (this.opts && this.opts.noScope) return;

    var target = this.context || this.parentPath;
    this.scope = TraversalPath.getScope(this, target && target.scope, file);
  };

  /**
   * Description
   */

  TraversalPath.prototype.setContext = function setContext(context, file) {
    this.shouldSkip = false;
    this.shouldStop = false;
    this.removed = false;

    if (context) {
      this.context = context;
      this.state = context.state;
      this.opts = context.opts;
    }

    var log = file && this.type === "Program";
    if (log) file.log.debug("Start scope building");
    this.setScope(file);
    if (log) file.log.debug("End scope building");

    return this;
  };

  /**
   * Description
   */

  TraversalPath.prototype.update = function update() {
    if (this.node === this.container[this.key]) return;

    // grrr, path key is out of sync. this is likely due to a modification to the AST
    // not through our path APIs

    if (Array.isArray(this.container)) {
      for (var i = 0; i < this.container.length; i++) {
        if (this.container[i] === this.node) {
          return this.setKey(i);
        }
      }
    } else {
      for (var key in this.container) {
        if (this.container[key] === this.node) {
          return this.setKey(key);
        }
      }
    }

    throw new Error(messages.get("lostTrackNodePath"));
  };

  /**
   * Description
   */

  TraversalPath.prototype.shiftContext = function shiftContext() {
    this.contexts.shift();
    this.setContext(this.contexts[0]);
  };

  /**
   * Description
   */

  TraversalPath.prototype.unshiftContext = function unshiftContext(context) {
    this.contexts.unshift(context);
    this.setContext(context);
  };

  /**
   * Description
   */

  TraversalPath.prototype.setup = function setup(parentPath, key) {
    this.parentPath = parentPath || this.parentPath;
    this.setKey(key);
  };

  /**
   * Description
   */

  TraversalPath.prototype.setKey = function setKey(key) {
    this.key = key;
    this.node = this.container[this.key];
    this.type = this.node && this.node.type;
  };

  /**
   * Share comments amongst siblings.
   */

  TraversalPath.prototype.shareCommentsWithSiblings = function shareCommentsWithSiblings() {
    var node = this.node;
    if (!node) return;

    var trailing = node.trailingComments;
    var leading = node.leadingComments;
    if (!trailing && !leading) return;

    var prev = this.getSibling(this.key - 1);
    var next = this.getSibling(this.key + 1);

    if (!prev.node) prev = next;
    if (!next.node) next = prev;

    prev.giveComments("trailing", leading);
    next.giveComments("leading", trailing);
  };

  /**
   * Give node `comments` of the specified `type`.
   */

  TraversalPath.prototype.giveComments = function giveComments(type, comments) {
    if (!comments) return;

    var node = this.node;
    if (!node) return;

    var key = "" + type + "Comments";

    if (node[key]) {
      node[key] = node[key].concat(comments);
    } else {
      node[key] = comments;
    }
  };

  /**
   * Description
   */

  TraversalPath.prototype.remove = function remove() {
    this.shareCommentsWithSiblings();
    this._remove();
    this.removed = true;

    var parentPath = this.parentPath;
    var parent = this.parent;
    if (!parentPath) return;

    // we've just removed the last declarator of a variable declaration so there's no point in
    // keeping it
    if (parentPath.isVariableDeclaration() && parent.declarations.length === 0) {
      return parentPath.remove();
    }

    // we're the child of an expression statement so we should remove the parent
    if (parentPath.isExpressionStatement()) {
      return parentPath.remove();
    }

    // we've just removed the second element of a sequence expression so let's turn that sequence
    // expression into a regular expression
    if (parentPath.isSequenceExpression() && parent.expressions.length === 1) {
      parentPath.replaceWith(parent.expressions[0]);
    }

    // we're in a binary expression, better remove it and replace it with the last expression
    if (parentPath.isBinary()) {
      if (this.key === "left") {
        parentPath.replaceWith(parent.right);
      } else {
        // key === "right"
        parentPath.replaceWith(parent.left);
      }
    }
  };

  TraversalPath.prototype._remove = function _remove() {
    if (Array.isArray(this.container)) {
      this.container.splice(this.key, 1);
      this.updateSiblingKeys(this.key, -1);
    } else {
      this.container[this.key] = null;
    }
    this.node = null;
  };

  /**
   * Description
   */

  TraversalPath.prototype.skip = function skip() {
    this.shouldSkip = true;
  };

  /**
   * Description
   */

  TraversalPath.prototype.stop = function stop() {
    this.shouldStop = true;
    this.shouldSkip = true;
  };

  /**
   * Description
   */

  TraversalPath.prototype.errorWithNode = function errorWithNode(msg) {
    var Error = arguments[1] === undefined ? SyntaxError : arguments[1];

    var loc = this.node.loc.start;
    var err = new Error("Line " + loc.line + ": " + msg);
    err.loc = loc;
    return err;
  };

  /**
   * Description
   */

  TraversalPath.prototype.replaceInline = function replaceInline(nodes) {
    if (Array.isArray(nodes)) {
      if (Array.isArray(this.container)) {
        nodes = this._verifyNodeList(nodes);
        this._containerInsertAfter(nodes);
        return this.remove();
      } else {
        return this.replaceWithMultiple(nodes);
      }
    } else {
      return this.replaceWith(nodes);
    }
  };

  /**
   * Description
   */

  TraversalPath.prototype._verifyNodeList = function _verifyNodeList(nodes) {
    if (nodes.constructor !== Array) {
      nodes = [nodes];
    }

    for (var i = 0; i < nodes.length; i++) {
      var node = nodes[i];
      if (!node) {
        throw new Error("Node list has falsy node with the index of " + i);
      } else if (typeof node !== "object") {
        throw new Error("Node list contains a non-object node with the index of " + i);
      } else if (!node.type) {
        throw new Error("Node list contains a node without a type with the index of " + i);
      }
    }

    return nodes;
  };

  /**
   * Description
   */

  TraversalPath.prototype.unshiftContainer = function unshiftContainer(containerKey, nodes) {
    nodes = this._verifyNodeList(nodes);

    // get the first path and insert our nodes before it, if it doesn't exist then it
    // doesn't matter, our nodes will be inserted anyway

    var container = this.node[containerKey];
    var path = TraversalPath.get(this, this.node, container, 0);

    return path.insertBefore(nodes);
  };

  /**
   * Description
   */

  TraversalPath.prototype.pushContainer = function pushContainer(containerKey, nodes) {
    nodes = this._verifyNodeList(nodes);

    // get an invisible path that represents the last node + 1 and replace it with our
    // nodes, effectively inlining it

    var container = this.node[containerKey];
    var i = container.length;
    var path = TraversalPath.get(this, this.node, container, i);

    return path.replaceWith(nodes, true);
  };

  /**
   * Description
   */

  TraversalPath.prototype.replaceWithMultiple = function replaceWithMultiple(nodes) {
    nodes = this._verifyNodeList(nodes);
    t.inheritsComments(nodes[0], this.node);
    this.node = this.container[this.key] = null;
    this.insertAfter(nodes);
    if (!this.node) this.remove();
  };

  /**
   * Description
   */

  TraversalPath.prototype.replaceWithSourceString = function replaceWithSourceString(replacement) {
    try {
      replacement = "(" + replacement + ")";
      replacement = (0, _helpersParse2["default"])(replacement);
    } catch (err) {
      var loc = err.loc;
      if (loc) {
        err.message += " - make sure this is an expression.";
        err.message += "\n" + (0, _helpersCodeFrame2["default"])(replacement, loc.line, loc.column + 1);
      }
      throw err;
    }

    replacement = replacement.program.body[0].expression;
    _index2["default"].removeProperties(replacement);
    return this.replaceWith(replacement);
  };

  /**
   * Description
   */

  TraversalPath.prototype.replaceWith = function replaceWith(replacement, whateverAllowed) {
    if (this.removed) {
      throw new Error("You can't replace this node, we've already removed it");
    }

    if (!replacement) {
      throw new Error("You passed `path.replaceWith()` a falsy node, use `path.remove()` instead");
    }

    if (this.node === replacement) {
      return;
    }

    // normalise inserting an entire AST
    if (t.isProgram(replacement)) {
      replacement = replacement.body;
      whateverAllowed = true;
    }

    if (Array.isArray(replacement)) {
      if (whateverAllowed) {
        return this.replaceWithMultiple(replacement);
      } else {
        throw new Error("Don't use `path.replaceWith()` with an array of nodes, use `path.replaceWithMultiple()`");
      }
    }

    if (typeof replacement === "string") {
      if (whateverAllowed) {
        return this.replaceWithSourceString(replacement);
      } else {
        throw new Error("Don't use `path.replaceWith()` with a string, use `path.replaceWithSourceString()`");
      }
    }

    // replacing a statement with an expression so wrap it in an expression statement
    if (this.isPreviousType("Statement") && t.isExpression(replacement)) {
      replacement = t.expressionStatement(replacement);
    }

    // replacing an expression with a statement so let's explode it
    if (this.isPreviousType("Expression") && t.isStatement(replacement)) {
      return this.replaceExpressionWithStatements([replacement]);
    }

    var oldNode = this.node;
    if (oldNode) t.inheritsComments(replacement, oldNode);

    // replace the node
    this.node = this.container[this.key] = replacement;
    this.type = replacement.type;

    // potentially create new scope
    this.setScope();
  };

  /**
   * Description
   */

  TraversalPath.prototype.getStatementParent = function getStatementParent() {
    var path = this;

    do {
      if (!path.parentPath || Array.isArray(path.container) && path.isStatement()) {
        break;
      } else {
        path = path.parentPath;
      }
    } while (path);

    if (path && (path.isProgram() || path.isFile())) {
      throw new Error("File/Program node, we can't possibly find a statement parent to this");
    }

    return path;
  };

  /**
   * Description
   */

  TraversalPath.prototype.getLastStatements = function getLastStatements() {
    var paths = [];

    var add = function add(path) {
      if (path) paths = paths.concat(path.getLastStatements());
    };

    if (this.isIfStatement()) {
      add(this.get("consequent"));
      add(this.get("alternate"));
    } else if (this.isDoExpression()) {
      add(this.get("body"));
    } else if (this.isProgram() || this.isBlockStatement()) {
      add(this.get("body").pop());
    } else {
      paths.push(this);
    }

    return paths;
  };

  /**
   * Description
   */

  TraversalPath.prototype.replaceExpressionWithStatements = function replaceExpressionWithStatements(nodes) {
    var toSequenceExpression = t.toSequenceExpression(nodes, this.scope);

    if (toSequenceExpression) {
      return this.replaceWith(toSequenceExpression);
    } else {
      var container = t.functionExpression(null, [], t.blockStatement(nodes));
      container.shadow = true;

      // add implicit returns to all ending expression statements
      var last = this.getLastStatements();
      for (var i = 0; i < last.length; i++) {
        var lastNode = last[i];
        if (lastNode.isExpressionStatement()) {
          lastNode.replaceWith(t.returnStatement(lastNode.node.expression));
        }
      }

      this.replaceWith(t.callExpression(container, []));

      this.traverse(hoistVariablesVisitor);

      return this.node;
    }
  };

  /**
   * Description
   */

  TraversalPath.prototype.call = function call(key) {
    var node = this.node;
    if (!node) return;

    var opts = this.opts;
    if (!opts[key] && !opts[node.type]) return;

    var fns = [].concat(opts[key]);
    if (opts[node.type]) fns = fns.concat(opts[node.type][key]);

    var _arr5 = fns;
    for (var _i5 = 0; _i5 < _arr5.length; _i5++) {
      var fn = _arr5[_i5];
      if (!fn) continue;

      var node = this.node;
      if (!node) return;

      var previousType = this.type;

      // call the function with the params (node, parent, scope, state)
      var replacement = fn.call(this, node, this.parent, this.scope, this.state);

      if (replacement) {
        this.replaceWith(replacement, true);
      }

      if (this.shouldStop || this.shouldSkip || this.removed) return;

      if (previousType !== this.type) {
        this.queueNode(this);
        return;
      }
    }
  };

  /**
   * Description
   */

  TraversalPath.prototype.isBlacklisted = function isBlacklisted() {
    var blacklist = this.opts.blacklist;
    return blacklist && blacklist.indexOf(this.node.type) > -1;
  };

  /**
   * Description
   */

  TraversalPath.prototype.visit = function visit() {
    if (this.isBlacklisted()) return false;
    if (this.opts.shouldSkip && this.opts.shouldSkip(this)) return false;

    this.call("enter");

    if (this.shouldSkip) {
      return this.shouldStop;
    }

    var node = this.node;
    var opts = this.opts;

    if (node) {
      if (Array.isArray(node)) {
        // traverse over these replacement nodes we purposely don't call exitNode
        // as the original node has been destroyed
        for (var i = 0; i < node.length; i++) {
          _index2["default"].node(node[i], opts, this.scope, this.state, this);
        }
      } else {
        _index2["default"].node(node, opts, this.scope, this.state, this);
        this.call("exit");
      }
    }

    return this.shouldStop;
  };

  /**
   * Description
   */

  TraversalPath.prototype.getSibling = function getSibling(key) {
    return TraversalPath.get(this.parentPath, this.parent, this.container, key, this.file);
  };

  /**
   * Description
   */

  TraversalPath.prototype.get = function get(key) {
    var parts = key.split(".");
    if (parts.length === 1) {
      // "foo"
      return this._getKey(key);
    } else {
      // "foo.bar"
      return this._getPattern(parts);
    }
  };

  /**
   * Description
   */

  TraversalPath.prototype._getKey = function _getKey(key) {
    var _this = this;

    var node = this.node;
    var container = node[key];

    if (Array.isArray(container)) {
      // requested a container so give them all the paths
      return container.map(function (_, i) {
        return TraversalPath.get(_this, node, container, i).setContext();
      });
    } else {
      return TraversalPath.get(this, node, node, key).setContext();
    }
  };

  /**
   * Description
   */

  TraversalPath.prototype._getPattern = function _getPattern(parts) {
    var path = this;
    var _arr6 = parts;
    for (var _i6 = 0; _i6 < _arr6.length; _i6++) {
      var part = _arr6[_i6];
      if (part === ".") {
        path = path.parentPath;
      } else {
        if (Array.isArray(path)) {
          path = path[part];
        } else {
          path = path.get(part);
        }
      }
    }
    return path;
  };

  /**
   * Description
   */

  TraversalPath.prototype.has = function has(key) {
    var val = this.node[key];
    if (val && Array.isArray(val)) {
      return !!val.length;
    } else {
      return !!val;
    }
  };

  /**
   * Description
   */

  TraversalPath.prototype.is = function is(key) {
    return this.has(key);
  };

  /**
   * Description
   */

  TraversalPath.prototype.isnt = function isnt(key) {
    return !this.has(key);
  };

  /**
   * Description
   */

  TraversalPath.prototype.equals = function equals(key, value) {
    return this.node[key] === value;
  };

  /**
   * Description
   */

  TraversalPath.prototype.getTypeAnnotation = function getTypeAnnotation() {
    if (this.typeInfo) {
      return this.typeInfo;
    }

    var info = this.typeInfo = {
      inferred: false,
      annotation: null
    };

    var type = this.node && this.node.typeAnnotation;

    if (!type) {
      info.inferred = true;
      type = this.inferType(this);
    }

    if (type) {
      if (t.isTypeAnnotation(type)) type = type.typeAnnotation;
      info.annotation = type;
    }

    return info;
  };

  /**
   * Description
   */

  TraversalPath.prototype.resolve = function resolve() {
    if (this.isVariableDeclarator()) {
      if (this.get("id").isIdentifier()) {
        return this.get("init").resolve();
      } else {}
    } else if (this.isIdentifier()) {
      var binding = this.scope.getBinding(this.node.name);
      if (!binding || !binding.constant) return;

      // todo: take into consideration infinite recursion #1149
      return;

      if (binding.path === this) {
        return this;
      } else {
        return binding.path.resolve();
      }
    } else if (this.isMemberExpression()) {
      // this is dangerous, as non-direct target assignments will mutate it's state
      // making this resolution inaccurate

      var targetKey = this.toComputedKey();
      if (!t.isLiteral(targetKey)) return;
      var targetName = targetKey.value;

      var target = this.get("object").resolve();
      if (!target || !target.isObjectExpression()) return;

      var props = target.get("properties");
      for (var i = 0; i < props.length; i++) {
        var prop = props[i];
        if (!prop.isProperty()) continue;

        var key = prop.get("key");

        // { foo: obj }
        var match = prop.isnt("computed") && key.isIdentifier({ name: targetName });

        // { "foo": "obj" } or { ["foo"]: "obj" }
        match = match || key.isLiteral({ value: targetName });

        if (match) return prop.get("value");
      }
    } else {
      return this;
    }
  };

  /**
   * Description
   */

  TraversalPath.prototype.inferType = function inferType(path) {
    path = path.resolve();
    if (!path) return;

    if (path.isPreviousType("RestElement") || path.parentPath.isPreviousType("RestElement") || path.isPreviousType("ArrayExpression")) {
      return t.genericTypeAnnotation(t.identifier("Array"));
    }

    if (path.parentPath.isPreviousType("TypeCastExpression")) {
      return path.parentPath.node.typeAnnotation;
    }

    if (path.isPreviousType("TypeCastExpression")) {
      return path.node.typeAnnotation;
    }

    if (path.isPreviousType("ObjectExpression")) {
      return t.genericTypeAnnotation(t.identifier("Object"));
    }

    if (path.isPreviousType("Function")) {
      return t.identifier("Function");
    }

    if (path.isPreviousType("Literal")) {
      var value = path.node.value;
      if ((0, _lodashLangIsString2["default"])(value)) return t.stringTypeAnnotation();
      if ((0, _lodashLangIsNumber2["default"])(value)) return t.numberTypeAnnotation();
      if ((0, _lodashLangIsBoolean2["default"])(value)) return t.booleanTypeAnnotation();
    }

    if (path.isPreviousType("CallExpression")) {
      var callee = path.get("callee").resolve();
      if (callee && callee.isPreviousType("Function")) return callee.node.returnType;
    }
  };

  /**
   * Description
   */

  TraversalPath.prototype.isPreviousType = function isPreviousType(type) {
    return t.isType(this.type, type);
  };

  /**
   * Description
   */

  TraversalPath.prototype.isTypeGeneric = function isTypeGeneric(genericName) {
    var opts = arguments[1] === undefined ? {} : arguments[1];

    var typeInfo = this.getTypeAnnotation();
    var type = typeInfo.annotation;
    if (!type) return false;

    if (typeInfo.inferred && opts.inference === false) {
      return false;
    }

    if (!t.isGenericTypeAnnotation(type) || !t.isIdentifier(type.id, { name: genericName })) {
      return false;
    }

    if (opts.requireTypeParameters && !type.typeParameters) {
      return false;
    }

    return true;
  };

  /**
   * Description
   */

  TraversalPath.prototype.getBindingIdentifiers = function getBindingIdentifiers() {
    return t.getBindingIdentifiers(this.node);
  };

  /**
   * Description
   */

  TraversalPath.prototype.traverse = function traverse(visitor, state) {
    if (!this.scope) console.log(this.contexts);
    (0, _index2["default"])(this.node, visitor, this.scope, state, this);
  };

  /**
   * Description
   */

  TraversalPath.prototype.hoist = function hoist() {
    var scope = arguments[0] === undefined ? this.scope : arguments[0];

    var hoister = new _hoister2["default"](this, scope);
    return hoister.run();
  };

  /**
   * Match the current node if it matches the provided `pattern`.
   *
   * For example, given the match `React.createClass` it would match the
   * parsed nodes of `React.createClass` and `React["createClass"]`.
   */

  TraversalPath.prototype.matchesPattern = function matchesPattern(pattern, allowPartial) {
    var parts = pattern.split(".");

    // not a member expression
    if (!this.isMemberExpression()) return false;

    var search = [this.node];
    var i = 0;

    function matches(name) {
      var part = parts[i];
      return part === "*" || name === part;
    }

    while (search.length) {
      var node = search.shift();

      if (allowPartial && i === parts.length) {
        return true;
      }

      if (t.isIdentifier(node)) {
        // this part doesn't match
        if (!matches(node.name)) return false;
      } else if (t.isLiteral(node)) {
        // this part doesn't match
        if (!matches(node.value)) return false;
      } else if (t.isMemberExpression(node)) {
        if (node.computed && !t.isLiteral(node.property)) {
          // we can't deal with this
          return false;
        } else {
          search.push(node.object);
          search.push(node.property);
          continue;
        }
      } else {
        // we can't deal with this
        return false;
      }

      // too many parts
      if (++i > parts.length) {
        return false;
      }
    }

    return true;
  };

  return TraversalPath;
})();

exports["default"] = TraversalPath;

(0, _lodashObjectAssign2["default"])(TraversalPath.prototype, require("./evaluation"));
(0, _lodashObjectAssign2["default"])(TraversalPath.prototype, require("./conversion"));

var _loop = function (type) {
  if (type[0] === "_") return "continue";

  TraversalPath.prototype["is" + type] = function (opts) {
    return virtualTypes[type].checkPath(this, opts);
  };
};

for (var type in virtualTypes) {
  var _ret = _loop(type);

  if (_ret === "continue") continue;
}

var _arr2 = t.TYPES;

var _loop2 = function () {
  var type = _arr2[_i2];
  var typeKey = "is" + type;
  TraversalPath.prototype[typeKey] = function (opts) {
    return t[typeKey](this.node, opts);
  };
};

for (var _i2 = 0; _i2 < _arr2.length; _i2++) {
  _loop2();
}
module.exports = exports["default"];

// otherwise it's a request for a destructuring declarator and i'm not
// ready to resolve those just yet
},{"../../helpers/code-frame":42,"../../helpers/parse":46,"../../messages":47,"../../types":169,"../index":157,"../scope":164,"../visitors":165,"./conversion":158,"./evaluation":159,"./hoister":160,"./virtual-types":162,"lodash/collection/includes":332,"lodash/lang/isBoolean":406,"lodash/lang/isNumber":410,"lodash/lang/isRegExp":413,"lodash/lang/isString":414,"lodash/object/assign":417,"lodash/object/extend":419}],162:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _types = require("../../types");

var t = _interopRequireWildcard(_types);

var ReferencedIdentifier = {
  type: "Identifier",
  checkPath: function checkPath(path, opts) {
    return t.isReferencedIdentifier(path.node, path.parent, opts);
  }
};

exports.ReferencedIdentifier = ReferencedIdentifier;
var Scope = {
  type: "Scopable",
  checkPath: function checkPath(path) {
    return t.isScope(path.node, path.parent);
  }
};

exports.Scope = Scope;
var Referenced = {
  checkPath: function checkPath(path) {
    return t.isReferenced(path.node, path.parent);
  }
};

exports.Referenced = Referenced;
var BlockScoped = {
  checkPath: function checkPath(path) {
    return t.isBlockScoped(path.node);
  }
};

exports.BlockScoped = BlockScoped;
var Var = {
  type: "VariableDeclaration",
  checkPath: function checkPath(path) {
    return t.isVar(path.node);
  }
};
exports.Var = Var;
},{"../../types":169}],163:[function(require,module,exports){
"use strict";

exports.__esModule = true;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var _types = require("../../types");

var t = _interopRequireWildcard(_types);

var Binding = (function () {
  function Binding(_ref) {
    var identifier = _ref.identifier;
    var scope = _ref.scope;
    var path = _ref.path;
    var kind = _ref.kind;

    _classCallCheck(this, Binding);

    this.constantViolations = [];
    this.constant = true;

    this.identifier = identifier;
    this.references = 0;
    this.referenced = false;

    this.scope = scope;
    this.path = path;
    this.kind = kind;
  }

  /**
   * Description
   */

  Binding.prototype.setTypeAnnotation = function setTypeAnnotation() {
    var typeInfo = this.path.getTypeAnnotation();
    this.typeAnnotationInferred = typeInfo.inferred;
    this.typeAnnotation = typeInfo.annotation;
  };

  /**
   * Description
   */

  Binding.prototype.isTypeGeneric = function isTypeGeneric() {
    var _path;

    return (_path = this.path).isTypeGeneric.apply(_path, arguments);
  };

  /**
   * Description
   */

  Binding.prototype.assignTypeGeneric = function assignTypeGeneric(type, params) {
    var typeParams = null;
    if (params) params = t.typeParameterInstantiation(params);
    this.assignType(t.genericTypeAnnotation(t.identifier(type), typeParams));
  };

  /**
   * Description
   */

  Binding.prototype.assignType = function assignType(type) {
    this.typeAnnotation = type;
  };

  /**
   * Description
   */

  Binding.prototype.reassign = function reassign(path) {
    this.constant = false;
    this.constantViolations.push(path);

    if (this.typeAnnotationInferred) {
      // destroy the inferred typeAnnotation
      this.typeAnnotation = null;
    }
  };

  /**
   * Description
   */

  Binding.prototype.reference = function reference() {
    this.referenced = true;
    this.references++;
  };

  /**
   * Description
   */

  Binding.prototype.dereference = function dereference() {
    this.references--;
    this.referenced = !!this.references;
  };

  /**
   * Description
   */

  Binding.prototype.isCompatibleWithType = function isCompatibleWithType(newType) {
    return false;
  };

  return Binding;
})();

exports["default"] = Binding;
module.exports = exports["default"];
},{"../../types":169}],164:[function(require,module,exports){
"use strict";

exports.__esModule = true;

var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var _lodashCollectionIncludes = require("lodash/collection/includes");

var _lodashCollectionIncludes2 = _interopRequireDefault(_lodashCollectionIncludes);

var _visitors = require("../visitors");

var _index = require("../index");

var _index2 = _interopRequireDefault(_index);

var _lodashObjectDefaults = require("lodash/object/defaults");

var _lodashObjectDefaults2 = _interopRequireDefault(_lodashObjectDefaults);

var _messages = require("../../messages");

var messages = _interopRequireWildcard(_messages);

var _binding = require("./binding");

var _binding2 = _interopRequireDefault(_binding);

var _globals = require("globals");

var _globals2 = _interopRequireDefault(_globals);

var _lodashArrayFlatten = require("lodash/array/flatten");

var _lodashArrayFlatten2 = _interopRequireDefault(_lodashArrayFlatten);

var _lodashObjectExtend = require("lodash/object/extend");

var _lodashObjectExtend2 = _interopRequireDefault(_lodashObjectExtend);

var _helpersObject = require("../../helpers/object");

var _helpersObject2 = _interopRequireDefault(_helpersObject);

var _lodashCollectionEach = require("lodash/collection/each");

var _lodashCollectionEach2 = _interopRequireDefault(_lodashCollectionEach);

var _types = require("../../types");

var t = _interopRequireWildcard(_types);

var functionVariableVisitor = {
  enter: function enter(node, parent, scope, state) {
    if (t.isFor(node)) {
      var _arr = t.FOR_INIT_KEYS;

      for (var _i = 0; _i < _arr.length; _i++) {
        var key = _arr[_i];
        var declar = this.get(key);
        if (declar.isVar()) state.scope.registerBinding("var", declar);
      }
    }

    // this block is a function so we'll stop since none of the variables
    // declared within are accessible
    if (this.isFunction()) return this.skip();

    // function identifier doesn't belong to this scope
    if (state.blockId && node === state.blockId) return;

    // delegate block scope handling to the `blockVariableVisitor`
    if (this.isBlockScoped()) return;

    // this will be hit again once we traverse into it after this iteration
    if (this.isExportDeclaration() && t.isDeclaration(node.declaration)) return;

    // we've ran into a declaration!
    if (this.isDeclaration()) state.scope.registerDeclaration(this);
  }
};

var programReferenceVisitor = (0, _visitors.explode)({
  ReferencedIdentifier: function ReferencedIdentifier(node, parent, scope, state) {
    var bindingInfo = scope.getBinding(node.name);
    if (bindingInfo) {
      bindingInfo.reference();
    } else {
      state.addGlobal(node);
    }
  },

  Scopable: function Scopable(node, parent, scope, state) {
    for (var name in scope.bindings) {
      state.references[name] = true;
    }
  },

  ExportDeclaration: {
    exit: function exit(node, parent, scope, state) {
      var declar = node.declaration;
      if (t.isClassDeclaration(declar) || t.isFunctionDeclaration(declar)) {
        scope.getBinding(declar.id.name).reference();
      } else if (t.isVariableDeclaration(declar)) {
        var _arr2 = declar.declarations;

        for (var _i2 = 0; _i2 < _arr2.length; _i2++) {
          var decl = _arr2[_i2];
          var ids = t.getBindingIdentifiers(decl);
          for (var name in ids) {
            scope.getBinding(name).reference();
          }
        }
      }
    }
  },

  LabeledStatement: function LabeledStatement(node, parent, scope, state) {
    state.addGlobal(node);
  },

  AssignmentExpression: function AssignmentExpression(node, parent, scope, state) {
    scope.registerConstantViolation(this.get("left"), this.get("right"));
  },

  UpdateExpression: function UpdateExpression(node, parent, scope, state) {
    scope.registerConstantViolation(this.get("argument"), null);
  },

  UnaryExpression: function UnaryExpression(node, parent, scope, state) {
    if (node.operator === "delete") scope.registerConstantViolation(this.get("left"), null);
  }
});

var blockVariableVisitor = (0, _visitors.explode)({
  Scope: function Scope() {
    this.skip();
  },

  enter: function enter(node, parent, scope, state) {
    if (this.isFunctionDeclaration() || this.isBlockScoped()) {
      state.registerDeclaration(this);
    }
  }
});

var renameVisitor = (0, _visitors.explode)({
  ReferencedIdentifier: function ReferencedIdentifier(node, parent, scope, state) {
    if (node.name === state.oldName) {
      node.name = state.newName;
    }
  },

  Declaration: function Declaration(node, parent, scope, state) {
    var ids = this.getBindingIdentifiers();;

    for (var name in ids) {
      if (name === state.oldName) ids[name].name = state.newName;
    }
  },

  Scopable: function Scopable(node, parent, scope, state) {
    if (this.isScope()) {
      if (!scope.bindingIdentifierEquals(state.oldName, state.binding)) {
        this.skip();
      }
    }
  }
});

var Scope = (function () {

  /**
   * This searches the current "scope" and collects all references/bindings
   * within.
   */

  function Scope(path, parent, file) {
    _classCallCheck(this, Scope);

    if (parent && parent.block === path.node) {
      return parent;
    }

    var cached = path.getData("scope");
    if (cached && cached.parent === parent) {
      return cached;
    } else {}

    this.parent = parent;
    this.file = parent ? parent.file : file;

    this.parentBlock = path.parent;
    this.block = path.node;
    this.path = path;

    this.crawl();
  }

  /**
   * Description
   */

  Scope.prototype.traverse = function traverse(node, opts, state) {
    (0, _index2["default"])(node, opts, this, state, this.path);
  };

  /**
   * Since `Scope` instances are unique to their traversal we need some other
   * way to compare if scopes are the same. Here we just compare `this.bindings`
   * as it will be the same across all instances.
   */

  Scope.prototype.is = function is(scope) {
    return this.bindings === scope.bindings;
  };

  /**
   * Description
   */

  Scope.prototype.generateDeclaredUidIdentifier = function generateDeclaredUidIdentifier() {
    var name = arguments[0] === undefined ? "temp" : arguments[0];

    var id = this.generateUidIdentifier(name);
    this.push({ id: id });
    return id;
  };

  /**
   * Description
   */

  Scope.prototype.generateUidIdentifier = function generateUidIdentifier(name) {
    return t.identifier(this.generateUid(name));
  };

  /**
   * Description
   */

  Scope.prototype.generateUid = function generateUid(name) {
    name = t.toIdentifier(name).replace(/^_+/, "");

    var uid;
    var i = 0;
    do {
      uid = this._generateUid(name, i);
      i++;
    } while (this.hasBinding(uid) || this.hasGlobal(uid) || this.hasReference(uid));

    var program = this.getProgramParent();
    program.references[uid] = true;
    program.uids[uid] = true;

    return uid;
  };

  Scope.prototype._generateUid = function _generateUid(name, i) {
    var id = name;
    if (i > 1) id += i;
    return "_" + id;
  };

  /*
   * Description
   */

  Scope.prototype.generateUidIdentifierBasedOnNode = function generateUidIdentifierBasedOnNode(parent, defaultName) {
    var node = parent;

    if (t.isAssignmentExpression(parent)) {
      node = parent.left;
    } else if (t.isVariableDeclarator(parent)) {
      node = parent.id;
    } else if (t.isProperty(node)) {
      node = node.key;
    }

    var parts = [];

    var add = function add(node) {
      if (t.isModuleDeclaration(node)) {
        if (node.source) {
          add(node.source);
        } else if (node.specifiers && node.specifiers.length) {
          var _arr3 = node.specifiers;

          for (var _i3 = 0; _i3 < _arr3.length; _i3++) {
            var specifier = _arr3[_i3];
            add(specifier);
          }
        } else if (node.declaration) {
          add(node.declaration);
        }
      } else if (t.isModuleSpecifier(node)) {
        add(node.local);
      } else if (t.isMemberExpression(node)) {
        add(node.object);
        add(node.property);
      } else if (t.isIdentifier(node)) {
        parts.push(node.name);
      } else if (t.isLiteral(node)) {
        parts.push(node.value);
      } else if (t.isCallExpression(node)) {
        add(node.callee);
      } else if (t.isObjectExpression(node) || t.isObjectPattern(node)) {
        var _arr4 = node.properties;

        for (var _i4 = 0; _i4 < _arr4.length; _i4++) {
          var prop = _arr4[_i4];
          add(prop.key || prop.argument);
        }
      }
    };

    add(node);

    var id = parts.join("$");
    id = id.replace(/^_/, "") || defaultName || "ref";

    return this.generateUidIdentifier(id);
  };

  /**
   * Determine whether evaluating the specific input `node` is a consequenceless reference. ie.
   * evaluating it wont result in potentially arbitrary code from being ran. The following are
   * whitelisted and determined not cause side effects:
   *
   *  - `this` expressions
   *  - `super` expressions
   *  - Bound identifiers
   */

  Scope.prototype.isStatic = function isStatic(node) {
    if (t.isThisExpression(node) || t.isSuper(node)) {
      return true;
    }

    if (t.isIdentifier(node) && this.hasBinding(node.name)) {
      return true;
    }

    return false;
  };

  /**
   * Description
   */

  Scope.prototype.maybeGenerateMemoised = function maybeGenerateMemoised(node, dontPush) {
    if (this.isStatic(node)) {
      return null;
    } else {
      var id = this.generateUidIdentifierBasedOnNode(node);
      if (!dontPush) this.push({ id: id });
      return id;
    }
  };

  /**
   * Description
   */

  Scope.prototype.checkBlockScopedCollisions = function checkBlockScopedCollisions(kind, name, id) {
    var local = this.getOwnBindingInfo(name);
    if (!local) return;

    if (kind === "param") return;
    if (kind === "hoisted" && local.kind === "let") return;

    var duplicate = false;
    if (!duplicate) duplicate = kind === "let" || kind === "const" || local.kind === "let" || local.kind === "const" || local.kind === "module";
    if (!duplicate) duplicate = local.kind === "param" && (kind === "let" || kind === "const");

    if (duplicate) {
      throw this.file.errorWithNode(id, messages.get("scopeDuplicateDeclaration", name), TypeError);
    }
  };

  /**
   * Description
   */

  Scope.prototype.rename = function rename(oldName, newName, block) {
    newName = newName || this.generateUidIdentifier(oldName).name;

    var info = this.getBinding(oldName);
    if (!info) return;

    var state = {
      newName: newName,
      oldName: oldName,
      binding: info.identifier,
      info: info
    };

    var scope = info.scope;
    scope.traverse(block || scope.block, renameVisitor, state);

    if (!block) {
      scope.removeOwnBinding(oldName);
      scope.bindings[newName] = info;
      state.binding.name = newName;
    }

    var file = this.file;
    if (file) {
      this._renameFromMap(file.moduleFormatter.localImports, oldName, newName, state.binding);
      //this._renameFromMap(file.moduleFormatter.localExports, oldName, newName);
    }
  };

  Scope.prototype._renameFromMap = function _renameFromMap(map, oldName, newName, value) {
    if (map[oldName]) {
      map[newName] = value;
      map[oldName] = null;
    }
  };

  /**
   * Description
   */

  Scope.prototype.dump = function dump() {
    var scope = this;
    do {
      console.log(scope.block.type, "Bindings:", Object.keys(scope.bindings));
    } while (scope = scope.parent);
    console.log("-------------");
  };

  /**
   * Description
   */

  Scope.prototype.toArray = function toArray(node, i) {
    var file = this.file;

    if (t.isIdentifier(node)) {
      var binding = this.getBinding(node.name);
      if (binding && binding.constant && binding.isTypeGeneric("Array")) return node;
    }

    if (t.isArrayExpression(node)) {
      return node;
    }

    if (t.isIdentifier(node, { name: "arguments" })) {
      return t.callExpression(t.memberExpression(file.addHelper("slice"), t.identifier("call")), [node]);
    }

    var helperName = "to-array";
    var args = [node];
    if (i === true) {
      helperName = "to-consumable-array";
    } else if (i) {
      args.push(t.literal(i));
      helperName = "sliced-to-array";
      if (this.file.isLoose("es6.forOf")) helperName += "-loose";
    }
    return t.callExpression(file.addHelper(helperName), args);
  };

  /**
   * Description
   */

  Scope.prototype.registerDeclaration = function registerDeclaration(path) {
    var node = path.node;
    if (t.isFunctionDeclaration(node)) {
      this.registerBinding("hoisted", path);
    } else if (t.isVariableDeclaration(node)) {
      var declarations = path.get("declarations");
      var _arr5 = declarations;
      for (var _i5 = 0; _i5 < _arr5.length; _i5++) {
        var declar = _arr5[_i5];
        this.registerBinding(node.kind, declar);
      }
    } else if (t.isClassDeclaration(node)) {
      this.registerBinding("let", path);
    } else if (t.isImportDeclaration(node) || t.isExportDeclaration(node)) {
      this.registerBinding("module", path);
    } else {
      this.registerBinding("unknown", path);
    }
  };

  /**
   * Description
   */

  Scope.prototype.registerConstantViolation = function registerConstantViolation(left, right) {
    var ids = left.getBindingIdentifiers();
    for (var name in ids) {
      var binding = this.getBinding(name);
      if (!binding) continue;

      if (right) {
        var rightType = right.typeAnnotation;
        if (rightType && binding.isCompatibleWithType(rightType)) continue;
      }

      binding.reassign(left, right);
    }
  };

  /**
   * Description
   */

  Scope.prototype.registerBinding = function registerBinding(kind, path) {
    if (!kind) throw new ReferenceError("no `kind`");

    if (path.isVariableDeclaration()) {
      var declarators = path.get("declarations");
      var _arr6 = declarators;
      for (var _i6 = 0; _i6 < _arr6.length; _i6++) {
        var declar = _arr6[_i6];
        this.registerBinding(kind, declar);
      }
      return;
    }

    var ids = path.getBindingIdentifiers();

    for (var name in ids) {
      var id = ids[name];

      this.checkBlockScopedCollisions(kind, name, id);

      this.bindings[name] = new _binding2["default"]({
        identifier: id,
        scope: this,
        path: path,
        kind: kind
      });
    }
  };

  /**
   * Description
   */

  Scope.prototype.addGlobal = function addGlobal(node) {
    this.globals[node.name] = node;
  };

  /**
   * Description
   */

  Scope.prototype.hasUid = function hasUid(name) {
    var scope = this;

    do {
      if (scope.uids[name]) return true;
    } while (scope = scope.parent);

    return false;
  };

  /**
   * Description
   */

  Scope.prototype.hasGlobal = function hasGlobal(name) {
    var scope = this;

    do {
      if (scope.globals[name]) return true;
    } while (scope = scope.parent);

    return false;
  };

  /**
   * Description
   */

  Scope.prototype.hasReference = function hasReference(name) {
    var scope = this;

    do {
      if (scope.references[name]) return true;
    } while (scope = scope.parent);

    return false;
  };

  /**
   * Description
   */

  Scope.prototype.recrawl = function recrawl() {
    this.path.setData("scopeInfo", null);
    this.crawl();
  };

  /**
   * Description
   */

  Scope.prototype.isPure = function isPure(node) {
    if (t.isIdentifier(node)) {
      var bindingInfo = this.getBinding(node.name);
      return bindingInfo && bindingInfo.constant;
    } else {
      return t.isPure(node);
    }
  };

  /**
   * Description
   */

  Scope.prototype.crawl = function crawl() {
    var path = this.path;

    //

    var info = this.block._scopeInfo;
    if (info) return (0, _lodashObjectExtend2["default"])(this, info);

    info = this.block._scopeInfo = {
      references: (0, _helpersObject2["default"])(),
      bindings: (0, _helpersObject2["default"])(),
      globals: (0, _helpersObject2["default"])(),
      uids: (0, _helpersObject2["default"])() };

    (0, _lodashObjectExtend2["default"])(this, info);

    // ForStatement - left, init

    if (path.isLoop()) {
      var _arr7 = t.FOR_INIT_KEYS;

      for (var _i7 = 0; _i7 < _arr7.length; _i7++) {
        var key = _arr7[_i7];
        var node = path.get(key);
        if (node.isBlockScoped()) this.registerBinding(node.node.kind, node);
      }
    }

    // FunctionExpression - id

    if (path.isFunctionExpression() && path.has("id")) {
      if (!t.isProperty(path.parent, { method: true })) {
        this.registerBinding("var", path.get("id"));
      }
    }

    // Class

    if (path.isClassDeclaration()) {
      var name = path.node.id.name;
      this.bindings[name] = this.parent.bindings[name];
    }

    if (path.isClassExpression() && path.has("id")) {
      this.registerBinding("var", path);
    }

    // Function - params, rest

    if (path.isFunction()) {
      var params = path.get("params");
      var _arr8 = params;
      for (var _i8 = 0; _i8 < _arr8.length; _i8++) {
        var param = _arr8[_i8];
        this.registerBinding("param", param);
      }
      this.traverse(path.get("body").node, blockVariableVisitor, this);
    }

    // Program, Function - var variables

    if (path.isProgram() || path.isFunction()) {
      this.traverse(path.node, functionVariableVisitor, {
        blockId: path.get("id").node,
        scope: this
      });
    }

    // Program, BlockStatement, Function - let variables

    if (path.isBlockStatement() || path.isProgram()) {
      this.traverse(path.node, blockVariableVisitor, this);
    }

    // CatchClause - param

    if (path.isCatchClause()) {
      this.registerBinding("let", path.get("param"));
    }

    // ComprehensionExpression - blocks

    if (path.isComprehensionExpression()) {
      this.registerBinding("let", path);
    }

    // Program

    if (path.isProgram()) {
      this.traverse(path.node, programReferenceVisitor, this);
    }
  };

  /**
   * Description
   */

  Scope.prototype.push = function push(opts) {
    var path = this.path;

    if (path.isLoop() || path.isCatchClause() || path.isFunction()) {
      t.ensureBlock(path.node);
      path = path.get("body");
    }

    if (!path.isBlockStatement() && !path.isProgram()) {
      path = this.getBlockParent().path;
    }

    var unique = opts.unique;
    var kind = opts.kind || "var";

    var dataKey = "declaration:" + kind;
    var declar = !unique && path.getData(dataKey);

    if (!declar) {
      declar = t.variableDeclaration(kind, []);
      declar._generated = true;
      declar._blockHoist = 2;

      this.file.attachAuxiliaryComment(declar);

      var _path$get$0$_containerInsertBefore = path.get("body")[0]._containerInsertBefore([declar]);

      var declarPath = _path$get$0$_containerInsertBefore[0];

      this.registerBinding(kind, declarPath);
      if (!unique) path.setData(dataKey, declar);
    }

    declar.declarations.push(t.variableDeclarator(opts.id, opts.init));
  };

  /**
   * Walk up to the top of the scope tree and get the `Program`.
   */

  Scope.prototype.getProgramParent = function getProgramParent() {
    var scope = this;
    while (scope.parent) {
      scope = scope.parent;
    }
    return scope;
  };

  /**
   * Walk up the scope tree until we hit either a Function or reach the
   * very top and hit Program.
   */

  Scope.prototype.getFunctionParent = function getFunctionParent() {
    var scope = this;
    while (scope.parent && !t.isFunction(scope.block)) {
      scope = scope.parent;
    }
    return scope;
  };

  /**
   * Walk up the scope tree until we hit either a BlockStatement/Loop or reach the
   * very top and hit Program.
   */

  Scope.prototype.getBlockParent = function getBlockParent() {
    var scope = this;
    while (scope.parent && !t.isFunction(scope.block) && !t.isLoop(scope.block) && !t.isFunction(scope.block)) {
      scope = scope.parent;
    }
    return scope;
  };

  /**
   * Walks the scope tree and gathers **all** bindings.
   */

  Scope.prototype.getAllBindings = function getAllBindings() {
    var ids = (0, _helpersObject2["default"])();

    var scope = this;
    do {
      (0, _lodashObjectDefaults2["default"])(ids, scope.bindings);
      scope = scope.parent;
    } while (scope);

    return ids;
  };

  /**
   * Walks the scope tree and gathers all declarations of `kind`.
   */

  Scope.prototype.getAllBindingsOfKind = function getAllBindingsOfKind() {
    var ids = (0, _helpersObject2["default"])();

    var _arr9 = arguments;
    for (var _i9 = 0; _i9 < _arr9.length; _i9++) {
      var kind = _arr9[_i9];
      var scope = this;
      do {
        for (var name in scope.bindings) {
          var binding = scope.bindings[name];
          if (binding.kind === kind) ids[name] = binding;
        }
        scope = scope.parent;
      } while (scope);
    }

    return ids;
  };

  /**
   * Description
   */

  Scope.prototype.bindingIdentifierEquals = function bindingIdentifierEquals(name, node) {
    return this.getBindingIdentifier(name) === node;
  };

  /**
   * Description
   */

  Scope.prototype.getBinding = function getBinding(name) {
    var scope = this;

    do {
      var binding = scope.getOwnBindingInfo(name);
      if (binding) return binding;
    } while (scope = scope.parent);
  };

  /**
   * Description
   */

  Scope.prototype.getOwnBindingInfo = function getOwnBindingInfo(name) {
    return this.bindings[name];
  };

  /**
   * Description
   */

  Scope.prototype.getBindingIdentifier = function getBindingIdentifier(name) {
    var info = this.getBinding(name);
    return info && info.identifier;
  };

  /**
   * Description
   */

  Scope.prototype.getOwnBindingIdentifier = function getOwnBindingIdentifier(name) {
    var binding = this.bindings[name];
    return binding && binding.identifier;
  };

  /**
   * Description
   */

  Scope.prototype.hasOwnBinding = function hasOwnBinding(name) {
    return !!this.getOwnBindingInfo(name);
  };

  /**
   * Description
   */

  Scope.prototype.hasBinding = function hasBinding(name) {
    if (!name) return false;
    if (this.hasOwnBinding(name)) return true;
    if (this.parentHasBinding(name)) return true;
    if (this.hasUid(name)) return true;
    if ((0, _lodashCollectionIncludes2["default"])(Scope.globals, name)) return true;
    if ((0, _lodashCollectionIncludes2["default"])(Scope.contextVariables, name)) return true;
    return false;
  };

  /**
   * Description
   */

  Scope.prototype.parentHasBinding = function parentHasBinding(name) {
    return this.parent && this.parent.hasBinding(name);
  };

  /**
   * Move a binding of `name` to another `scope`.
   */

  Scope.prototype.moveBindingTo = function moveBindingTo(name, scope) {
    var info = this.getBinding(name);
    if (info) {
      info.scope.removeOwnBinding(name);
      info.scope = scope;
      scope.bindings[name] = info;
    }
  };

  /**
   * Description
   */

  Scope.prototype.removeOwnBinding = function removeOwnBinding(name) {
    delete this.bindings[name];
  };

  /**
   * Description
   */

  Scope.prototype.removeBinding = function removeBinding(name) {
    var info = this.getBinding(name);
    if (info) info.scope.removeOwnBinding(name);
  };

  _createClass(Scope, null, [{
    key: "globals",
    value: (0, _lodashArrayFlatten2["default"])([_globals2["default"].builtin, _globals2["default"].browser, _globals2["default"].node].map(Object.keys)),
    enumerable: true
  }, {
    key: "contextVariables",
    value: ["this", "arguments", "super"],
    enumerable: true
  }]);

  return Scope;
})();

exports["default"] = Scope;
module.exports = exports["default"];

//path.setData("scope", this);
},{"../../helpers/object":45,"../../messages":47,"../../types":169,"../index":157,"../visitors":165,"./binding":163,"globals":316,"lodash/array/flatten":325,"lodash/collection/each":330,"lodash/collection/includes":332,"lodash/object/defaults":418,"lodash/object/extend":419}],165:[function(require,module,exports){
"use strict";

exports.__esModule = true;
exports.explode = explode;
exports.verify = verify;
exports.merge = merge;

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

var _pathVirtualTypes = require("./path/virtual-types");

var virtualTypes = _interopRequireWildcard(_pathVirtualTypes);

var _messages = require("../messages");

var messages = _interopRequireWildcard(_messages);

var _types = require("../types");

var t = _interopRequireWildcard(_types);

var _esquery = require("esquery");

var _esquery2 = _interopRequireDefault(_esquery);

function explode(visitor, mergeConflicts) {
  if (visitor._exploded) return visitor;
  visitor._exploded = true;

  // make sure there's no __esModule type since this is because we're using loose mode
  // and it sets __esModule to be enumerable on all modules :(
  delete visitor.__esModule;

  if (visitor.queries) {
    ensureEntranceObjects(visitor.queries);
    addQueries(visitor);
    delete visitor.queries;
  }

  // ensure visitors are objects
  ensureEntranceObjects(visitor);

  // add type wrappers
  for (var nodeType in visitor) {
    if (shouldIgnoreKey(nodeType)) continue;

    var wrapper = virtualTypes[nodeType];
    if (!wrapper) continue;

    // wrap all the functions
    var fns = visitor[nodeType];
    for (var type in fns) {
      fns[type] = wrapCheck(wrapper, fns[type]);
    }

    // clear it from the visitor
    delete visitor[nodeType];

    if (wrapper.type) {
      // merge the visitor if necessary or just put it back in
      if (visitor[wrapper.type]) {
        mergePair(visitor[wrapper.type], fns);
      } else {
        visitor[wrapper.type] = fns;
      }
    } else {
      mergePair(visitor, fns);
    }
  }

  // add aliases
  for (var nodeType in visitor) {
    if (shouldIgnoreKey(nodeType)) continue;

    var fns = visitor[nodeType];

    var aliases = t.FLIPPED_ALIAS_KEYS[nodeType];
    if (!aliases) continue;

    // clear it form the visitor
    delete visitor[nodeType];

    var _arr = aliases;
    for (var _i = 0; _i < _arr.length; _i++) {
      var alias = _arr[_i];
      var existing = visitor[alias];
      if (existing) {
        if (mergeConflicts) {
          mergePair(existing, fns);
        }
      } else {
        visitor[alias] = fns;
      }
    }
  }

  return visitor;
}

function verify(visitor) {
  if (visitor._verified) return;

  if (typeof visitor === "function") {
    throw new Error(messages.get("traverseVerifyRootFunction"));
  }

  for (var nodeType in visitor) {
    if (shouldIgnoreKey(nodeType)) continue;

    if (t.TYPES.indexOf(nodeType) < 0 && !virtualTypes[nodeType]) {
      throw new Error(messages.get("traverseVerifyNodeType", nodeType));
    }

    var visitors = visitor[nodeType];
    if (typeof visitors === "object") {
      for (var visitorKey in visitors) {
        if (visitorKey === "enter" || visitorKey === "exit") continue;
        throw new Error(messages.get("traverseVerifyVisitorProperty", nodeType, visitorKey));
      }
    }
  }

  visitor._verified = true;
}

function merge(visitors) {
  var rootVisitor = {};

  var _arr2 = visitors;
  for (var _i2 = 0; _i2 < _arr2.length; _i2++) {
    var visitor = _arr2[_i2];
    for (var type in visitor) {
      var nodeVisitor = rootVisitor[type] = rootVisitor[type] || {};
      mergePair(nodeVisitor, visitor[type]);
    }
  }

  return rootVisitor;
}

function ensureEntranceObjects(obj) {
  for (var key in obj) {
    if (shouldIgnoreKey(key)) continue;

    var fns = obj[key];
    if (typeof fns === "function") {
      obj[key] = { enter: fns };
    }
  }
}

function addQueries(visitor) {
  for (var selector in visitor.queries) {
    var fns = visitor.queries[selector];
    addSelector(visitor, selector, fns);
  }
}

function addSelector(visitor, selector, fns) {
  selector = _esquery2["default"].parse(selector);

  var _loop = function () {
    var fn = fns[key];
    fns[key] = function (node) {
      if (_esquery2["default"].matches(node, selector, this.getAncestry())) {
        return fn.apply(this, arguments);
      }
    };
  };

  for (var key in fns) {
    _loop();
  }

  mergePair(visitor, fns);
}

function wrapCheck(wrapper, fn) {
  return function () {
    if (wrapper.checkPath(this)) {
      return fn.apply(this, arguments);
    }
  };
}

function shouldIgnoreKey(key) {
  // internal/hidden key
  if (key[0] === "_") return true;

  // ignore function keys
  if (key === "enter" || key === "exit" || key === "shouldSkip") return true;

  // ignore other options
  if (key === "blacklist" || key === "noScope") return true;

  return false;
}

function mergePair(dest, src) {
  for (var key in src) {
    dest[key] = (dest[key] || []).concat(src[key]);
  }
}
},{"../messages":47,"../types":169,"./path/virtual-types":162,"esquery":307}],166:[function(require,module,exports){
module.exports={
  "ExpressionStatement":      ["Statement"],
  "BreakStatement":           ["Statement", "Terminatorless"],
  "ContinueStatement":        ["Statement", "Terminatorless"],
  "DebuggerStatement":        ["Statement"],
  "DoWhileStatement":         ["Statement", "Loop", "While", "Scopable"],
  "IfStatement":              ["Statement"],
  "ReturnStatement":          ["Statement", "Terminatorless"],
  "SwitchStatement":          ["Statement", "Scopable"],
  "ThrowStatement":           ["Statement", "Terminatorless"],
  "TryStatement":             ["Statement"],
  "WhileStatement":           ["Statement", "Loop", "While", "Scopable"],
  "WithStatement":            ["Statement"],
  "EmptyStatement":           ["Statement"],
  "LabeledStatement":         ["Statement"],
  "VariableDeclaration":      ["Statement", "Declaration"],

  "ImportSpecifier":            ["ModuleSpecifier"],
  "ExportSpecifier":            ["ModuleSpecifier"],
  "ImportDefaultSpecifier":     ["ModuleSpecifier"],
  "ExportDefaultSpecifier":     ["ModuleSpecifier"],
  "ExportNamespaceSpecifier":   ["ModuleSpecifier"],
  "ExportDefaultFromSpecifier": ["ModuleSpecifier"],
  "ExportAllDeclaration":       ["Statement", "Declaration", "ModuleDeclaration", "ExportDeclaration"],
  "ExportDefaultDeclaration":   ["Statement", "Declaration", "ModuleDeclaration", "ExportDeclaration"],
  "ExportNamedDeclaration":     ["Statement", "Declaration", "ModuleDeclaration", "ExportDeclaration"],
  "ImportDeclaration":          ["Statement", "Declaration", "ModuleDeclaration"],

  "ArrowFunctionExpression": ["Scopable", "Function", "Func", "Expression", "Pure"],
  "FunctionDeclaration":     ["Scopable", "Function", "Func", "Statement", "Pure", "Declaration"],
  "FunctionExpression":      ["Scopable", "Function", "Func", "Expression", "Pure"],

  "BlockStatement": ["Scopable", "Statement"],
  "Program":        ["Scopable"],
  "CatchClause":    ["Scopable"],

  "LogicalExpression": ["Binary", "Expression"],
  "BinaryExpression":  ["Binary", "Expression"],

  "UnaryExpression": ["UnaryLike", "Expression"],
  "SpreadProperty":  ["UnaryLike"],
  "SpreadElement":   ["UnaryLike"],

  "ClassDeclaration": ["Scopable", "Class", "Pure", "Statement", "Declaration"],
  "ClassExpression":  ["Scopable", "Class", "Pure", "Expression"],

  "ForOfStatement": ["Scopable", "Statement", "For", "Loop"],
  "ForInStatement": ["Scopable", "Statement", "For", "Loop"],
  "ForStatement":   ["Scopable", "Statement", "For", "Loop"],

  "ObjectPattern":     ["Pattern"],
  "ArrayPattern":      ["Pattern"],
  "AssignmentPattern": ["Pattern"],

  "Property":   ["UserWhitespacable"],

  "ArrayExpression":           ["Expression"],
  "AssignmentExpression":      ["Expression"],
  "AwaitExpression":           ["Expression", "Terminatorless"],
  "CallExpression":            ["Expression"],
  "ComprehensionExpression":   ["Expression", "Scopable"],
  "ConditionalExpression":     ["Expression"],
  "DoExpression":              ["Expression"],
  "Identifier":                ["Expression"],
  "Literal":                   ["Expression", "Pure"],
  "MemberExpression":          ["Expression"],
  "MetaProperty":              ["Expression"],
  "NewExpression":             ["Expression"],
  "ObjectExpression":          ["Expression"],
  "SequenceExpression":        ["Expression"],
  "TaggedTemplateExpression":  ["Expression"],
  "ThisExpression":            ["Expression"],
  "Super":                     ["Expression"],
  "UpdateExpression":          ["Expression"],
  "JSXEmptyExpression":        ["Expression"],
  "JSXMemberExpression":       ["Expression"],
  "YieldExpression":           ["Expression", "Terminatorless"],

  "AnyTypeAnnotation":           ["Flow"],
  "ArrayTypeAnnotation":         ["Flow"],
  "BooleanTypeAnnotation":       ["Flow"],
  "ClassImplements":             ["Flow"],
  "DeclareClass":                ["Flow", "Statement"],
  "DeclareFunction":             ["Flow", "Statement"],
  "DeclareModule":               ["Flow", "Statement"],
  "DeclareVariable":             ["Flow", "Statement"],
  "FunctionTypeAnnotation":      ["Flow"],
  "FunctionTypeParam":           ["Flow"],
  "GenericTypeAnnotation":       ["Flow"],
  "InterfaceExtends":            ["Flow"],
  "InterfaceDeclaration":        ["Flow", "Statement", "Declaration"],
  "IntersectionTypeAnnotation":  ["Flow"],
  "NullableTypeAnnotation":      ["Flow"],
  "NumberTypeAnnotation":        ["Flow"],
  "StringLiteralTypeAnnotation": ["Flow"],
  "StringTypeAnnotation":        ["Flow"],
  "TupleTypeAnnotation":         ["Flow"],
  "TypeofTypeAnnotation":        ["Flow"],
  "TypeAlias":                   ["Flow", "Statement"],
  "TypeAnnotation":              ["Flow"],
  "TypeCastExpression":          ["Flow"],
  "TypeParameterDeclaration":    ["Flow"],
  "TypeParameterInstantiation":  ["Flow"],
  "ObjectTypeAnnotation":        ["Flow"],
  "ObjectTypeCallProperty":      ["Flow", "UserWhitespacable"],
  "ObjectTypeIndexer":           ["Flow", "UserWhitespacable"],
  "ObjectTypeProperty":          ["Flow", "UserWhitespacable"],
  "QualifiedTypeIdentifier":     ["Flow"],
  "UnionTypeAnnotation":         ["Flow"],
  "VoidTypeAnnotation":          ["Flow"],

  "JSXAttribute":           ["JSX", "Immutable"],
  "JSXClosingElement":      ["JSX", "Immutable"],
  "JSXElement":             ["JSX", "Immutable", "Expression"],
  "JSXEmptyExpression":     ["JSX", "Immutable"],
  "JSXExpressionContainer": ["JSX", "Immutable"],
  "JSXIdentifier":          ["JSX"],
  "JSXMemberExpression":    ["JSX"],
  "JSXNamespacedName":      ["JSX"],
  "JSXOpeningElement":      ["JSX", "Immutable"],
  "JSXSpreadAttribute":     ["JSX"]
}

},{}],167:[function(require,module,exports){
module.exports={
  "ArrayExpression": {
    "elements": null
  },

  "ArrowFunctionExpression": {
    "params": null,
    "body": null
  },

  "AssignmentExpression": {
    "operator": null,
    "left": null,
    "right": null
  },

  "BinaryExpression": {
    "operator": null,
    "left": null,
    "right": null
  },

  "BindExpression": {
    "object": null,
    "callee": null
  },

  "BlockStatement": {
    "body": null
  },

  "CallExpression": {
    "callee": null,
    "arguments": null
  },

  "ConditionalExpression": {
    "test": null,
    "consequent": null,
    "alternate": null
  },

  "ExpressionStatement": {
    "expression": null
  },

  "File": {
    "program": null,
    "comments": null,
    "tokens": null
  },

  "FunctionExpression": {
    "id": null,
    "params": null,
    "body": null,
    "generator": false,
    "async": false
  },

  "FunctionDeclaration": {
    "id": null,
    "params": null,
    "body": null,
    "generator": false,
    "async": false
  },

  "GenericTypeAnnotation": {
    "id": null,
    "typeParameters": null
  },

  "Identifier": {
    "name": null
  },

  "IfStatement": {
    "test": null,
    "consequent": null,
    "alternate": null
  },

  "ImportDeclaration": {
    "specifiers": null,
    "source": null
  },

  "ImportSpecifier": {
    "local": null,
    "imported": null
  },

  "LabeledStatement": {
    "label": null,
    "body": null
  },

  "Literal": {
    "value": null
  },

  "LogicalExpression": {
    "operator": null,
    "left": null,
    "right": null
  },

  "MemberExpression": {
    "object": null,
    "property": null,
    "computed": false
  },

  "MethodDefinition": {
    "key": null,
    "value": null,
    "kind": "method",
    "computed": false,
    "static": false
  },

  "NewExpression": {
    "callee": null,
    "arguments": null
  },

  "ObjectExpression": {
    "properties": null
  },

  "Program": {
    "body": null
  },

  "Property": {
    "kind": null,
    "key": null,
    "value": null,
    "computed": false
  },

  "ReturnStatement": {
    "argument": null
  },

  "SequenceExpression": {
    "expressions": null
  },

  "TemplateLiteral": {
    "quasis": null,
    "expressions": null
  },

  "ThrowExpression": {
    "argument": null
  },

  "UnaryExpression": {
    "operator": null,
    "argument": null,
    "prefix": null
  },

  "VariableDeclaration": {
    "kind": null,
    "declarations": null
  },

  "VariableDeclarator": {
    "id": null,
    "init": null
  },

  "WithStatement": {
    "object": null,
    "body": null
  },

  "YieldExpression": {
    "argument": null,
    "delegate": null
  }
}

},{}],168:[function(require,module,exports){
"use strict";

exports.__esModule = true;

/**
 * Description
 */

exports.toComputedKey = toComputedKey;

/**
 * Turn an array of statement `nodes` into a `SequenceExpression`.
 *
 * Variable declarations are turned into simple assignments and their
 * declarations hoisted to the top of the current scope.
 *
 * Expression statements are just resolved to their expression.
 */

exports.toSequenceExpression = toSequenceExpression;

/**
 * Description
 */

exports.toKeyAlias = toKeyAlias;

/*
 * Description
 */

exports.toIdentifier = toIdentifier;

/**
 * Description
 *
 * @returns {Object|Boolean}
 */

exports.toStatement = toStatement;

/**
 * Description
 */

exports.toExpression = toExpression;

/**
 * Description
 */

exports.toBlock = toBlock;

/**
 * Description
 */

exports.valueToNode = valueToNode;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _lodashLangIsPlainObject = require("lodash/lang/isPlainObject");

var _lodashLangIsPlainObject2 = _interopRequireDefault(_lodashLangIsPlainObject);

var _lodashLangIsNumber = require("lodash/lang/isNumber");

var _lodashLangIsNumber2 = _interopRequireDefault(_lodashLangIsNumber);

var _lodashLangIsRegExp = require("lodash/lang/isRegExp");

var _lodashLangIsRegExp2 = _interopRequireDefault(_lodashLangIsRegExp);

var _lodashLangIsString = require("lodash/lang/isString");

var _lodashLangIsString2 = _interopRequireDefault(_lodashLangIsString);

var _traversal = require("../traversal");

var _traversal2 = _interopRequireDefault(_traversal);

var _lodashCollectionEach = require("lodash/collection/each");

var _lodashCollectionEach2 = _interopRequireDefault(_lodashCollectionEach);

var _index = require("./index");

var t = _interopRequireWildcard(_index);

function toComputedKey(node) {
  var key = arguments[1] === undefined ? node.key || node.property : arguments[1];
  return (function () {
    if (!node.computed) {
      if (t.isIdentifier(key)) key = t.literal(key.name);
    }
    return key;
  })();
}

function toSequenceExpression(nodes, scope) {
  var declars = [];
  var bailed = false;

  var result = convert(nodes);
  if (bailed) return;

  for (var i = 0; i < declars.length; i++) {
    scope.push(declars[i]);
  }

  return result;

  function convert(nodes) {
    var ensureLastUndefined = false;
    var exprs = [];

    var _arr = nodes;
    for (var _i = 0; _i < _arr.length; _i++) {
      var node = _arr[_i];
      if (t.isExpression(node)) {
        exprs.push(node);
      } else if (t.isExpressionStatement(node)) {
        exprs.push(node.expression);
      } else if (t.isVariableDeclaration(node)) {
        if (node.kind !== "var") return bailed = true; // bailed

        var _arr2 = node.declarations;
        for (var _i2 = 0; _i2 < _arr2.length; _i2++) {
          var declar = _arr2[_i2];
          var bindings = t.getBindingIdentifiers(declar);
          for (var key in bindings) {
            declars.push({
              kind: node.kind,
              id: bindings[key]
            });
          }

          if (declar.init) {
            exprs.push(t.assignmentExpression("=", declar.id, declar.init));
          }
        }

        ensureLastUndefined = true;
        continue;
      } else if (t.isIfStatement(node)) {
        var consequent = node.consequent ? convert([node.consequent]) : t.identifier("undefined");
        var alternate = node.alternate ? convert([node.alternate]) : t.identifier("undefined");
        if (!consequent || !alternate) return bailed = true;

        exprs.push(t.conditionalExpression(node.test, consequent, alternate));
      } else if (t.isBlockStatement(node)) {
        exprs.push(convert(node.body));
      } else {
        // bailed, we can't understand this
        return bailed = true;
      }

      ensureLastUndefined = false;
    }

    if (ensureLastUndefined) {
      exprs.push(t.identifier("undefined"));
    }

    //

    if (exprs.length === 1) {
      return exprs[0];
    } else {
      return t.sequenceExpression(exprs);
    }
  }
}

function toKeyAlias(node) {
  var key = arguments[1] === undefined ? node.key : arguments[1];
  return (function () {
    var alias;
    if (t.isIdentifier(key)) {
      alias = key.name;
    } else if (t.isLiteral(key)) {
      alias = JSON.stringify(key.value);
    } else {
      alias = JSON.stringify(_traversal2["default"].removeProperties(t.cloneDeep(key)));
    }
    if (node.computed) alias = "[" + alias + "]";
    return alias;
  })();
}

function toIdentifier(name) {
  if (t.isIdentifier(name)) return name.name;

  name = name + "";

  // replace all non-valid identifiers with dashes
  name = name.replace(/[^a-zA-Z0-9$_]/g, "-");

  // remove all dashes and numbers from start of name
  name = name.replace(/^[-0-9]+/, "");

  // camel case
  name = name.replace(/[-\s]+(.)?/g, function (match, c) {
    return c ? c.toUpperCase() : "";
  });

  if (!t.isValidIdentifier(name)) {
    name = "_" + name;
  }

  return name || "_";
}

function toStatement(node, ignore) {
  if (t.isStatement(node)) {
    return node;
  }

  var mustHaveId = false;
  var newType;

  if (t.isClass(node)) {
    mustHaveId = true;
    newType = "ClassDeclaration";
  } else if (t.isFunction(node)) {
    mustHaveId = true;
    newType = "FunctionDeclaration";
  } else if (t.isAssignmentExpression(node)) {
    return t.expressionStatement(node);
  }

  if (mustHaveId && !node.id) {
    newType = false;
  }

  if (!newType) {
    if (ignore) {
      return false;
    } else {
      throw new Error("cannot turn " + node.type + " to a statement");
    }
  }

  node.type = newType;

  return node;
}

function toExpression(node) {
  if (t.isExpressionStatement(node)) {
    node = node.expression;
  }

  if (t.isClass(node)) {
    node.type = "ClassExpression";
  } else if (t.isFunction(node)) {
    node.type = "FunctionExpression";
  }

  if (t.isExpression(node)) {
    return node;
  } else {
    throw new Error("cannot turn " + node.type + " to an expression");
  }
}

function toBlock(node, parent) {
  if (t.isBlockStatement(node)) {
    return node;
  }

  if (t.isEmptyStatement(node)) {
    node = [];
  }

  if (!Array.isArray(node)) {
    if (!t.isStatement(node)) {
      if (t.isFunction(parent)) {
        node = t.returnStatement(node);
      } else {
        node = t.expressionStatement(node);
      }
    }

    node = [node];
  }

  return t.blockStatement(node);
}

function valueToNode(value) {
  if (value === undefined) {
    return t.identifier("undefined");
  }

  if (value === true || value === false || value === null || (0, _lodashLangIsString2["default"])(value) || (0, _lodashLangIsNumber2["default"])(value) || (0, _lodashLangIsRegExp2["default"])(value)) {
    return t.literal(value);
  }

  if (Array.isArray(value)) {
    return t.arrayExpression(value.map(t.valueToNode));
  }

  if ((0, _lodashLangIsPlainObject2["default"])(value)) {
    var props = [];
    for (var key in value) {
      var nodeKey;
      if (t.isValidIdentifier(key)) {
        nodeKey = t.identifier(key);
      } else {
        nodeKey = t.literal(key);
      }
      props.push(t.property("init", nodeKey, t.valueToNode(value[key])));
    }
    return t.objectExpression(props);
  }

  throw new Error("don't know how to turn this value into a node");
}
},{"../traversal":157,"./index":169,"lodash/collection/each":330,"lodash/lang/isNumber":410,"lodash/lang/isPlainObject":412,"lodash/lang/isRegExp":413,"lodash/lang/isString":414}],169:[function(require,module,exports){
"use strict";

exports.__esModule = true;

/**
 * Returns whether `node` is of given `type`.
 *
 * For better performance, use this instead of `is[Type]` when `type` is unknown.
 * Optionally, pass `skipAliasCheck` to directly compare `node.type` with `type`.
 */

exports.is = is;
exports.isType = isType;

/*
 * Description
 */

exports.shallowEqual = shallowEqual;

/**
 * Description
 */

exports.appendToMemberExpression = appendToMemberExpression;

/**
 * Description
 */

exports.prependToMemberExpression = prependToMemberExpression;

/**
 * Description
 */

exports.ensureBlock = ensureBlock;

/**
 * Description
 */

exports.clone = clone;

/**
 * Description
 */

exports.cloneDeep = cloneDeep;

/**
 * Build a function that when called will return whether or not the
 * input `node` `MemberExpression` matches the input `match`.
 *
 * For example, given the match `React.createClass` it would match the
 * parsed nodes of `React.createClass` and `React["createClass"]`.
 */

exports.buildMatchMemberExpression = buildMatchMemberExpression;

/**
 * Description
 */

exports.removeComments = removeComments;

/**
 * Description
 */

exports.inheritsComments = inheritsComments;

/**
 * Description
 */

exports.inherits = inherits;

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _toFastProperties = require("to-fast-properties");

var _toFastProperties2 = _interopRequireDefault(_toFastProperties);

var _lodashArrayCompact = require("lodash/array/compact");

var _lodashArrayCompact2 = _interopRequireDefault(_lodashArrayCompact);

var _lodashObjectAssign = require("lodash/object/assign");

var _lodashObjectAssign2 = _interopRequireDefault(_lodashObjectAssign);

var _lodashCollectionEach = require("lodash/collection/each");

var _lodashCollectionEach2 = _interopRequireDefault(_lodashCollectionEach);

var _lodashArrayUniq = require("lodash/array/uniq");

var _lodashArrayUniq2 = _interopRequireDefault(_lodashArrayUniq);

var t = exports;

/**
 * Registers `is[Type]` and `assert[Type]` generated functions for a given `type`.
 * Pass `skipAliasCheck` to force it to directly compare `node.type` with `type`.
 */

function registerType(type, skipAliasCheck) {
  var is = t["is" + type] = function (node, opts) {
    return t.is(type, node, opts, skipAliasCheck);
  };

  t["assert" + type] = function (node, opts) {
    opts = opts || {};
    if (!is(node, opts)) {
      throw new Error("Expected type " + JSON.stringify(type) + " with option " + JSON.stringify(opts));
    }
  };
}

var STATEMENT_OR_BLOCK_KEYS = ["consequent", "body", "alternate"];
exports.STATEMENT_OR_BLOCK_KEYS = STATEMENT_OR_BLOCK_KEYS;
var NATIVE_TYPE_NAMES = ["Array", "ArrayBuffer", "Boolean", "DataView", "Date", "Error", "EvalError", "Float32Array", "Float64Array", "Function", "Int8Array", "Int16Array", "Int32Array", "Map", "Number", "Object", "Proxy", "Promise", "RangeError", "ReferenceError", "RegExp", "Set", "String", "Symbol", "SyntaxError", "TypeError", "Uint8Array", "Uint8ClampedArray", "Uint16Array", "Uint32Array", "URIError", "WeakMap", "WeakSet"];
exports.NATIVE_TYPE_NAMES = NATIVE_TYPE_NAMES;
var FLATTENABLE_KEYS = ["body", "expressions"];
exports.FLATTENABLE_KEYS = FLATTENABLE_KEYS;
var FOR_INIT_KEYS = ["left", "init"];
exports.FOR_INIT_KEYS = FOR_INIT_KEYS;
var COMMENT_KEYS = ["leadingComments", "trailingComments"];

exports.COMMENT_KEYS = COMMENT_KEYS;
var VISITOR_KEYS = require("./visitor-keys");
exports.VISITOR_KEYS = VISITOR_KEYS;
var BUILDER_KEYS = require("./builder-keys");
exports.BUILDER_KEYS = BUILDER_KEYS;
var ALIAS_KEYS = require("./alias-keys");

exports.ALIAS_KEYS = ALIAS_KEYS;
t.FLIPPED_ALIAS_KEYS = {};

(0, _lodashCollectionEach2["default"])(t.VISITOR_KEYS, function (keys, type) {
  registerType(type, true);
});

(0, _lodashCollectionEach2["default"])(t.ALIAS_KEYS, function (aliases, type) {
  (0, _lodashCollectionEach2["default"])(aliases, function (alias) {
    var types = t.FLIPPED_ALIAS_KEYS[alias] = t.FLIPPED_ALIAS_KEYS[alias] || [];
    types.push(type);
  });
});

(0, _lodashCollectionEach2["default"])(t.FLIPPED_ALIAS_KEYS, function (types, type) {
  t[type.toUpperCase() + "_TYPES"] = types;
  registerType(type, false);
});

var TYPES = Object.keys(t.VISITOR_KEYS).concat(Object.keys(t.FLIPPED_ALIAS_KEYS));exports.TYPES = TYPES;

function is(type, node, opts, skipAliasCheck) {
  if (!node) return false;

  var matches = isType(node.type, type);
  if (!matches) return false;

  if (typeof opts === "undefined") {
    return true;
  } else {
    return t.shallowEqual(node, opts);
  }
}

function isType(nodeType, targetType) {
  if (nodeType === targetType) return true;

  var aliases = t.FLIPPED_ALIAS_KEYS[targetType];
  if (aliases) {
    if (aliases[0] === nodeType) return true;

    var _arr = aliases;
    for (var _i = 0; _i < _arr.length; _i++) {
      var alias = _arr[_i];
      if (nodeType === alias) return true;
    }
  }

  return false;
}

(0, _lodashCollectionEach2["default"])(t.VISITOR_KEYS, function (keys, type) {
  if (t.BUILDER_KEYS[type]) return;

  var defs = {};
  (0, _lodashCollectionEach2["default"])(keys, function (key) {
    defs[key] = null;
  });
  t.BUILDER_KEYS[type] = defs;
});

(0, _lodashCollectionEach2["default"])(t.BUILDER_KEYS, function (keys, type) {
  t[type[0].toLowerCase() + type.slice(1)] = function () {
    var node = {};
    node.start = null;
    node.type = type;

    var i = 0;

    for (var key in keys) {
      var arg = arguments[i++];
      if (arg === undefined) arg = keys[key];
      node[key] = arg;
    }

    return node;
  };
});
function shallowEqual(actual, expected) {
  var keys = Object.keys(expected);

  var _arr2 = keys;
  for (var _i2 = 0; _i2 < _arr2.length; _i2++) {
    var key = _arr2[_i2];
    if (actual[key] !== expected[key]) {
      return false;
    }
  }

  return true;
}

function appendToMemberExpression(member, append, computed) {
  member.object = t.memberExpression(member.object, member.property, member.computed);
  member.property = append;
  member.computed = !!computed;
  return member;
}

function prependToMemberExpression(member, append) {
  member.object = t.memberExpression(append, member.object);
  return member;
}

function ensureBlock(node) {
  var key = arguments[1] === undefined ? "body" : arguments[1];

  return node[key] = t.toBlock(node[key], node);
}

function clone(node) {
  var newNode = {};
  for (var key in node) {
    if (key[0] === "_") continue;
    newNode[key] = node[key];
  }
  return newNode;
}

function cloneDeep(node) {
  var newNode = {};

  for (var key in node) {
    if (key[0] === "_") continue;

    var val = node[key];

    if (val) {
      if (val.type) {
        val = t.cloneDeep(val);
      } else if (Array.isArray(val)) {
        val = val.map(t.cloneDeep);
      }
    }

    newNode[key] = val;
  }

  return newNode;
}

function buildMatchMemberExpression(match, allowPartial) {
  var parts = match.split(".");

  return function (member) {
    // not a member expression
    if (!t.isMemberExpression(member)) return false;

    var search = [member];
    var i = 0;

    while (search.length) {
      var node = search.shift();

      if (allowPartial && i === parts.length) {
        return true;
      }

      if (t.isIdentifier(node)) {
        // this part doesn't match
        if (parts[i] !== node.name) return false;
      } else if (t.isLiteral(node)) {
        // this part doesn't match
        if (parts[i] !== node.value) return false;
      } else if (t.isMemberExpression(node)) {
        if (node.computed && !t.isLiteral(node.property)) {
          // we can't deal with this
          return false;
        } else {
          search.push(node.object);
          search.push(node.property);
          continue;
        }
      } else {
        // we can't deal with this
        return false;
      }

      // too many parts
      if (++i > parts.length) {
        return false;
      }
    }

    return true;
  };
}

function removeComments(child) {
  var _arr3 = COMMENT_KEYS;

  for (var _i3 = 0; _i3 < _arr3.length; _i3++) {
    var key = _arr3[_i3];
    delete child[key];
  }
  return child;
}

function inheritsComments(child, parent) {
  if (child && parent) {
    var _arr4 = COMMENT_KEYS;

    for (var _i4 = 0; _i4 < _arr4.length; _i4++) {
      var key = _arr4[_i4];
      child[key] = (0, _lodashArrayUniq2["default"])((0, _lodashArrayCompact2["default"])([].concat(child[key], parent[key])));
    }
  }
  return child;
}

function inherits(child, parent) {
  if (!child || !parent) return child;

  child._scopeInfo = parent._scopeInfo;
  child.range = parent.range;
  child.start = parent.start;
  child.loc = parent.loc;
  child.end = parent.end;

  child.typeAnnotation = parent.typeAnnotation;
  child.returnType = parent.returnType;

  t.inheritsComments(child, parent);
  return child;
}

(0, _toFastProperties2["default"])(t);
(0, _toFastProperties2["default"])(t.VISITOR_KEYS);

exports.__esModule = true;
(0, _lodashObjectAssign2["default"])(t, require("./retrievers"));
(0, _lodashObjectAssign2["default"])(t, require("./validators"));
(0, _lodashObjectAssign2["default"])(t, require("./converters"));
},{"./alias-keys":166,"./builder-keys":167,"./converters":168,"./retrievers":170,"./validators":171,"./visitor-keys":172,"lodash/array/compact":324,"lodash/array/uniq":328,"lodash/collection/each":330,"lodash/object/assign":417,"to-fast-properties":495}],170:[function(require,module,exports){
"use strict";

exports.__esModule = true;

/**
 * Return a list of binding identifiers associated with
 * the input `node`.
 */

exports.getBindingIdentifiers = getBindingIdentifiers;

/**
 * Description
 */

exports.getLastStatements = getLastStatements;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _helpersObject = require("../helpers/object");

var _helpersObject2 = _interopRequireDefault(_helpersObject);

var _index = require("./index");

var t = _interopRequireWildcard(_index);

function getBindingIdentifiers(node) {
  var search = [].concat(node);
  var ids = (0, _helpersObject2["default"])();

  while (search.length) {
    var id = search.shift();
    if (!id) continue;

    var keys = t.getBindingIdentifiers.keys[id.type];

    if (t.isIdentifier(id)) {
      ids[id.name] = id;
    } else if (t.isExportDeclaration(id)) {
      if (t.isDeclaration(node.declaration)) {
        search.push(node.declaration);
      }
    } else if (keys) {
      var _arr = keys;

      for (var _i = 0; _i < _arr.length; _i++) {
        var key = _arr[_i];
        search = search.concat(id[key] || []);
      }
    }
  }

  return ids;
}

getBindingIdentifiers.keys = {
  UnaryExpression: ["argument"],
  AssignmentExpression: ["left"],
  ImportSpecifier: ["local"],
  ImportNamespaceSpecifier: ["local"],
  ImportDefaultSpecifier: ["local"],
  VariableDeclarator: ["id"],
  FunctionDeclaration: ["id"],
  FunctionExpression: ["id"],
  ClassDeclaration: ["id"],
  ClassExpression: ["id"],
  SpreadElement: ["argument"],
  RestElement: ["argument"],
  UpdateExpression: ["argument"],
  SpreadProperty: ["argument"],
  Property: ["value"],
  ComprehensionBlock: ["left"],
  AssignmentPattern: ["left"],
  ComprehensionExpression: ["blocks"],
  ImportDeclaration: ["specifiers"],
  VariableDeclaration: ["declarations"],
  ArrayPattern: ["elements"],
  ObjectPattern: ["properties"]
};
function getLastStatements(node) {
  var nodes = [];

  var add = function add(node) {
    nodes = nodes.concat(getLastStatements(node));
  };

  if (t.isIfStatement(node)) {
    add(node.consequent);
    add(node.alternate);
  } else if (t.isFor(node) || t.isWhile(node)) {
    add(node.body);
  } else if (t.isProgram(node) || t.isBlockStatement(node)) {
    add(node.body[node.body.length - 1]);
  } else if (t.isLoop()) {} else if (node) {
    nodes.push(node);
  }

  return nodes;
}
},{"../helpers/object":45,"./index":169}],171:[function(require,module,exports){
"use strict";

exports.__esModule = true;

/**
 * Check if the input `node` is a reference to a bound variable.
 */

exports.isReferenced = isReferenced;

/**
 * Check if the input `node` is an `Identifier` and `isReferenced`.
 */

exports.isReferencedIdentifier = isReferencedIdentifier;

/**
 * Check if the input `name` is a valid identifier name
 * and isn't a reserved word.
 */

exports.isValidIdentifier = isValidIdentifier;

/**
 * Description
 */

exports.isLet = isLet;

/**
 * Description
 */

exports.isBlockScoped = isBlockScoped;

/**
 * Description
 */

exports.isVar = isVar;

/**
 * Description
 */

exports.isSpecifierDefault = isSpecifierDefault;

/**
 * Description
 */

exports.isScope = isScope;

/**
 * Description
 */

exports.isImmutable = isImmutable;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var _esutils = require("esutils");

var _esutils2 = _interopRequireDefault(_esutils);

var _index = require("./index");

var t = _interopRequireWildcard(_index);

function isReferenced(node, parent) {
  switch (parent.type) {
    // yes: PARENT[NODE]
    // yes: NODE.child
    // no: parent.CHILD
    case "MemberExpression":
      if (parent.property === node && parent.computed) {
        return true;
      } else if (parent.object === node) {
        return true;
      } else {
        return false;
      }

    // no: new.NODE
    // no: NODE.target
    case "MetaProperty":
      return false;

    // yes: { [NODE]: "" }
    // yes: { NODE }
    // no: { NODE: "" }
    case "Property":
      if (parent.key === node) {
        return parent.computed;
      }

    // no: var NODE = init;
    // yes: var id = NODE;
    case "VariableDeclarator":
      return parent.id !== node;

    // no: function NODE() {}
    // no: function foo(NODE) {}
    case "ArrowFunctionExpression":
    case "FunctionDeclaration":
    case "FunctionExpression":
      var _arr = parent.params;

      for (var _i = 0; _i < _arr.length; _i++) {
        var param = _arr[_i];
        if (param === node) return false;
      }

      return parent.id !== node;

    // no: export { foo as NODE };
    // yes: export { NODE as foo };
    // no: export { NODE as foo } from "foo";
    case "ExportSpecifier":
      if (parent.source) {
        return false;
      } else {
        return parent.local === node;
      }

    // no: import NODE from "foo";
    case "ImportDefaultSpecifier":
      return false;

    // no: import * as NODE from "foo";
    case "ImportNamespaceSpecifier":
      return false;

    // no: import { NODE as foo } from "foo";
    // no: import { foo as NODE } from "foo";
    case "ImportSpecifier":
      return false;

    // no: class NODE {}
    case "ClassDeclaration":
    case "ClassExpression":
      return parent.id !== node;

    // yes: class { [NODE](){} }
    case "MethodDefinition":
      return parent.key === node && parent.computed;

    // no: NODE: for (;;) {}
    case "LabeledStatement":
      return false;

    // no: try {} catch (NODE) {}
    case "CatchClause":
      return parent.param !== node;

    // no: function foo(...NODE) {}
    case "RestElement":
      return false;

    // no: [NODE = foo] = [];
    // yes: [foo = NODE] = [];
    case "AssignmentPattern":
      return parent.right === node;

    // no: [NODE] = [];
    // no: ({ NODE }) = [];
    case "ObjectPattern":
    case "ArrayPattern":
      return false;

    // no: import NODE from "bar";
    case "ImportSpecifier":
      return false;

    // no: import * as NODE from "foo";
    case "ImportNamespaceSpecifier":
      return false;
  }

  return true;
}

function isReferencedIdentifier(node, parent, opts) {
  return (t.isIdentifier(node, opts) || t.isJSXIdentifier(node, opts)) && t.isReferenced(node, parent);
}

function isValidIdentifier(name) {
  if (typeof name !== "string" || _esutils2["default"].keyword.isReservedWordES6(name, true)) {
    return false;
  } else {
    return _esutils2["default"].keyword.isIdentifierNameES6(name);
  }
}

function isLet(node) {
  return t.isVariableDeclaration(node) && (node.kind !== "var" || node._let);
}

function isBlockScoped(node) {
  return t.isFunctionDeclaration(node) || t.isClassDeclaration(node) || t.isLet(node);
}

function isVar(node) {
  return t.isVariableDeclaration(node, { kind: "var" }) && !node._let;
}

function isSpecifierDefault(specifier) {
  return t.isImportDefaultSpecifier(specifier) || t.isExportDefaultSpecifier(specifier) || t.isIdentifier(specifier.imported || specifier.exported, { name: "default" });
}

function isScope(node, parent) {
  if (t.isBlockStatement(node) && t.isFunction(parent, { body: node })) {
    return false;
  }

  return t.isScopable(node);
}

function isImmutable(node) {
  if (t.isType(node.type, "Immutable")) return true;

  if (t.isLiteral(node)) {
    if (node.regex) {
      // regexes are mutable
      return false;
    } else {
      // immutable!
      return true;
    }
  } else if (t.isIdentifier(node)) {
    if (node.name === "undefined") {
      // immutable!
      return true;
    } else {
      // no idea...
      return false;
    }
  }

  return false;
}
},{"./index":169,"esutils":314}],172:[function(require,module,exports){
module.exports={
  "ArrayExpression":           ["elements"],
  "ArrayPattern":              ["elements", "typeAnnotation"],
  "ArrowFunctionExpression":   ["params", "body", "returnType"],
  "AssignmentExpression":      ["left", "right"],
  "AssignmentPattern":         ["left", "right"],
  "AwaitExpression":           ["argument"],
  "BinaryExpression":          ["left", "right"],
  "BindExpression":            ["object", "callee"],
  "BlockStatement":            ["body"],
  "BreakStatement":            ["label"],
  "CallExpression":            ["callee", "arguments"],
  "CatchClause":               ["param", "body"],
  "ClassBody":                 ["body"],
  "ClassDeclaration":          ["id", "body", "superClass", "typeParameters", "superTypeParameters", "implements", "decorators"],
  "ClassExpression":           ["id", "body", "superClass", "typeParameters", "superTypeParameters", "implements", "decorators"],
  "ComprehensionBlock":        ["left", "right", "body"],
  "ComprehensionExpression":   ["filter", "blocks", "body"],
  "ConditionalExpression":     ["test", "consequent", "alternate"],
  "ContinueStatement":         ["label"],
  "Decorator":                 ["expression"],
  "DebuggerStatement":         [],
  "DoWhileStatement":          ["body", "test"],
  "DoExpression":              ["body"],
  "EmptyStatement":            [],
  "ExpressionStatement":       ["expression"],
  "File":                      ["program"],
  "ForInStatement":            ["left", "right", "body"],
  "ForOfStatement":            ["left", "right", "body"],
  "ForStatement":              ["init", "test", "update", "body"],
  "FunctionDeclaration":       ["id", "params", "body", "returnType", "typeParameters"],
  "FunctionExpression":        ["id", "params", "body", "returnType", "typeParameters"],
  "Identifier":                ["typeAnnotation"],
  "IfStatement":               ["test", "consequent", "alternate"],
  "ImportDefaultSpecifier":    ["local"],
  "ImportNamespaceSpecifier":  ["local"],
  "ImportDeclaration":         ["specifiers", "source"],
  "ImportSpecifier":           ["imported", "local"],
  "LabeledStatement":          ["label", "body"],
  "Literal":                   [],
  "LogicalExpression":         ["left", "right"],
  "MemberExpression":          ["object", "property"],
  "MetaProperty":              ["meta", "property"],
  "MethodDefinition":          ["key", "value", "decorators"],
  "NewExpression":             ["callee", "arguments"],
  "ObjectExpression":          ["properties"],
  "ObjectPattern":             ["properties", "typeAnnotation"],
  "Program":                   ["body"],
  "Property":                  ["key", "value", "decorators"],
  "RestElement":               ["argument", "typeAnnotation"],
  "ReturnStatement":           ["argument"],
  "SequenceExpression":        ["expressions"],
  "SpreadElement":             ["argument"],
  "SpreadProperty":            ["argument"],
  "Super":                     [],
  "SwitchCase":                ["test", "consequent"],
  "SwitchStatement":           ["discriminant", "cases"],
  "TaggedTemplateExpression":  ["tag", "quasi"],
  "TemplateElement":           [],
  "TemplateLiteral":           ["quasis", "expressions"],
  "ThisExpression":            [],
  "ThrowStatement":            ["argument"],
  "TryStatement":              ["block", "handlers", "handler", "guardedHandlers", "finalizer"],
  "UnaryExpression":           ["argument"],
  "UpdateExpression":          ["argument"],
  "VariableDeclaration":       ["declarations"],
  "VariableDeclarator":        ["id", "init"],
  "WhileStatement":            ["test", "body"],
  "WithStatement":             ["object", "body"],
  "YieldExpression":           ["argument"],

  "ExportAllDeclaration":       ["source", "exported"],
  "ExportDefaultDeclaration":   ["declaration"],
  "ExportNamedDeclaration":     ["declaration", "specifiers", "source"],
  "ExportDefaultSpecifier":     ["exported"],
  "ExportNamespaceSpecifier":   ["exported"],
  "ExportSpecifier":            ["local", "exported"],

  "AnyTypeAnnotation":           [],
  "ArrayTypeAnnotation":         ["elementType"],
  "BooleanTypeAnnotation":       [],
  "ClassImplements":             ["id", "typeParameters"],
  "ClassProperty":               ["key", "value", "typeAnnotation", "decorators"],
  "DeclareClass":                ["id", "typeParameters", "extends", "body"],
  "DeclareFunction":             ["id"],
  "DeclareModule":               ["id", "body"],
  "DeclareVariable":             ["id"],
  "FunctionTypeAnnotation":      ["typeParameters", "params", "rest", "returnType"],
  "FunctionTypeParam":           ["name", "typeAnnotation"],
  "GenericTypeAnnotation":       ["id", "typeParameters"],
  "InterfaceExtends":            ["id", "typeParameters"],
  "InterfaceDeclaration":        ["id", "typeParameters", "extends", "body"],
  "IntersectionTypeAnnotation":  ["types"],
  "NullableTypeAnnotation":      ["typeAnnotation"],
  "NumberTypeAnnotation":        [],
  "StringLiteralTypeAnnotation": [],
  "StringTypeAnnotation":        [],
  "TupleTypeAnnotation":         ["types"],
  "TypeofTypeAnnotation":        ["argument"],
  "TypeAlias":                   ["id", "typeParameters", "right"],
  "TypeAnnotation":              ["typeAnnotation"],
  "TypeCastExpression":          ["expression", "typeAnnotation"],
  "TypeParameterDeclaration":    ["params"],
  "TypeParameterInstantiation":  ["params"],
  "ObjectTypeAnnotation":        ["properties", "indexers", "callProperties"],
  "ObjectTypeCallProperty":      ["value"],
  "ObjectTypeIndexer":           ["id", "key", "value"],
  "ObjectTypeProperty":          ["key", "value"],
  "QualifiedTypeIdentifier":     ["id", "qualification"],
  "UnionTypeAnnotation":         ["types"],
  "VoidTypeAnnotation":          [],

  "JSXAttribute":              ["name", "value"],
  "JSXClosingElement":         ["name"],
  "JSXElement":                ["openingElement", "closingElement", "children"],
  "JSXEmptyExpression":        [],
  "JSXExpressionContainer":    ["expression"],
  "JSXIdentifier":             [],
  "JSXMemberExpression":       ["object", "property"],
  "JSXNamespacedName":         ["namespace", "name"],
  "JSXOpeningElement":         ["name", "attributes"],
  "JSXSpreadAttribute":        ["argument"]
}

},{}],173:[function(require,module,exports){
(function (process,__dirname){
"use strict";

exports.__esModule = true;
exports.canCompile = canCompile;
exports.resolve = resolve;
exports.resolveRelative = resolveRelative;
exports.list = list;
exports.regexify = regexify;
exports.arrayify = arrayify;
exports.booleanify = booleanify;
exports.shouldIgnore = shouldIgnore;

//

exports.template = template;
exports.parseTemplate = parseTemplate;

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj["default"] = obj; return newObj; } }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

require("./patch");

var _lodashStringEscapeRegExp = require("lodash/string/escapeRegExp");

var _lodashStringEscapeRegExp2 = _interopRequireDefault(_lodashStringEscapeRegExp);

var _lodashStringStartsWith = require("lodash/string/startsWith");

var _lodashStringStartsWith2 = _interopRequireDefault(_lodashStringStartsWith);

var _lodashLangCloneDeep = require("lodash/lang/cloneDeep");

var _lodashLangCloneDeep2 = _interopRequireDefault(_lodashLangCloneDeep);

var _lodashLangIsBoolean = require("lodash/lang/isBoolean");

var _lodashLangIsBoolean2 = _interopRequireDefault(_lodashLangIsBoolean);

var _messages = require("./messages");

var messages = _interopRequireWildcard(_messages);

var _minimatch = require("minimatch");

var _minimatch2 = _interopRequireDefault(_minimatch);

var _lodashCollectionContains = require("lodash/collection/contains");

var _lodashCollectionContains2 = _interopRequireDefault(_lodashCollectionContains);

var _traversal = require("./traversal");

var _traversal2 = _interopRequireDefault(_traversal);

var _lodashLangIsString = require("lodash/lang/isString");

var _lodashLangIsString2 = _interopRequireDefault(_lodashLangIsString);

var _lodashLangIsRegExp = require("lodash/lang/isRegExp");

var _lodashLangIsRegExp2 = _interopRequireDefault(_lodashLangIsRegExp);

var _module2 = require("module");

var _module3 = _interopRequireDefault(_module2);

var _lodashLangIsEmpty = require("lodash/lang/isEmpty");

var _lodashLangIsEmpty2 = _interopRequireDefault(_lodashLangIsEmpty);

var _helpersParse = require("./helpers/parse");

var _helpersParse2 = _interopRequireDefault(_helpersParse);

var _path = require("path");

var _path2 = _interopRequireDefault(_path);

var _lodashObjectHas = require("lodash/object/has");

var _lodashObjectHas2 = _interopRequireDefault(_lodashObjectHas);

var _fs = require("fs");

var _fs2 = _interopRequireDefault(_fs);

var _types = require("./types");

var t = _interopRequireWildcard(_types);

var _slash = require("slash");

var _slash2 = _interopRequireDefault(_slash);

var _util = require("util");

exports.inherits = _util.inherits;
exports.inspect = _util.inspect;

function canCompile(filename, altExts) {
  var exts = altExts || canCompile.EXTENSIONS;
  var ext = _path2["default"].extname(filename);
  return (0, _lodashCollectionContains2["default"])(exts, ext);
}

canCompile.EXTENSIONS = [".js", ".jsx", ".es6", ".es"];

function resolve(loc) {
  try {
    return require.resolve(loc);
  } catch (err) {
    return null;
  }
}

var relativeMod;

function resolveRelative(loc) {
  // we're in the browser, probably
  if (typeof _module3["default"] === "object") return null;

  if (!relativeMod) {
    relativeMod = new _module3["default"]();
    relativeMod.paths = _module3["default"]._nodeModulePaths(process.cwd());
  }

  try {
    return _module3["default"]._resolveFilename(loc, relativeMod);
  } catch (err) {
    return null;
  }
}

function list(val) {
  if (!val) {
    return [];
  } else if (Array.isArray(val)) {
    return val;
  } else if (typeof val === "string") {
    return val.split(",");
  } else {
    return [val];
  }
}

function regexify(val) {
  if (!val) return new RegExp(/.^/);

  if (Array.isArray(val)) val = new RegExp(val.map(_lodashStringEscapeRegExp2["default"]).join("|"), "i");

  if ((0, _lodashLangIsString2["default"])(val)) {
    // normalise path separators
    val = (0, _slash2["default"])(val);

    // remove starting wildcards or relative separator if present
    if ((0, _lodashStringStartsWith2["default"])(val, "./") || (0, _lodashStringStartsWith2["default"])(val, "*/")) val = val.slice(2);
    if ((0, _lodashStringStartsWith2["default"])(val, "**/")) val = val.slice(3);

    var regex = _minimatch2["default"].makeRe(val, { nocase: true });
    return new RegExp(regex.source.slice(1, -1), "i");
  }

  if ((0, _lodashLangIsRegExp2["default"])(val)) return val;

  throw new TypeError("illegal type for regexify");
}

function arrayify(val, mapFn) {
  if (!val) return [];
  if ((0, _lodashLangIsBoolean2["default"])(val)) return arrayify([val], mapFn);
  if ((0, _lodashLangIsString2["default"])(val)) return arrayify(list(val), mapFn);

  if (Array.isArray(val)) {
    if (mapFn) val = val.map(mapFn);
    return val;
  }

  return [val];
}

function booleanify(val) {
  if (val === "true") return true;
  if (val === "false") return false;
  return val;
}

function shouldIgnore(filename, ignore, only) {
  filename = (0, _slash2["default"])(filename);

  if (only.length) {
    var _arr = only;

    for (var _i = 0; _i < _arr.length; _i++) {
      var pattern = _arr[_i];
      if (pattern.test(filename)) return false;
    }
    return true;
  } else if (ignore.length) {
    var _arr2 = ignore;

    for (var _i2 = 0; _i2 < _arr2.length; _i2++) {
      var pattern = _arr2[_i2];
      if (pattern.test(filename)) return true;
    }
  }

  return false;
}

var templateVisitor = {
  enter: function enter(node, parent, scope, nodes) {
    if (t.isExpressionStatement(node)) {
      node = node.expression;
    }

    if (t.isIdentifier(node) && (0, _lodashObjectHas2["default"])(nodes, node.name)) {
      this.skip();
      this.replaceInline(nodes[node.name]);
    }
  }
};
function template(name, nodes, keepExpression) {
  var ast = exports.templates[name];
  if (!ast) throw new ReferenceError("unknown template " + name);

  if (nodes === true) {
    keepExpression = true;
    nodes = null;
  }

  ast = (0, _lodashLangCloneDeep2["default"])(ast);

  if (!(0, _lodashLangIsEmpty2["default"])(nodes)) {
    (0, _traversal2["default"])(ast, templateVisitor, null, nodes);
  }

  if (ast.body.length > 1) return ast.body;

  var node = ast.body[0];

  if (!keepExpression && t.isExpressionStatement(node)) {
    return node.expression;
  } else {
    return node;
  }
}

function parseTemplate(loc, code) {
  var ast = (0, _helpersParse2["default"])(code, { filename: loc, looseModules: true }).program;
  ast = _traversal2["default"].removeProperties(ast);
  return ast;
}

function loadTemplates() {
  var templates = {};

  var templatesLoc = _path2["default"].join(__dirname, "transformation/templates");
  if (!_fs2["default"].existsSync(templatesLoc)) {
    throw new ReferenceError(messages.get("missingTemplatesDirectory"));
  }

  var _arr3 = _fs2["default"].readdirSync(templatesLoc);

  for (var _i3 = 0; _i3 < _arr3.length; _i3++) {
    var name = _arr3[_i3];
    if (name[0] === ".") return;

    var key = _path2["default"].basename(name, _path2["default"].extname(name));
    var loc = _path2["default"].join(templatesLoc, name);
    var code = _fs2["default"].readFileSync(loc, "utf8");

    templates[key] = parseTemplate(loc, code);
  }

  return templates;
}

try {
  exports.templates = require("../../templates.json");
} catch (err) {
  if (err.code !== "MODULE_NOT_FOUND") throw err;
  exports.templates = loadTemplates();
}
}).call(this,require('_process'),"/lib/babel")
},{"../../templates.json":498,"./helpers/parse":46,"./messages":47,"./patch":48,"./traversal":157,"./types":169,"_process":200,"fs":189,"lodash/collection/contains":329,"lodash/lang/cloneDeep":403,"lodash/lang/isBoolean":406,"lodash/lang/isEmpty":407,"lodash/lang/isRegExp":413,"lodash/lang/isString":414,"lodash/object/has":420,"lodash/string/escapeRegExp":425,"lodash/string/startsWith":426,"minimatch":430,"module":189,"path":199,"slash":482,"util":216}],174:[function(require,module,exports){
'use strict';

module.exports = function(acorn) {
  var tt = acorn.tokTypes;
  var tc = acorn.tokContexts;

  tc.j_oTag = new acorn.TokContext('<tag', false);
  tc.j_cTag = new acorn.TokContext('</tag', false);
  tc.j_expr = new acorn.TokContext('<tag>...</tag>', true, true);

  tt.jsxName = new acorn.TokenType('jsxName');
  tt.jsxText = new acorn.TokenType('jsxText', {beforeExpr: true});
  tt.jsxTagStart = new acorn.TokenType('jsxTagStart');
  tt.jsxTagEnd = new acorn.TokenType('jsxTagEnd');

  tt.jsxTagStart.updateContext = function() {
    this.context.push(tc.j_expr); // treat as beginning of JSX expression
    this.context.push(tc.j_oTag); // start opening tag context
    this.exprAllowed = false;
  };
  tt.jsxTagEnd.updateContext = function(prevType) {
    var out = this.context.pop();
    if (out === tc.j_oTag && prevType === tt.slash || out === tc.j_cTag) {
      this.context.pop();
      this.exprAllowed = this.curContext() === tc.j_expr;
    } else {
      this.exprAllowed = true;
    }
  };

  var pp = acorn.Parser.prototype;

  // Reads inline JSX contents token.

  pp.jsx_readToken = function() {
    var out = '', chunkStart = this.pos;
    for (;;) {
      if (this.pos >= this.input.length)
        this.raise(this.start, 'Unterminated JSX contents');
      var ch = this.input.charCodeAt(this.pos);

      switch (ch) {
      case 60: // '<'
      case 123: // '{'
        if (this.pos === this.start) {
          if (ch === 60 && this.exprAllowed) {
            ++this.pos;
            return this.finishToken(tt.jsxTagStart);
          }
          return this.getTokenFromCode(ch);
        }
        out += this.input.slice(chunkStart, this.pos);
        return this.finishToken(tt.jsxText, out);

      case 38: // '&'
        out += this.input.slice(chunkStart, this.pos);
        out += this.jsx_readEntity();
        chunkStart = this.pos;
        break;

      default:
        if (acorn.isNewLine(ch)) {
          out += this.input.slice(chunkStart, this.pos);
          ++this.pos;
          if (ch === 13 && this.input.charCodeAt(this.pos) === 10) {
            ++this.pos;
            out += '\n';
          } else {
            out += String.fromCharCode(ch);
          }
          if (this.options.locations) {
            ++this.curLine;
            this.lineStart = this.pos;
          }
          chunkStart = this.pos;
        } else {
          ++this.pos;
        }
      }
    }
  };

  pp.jsx_readString = function(quote) {
    var out = '', chunkStart = ++this.pos;
    for (;;) {
      if (this.pos >= this.input.length)
        this.raise(this.start, 'Unterminated string constant');
      var ch = this.input.charCodeAt(this.pos);
      if (ch === quote) break;
      if (ch === 38) { // '&'
        out += this.input.slice(chunkStart, this.pos);
        out += this.jsx_readEntity();
        chunkStart = this.pos;
      } else {
        ++this.pos;
      }
    }
    out += this.input.slice(chunkStart, this.pos++);
    return this.finishToken(tt.string, out);
  };

  var XHTMLEntities = {
    quot: '\u0022',
    amp: '&',
    apos: '\u0027',
    lt: '<',
    gt: '>',
    nbsp: '\u00A0',
    iexcl: '\u00A1',
    cent: '\u00A2',
    pound: '\u00A3',
    curren: '\u00A4',
    yen: '\u00A5',
    brvbar: '\u00A6',
    sect: '\u00A7',
    uml: '\u00A8',
    copy: '\u00A9',
    ordf: '\u00AA',
    laquo: '\u00AB',
    not: '\u00AC',
    shy: '\u00AD',
    reg: '\u00AE',
    macr: '\u00AF',
    deg: '\u00B0',
    plusmn: '\u00B1',
    sup2: '\u00B2',
    sup3: '\u00B3',
    acute: '\u00B4',
    micro: '\u00B5',
    para: '\u00B6',
    middot: '\u00B7',
    cedil: '\u00B8',
    sup1: '\u00B9',
    ordm: '\u00BA',
    raquo: '\u00BB',
    frac14: '\u00BC',
    frac12: '\u00BD',
    frac34: '\u00BE',
    iquest: '\u00BF',
    Agrave: '\u00C0',
    Aacute: '\u00C1',
    Acirc: '\u00C2',
    Atilde: '\u00C3',
    Auml: '\u00C4',
    Aring: '\u00C5',
    AElig: '\u00C6',
    Ccedil: '\u00C7',
    Egrave: '\u00C8',
    Eacute: '\u00C9',
    Ecirc: '\u00CA',
    Euml: '\u00CB',
    Igrave: '\u00CC',
    Iacute: '\u00CD',
    Icirc: '\u00CE',
    Iuml: '\u00CF',
    ETH: '\u00D0',
    Ntilde: '\u00D1',
    Ograve: '\u00D2',
    Oacute: '\u00D3',
    Ocirc: '\u00D4',
    Otilde: '\u00D5',
    Ouml: '\u00D6',
    times: '\u00D7',
    Oslash: '\u00D8',
    Ugrave: '\u00D9',
    Uacute: '\u00DA',
    Ucirc: '\u00DB',
    Uuml: '\u00DC',
    Yacute: '\u00DD',
    THORN: '\u00DE',
    szlig: '\u00DF',
    agrave: '\u00E0',
    aacute: '\u00E1',
    acirc: '\u00E2',
    atilde: '\u00E3',
    auml: '\u00E4',
    aring: '\u00E5',
    aelig: '\u00E6',
    ccedil: '\u00E7',
    egrave: '\u00E8',
    eacute: '\u00E9',
    ecirc: '\u00EA',
    euml: '\u00EB',
    igrave: '\u00EC',
    iacute: '\u00ED',
    icirc: '\u00EE',
    iuml: '\u00EF',
    eth: '\u00F0',
    ntilde: '\u00F1',
    ograve: '\u00F2',
    oacute: '\u00F3',
    ocirc: '\u00F4',
    otilde: '\u00F5',
    ouml: '\u00F6',
    divide: '\u00F7',
    oslash: '\u00F8',
    ugrave: '\u00F9',
    uacute: '\u00FA',
    ucirc: '\u00FB',
    uuml: '\u00FC',
    yacute: '\u00FD',
    thorn: '\u00FE',
    yuml: '\u00FF',
    OElig: '\u0152',
    oelig: '\u0153',
    Scaron: '\u0160',
    scaron: '\u0161',
    Yuml: '\u0178',
    fnof: '\u0192',
    circ: '\u02C6',
    tilde: '\u02DC',
    Alpha: '\u0391',
    Beta: '\u0392',
    Gamma: '\u0393',
    Delta: '\u0394',
    Epsilon: '\u0395',
    Zeta: '\u0396',
    Eta: '\u0397',
    Theta: '\u0398',
    Iota: '\u0399',
    Kappa: '\u039A',
    Lambda: '\u039B',
    Mu: '\u039C',
    Nu: '\u039D',
    Xi: '\u039E',
    Omicron: '\u039F',
    Pi: '\u03A0',
    Rho: '\u03A1',
    Sigma: '\u03A3',
    Tau: '\u03A4',
    Upsilon: '\u03A5',
    Phi: '\u03A6',
    Chi: '\u03A7',
    Psi: '\u03A8',
    Omega: '\u03A9',
    alpha: '\u03B1',
    beta: '\u03B2',
    gamma: '\u03B3',
    delta: '\u03B4',
    epsilon: '\u03B5',
    zeta: '\u03B6',
    eta: '\u03B7',
    theta: '\u03B8',
    iota: '\u03B9',
    kappa: '\u03BA',
    lambda: '\u03BB',
    mu: '\u03BC',
    nu: '\u03BD',
    xi: '\u03BE',
    omicron: '\u03BF',
    pi: '\u03C0',
    rho: '\u03C1',
    sigmaf: '\u03C2',
    sigma: '\u03C3',
    tau: '\u03C4',
    upsilon: '\u03C5',
    phi: '\u03C6',
    chi: '\u03C7',
    psi: '\u03C8',
    omega: '\u03C9',
    thetasym: '\u03D1',
    upsih: '\u03D2',
    piv: '\u03D6',
    ensp: '\u2002',
    emsp: '\u2003',
    thinsp: '\u2009',
    zwnj: '\u200C',
    zwj: '\u200D',
    lrm: '\u200E',
    rlm: '\u200F',
    ndash: '\u2013',
    mdash: '\u2014',
    lsquo: '\u2018',
    rsquo: '\u2019',
    sbquo: '\u201A',
    ldquo: '\u201C',
    rdquo: '\u201D',
    bdquo: '\u201E',
    dagger: '\u2020',
    Dagger: '\u2021',
    bull: '\u2022',
    hellip: '\u2026',
    permil: '\u2030',
    prime: '\u2032',
    Prime: '\u2033',
    lsaquo: '\u2039',
    rsaquo: '\u203A',
    oline: '\u203E',
    frasl: '\u2044',
    euro: '\u20AC',
    image: '\u2111',
    weierp: '\u2118',
    real: '\u211C',
    trade: '\u2122',
    alefsym: '\u2135',
    larr: '\u2190',
    uarr: '\u2191',
    rarr: '\u2192',
    darr: '\u2193',
    harr: '\u2194',
    crarr: '\u21B5',
    lArr: '\u21D0',
    uArr: '\u21D1',
    rArr: '\u21D2',
    dArr: '\u21D3',
    hArr: '\u21D4',
    forall: '\u2200',
    part: '\u2202',
    exist: '\u2203',
    empty: '\u2205',
    nabla: '\u2207',
    isin: '\u2208',
    notin: '\u2209',
    ni: '\u220B',
    prod: '\u220F',
    sum: '\u2211',
    minus: '\u2212',
    lowast: '\u2217',
    radic: '\u221A',
    prop: '\u221D',
    infin: '\u221E',
    ang: '\u2220',
    and: '\u2227',
    or: '\u2228',
    cap: '\u2229',
    cup: '\u222A',
    'int': '\u222B',
    there4: '\u2234',
    sim: '\u223C',
    cong: '\u2245',
    asymp: '\u2248',
    ne: '\u2260',
    equiv: '\u2261',
    le: '\u2264',
    ge: '\u2265',
    sub: '\u2282',
    sup: '\u2283',
    nsub: '\u2284',
    sube: '\u2286',
    supe: '\u2287',
    oplus: '\u2295',
    otimes: '\u2297',
    perp: '\u22A5',
    sdot: '\u22C5',
    lceil: '\u2308',
    rceil: '\u2309',
    lfloor: '\u230A',
    rfloor: '\u230B',
    lang: '\u2329',
    rang: '\u232A',
    loz: '\u25CA',
    spades: '\u2660',
    clubs: '\u2663',
    hearts: '\u2665',
    diams: '\u2666'
  };

  var hexNumber = /^[\da-fA-F]+$/;
  var decimalNumber = /^\d+$/;

  pp.jsx_readEntity = function() {
    var str = '', count = 0, entity;
    var ch = this.input[this.pos];
    if (ch !== '&')
      this.raise(this.pos, 'Entity must start with an ampersand');
    var startPos = ++this.pos;
    while (this.pos < this.input.length && count++ < 10) {
      ch = this.input[this.pos++];
      if (ch === ';') {
        if (str[0] === '#') {
          if (str[1] === 'x') {
            str = str.substr(2);
            if (hexNumber.test(str))
              entity = String.fromCharCode(parseInt(str, 16));
          } else {
            str = str.substr(1);
            if (decimalNumber.test(str))
              entity = String.fromCharCode(parseInt(str, 10));
          }
        } else {
          entity = XHTMLEntities[str];
        }
        break;
      }
      str += ch;
    }
    if (!entity) {
      this.pos = startPos;
      return '&';
    }
    return entity;
  };


  // Read a JSX identifier (valid tag or attribute name).
  //
  // Optimized version since JSX identifiers can't contain
  // escape characters and so can be read as single slice.
  // Also assumes that first character was already checked
  // by isIdentifierStart in readToken.

  pp.jsx_readWord = function() {
    var ch, start = this.pos;
    do {
      ch = this.input.charCodeAt(++this.pos);
    } while (acorn.isIdentifierChar(ch) || ch === 45); // '-'
    return this.finishToken(tt.jsxName, this.input.slice(start, this.pos));
  };

  // Transforms JSX element name to string.

  function getQualifiedJSXName(object) {
    if (object.type === 'JSXIdentifier')
      return object.name;

    if (object.type === 'JSXNamespacedName')
      return object.namespace.name + ':' + object.name.name;

    if (object.type === 'JSXMemberExpression')
      return getQualifiedJSXName(object.object) + '.' +
      getQualifiedJSXName(object.property);
  }

  // Parse next token as JSX identifier

  pp.jsx_parseIdentifier = function() {
    var node = this.startNode();
    if (this.type === tt.jsxName)
      node.name = this.value;
    else if (this.type.keyword)
      node.name = this.type.keyword;
    else
      this.unexpected();
    this.next();
    return this.finishNode(node, 'JSXIdentifier');
  };

  // Parse namespaced identifier.

  pp.jsx_parseNamespacedName = function() {
    var start = this.markPosition();
    var name = this.jsx_parseIdentifier();
    if (!this.eat(tt.colon)) return name;
    var node = this.startNodeAt(start);
    node.namespace = name;
    node.name = this.jsx_parseIdentifier();
    return this.finishNode(node, 'JSXNamespacedName');
  };

  // Parses element name in any form - namespaced, member
  // or single identifier.

  pp.jsx_parseElementName = function() {
    var start = this.markPosition();
    var node = this.jsx_parseNamespacedName();
    while (this.eat(tt.dot)) {
      var newNode = this.startNodeAt(start);
      newNode.object = node;
      newNode.property = this.jsx_parseIdentifier();
      node = this.finishNode(newNode, 'JSXMemberExpression');
    }
    return node;
  };

  // Parses any type of JSX attribute value.

  pp.jsx_parseAttributeValue = function() {
    switch (this.type) {
    case tt.braceL:
      var node = this.jsx_parseExpressionContainer();
      if (node.expression.type === 'JSXEmptyExpression')
        this.raise(node.start, 'JSX attributes must only be assigned a non-empty expression');
      return node;

    case tt.jsxTagStart:
    case tt.string:
      return this.parseExprAtom();

    default:
      this.raise(this.start, 'JSX value should be either an expression or a quoted JSX text');
    }
  };

  // JSXEmptyExpression is unique type since it doesn't actually parse anything,
  // and so it should start at the end of last read token (left brace) and finish
  // at the beginning of the next one (right brace).

  pp.jsx_parseEmptyExpression = function() {
    var tmp = this.start;
    this.start = this.lastTokEnd;
    this.lastTokEnd = tmp;

    tmp = this.startLoc;
    this.startLoc = this.lastTokEndLoc;
    this.lastTokEndLoc = tmp;

    return this.finishNode(this.startNode(), 'JSXEmptyExpression');
  };

  // Parses JSX expression enclosed into curly brackets.


  pp.jsx_parseExpressionContainer = function() {
    var node = this.startNode();
    this.next();
    node.expression = this.type === tt.braceR
      ? this.jsx_parseEmptyExpression()
      : this.parseExpression();
    this.expect(tt.braceR);
    return this.finishNode(node, 'JSXExpressionContainer');
  };

  // Parses following JSX attribute name-value pair.

  pp.jsx_parseAttribute = function() {
    var node = this.startNode();
    if (this.eat(tt.braceL)) {
      this.expect(tt.ellipsis);
      node.argument = this.parseMaybeAssign();
      this.expect(tt.braceR);
      return this.finishNode(node, 'JSXSpreadAttribute');
    }
    node.name = this.jsx_parseNamespacedName();
    node.value = this.eat(tt.eq) ? this.jsx_parseAttributeValue() : null;
    return this.finishNode(node, 'JSXAttribute');
  };

  // Parses JSX opening tag starting after '<'.

  pp.jsx_parseOpeningElementAt = function(start) {
    var node = this.startNodeAt(start);
    node.attributes = [];
    node.name = this.jsx_parseElementName();
    while (this.type !== tt.slash && this.type !== tt.jsxTagEnd)
      node.attributes.push(this.jsx_parseAttribute());
    node.selfClosing = this.eat(tt.slash);
    this.expect(tt.jsxTagEnd);
    return this.finishNode(node, 'JSXOpeningElement');
  };

  // Parses JSX closing tag starting after '</'.

  pp.jsx_parseClosingElementAt = function(start) {
    var node = this.startNodeAt(start);
    node.name = this.jsx_parseElementName();
    this.expect(tt.jsxTagEnd);
    return this.finishNode(node, 'JSXClosingElement');
  };

  // Parses entire JSX element, including it's opening tag
  // (starting after '<'), attributes, contents and closing tag.

  pp.jsx_parseElementAt = function(start) {
    var node = this.startNodeAt(start);
    var children = [];
    var openingElement = this.jsx_parseOpeningElementAt(start);
    var closingElement = null;

    if (!openingElement.selfClosing) {
      contents: for (;;) {
        switch (this.type) {
        case tt.jsxTagStart:
          start = this.markPosition();
          this.next();
          if (this.eat(tt.slash)) {
            closingElement = this.jsx_parseClosingElementAt(start);
            break contents;
          }
          children.push(this.jsx_parseElementAt(start));
          break;

        case tt.jsxText:
          children.push(this.parseExprAtom());
          break;

        case tt.braceL:
          children.push(this.jsx_parseExpressionContainer());
          break;

        default:
          this.unexpected();
        }
      }
      if (getQualifiedJSXName(closingElement.name) !== getQualifiedJSXName(openingElement.name))
        this.raise(
          closingElement.start,
          'Expected corresponding JSX closing tag for <' + getQualifiedJSXName(openingElement.name) + '>');
    }

    node.openingElement = openingElement;
    node.closingElement = closingElement;
    node.children = children;
    return this.finishNode(node, 'JSXElement');
  };

  // Parses entire JSX element from current position.

  pp.jsx_parseElement = function() {
    var start = this.markPosition();
    this.next();
    return this.jsx_parseElementAt(start);
  };

  acorn.plugins.jsx = function(instance) {
    instance.extend('parseExprAtom', function(inner) {
      return function(refShortHandDefaultPos) {
        if (this.type === tt.jsxText)
          return this.parseLiteral(this.value);
        else if (this.type === tt.jsxTagStart)
          return this.jsx_parseElement();
        else
          return inner.call(this, refShortHandDefaultPos);
      };
    });

    instance.extend('readToken', function(inner) {
      return function(code) {
        var context = this.curContext();

        if (context === tc.j_expr) return this.jsx_readToken();

        if (context === tc.j_oTag || context === tc.j_cTag) {
          if (acorn.isIdentifierStart(code)) return this.jsx_readWord();

          if (code == 62) {
            ++this.pos;
            return this.finishToken(tt.jsxTagEnd);
          }

          if ((code === 34 || code === 39) && context == tc.j_oTag)
            return this.jsx_readString(code);
        }

        if (code === 60 && this.exprAllowed) {
          ++this.pos;
          return this.finishToken(tt.jsxTagStart);
        }
        return inner.call(this, code);
      };
    });

    instance.extend('updateContext', function(inner) {
      return function(prevType) {
        if (this.type == tt.braceL) {
          var curContext = this.curContext();
          if (curContext == tc.j_oTag) this.context.push(tc.b_expr);
          else if (curContext == tc.j_expr) this.context.push(tc.b_tmpl);
          else inner.call(this, prevType);
          this.exprAllowed = true;
        } else if (this.type === tt.slash && prevType === tt.jsxTagStart) {
          this.context.length -= 2; // do not consider JSX expr -> JSX open tag -> ... anymore
          this.context.push(tc.j_cTag); // reconsider as closing tag context
          this.exprAllowed = false;
        } else {
          return inner.call(this, prevType);
        }
      };
    });
  };

  return acorn;
};

},{}],175:[function(require,module,exports){
var types = require("../lib/types");
var Type = types.Type;
var def = Type.def;
var or = Type.or;
var builtin = types.builtInTypes;
var isString = builtin.string;
var isNumber = builtin.number;
var isBoolean = builtin.boolean;
var isRegExp = builtin.RegExp;
var shared = require("../lib/shared");
var defaults = shared.defaults;
var geq = shared.geq;

// Abstract supertype of all syntactic entities that are allowed to have a
// .loc field.
def("Printable")
    .field("loc", or(
        def("SourceLocation"),
        null
    ), defaults["null"], true);

def("Node")
    .bases("Printable")
    .field("type", isString)
    .field("comments", or(
        [def("Comment")],
        null
    ), defaults["null"], true);

def("SourceLocation")
    .build("start", "end", "source")
    .field("start", def("Position"))
    .field("end", def("Position"))
    .field("source", or(isString, null), defaults["null"]);

def("Position")
    .build("line", "column")
    .field("line", geq(1))
    .field("column", geq(0));

def("Program")
    .bases("Node")
    .build("body")
    .field("body", [def("Statement")]);

def("Function")
    .bases("Node")
    .field("id", or(def("Identifier"), null), defaults["null"])
    .field("params", [def("Pattern")])
    .field("body", def("BlockStatement"));

def("Statement").bases("Node");

// The empty .build() here means that an EmptyStatement can be constructed
// (i.e. it's not abstract) but that it needs no arguments.
def("EmptyStatement").bases("Statement").build();

def("BlockStatement")
    .bases("Statement")
    .build("body")
    .field("body", [def("Statement")]);

// TODO Figure out how to silently coerce Expressions to
// ExpressionStatements where a Statement was expected.
def("ExpressionStatement")
    .bases("Statement")
    .build("expression")
    .field("expression", def("Expression"));

def("IfStatement")
    .bases("Statement")
    .build("test", "consequent", "alternate")
    .field("test", def("Expression"))
    .field("consequent", def("Statement"))
    .field("alternate", or(def("Statement"), null), defaults["null"]);

def("LabeledStatement")
    .bases("Statement")
    .build("label", "body")
    .field("label", def("Identifier"))
    .field("body", def("Statement"));

def("BreakStatement")
    .bases("Statement")
    .build("label")
    .field("label", or(def("Identifier"), null), defaults["null"]);

def("ContinueStatement")
    .bases("Statement")
    .build("label")
    .field("label", or(def("Identifier"), null), defaults["null"]);

def("WithStatement")
    .bases("Statement")
    .build("object", "body")
    .field("object", def("Expression"))
    .field("body", def("Statement"));

def("SwitchStatement")
    .bases("Statement")
    .build("discriminant", "cases", "lexical")
    .field("discriminant", def("Expression"))
    .field("cases", [def("SwitchCase")])
    .field("lexical", isBoolean, defaults["false"]);

def("ReturnStatement")
    .bases("Statement")
    .build("argument")
    .field("argument", or(def("Expression"), null));

def("ThrowStatement")
    .bases("Statement")
    .build("argument")
    .field("argument", def("Expression"));

def("TryStatement")
    .bases("Statement")
    .build("block", "handler", "finalizer")
    .field("block", def("BlockStatement"))
    .field("handler", or(def("CatchClause"), null), function() {
        return this.handlers && this.handlers[0] || null;
    })
    .field("handlers", [def("CatchClause")], function() {
        return this.handler ? [this.handler] : [];
    }, true) // Indicates this field is hidden from eachField iteration.
    .field("guardedHandlers", [def("CatchClause")], defaults.emptyArray)
    .field("finalizer", or(def("BlockStatement"), null), defaults["null"]);

def("CatchClause")
    .bases("Node")
    .build("param", "guard", "body")
    .field("param", def("Pattern"))
    .field("guard", or(def("Expression"), null), defaults["null"])
    .field("body", def("BlockStatement"));

def("WhileStatement")
    .bases("Statement")
    .build("test", "body")
    .field("test", def("Expression"))
    .field("body", def("Statement"));

def("DoWhileStatement")
    .bases("Statement")
    .build("body", "test")
    .field("body", def("Statement"))
    .field("test", def("Expression"));

def("ForStatement")
    .bases("Statement")
    .build("init", "test", "update", "body")
    .field("init", or(
        def("VariableDeclaration"),
        def("Expression"),
        null))
    .field("test", or(def("Expression"), null))
    .field("update", or(def("Expression"), null))
    .field("body", def("Statement"));

def("ForInStatement")
    .bases("Statement")
    .build("left", "right", "body", "each")
    .field("left", or(
        def("VariableDeclaration"),
        def("Expression")))
    .field("right", def("Expression"))
    .field("body", def("Statement"))
    .field("each", isBoolean);

def("DebuggerStatement").bases("Statement").build();

def("Declaration").bases("Statement");

def("FunctionDeclaration")
    .bases("Function", "Declaration")
    .build("id", "params", "body")
    .field("id", def("Identifier"));

def("FunctionExpression")
    .bases("Function", "Expression")
    .build("id", "params", "body");

def("VariableDeclaration")
    .bases("Declaration")
    .build("kind", "declarations")
    .field("kind", or("var", "let", "const"))
    .field("declarations", [or(
        def("VariableDeclarator"),
        def("Identifier") // TODO Esprima deviation.
    )]);

def("VariableDeclarator")
    .bases("Node")
    .build("id", "init")
    .field("id", def("Pattern"))
    .field("init", or(def("Expression"), null));

// TODO Are all Expressions really Patterns?
def("Expression").bases("Node", "Pattern");

def("ThisExpression").bases("Expression").build();

def("ArrayExpression")
    .bases("Expression")
    .build("elements")
    .field("elements", [or(def("Expression"), null)]);

def("ObjectExpression")
    .bases("Expression")
    .build("properties")
    .field("properties", [def("Property")]);

// TODO Not in the Mozilla Parser API, but used by Esprima.
def("Property")
    .bases("Node") // Want to be able to visit Property Nodes.
    .build("kind", "key", "value")
    .field("kind", or("init", "get", "set"))
    .field("key", or(def("Literal"), def("Identifier")))
    // esprima allows Pattern
    .field("value", or(def("Expression"), def("Pattern")));

def("SequenceExpression")
    .bases("Expression")
    .build("expressions")
    .field("expressions", [def("Expression")]);

var UnaryOperator = or(
    "-", "+", "!", "~",
    "typeof", "void", "delete");

def("UnaryExpression")
    .bases("Expression")
    .build("operator", "argument", "prefix")
    .field("operator", UnaryOperator)
    .field("argument", def("Expression"))
    // TODO Esprima doesn't bother with this field, presumably because
    // it's always true for unary operators.
    .field("prefix", isBoolean, defaults["true"]);

var BinaryOperator = or(
    "==", "!=", "===", "!==",
    "<", "<=", ">", ">=",
    "<<", ">>", ">>>",
    "+", "-", "*", "/", "%",
    "&", // TODO Missing from the Parser API.
    "|", "^", "in",
    "instanceof", "..");

def("BinaryExpression")
    .bases("Expression")
    .build("operator", "left", "right")
    .field("operator", BinaryOperator)
    .field("left", def("Expression"))
    .field("right", def("Expression"));

var AssignmentOperator = or(
    "=", "+=", "-=", "*=", "/=", "%=",
    "<<=", ">>=", ">>>=",
    "|=", "^=", "&=");

def("AssignmentExpression")
    .bases("Expression")
    .build("operator", "left", "right")
    .field("operator", AssignmentOperator)
    .field("left", def("Pattern"))
    .field("right", def("Expression"));

var UpdateOperator = or("++", "--");

def("UpdateExpression")
    .bases("Expression")
    .build("operator", "argument", "prefix")
    .field("operator", UpdateOperator)
    .field("argument", def("Expression"))
    .field("prefix", isBoolean);

var LogicalOperator = or("||", "&&");

def("LogicalExpression")
    .bases("Expression")
    .build("operator", "left", "right")
    .field("operator", LogicalOperator)
    .field("left", def("Expression"))
    .field("right", def("Expression"));

def("ConditionalExpression")
    .bases("Expression")
    .build("test", "consequent", "alternate")
    .field("test", def("Expression"))
    .field("consequent", def("Expression"))
    .field("alternate", def("Expression"));

def("NewExpression")
    .bases("Expression")
    .build("callee", "arguments")
    .field("callee", def("Expression"))
    // The Mozilla Parser API gives this type as [or(def("Expression"),
    // null)], but null values don't really make sense at the call site.
    // TODO Report this nonsense.
    .field("arguments", [def("Expression")]);

def("CallExpression")
    .bases("Expression")
    .build("callee", "arguments")
    .field("callee", def("Expression"))
    // See comment for NewExpression above.
    .field("arguments", [def("Expression")]);

def("MemberExpression")
    .bases("Expression")
    .build("object", "property", "computed")
    .field("object", def("Expression"))
    .field("property", or(def("Identifier"), def("Expression")))
    .field("computed", isBoolean, defaults["false"]);

def("Pattern").bases("Node");

def("ObjectPattern")
    .bases("Pattern")
    .build("properties")
    // TODO File a bug to get PropertyPattern added to the interfaces API.
    // esprima uses Property
    .field("properties", [or(def("PropertyPattern"), def("Property"))]);

def("PropertyPattern")
    .bases("Pattern")
    .build("key", "pattern")
    .field("key", or(def("Literal"), def("Identifier")))
    .field("pattern", def("Pattern"));

def("ArrayPattern")
    .bases("Pattern")
    .build("elements")
    .field("elements", [or(def("Pattern"), null)]);

def("SwitchCase")
    .bases("Node")
    .build("test", "consequent")
    .field("test", or(def("Expression"), null))
    .field("consequent", [def("Statement")]);

def("Identifier")
    // But aren't Expressions and Patterns already Nodes? TODO Report this.
    .bases("Node", "Expression", "Pattern")
    .build("name")
    .field("name", isString);

def("Literal")
    // But aren't Expressions already Nodes? TODO Report this.
    .bases("Node", "Expression")
    .build("value")
    .field("value", or(
        isString,
        isBoolean,
        null, // isNull would also work here.
        isNumber,
        isRegExp
    ))
    .field("regex", or({
        pattern: isString,
        flags: isString
    }, null), function() {
        if (!isRegExp.check(this.value))
            return null;

        var flags = "";
        if (this.value.ignoreCase) flags += "i";
        if (this.value.multiline) flags += "m";
        if (this.value.global) flags += "g";

        return {
            pattern: this.value.source,
            flags: flags
        };
    });

// Abstract (non-buildable) comment supertype. Not a Node.
def("Comment")
    .bases("Printable")
    .field("value", isString)
    // A .leading comment comes before the node, whereas a .trailing
    // comment comes after it. These two fields should not both be true,
    // but they might both be false when the comment falls inside a node
    // and the node has no children for the comment to lead or trail,
    // e.g. { /*dangling*/ }.
    .field("leading", isBoolean, defaults["true"])
    .field("trailing", isBoolean, defaults["false"]);

// Block comment. The .type really should be BlockComment rather than
// Block, but that's what we're stuck with for now.
def("Block")
    .bases("Comment")
    .build("value", /*optional:*/ "leading", "trailing");

// Single line comment. The .type really should be LineComment rather than
// Line, but that's what we're stuck with for now.
def("Line")
    .bases("Comment")
    .build("value", /*optional:*/ "leading", "trailing");

},{"../lib/shared":186,"../lib/types":187}],176:[function(require,module,exports){
require("./core");
var types = require("../lib/types");
var def = types.Type.def;
var or = types.Type.or;
var builtin = types.builtInTypes;
var isString = builtin.string;
var isBoolean = builtin.boolean;

// Note that none of these types are buildable because the Mozilla Parser
// API doesn't specify any builder functions, and nobody uses E4X anymore.

def("XMLDefaultDeclaration")
    .bases("Declaration")
    .field("namespace", def("Expression"));

def("XMLAnyName").bases("Expression");

def("XMLQualifiedIdentifier")
    .bases("Expression")
    .field("left", or(def("Identifier"), def("XMLAnyName")))
    .field("right", or(def("Identifier"), def("Expression")))
    .field("computed", isBoolean);

def("XMLFunctionQualifiedIdentifier")
    .bases("Expression")
    .field("right", or(def("Identifier"), def("Expression")))
    .field("computed", isBoolean);

def("XMLAttributeSelector")
    .bases("Expression")
    .field("attribute", def("Expression"));

def("XMLFilterExpression")
    .bases("Expression")
    .field("left", def("Expression"))
    .field("right", def("Expression"));

def("XMLElement")
    .bases("XML", "Expression")
    .field("contents", [def("XML")]);

def("XMLList")
    .bases("XML", "Expression")
    .field("contents", [def("XML")]);

def("XML").bases("Node");

def("XMLEscape")
    .bases("XML")
    .field("expression", def("Expression"));

def("XMLText")
    .bases("XML")
    .field("text", isString);

def("XMLStartTag")
    .bases("XML")
    .field("contents", [def("XML")]);

def("XMLEndTag")
    .bases("XML")
    .field("contents", [def("XML")]);

def("XMLPointTag")
    .bases("XML")
    .field("contents", [def("XML")]);

def("XMLName")
    .bases("XML")
    .field("contents", or(isString, [def("XML")]));

def("XMLAttribute")
    .bases("XML")
    .field("value", isString);

def("XMLCdata")
    .bases("XML")
    .field("contents", isString);

def("XMLComment")
    .bases("XML")
    .field("contents", isString);

def("XMLProcessingInstruction")
    .bases("XML")
    .field("target", isString)
    .field("contents", or(isString, null));

},{"../lib/types":187,"./core":175}],177:[function(require,module,exports){
require("./core");
var types = require("../lib/types");
var def = types.Type.def;
var or = types.Type.or;
var builtin = types.builtInTypes;
var isBoolean = builtin.boolean;
var isObject = builtin.object;
var isString = builtin.string;
var defaults = require("../lib/shared").defaults;

def("Function")
    .field("generator", isBoolean, defaults["false"])
    .field("expression", isBoolean, defaults["false"])
    .field("defaults", [or(def("Expression"), null)], defaults.emptyArray)
    // TODO This could be represented as a SpreadElementPattern in .params.
    .field("rest", or(def("Identifier"), null), defaults["null"]);

def("FunctionDeclaration")
    .build("id", "params", "body", "generator", "expression");

def("FunctionExpression")
    .build("id", "params", "body", "generator", "expression");

// TODO The Parser API calls this ArrowExpression, but Esprima uses
// ArrowFunctionExpression.
def("ArrowFunctionExpression")
    .bases("Function", "Expression")
    .build("params", "body", "expression")
    // The forced null value here is compatible with the overridden
    // definition of the "id" field in the Function interface.
    .field("id", null, defaults["null"])
    // Arrow function bodies are allowed to be expressions.
    .field("body", or(def("BlockStatement"), def("Expression")))
    // The current spec forbids arrow generators, so I have taken the
    // liberty of enforcing that. TODO Report this.
    .field("generator", false, defaults["false"]);

def("YieldExpression")
    .bases("Expression")
    .build("argument", "delegate")
    .field("argument", or(def("Expression"), null))
    .field("delegate", isBoolean, defaults["false"]);

def("GeneratorExpression")
    .bases("Expression")
    .build("body", "blocks", "filter")
    .field("body", def("Expression"))
    .field("blocks", [def("ComprehensionBlock")])
    .field("filter", or(def("Expression"), null));

def("ComprehensionExpression")
    .bases("Expression")
    .build("body", "blocks", "filter")
    .field("body", def("Expression"))
    .field("blocks", [def("ComprehensionBlock")])
    .field("filter", or(def("Expression"), null));

def("ComprehensionBlock")
    .bases("Node")
    .build("left", "right", "each")
    .field("left", def("Pattern"))
    .field("right", def("Expression"))
    .field("each", isBoolean);

def("ModuleSpecifier")
    .bases("Literal")
    .build("value")
    .field("value", isString);

def("Property")
    // Esprima extensions not mentioned in the Mozilla Parser API:
    .field("key", or(def("Literal"), def("Identifier"), def("Expression")))
    .field("method", isBoolean, defaults["false"])
    .field("shorthand", isBoolean, defaults["false"])
    .field("computed", isBoolean, defaults["false"]);

def("PropertyPattern")
    .field("key", or(def("Literal"), def("Identifier"), def("Expression")))
    .field("computed", isBoolean, defaults["false"]);

def("MethodDefinition")
    .bases("Declaration")
    .build("kind", "key", "value", "static")
    .field("kind", or("init", "get", "set", ""))
    .field("key", or(def("Literal"), def("Identifier"), def("Expression")))
    .field("value", def("Function"))
    .field("computed", isBoolean, defaults["false"])
    .field("static", isBoolean, defaults["false"]);

def("SpreadElement")
    .bases("Node")
    .build("argument")
    .field("argument", def("Expression"));

def("ArrayExpression")
    .field("elements", [or(def("Expression"), def("SpreadElement"), null)]);

def("NewExpression")
    .field("arguments", [or(def("Expression"), def("SpreadElement"))]);

def("CallExpression")
    .field("arguments", [or(def("Expression"), def("SpreadElement"))]);

def("SpreadElementPattern")
    .bases("Pattern")
    .build("argument")
    .field("argument", def("Pattern"));

def("ArrayPattern")
    .field("elements", [or(
        def("Pattern"),
        null,
        // used by esprima
        def("SpreadElement")
    )]);

var ClassBodyElement = or(
    def("MethodDefinition"),
    def("VariableDeclarator"),
    def("ClassPropertyDefinition"),
    def("ClassProperty")
);

def("ClassProperty")
  .bases("Declaration")
  .build("key")
  .field("key", or(def("Literal"), def("Identifier"), def("Expression")))
  .field("computed", isBoolean, defaults["false"]);

def("ClassPropertyDefinition") // static property
    .bases("Declaration")
    .build("definition")
    // Yes, Virginia, circular definitions are permitted.
    .field("definition", ClassBodyElement);

def("ClassBody")
    .bases("Declaration")
    .build("body")
    .field("body", [ClassBodyElement]);

def("ClassDeclaration")
    .bases("Declaration")
    .build("id", "body", "superClass")
    .field("id", or(def("Identifier"), null))
    .field("body", def("ClassBody"))
    .field("superClass", or(def("Expression"), null), defaults["null"]);

def("ClassExpression")
    .bases("Expression")
    .build("id", "body", "superClass")
    .field("id", or(def("Identifier"), null), defaults["null"])
    .field("body", def("ClassBody"))
    .field("superClass", or(def("Expression"), null), defaults["null"])
    .field("implements", [def("ClassImplements")], defaults.emptyArray);

def("ClassImplements")
    .bases("Node")
    .build("id")
    .field("id", def("Identifier"))
    .field("superClass", or(def("Expression"), null), defaults["null"]);

// Specifier and NamedSpecifier are abstract non-standard types that I
// introduced for definitional convenience.
def("Specifier").bases("Node");
def("NamedSpecifier")
    .bases("Specifier")
    // Note: this abstract type is intentionally not buildable.
    .field("id", def("Identifier"))
    .field("name", or(def("Identifier"), null), defaults["null"]);

// Like NamedSpecifier, except type:"ExportSpecifier" and buildable.
// export {<id [as name]>} [from ...];
def("ExportSpecifier")
    .bases("NamedSpecifier")
    .build("id", "name");

// export <*> from ...;
def("ExportBatchSpecifier")
    .bases("Specifier")
    .build();

// Like NamedSpecifier, except type:"ImportSpecifier" and buildable.
// import {<id [as name]>} from ...;
def("ImportSpecifier")
    .bases("NamedSpecifier")
    .build("id", "name");

// import <* as id> from ...;
def("ImportNamespaceSpecifier")
    .bases("Specifier")
    .build("id")
    .field("id", def("Identifier"));

// import <id> from ...;
def("ImportDefaultSpecifier")
    .bases("Specifier")
    .build("id")
    .field("id", def("Identifier"));

def("ExportDeclaration")
    .bases("Declaration")
    .build("default", "declaration", "specifiers", "source")
    .field("default", isBoolean)
    .field("declaration", or(
        def("Declaration"),
        def("Expression"), // Implies default.
        null
    ))
    .field("specifiers", [or(
        def("ExportSpecifier"),
        def("ExportBatchSpecifier")
    )], defaults.emptyArray)
    .field("source", or(
        def("Literal"),
        def("ModuleSpecifier"),
        null
    ), defaults["null"]);

def("ImportDeclaration")
    .bases("Declaration")
    .build("specifiers", "source")
    .field("specifiers", [or(
        def("ImportSpecifier"),
        def("ImportNamespaceSpecifier"),
        def("ImportDefaultSpecifier")
    )], defaults.emptyArray)
    .field("source", or(
        def("Literal"),
        def("ModuleSpecifier")
    ));

def("TaggedTemplateExpression")
    .bases("Expression")
    .field("tag", def("Expression"))
    .field("quasi", def("TemplateLiteral"));

def("TemplateLiteral")
    .bases("Expression")
    .build("quasis", "expressions")
    .field("quasis", [def("TemplateElement")])
    .field("expressions", [def("Expression")]);

def("TemplateElement")
    .bases("Node")
    .build("value", "tail")
    .field("value", {"cooked": isString, "raw": isString})
    .field("tail", isBoolean);

},{"../lib/shared":186,"../lib/types":187,"./core":175}],178:[function(require,module,exports){
require("./core");
var types = require("../lib/types");
var def = types.Type.def;
var or = types.Type.or;
var builtin = types.builtInTypes;
var isBoolean = builtin.boolean;
var defaults = require("../lib/shared").defaults;

def("Function")
    .field("async", isBoolean, defaults["false"]);

def("SpreadProperty")
    .bases("Node")
    .build("argument")
    .field("argument", def("Expression"));

def("ObjectExpression")
    .field("properties", [or(def("Property"), def("SpreadProperty"))]);

def("SpreadPropertyPattern")
    .bases("Pattern")
    .build("argument")
    .field("argument", def("Pattern"));

def("ObjectPattern")
    .field("properties", [or(
        def("PropertyPattern"),
        def("SpreadPropertyPattern"),
        // used by esprima
        def("Property"),
        def("SpreadProperty")
    )]);

def("AwaitExpression")
    .bases("Expression")
    .build("argument", "all")
    .field("argument", or(def("Expression"), null))
    .field("all", isBoolean, defaults["false"]);

},{"../lib/shared":186,"../lib/types":187,"./core":175}],179:[function(require,module,exports){
require("./core");
var types = require("../lib/types");
var def = types.Type.def;
var or = types.Type.or;
var builtin = types.builtInTypes;
var isString = builtin.string;
var isBoolean = builtin.boolean;
var defaults = require("../lib/shared").defaults;

def("JSXAttribute")
    .bases("Node")
    .build("name", "value")
    .field("name", or(def("JSXIdentifier"), def("JSXNamespacedName")))
    .field("value", or(
        def("Literal"), // attr="value"
        def("JSXExpressionContainer"), // attr={value}
        null // attr= or just attr
    ), defaults["null"]);

def("JSXIdentifier")
    .bases("Identifier")
    .build("name")
    .field("name", isString);

def("JSXNamespacedName")
    .bases("Node")
    .build("namespace", "name")
    .field("namespace", def("JSXIdentifier"))
    .field("name", def("JSXIdentifier"));

def("JSXMemberExpression")
    .bases("MemberExpression")
    .build("object", "property")
    .field("object", or(def("JSXIdentifier"), def("JSXMemberExpression")))
    .field("property", def("JSXIdentifier"))
    .field("computed", isBoolean, defaults.false);

var JSXElementName = or(
    def("JSXIdentifier"),
    def("JSXNamespacedName"),
    def("JSXMemberExpression")
);

def("JSXSpreadAttribute")
    .bases("Node")
    .build("argument")
    .field("argument", def("Expression"));

var JSXAttributes = [or(
    def("JSXAttribute"),
    def("JSXSpreadAttribute")
)];

def("JSXExpressionContainer")
    .bases("Expression")
    .build("expression")
    .field("expression", def("Expression"));

def("JSXElement")
    .bases("Expression")
    .build("openingElement", "closingElement", "children")
    .field("openingElement", def("JSXOpeningElement"))
    .field("closingElement", or(def("JSXClosingElement"), null), defaults["null"])
    .field("children", [or(
        def("JSXElement"),
        def("JSXExpressionContainer"),
        def("JSXText"),
        def("Literal") // TODO Esprima should return JSXText instead.
    )], defaults.emptyArray)
    .field("name", JSXElementName, function() {
        // Little-known fact: the `this` object inside a default function
        // is none other than the partially-built object itself, and any
        // fields initialized directly from builder function arguments
        // (like openingElement, closingElement, and children) are
        // guaranteed to be available.
        return this.openingElement.name;
    })
    .field("selfClosing", isBoolean, function() {
        return this.openingElement.selfClosing;
    })
    .field("attributes", JSXAttributes, function() {
        return this.openingElement.attributes;
    });

def("JSXOpeningElement")
    .bases("Node") // TODO Does this make sense? Can't really be an JSXElement.
    .build("name", "attributes", "selfClosing")
    .field("name", JSXElementName)
    .field("attributes", JSXAttributes, defaults.emptyArray)
    .field("selfClosing", isBoolean, defaults["false"]);

def("JSXClosingElement")
    .bases("Node") // TODO Same concern.
    .build("name")
    .field("name", JSXElementName);

def("JSXText")
    .bases("Literal")
    .build("value")
    .field("value", isString);

def("JSXEmptyExpression").bases("Expression").build();

// Type Annotations
def("Type")
  .bases("Node");

def("AnyTypeAnnotation")
  .bases("Type");

def("VoidTypeAnnotation")
  .bases("Type");

def("NumberTypeAnnotation")
  .bases("Type");

def("StringTypeAnnotation")
  .bases("Type");

def("StringLiteralTypeAnnotation")
  .bases("Type")
  .build("value", "raw")
  .field("value", isString)
  .field("raw", isString);

def("BooleanTypeAnnotation")
  .bases("Type");

def("TypeAnnotation")
  .bases("Node")
  .build("typeAnnotation")
  .field("typeAnnotation", def("Type"));

def("NullableTypeAnnotation")
  .bases("Type")
  .build("typeAnnotation")
  .field("typeAnnotation", def("Type"));

def("FunctionTypeAnnotation")
  .bases("Type")
  .build("params", "returnType", "rest", "typeParameters")
  .field("params", [def("FunctionTypeParam")])
  .field("returnType", def("Type"))
  .field("rest", or(def("FunctionTypeParam"), null))
  .field("typeParameters", or(def("TypeParameterDeclaration"), null));

def("FunctionTypeParam")
  .bases("Node")
  .build("name", "typeAnnotation", "optional")
  .field("name", def("Identifier"))
  .field("typeAnnotation", def("Type"))
  .field("optional", isBoolean);

def("ArrayTypeAnnotation")
  .bases("Type")
  .build("elementType")
  .field("elementType", def("Type"));

def("ObjectTypeAnnotation")
  .bases("Type")
  .build("properties")
  .field("properties", [def("ObjectTypeProperty")])
  .field("indexers", [def("ObjectTypeIndexer")], defaults.emptyArray)
  .field("callProperties", [def("ObjectTypeCallProperty")], defaults.emptyArray);

def("ObjectTypeProperty")
  .bases("Node")
  .build("key", "value", "optional")
  .field("key", or(def("Literal"), def("Identifier")))
  .field("value", def("Type"))
  .field("optional", isBoolean);

def("ObjectTypeIndexer")
  .bases("Node")
  .build("id", "key", "value")
  .field("id", def("Identifier"))
  .field("key", def("Type"))
  .field("value", def("Type"));

def("ObjectTypeCallProperty")
  .bases("Node")
  .build("value")
  .field("value", def("FunctionTypeAnnotation"))
  .field("static", isBoolean, false);

def("QualifiedTypeIdentifier")
  .bases("Node")
  .build("qualification", "id")
  .field("qualification", or(def("Identifier"), def("QualifiedTypeIdentifier")))
  .field("id", def("Identifier"));

def("GenericTypeAnnotation")
  .bases("Type")
  .build("id", "typeParameters")
  .field("id", or(def("Identifier"), def("QualifiedTypeIdentifier")))
  .field("typeParameters", or(def("TypeParameterInstantiation"), null));

def("MemberTypeAnnotation")
  .bases("Type")
  .build("object", "property")
  .field("object", def("Identifier"))
  .field("property", or(def("MemberTypeAnnotation"), def("GenericTypeAnnotation")));

def("UnionTypeAnnotation")
  .bases("Type")
  .build("types")
  .field("types", [def("Type")]);

def("IntersectionTypeAnnotation")
  .bases("Type")
  .build("types")
  .field("types", [def("Type")]);

def("TypeofTypeAnnotation")
  .bases("Type")
  .build("argument")
  .field("argument", def("Type"));

def("Identifier")
  .field("typeAnnotation", or(def("TypeAnnotation"), null), defaults["null"]);

def("TypeParameterDeclaration")
  .bases("Node")
  .build("params")
  .field("params", [def("Identifier")]);

def("TypeParameterInstantiation")
  .bases("Node")
  .build("params")
  .field("params", [def("Type")]);

def("Function")
  .field("returnType", or(def("TypeAnnotation"), null), defaults["null"])
  .field("typeParameters", or(def("TypeParameterDeclaration"), null), defaults["null"]);

def("ClassProperty")
  .build("key", "typeAnnotation")
  .field("typeAnnotation", def("TypeAnnotation"))
  .field("static", isBoolean, false);

def("ClassImplements")
  .field("typeParameters", or(def("TypeParameterInstantiation"), null), defaults["null"]);

def("InterfaceDeclaration")
  .bases("Statement")
  .build("id", "body", "extends")
  .field("id", def("Identifier"))
  .field("typeParameters", or(def("TypeParameterDeclaration"), null), defaults["null"])
  .field("body", def("ObjectTypeAnnotation"))
  .field("extends", [def("InterfaceExtends")]);

def("InterfaceExtends")
  .bases("Node")
  .build("id")
  .field("id", def("Identifier"))
  .field("typeParameters", or(def("TypeParameterInstantiation"), null));

def("TypeAlias")
  .bases("Statement")
  .build("id", "typeParameters", "right")
  .field("id", def("Identifier"))
  .field("typeParameters", or(def("TypeParameterDeclaration"), null))
  .field("right", def("Type"));

def("TypeCastExpression")
  .bases("Expression")
  .build("expression", "typeAnnotation")
  .field("expression", def("Expression"))
  .field("typeAnnotation", def("TypeAnnotation"));

def("TupleTypeAnnotation")
  .bases("Type")
  .build("types")
  .field("types", [def("Type")]);

def("DeclareVariable")
  .bases("Statement")
  .build("id")
  .field("id", def("Identifier"));

def("DeclareFunction")
  .bases("Statement")
  .build("id")
  .field("id", def("Identifier"));

def("DeclareClass")
  .bases("InterfaceDeclaration")
  .build("id");

def("DeclareModule")
  .bases("Statement")
  .build("id", "body")
  .field("id", or(def("Identifier"), def("Literal")))
  .field("body", def("BlockStatement"));

},{"../lib/shared":186,"../lib/types":187,"./core":175}],180:[function(require,module,exports){
require("./core");
var types = require("../lib/types");
var def = types.Type.def;
var or = types.Type.or;
var geq = require("../lib/shared").geq;

def("Function")
    // SpiderMonkey allows expression closures: function(x) x+1
    .field("body", or(def("BlockStatement"), def("Expression")));

def("ForOfStatement")
    .bases("Statement")
    .build("left", "right", "body")
    .field("left", or(
        def("VariableDeclaration"),
        def("Expression")))
    .field("right", def("Expression"))
    .field("body", def("Statement"));

def("LetStatement")
    .bases("Statement")
    .build("head", "body")
    // TODO Deviating from the spec by reusing VariableDeclarator here.
    .field("head", [def("VariableDeclarator")])
    .field("body", def("Statement"));

def("LetExpression")
    .bases("Expression")
    .build("head", "body")
    // TODO Deviating from the spec by reusing VariableDeclarator here.
    .field("head", [def("VariableDeclarator")])
    .field("body", def("Expression"));

def("GraphExpression")
    .bases("Expression")
    .build("index", "expression")
    .field("index", geq(0))
    .field("expression", def("Literal"));

def("GraphIndexExpression")
    .bases("Expression")
    .build("index")
    .field("index", geq(0));

},{"../lib/shared":186,"../lib/types":187,"./core":175}],181:[function(require,module,exports){
var assert = require("assert");
var types = require("../main");
var getFieldNames = types.getFieldNames;
var getFieldValue = types.getFieldValue;
var isArray = types.builtInTypes.array;
var isObject = types.builtInTypes.object;
var isDate = types.builtInTypes.Date;
var isRegExp = types.builtInTypes.RegExp;
var hasOwn = Object.prototype.hasOwnProperty;

function astNodesAreEquivalent(a, b, problemPath) {
    if (isArray.check(problemPath)) {
        problemPath.length = 0;
    } else {
        problemPath = null;
    }

    return areEquivalent(a, b, problemPath);
}

astNodesAreEquivalent.assert = function(a, b) {
    var problemPath = [];
    if (!astNodesAreEquivalent(a, b, problemPath)) {
        if (problemPath.length === 0) {
            assert.strictEqual(a, b);
        } else {
            assert.ok(
                false,
                "Nodes differ in the following path: " +
                    problemPath.map(subscriptForProperty).join("")
            );
        }
    }
};

function subscriptForProperty(property) {
    if (/[_$a-z][_$a-z0-9]*/i.test(property)) {
        return "." + property;
    }
    return "[" + JSON.stringify(property) + "]";
}

function areEquivalent(a, b, problemPath) {
    if (a === b) {
        return true;
    }

    if (isArray.check(a)) {
        return arraysAreEquivalent(a, b, problemPath);
    }

    if (isObject.check(a)) {
        return objectsAreEquivalent(a, b, problemPath);
    }

    if (isDate.check(a)) {
        return isDate.check(b) && (+a === +b);
    }

    if (isRegExp.check(a)) {
        return isRegExp.check(b) && (
            a.source === b.source &&
            a.global === b.global &&
            a.multiline === b.multiline &&
            a.ignoreCase === b.ignoreCase
        );
    }

    return a == b;
}

function arraysAreEquivalent(a, b, problemPath) {
    isArray.assert(a);
    var aLength = a.length;

    if (!isArray.check(b) || b.length !== aLength) {
        if (problemPath) {
            problemPath.push("length");
        }
        return false;
    }

    for (var i = 0; i < aLength; ++i) {
        if (problemPath) {
            problemPath.push(i);
        }

        if (i in a !== i in b) {
            return false;
        }

        if (!areEquivalent(a[i], b[i], problemPath)) {
            return false;
        }

        if (problemPath) {
            assert.strictEqual(problemPath.pop(), i);
        }
    }

    return true;
}

function objectsAreEquivalent(a, b, problemPath) {
    isObject.assert(a);
    if (!isObject.check(b)) {
        return false;
    }

    // Fast path for a common property of AST nodes.
    if (a.type !== b.type) {
        if (problemPath) {
            problemPath.push("type");
        }
        return false;
    }

    var aNames = getFieldNames(a);
    var aNameCount = aNames.length;

    var bNames = getFieldNames(b);
    var bNameCount = bNames.length;

    if (aNameCount === bNameCount) {
        for (var i = 0; i < aNameCount; ++i) {
            var name = aNames[i];
            var aChild = getFieldValue(a, name);
            var bChild = getFieldValue(b, name);

            if (problemPath) {
                problemPath.push(name);
            }

            if (!areEquivalent(aChild, bChild, problemPath)) {
                return false;
            }

            if (problemPath) {
                assert.strictEqual(problemPath.pop(), name);
            }
        }

        return true;
    }

    if (!problemPath) {
        return false;
    }

    // Since aNameCount !== bNameCount, we need to find some name that's
    // missing in aNames but present in bNames, or vice-versa.

    var seenNames = Object.create(null);

    for (i = 0; i < aNameCount; ++i) {
        seenNames[aNames[i]] = true;
    }

    for (i = 0; i < bNameCount; ++i) {
        name = bNames[i];

        if (!hasOwn.call(seenNames, name)) {
            problemPath.push(name);
            return false;
        }

        delete seenNames[name];
    }

    for (name in seenNames) {
        problemPath.push(name);
        break;
    }

    return false;
}

module.exports = astNodesAreEquivalent;

},{"../main":188,"assert":190}],182:[function(require,module,exports){
var assert = require("assert");
var types = require("./types");
var n = types.namedTypes;
var b = types.builders;
var isNumber = types.builtInTypes.number;
var isArray = types.builtInTypes.array;
var Path = require("./path");
var Scope = require("./scope");

function NodePath(value, parentPath, name) {
    assert.ok(this instanceof NodePath);
    Path.call(this, value, parentPath, name);
}

require("util").inherits(NodePath, Path);
var NPp = NodePath.prototype;

Object.defineProperties(NPp, {
    node: {
        get: function() {
            Object.defineProperty(this, "node", {
                configurable: true, // Enable deletion.
                value: this._computeNode()
            });

            return this.node;
        }
    },

    parent: {
        get: function() {
            Object.defineProperty(this, "parent", {
                configurable: true, // Enable deletion.
                value: this._computeParent()
            });

            return this.parent;
        }
    },

    scope: {
        get: function() {
            Object.defineProperty(this, "scope", {
                configurable: true, // Enable deletion.
                value: this._computeScope()
            });

            return this.scope;
        }
    }
});

NPp.replace = function() {
    delete this.node;
    delete this.parent;
    delete this.scope;
    return Path.prototype.replace.apply(this, arguments);
};

NPp.prune = function() {
    var remainingNodePath = this.parent;

    this.replace();

    return cleanUpNodesAfterPrune(remainingNodePath);
};

// The value of the first ancestor Path whose value is a Node.
NPp._computeNode = function() {
    var value = this.value;
    if (n.Node.check(value)) {
        return value;
    }

    var pp = this.parentPath;
    return pp && pp.node || null;
};

// The first ancestor Path whose value is a Node distinct from this.node.
NPp._computeParent = function() {
    var value = this.value;
    var pp = this.parentPath;

    if (!n.Node.check(value)) {
        while (pp && !n.Node.check(pp.value)) {
            pp = pp.parentPath;
        }

        if (pp) {
            pp = pp.parentPath;
        }
    }

    while (pp && !n.Node.check(pp.value)) {
        pp = pp.parentPath;
    }

    return pp || null;
};

// The closest enclosing scope that governs this node.
NPp._computeScope = function() {
    var value = this.value;
    var pp = this.parentPath;
    var scope = pp && pp.scope;

    if (n.Node.check(value) &&
        Scope.isEstablishedBy(value)) {
        scope = new Scope(this, scope);
    }

    return scope || null;
};

NPp.getValueProperty = function(name) {
    return types.getFieldValue(this.value, name);
};

/**
 * Determine whether this.node needs to be wrapped in parentheses in order
 * for a parser to reproduce the same local AST structure.
 *
 * For instance, in the expression `(1 + 2) * 3`, the BinaryExpression
 * whose operator is "+" needs parentheses, because `1 + 2 * 3` would
 * parse differently.
 *
 * If assumeExpressionContext === true, we don't worry about edge cases
 * like an anonymous FunctionExpression appearing lexically first in its
 * enclosing statement and thus needing parentheses to avoid being parsed
 * as a FunctionDeclaration with a missing name.
 */
NPp.needsParens = function(assumeExpressionContext) {
    var pp = this.parentPath;
    if (!pp) {
        return false;
    }

    var node = this.value;

    // Only expressions need parentheses.
    if (!n.Expression.check(node)) {
        return false;
    }

    // Identifiers never need parentheses.
    if (node.type === "Identifier") {
        return false;
    }

    while (!n.Node.check(pp.value)) {
        pp = pp.parentPath;
        if (!pp) {
            return false;
        }
    }

    var parent = pp.value;

    switch (node.type) {
    case "UnaryExpression":
    case "SpreadElement":
    case "SpreadProperty":
        return parent.type === "MemberExpression"
            && this.name === "object"
            && parent.object === node;

    case "BinaryExpression":
    case "LogicalExpression":
        switch (parent.type) {
        case "CallExpression":
            return this.name === "callee"
                && parent.callee === node;

        case "UnaryExpression":
        case "SpreadElement":
        case "SpreadProperty":
            return true;

        case "MemberExpression":
            return this.name === "object"
                && parent.object === node;

        case "BinaryExpression":
        case "LogicalExpression":
            var po = parent.operator;
            var pp = PRECEDENCE[po];
            var no = node.operator;
            var np = PRECEDENCE[no];

            if (pp > np) {
                return true;
            }

            if (pp === np && this.name === "right") {
                assert.strictEqual(parent.right, node);
                return true;
            }

        default:
            return false;
        }

    case "SequenceExpression":
        switch (parent.type) {
        case "ForStatement":
            // Although parentheses wouldn't hurt around sequence
            // expressions in the head of for loops, traditional style
            // dictates that e.g. i++, j++ should not be wrapped with
            // parentheses.
            return false;

        case "ExpressionStatement":
            return this.name !== "expression";

        default:
            // Otherwise err on the side of overparenthesization, adding
            // explicit exceptions above if this proves overzealous.
            return true;
        }

    case "YieldExpression":
        switch (parent.type) {
        case "BinaryExpression":
        case "LogicalExpression":
        case "UnaryExpression":
        case "SpreadElement":
        case "SpreadProperty":
        case "CallExpression":
        case "MemberExpression":
        case "NewExpression":
        case "ConditionalExpression":
        case "YieldExpression":
            return true;

        default:
            return false;
        }

    case "Literal":
        return parent.type === "MemberExpression"
            && isNumber.check(node.value)
            && this.name === "object"
            && parent.object === node;

    case "AssignmentExpression":
    case "ConditionalExpression":
        switch (parent.type) {
        case "UnaryExpression":
        case "SpreadElement":
        case "SpreadProperty":
        case "BinaryExpression":
        case "LogicalExpression":
            return true;

        case "CallExpression":
            return this.name === "callee"
                && parent.callee === node;

        case "ConditionalExpression":
            return this.name === "test"
                && parent.test === node;

        case "MemberExpression":
            return this.name === "object"
                && parent.object === node;

        default:
            return false;
        }

    default:
        if (parent.type === "NewExpression" &&
            this.name === "callee" &&
            parent.callee === node) {
            return containsCallExpression(node);
        }
    }

    if (assumeExpressionContext !== true &&
        !this.canBeFirstInStatement() &&
        this.firstInStatement())
        return true;

    return false;
};

function isBinary(node) {
    return n.BinaryExpression.check(node)
        || n.LogicalExpression.check(node);
}

function isUnaryLike(node) {
    return n.UnaryExpression.check(node)
        // I considered making SpreadElement and SpreadProperty subtypes
        // of UnaryExpression, but they're not really Expression nodes.
        || (n.SpreadElement && n.SpreadElement.check(node))
        || (n.SpreadProperty && n.SpreadProperty.check(node));
}

var PRECEDENCE = {};
[["||"],
 ["&&"],
 ["|"],
 ["^"],
 ["&"],
 ["==", "===", "!=", "!=="],
 ["<", ">", "<=", ">=", "in", "instanceof"],
 [">>", "<<", ">>>"],
 ["+", "-"],
 ["*", "/", "%"]
].forEach(function(tier, i) {
    tier.forEach(function(op) {
        PRECEDENCE[op] = i;
    });
});

function containsCallExpression(node) {
    if (n.CallExpression.check(node)) {
        return true;
    }

    if (isArray.check(node)) {
        return node.some(containsCallExpression);
    }

    if (n.Node.check(node)) {
        return types.someField(node, function(name, child) {
            return containsCallExpression(child);
        });
    }

    return false;
}

NPp.canBeFirstInStatement = function() {
    var node = this.node;
    return !n.FunctionExpression.check(node)
        && !n.ObjectExpression.check(node);
};

NPp.firstInStatement = function() {
    return firstInStatement(this);
};

function firstInStatement(path) {
    for (var node, parent; path.parent; path = path.parent) {
        node = path.node;
        parent = path.parent.node;

        if (n.BlockStatement.check(parent) &&
            path.parent.name === "body" &&
            path.name === 0) {
            assert.strictEqual(parent.body[0], node);
            return true;
        }

        if (n.ExpressionStatement.check(parent) &&
            path.name === "expression") {
            assert.strictEqual(parent.expression, node);
            return true;
        }

        if (n.SequenceExpression.check(parent) &&
            path.parent.name === "expressions" &&
            path.name === 0) {
            assert.strictEqual(parent.expressions[0], node);
            continue;
        }

        if (n.CallExpression.check(parent) &&
            path.name === "callee") {
            assert.strictEqual(parent.callee, node);
            continue;
        }

        if (n.MemberExpression.check(parent) &&
            path.name === "object") {
            assert.strictEqual(parent.object, node);
            continue;
        }

        if (n.ConditionalExpression.check(parent) &&
            path.name === "test") {
            assert.strictEqual(parent.test, node);
            continue;
        }

        if (isBinary(parent) &&
            path.name === "left") {
            assert.strictEqual(parent.left, node);
            continue;
        }

        if (n.UnaryExpression.check(parent) &&
            !parent.prefix &&
            path.name === "argument") {
            assert.strictEqual(parent.argument, node);
            continue;
        }

        return false;
    }

    return true;
}

/**
 * Pruning certain nodes will result in empty or incomplete nodes, here we clean those nodes up.
 */
function cleanUpNodesAfterPrune(remainingNodePath) {
    if (n.VariableDeclaration.check(remainingNodePath.node)) {
        var declarations = remainingNodePath.get('declarations').value;
        if (!declarations || declarations.length === 0) {
            return remainingNodePath.prune();
        }
    } else if (n.ExpressionStatement.check(remainingNodePath.node)) {
        if (!remainingNodePath.get('expression').value) {
            return remainingNodePath.prune();
        }
    } else if (n.IfStatement.check(remainingNodePath.node)) {
        cleanUpIfStatementAfterPrune(remainingNodePath);
    }

    return remainingNodePath;
}

function cleanUpIfStatementAfterPrune(ifStatement) {
    var testExpression = ifStatement.get('test').value;
    var alternate = ifStatement.get('alternate').value;
    var consequent = ifStatement.get('consequent').value;

    if (!consequent && !alternate) {
        var testExpressionStatement = b.expressionStatement(testExpression);

        ifStatement.replace(testExpressionStatement);
    } else if (!consequent && alternate) {
        var negatedTestExpression = b.unaryExpression('!', testExpression, true);

        if (n.UnaryExpression.check(testExpression) && testExpression.operator === '!') {
            negatedTestExpression = testExpression.argument;
        }

        ifStatement.get("test").replace(negatedTestExpression);
        ifStatement.get("consequent").replace(alternate);
        ifStatement.get("alternate").replace();
    }
}

module.exports = NodePath;

},{"./path":184,"./scope":185,"./types":187,"assert":190,"util":216}],183:[function(require,module,exports){
var assert = require("assert");
var types = require("./types");
var NodePath = require("./node-path");
var Printable = types.namedTypes.Printable;
var isArray = types.builtInTypes.array;
var isObject = types.builtInTypes.object;
var isFunction = types.builtInTypes.function;
var hasOwn = Object.prototype.hasOwnProperty;
var undefined;

function PathVisitor() {
    assert.ok(this instanceof PathVisitor);

    // Permanent state.
    this._reusableContextStack = [];

    this._methodNameTable = computeMethodNameTable(this);
    this._shouldVisitComments =
        hasOwn.call(this._methodNameTable, "Block") ||
        hasOwn.call(this._methodNameTable, "Line");

    this.Context = makeContextConstructor(this);

    // State reset every time PathVisitor.prototype.visit is called.
    this._visiting = false;
    this._changeReported = false;
}

function computeMethodNameTable(visitor) {
    var typeNames = Object.create(null);

    for (var methodName in visitor) {
        if (/^visit[A-Z]/.test(methodName)) {
            typeNames[methodName.slice("visit".length)] = true;
        }
    }

    var supertypeTable = types.computeSupertypeLookupTable(typeNames);
    var methodNameTable = Object.create(null);

    var typeNames = Object.keys(supertypeTable);
    var typeNameCount = typeNames.length;
    for (var i = 0; i < typeNameCount; ++i) {
        var typeName = typeNames[i];
        methodName = "visit" + supertypeTable[typeName];
        if (isFunction.check(visitor[methodName])) {
            methodNameTable[typeName] = methodName;
        }
    }

    return methodNameTable;
}

PathVisitor.fromMethodsObject = function fromMethodsObject(methods) {
    if (methods instanceof PathVisitor) {
        return methods;
    }

    if (!isObject.check(methods)) {
        // An empty visitor?
        return new PathVisitor;
    }

    function Visitor() {
        assert.ok(this instanceof Visitor);
        PathVisitor.call(this);
    }

    var Vp = Visitor.prototype = Object.create(PVp);
    Vp.constructor = Visitor;

    extend(Vp, methods);
    extend(Visitor, PathVisitor);

    isFunction.assert(Visitor.fromMethodsObject);
    isFunction.assert(Visitor.visit);

    return new Visitor;
};

function extend(target, source) {
    for (var property in source) {
        if (hasOwn.call(source, property)) {
            target[property] = source[property];
        }
    }

    return target;
}

PathVisitor.visit = function visit(node, methods) {
    return PathVisitor.fromMethodsObject(methods).visit(node);
};

var PVp = PathVisitor.prototype;

var recursiveVisitWarning = [
    "Recursively calling visitor.visit(path) resets visitor state.",
    "Try this.visit(path) or this.traverse(path) instead."
].join(" ");

PVp.visit = function() {
    assert.ok(!this._visiting, recursiveVisitWarning);

    // Private state that needs to be reset before every traversal.
    this._visiting = true;
    this._changeReported = false;
    this._abortRequested = false;

    var argc = arguments.length;
    var args = new Array(argc)
    for (var i = 0; i < argc; ++i) {
        args[i] = arguments[i];
    }

    if (!(args[0] instanceof NodePath)) {
        args[0] = new NodePath({ root: args[0] }).get("root");
    }

    // Called with the same arguments as .visit.
    this.reset.apply(this, args);

    try {
        var root = this.visitWithoutReset(args[0]);
        var didNotThrow = true;
    } finally {
        this._visiting = false;

        if (!didNotThrow && this._abortRequested) {
            // If this.visitWithoutReset threw an exception and
            // this._abortRequested was set to true, return the root of
            // the AST instead of letting the exception propagate, so that
            // client code does not have to provide a try-catch block to
            // intercept the AbortRequest exception.  Other kinds of
            // exceptions will propagate without being intercepted and
            // rethrown by a catch block, so their stacks will accurately
            // reflect the original throwing context.
            return args[0].value;
        }
    }

    return root;
};

PVp.AbortRequest = function AbortRequest() {};
PVp.abort = function() {
    var visitor = this;
    visitor._abortRequested = true;
    var request = new visitor.AbortRequest();

    // If you decide to catch this exception and stop it from propagating,
    // make sure to call its cancel method to avoid silencing other
    // exceptions that might be thrown later in the traversal.
    request.cancel = function() {
        visitor._abortRequested = false;
    };

    throw request;
};

PVp.reset = function(path/*, additional arguments */) {
    // Empty stub; may be reassigned or overridden by subclasses.
};

PVp.visitWithoutReset = function(path) {
    if (this instanceof this.Context) {
        // Since this.Context.prototype === this, there's a chance we
        // might accidentally call context.visitWithoutReset. If that
        // happens, re-invoke the method against context.visitor.
        return this.visitor.visitWithoutReset(path);
    }

    assert.ok(path instanceof NodePath);
    var value = path.value;

    var methodName = Printable.check(value) && this._methodNameTable[value.type];
    if (methodName) {
        var context = this.acquireContext(path);
        try {
            return context.invokeVisitorMethod(methodName);
        } finally {
            this.releaseContext(context);
        }

    } else {
        // If there was no visitor method to call, visit the children of
        // this node generically.
        return visitChildren(path, this);
    }
};

function visitChildren(path, visitor) {
    assert.ok(path instanceof NodePath);
    assert.ok(visitor instanceof PathVisitor);

    var value = path.value;

    if (isArray.check(value)) {
        path.each(visitor.visitWithoutReset, visitor);
    } else if (!isObject.check(value)) {
        // No children to visit.
    } else {
        var childNames = types.getFieldNames(value);

        // The .comments field of the Node type is hidden, so we only
        // visit it if the visitor defines visitBlock or visitLine, and
        // value.comments is defined.
        if (visitor._shouldVisitComments &&
            value.comments &&
            childNames.indexOf("comments") < 0) {
            childNames.push("comments");
        }

        var childCount = childNames.length;
        var childPaths = [];

        for (var i = 0; i < childCount; ++i) {
            var childName = childNames[i];
            if (!hasOwn.call(value, childName)) {
                value[childName] = types.getFieldValue(value, childName);
            }
            childPaths.push(path.get(childName));
        }

        for (var i = 0; i < childCount; ++i) {
            visitor.visitWithoutReset(childPaths[i]);
        }
    }

    return path.value;
}

PVp.acquireContext = function(path) {
    if (this._reusableContextStack.length === 0) {
        return new this.Context(path);
    }
    return this._reusableContextStack.pop().reset(path);
};

PVp.releaseContext = function(context) {
    assert.ok(context instanceof this.Context);
    this._reusableContextStack.push(context);
    context.currentPath = null;
};

PVp.reportChanged = function() {
    this._changeReported = true;
};

PVp.wasChangeReported = function() {
    return this._changeReported;
};

function makeContextConstructor(visitor) {
    function Context(path) {
        assert.ok(this instanceof Context);
        assert.ok(this instanceof PathVisitor);
        assert.ok(path instanceof NodePath);

        Object.defineProperty(this, "visitor", {
            value: visitor,
            writable: false,
            enumerable: true,
            configurable: false
        });

        this.currentPath = path;
        this.needToCallTraverse = true;

        Object.seal(this);
    }

    assert.ok(visitor instanceof PathVisitor);

    // Note that the visitor object is the prototype of Context.prototype,
    // so all visitor methods are inherited by context objects.
    var Cp = Context.prototype = Object.create(visitor);

    Cp.constructor = Context;
    extend(Cp, sharedContextProtoMethods);

    return Context;
}

// Every PathVisitor has a different this.Context constructor and
// this.Context.prototype object, but those prototypes can all use the
// same reset, invokeVisitorMethod, and traverse function objects.
var sharedContextProtoMethods = Object.create(null);

sharedContextProtoMethods.reset =
function reset(path) {
    assert.ok(this instanceof this.Context);
    assert.ok(path instanceof NodePath);

    this.currentPath = path;
    this.needToCallTraverse = true;

    return this;
};

sharedContextProtoMethods.invokeVisitorMethod =
function invokeVisitorMethod(methodName) {
    assert.ok(this instanceof this.Context);
    assert.ok(this.currentPath instanceof NodePath);

    var result = this.visitor[methodName].call(this, this.currentPath);

    if (result === false) {
        // Visitor methods return false to indicate that they have handled
        // their own traversal needs, and we should not complain if
        // this.needToCallTraverse is still true.
        this.needToCallTraverse = false;

    } else if (result !== undefined) {
        // Any other non-undefined value returned from the visitor method
        // is interpreted as a replacement value.
        this.currentPath = this.currentPath.replace(result)[0];

        if (this.needToCallTraverse) {
            // If this.traverse still hasn't been called, visit the
            // children of the replacement node.
            this.traverse(this.currentPath);
        }
    }

    assert.strictEqual(
        this.needToCallTraverse, false,
        "Must either call this.traverse or return false in " + methodName
    );

    var path = this.currentPath;
    return path && path.value;
};

sharedContextProtoMethods.traverse =
function traverse(path, newVisitor) {
    assert.ok(this instanceof this.Context);
    assert.ok(path instanceof NodePath);
    assert.ok(this.currentPath instanceof NodePath);

    this.needToCallTraverse = false;

    return visitChildren(path, PathVisitor.fromMethodsObject(
        newVisitor || this.visitor
    ));
};

sharedContextProtoMethods.visit =
function visit(path, newVisitor) {
    assert.ok(this instanceof this.Context);
    assert.ok(path instanceof NodePath);
    assert.ok(this.currentPath instanceof NodePath);

    this.needToCallTraverse = false;

    return PathVisitor.fromMethodsObject(
        newVisitor || this.visitor
    ).visitWithoutReset(path);
};

sharedContextProtoMethods.reportChanged = function reportChanged() {
    this.visitor.reportChanged();
};

sharedContextProtoMethods.abort = function abort() {
    this.needToCallTraverse = false;
    this.visitor.abort();
};

module.exports = PathVisitor;

},{"./node-path":182,"./types":187,"assert":190}],184:[function(require,module,exports){
var assert = require("assert");
var Op = Object.prototype;
var hasOwn = Op.hasOwnProperty;
var types = require("./types");
var isArray = types.builtInTypes.array;
var isNumber = types.builtInTypes.number;
var Ap = Array.prototype;
var slice = Ap.slice;
var map = Ap.map;

function Path(value, parentPath, name) {
    assert.ok(this instanceof Path);

    if (parentPath) {
        assert.ok(parentPath instanceof Path);
    } else {
        parentPath = null;
        name = null;
    }

    // The value encapsulated by this Path, generally equal to
    // parentPath.value[name] if we have a parentPath.
    this.value = value;

    // The immediate parent Path of this Path.
    this.parentPath = parentPath;

    // The name of the property of parentPath.value through which this
    // Path's value was reached.
    this.name = name;

    // Calling path.get("child") multiple times always returns the same
    // child Path object, for both performance and consistency reasons.
    this.__childCache = null;
}

var Pp = Path.prototype;

function getChildCache(path) {
    // Lazily create the child cache. This also cheapens cache
    // invalidation, since you can just reset path.__childCache to null.
    return path.__childCache || (path.__childCache = Object.create(null));
}

function getChildPath(path, name) {
    var cache = getChildCache(path);
    var actualChildValue = path.getValueProperty(name);
    var childPath = cache[name];
    if (!hasOwn.call(cache, name) ||
        // Ensure consistency between cache and reality.
        childPath.value !== actualChildValue) {
        childPath = cache[name] = new path.constructor(
            actualChildValue, path, name
        );
    }
    return childPath;
}

// This method is designed to be overridden by subclasses that need to
// handle missing properties, etc.
Pp.getValueProperty = function getValueProperty(name) {
    return this.value[name];
};

Pp.get = function get(name) {
    var path = this;
    var names = arguments;
    var count = names.length;

    for (var i = 0; i < count; ++i) {
        path = getChildPath(path, names[i]);
    }

    return path;
};

Pp.each = function each(callback, context) {
    var childPaths = [];
    var len = this.value.length;
    var i = 0;

    // Collect all the original child paths before invoking the callback.
    for (var i = 0; i < len; ++i) {
        if (hasOwn.call(this.value, i)) {
            childPaths[i] = this.get(i);
        }
    }

    // Invoke the callback on just the original child paths, regardless of
    // any modifications made to the array by the callback. I chose these
    // semantics over cleverly invoking the callback on new elements because
    // this way is much easier to reason about.
    context = context || this;
    for (i = 0; i < len; ++i) {
        if (hasOwn.call(childPaths, i)) {
            callback.call(context, childPaths[i]);
        }
    }
};

Pp.map = function map(callback, context) {
    var result = [];

    this.each(function(childPath) {
        result.push(callback.call(this, childPath));
    }, context);

    return result;
};

Pp.filter = function filter(callback, context) {
    var result = [];

    this.each(function(childPath) {
        if (callback.call(this, childPath)) {
            result.push(childPath);
        }
    }, context);

    return result;
};

function emptyMoves() {}
function getMoves(path, offset, start, end) {
    isArray.assert(path.value);

    if (offset === 0) {
        return emptyMoves;
    }

    var length = path.value.length;
    if (length < 1) {
        return emptyMoves;
    }

    var argc = arguments.length;
    if (argc === 2) {
        start = 0;
        end = length;
    } else if (argc === 3) {
        start = Math.max(start, 0);
        end = length;
    } else {
        start = Math.max(start, 0);
        end = Math.min(end, length);
    }

    isNumber.assert(start);
    isNumber.assert(end);

    var moves = Object.create(null);
    var cache = getChildCache(path);

    for (var i = start; i < end; ++i) {
        if (hasOwn.call(path.value, i)) {
            var childPath = path.get(i);
            assert.strictEqual(childPath.name, i);
            var newIndex = i + offset;
            childPath.name = newIndex;
            moves[newIndex] = childPath;
            delete cache[i];
        }
    }

    delete cache.length;

    return function() {
        for (var newIndex in moves) {
            var childPath = moves[newIndex];
            assert.strictEqual(childPath.name, +newIndex);
            cache[newIndex] = childPath;
            path.value[newIndex] = childPath.value;
        }
    };
}

Pp.shift = function shift() {
    var move = getMoves(this, -1);
    var result = this.value.shift();
    move();
    return result;
};

Pp.unshift = function unshift(node) {
    var move = getMoves(this, arguments.length);
    var result = this.value.unshift.apply(this.value, arguments);
    move();
    return result;
};

Pp.push = function push(node) {
    isArray.assert(this.value);
    delete getChildCache(this).length
    return this.value.push.apply(this.value, arguments);
};

Pp.pop = function pop() {
    isArray.assert(this.value);
    var cache = getChildCache(this);
    delete cache[this.value.length - 1];
    delete cache.length;
    return this.value.pop();
};

Pp.insertAt = function insertAt(index, node) {
    var argc = arguments.length;
    var move = getMoves(this, argc - 1, index);
    if (move === emptyMoves) {
        return this;
    }

    index = Math.max(index, 0);

    for (var i = 1; i < argc; ++i) {
        this.value[index + i - 1] = arguments[i];
    }

    move();

    return this;
};

Pp.insertBefore = function insertBefore(node) {
    var pp = this.parentPath;
    var argc = arguments.length;
    var insertAtArgs = [this.name];
    for (var i = 0; i < argc; ++i) {
        insertAtArgs.push(arguments[i]);
    }
    return pp.insertAt.apply(pp, insertAtArgs);
};

Pp.insertAfter = function insertAfter(node) {
    var pp = this.parentPath;
    var argc = arguments.length;
    var insertAtArgs = [this.name + 1];
    for (var i = 0; i < argc; ++i) {
        insertAtArgs.push(arguments[i]);
    }
    return pp.insertAt.apply(pp, insertAtArgs);
};

function repairRelationshipWithParent(path) {
    assert.ok(path instanceof Path);

    var pp = path.parentPath;
    if (!pp) {
        // Orphan paths have no relationship to repair.
        return path;
    }

    var parentValue = pp.value;
    var parentCache = getChildCache(pp);

    // Make sure parentCache[path.name] is populated.
    if (parentValue[path.name] === path.value) {
        parentCache[path.name] = path;
    } else if (isArray.check(parentValue)) {
        // Something caused path.name to become out of date, so attempt to
        // recover by searching for path.value in parentValue.
        var i = parentValue.indexOf(path.value);
        if (i >= 0) {
            parentCache[path.name = i] = path;
        }
    } else {
        // If path.value disagrees with parentValue[path.name], and
        // path.name is not an array index, let path.value become the new
        // parentValue[path.name] and update parentCache accordingly.
        parentValue[path.name] = path.value;
        parentCache[path.name] = path;
    }

    assert.strictEqual(parentValue[path.name], path.value);
    assert.strictEqual(path.parentPath.get(path.name), path);

    return path;
}

Pp.replace = function replace(replacement) {
    var results = [];
    var parentValue = this.parentPath.value;
    var parentCache = getChildCache(this.parentPath);
    var count = arguments.length;

    repairRelationshipWithParent(this);

    if (isArray.check(parentValue)) {
        var originalLength = parentValue.length;
        var move = getMoves(this.parentPath, count - 1, this.name + 1);

        var spliceArgs = [this.name, 1];
        for (var i = 0; i < count; ++i) {
            spliceArgs.push(arguments[i]);
        }

        var splicedOut = parentValue.splice.apply(parentValue, spliceArgs);

        assert.strictEqual(splicedOut[0], this.value);
        assert.strictEqual(
            parentValue.length,
            originalLength - 1 + count
        );

        move();

        if (count === 0) {
            delete this.value;
            delete parentCache[this.name];
            this.__childCache = null;

        } else {
            assert.strictEqual(parentValue[this.name], replacement);

            if (this.value !== replacement) {
                this.value = replacement;
                this.__childCache = null;
            }

            for (i = 0; i < count; ++i) {
                results.push(this.parentPath.get(this.name + i));
            }

            assert.strictEqual(results[0], this);
        }

    } else if (count === 1) {
        if (this.value !== replacement) {
            this.__childCache = null;
        }
        this.value = parentValue[this.name] = replacement;
        results.push(this);

    } else if (count === 0) {
        delete parentValue[this.name];
        delete this.value;
        this.__childCache = null;

        // Leave this path cached as parentCache[this.name], even though
        // it no longer has a value defined.

    } else {
        assert.ok(false, "Could not replace path");
    }

    return results;
};

module.exports = Path;

},{"./types":187,"assert":190}],185:[function(require,module,exports){
var assert = require("assert");
var types = require("./types");
var Type = types.Type;
var namedTypes = types.namedTypes;
var Node = namedTypes.Node;
var Expression = namedTypes.Expression;
var isArray = types.builtInTypes.array;
var hasOwn = Object.prototype.hasOwnProperty;
var b = types.builders;

function Scope(path, parentScope) {
    assert.ok(this instanceof Scope);
    assert.ok(path instanceof require("./node-path"));
    ScopeType.assert(path.value);

    var depth;

    if (parentScope) {
        assert.ok(parentScope instanceof Scope);
        depth = parentScope.depth + 1;
    } else {
        parentScope = null;
        depth = 0;
    }

    Object.defineProperties(this, {
        path: { value: path },
        node: { value: path.value },
        isGlobal: { value: !parentScope, enumerable: true },
        depth: { value: depth },
        parent: { value: parentScope },
        bindings: { value: {} }
    });
}

var scopeTypes = [
    // Program nodes introduce global scopes.
    namedTypes.Program,

    // Function is the supertype of FunctionExpression,
    // FunctionDeclaration, ArrowExpression, etc.
    namedTypes.Function,

    // In case you didn't know, the caught parameter shadows any variable
    // of the same name in an outer scope.
    namedTypes.CatchClause
];

var ScopeType = Type.or.apply(Type, scopeTypes);

Scope.isEstablishedBy = function(node) {
    return ScopeType.check(node);
};

var Sp = Scope.prototype;

// Will be overridden after an instance lazily calls scanScope.
Sp.didScan = false;

Sp.declares = function(name) {
    this.scan();
    return hasOwn.call(this.bindings, name);
};

Sp.declareTemporary = function(prefix) {
    if (prefix) {
        assert.ok(/^[a-z$_]/i.test(prefix), prefix);
    } else {
        prefix = "t$";
    }

    // Include this.depth in the name to make sure the name does not
    // collide with any variables in nested/enclosing scopes.
    prefix += this.depth.toString(36) + "$";

    this.scan();

    var index = 0;
    while (this.declares(prefix + index)) {
        ++index;
    }

    var name = prefix + index;
    return this.bindings[name] = types.builders.identifier(name);
};

Sp.injectTemporary = function(identifier, init) {
    identifier || (identifier = this.declareTemporary());

    var bodyPath = this.path.get("body");
    if (namedTypes.BlockStatement.check(bodyPath.value)) {
        bodyPath = bodyPath.get("body");
    }

    bodyPath.unshift(
        b.variableDeclaration(
            "var",
            [b.variableDeclarator(identifier, init || null)]
        )
    );

    return identifier;
};

Sp.scan = function(force) {
    if (force || !this.didScan) {
        for (var name in this.bindings) {
            // Empty out this.bindings, just in cases.
            delete this.bindings[name];
        }
        scanScope(this.path, this.bindings);
        this.didScan = true;
    }
};

Sp.getBindings = function () {
    this.scan();
    return this.bindings;
};

function scanScope(path, bindings) {
    var node = path.value;
    ScopeType.assert(node);

    if (namedTypes.CatchClause.check(node)) {
        // A catch clause establishes a new scope but the only variable
        // bound in that scope is the catch parameter. Any other
        // declarations create bindings in the outer scope.
        addPattern(path.get("param"), bindings);

    } else {
        recursiveScanScope(path, bindings);
    }
}

function recursiveScanScope(path, bindings) {
    var node = path.value;

    if (path.parent &&
        namedTypes.FunctionExpression.check(path.parent.node) &&
        path.parent.node.id) {
        addPattern(path.parent.get("id"), bindings);
    }

    if (!node) {
        // None of the remaining cases matter if node is falsy.

    } else if (isArray.check(node)) {
        path.each(function(childPath) {
            recursiveScanChild(childPath, bindings);
        });

    } else if (namedTypes.Function.check(node)) {
        path.get("params").each(function(paramPath) {
            addPattern(paramPath, bindings);
        });

        recursiveScanChild(path.get("body"), bindings);

    } else if (namedTypes.VariableDeclarator.check(node)) {
        addPattern(path.get("id"), bindings);
        recursiveScanChild(path.get("init"), bindings);

    } else if (node.type === "ImportSpecifier" ||
               node.type === "ImportNamespaceSpecifier" ||
               node.type === "ImportDefaultSpecifier") {
        addPattern(
            // Esprima used to use the .name field to refer to the local
            // binding identifier for ImportSpecifier nodes, but .id for
            // ImportNamespaceSpecifier and ImportDefaultSpecifier nodes.
            // ESTree/Acorn/ESpree use .local for all three node types.
            path.get(node.local ? "local" :
                     node.name ? "name" : "id"),
            bindings
        );

    } else if (Node.check(node) && !Expression.check(node)) {
        types.eachField(node, function(name, child) {
            var childPath = path.get(name);
            assert.strictEqual(childPath.value, child);
            recursiveScanChild(childPath, bindings);
        });
    }
}

function recursiveScanChild(path, bindings) {
    var node = path.value;

    if (!node || Expression.check(node)) {
        // Ignore falsy values and Expressions.

    } else if (namedTypes.FunctionDeclaration.check(node)) {
        addPattern(path.get("id"), bindings);

    } else if (namedTypes.ClassDeclaration &&
               namedTypes.ClassDeclaration.check(node)) {
        addPattern(path.get("id"), bindings);

    } else if (ScopeType.check(node)) {
        if (namedTypes.CatchClause.check(node)) {
            var catchParamName = node.param.name;
            var hadBinding = hasOwn.call(bindings, catchParamName);

            // Any declarations that occur inside the catch body that do
            // not have the same name as the catch parameter should count
            // as bindings in the outer scope.
            recursiveScanScope(path.get("body"), bindings);

            // If a new binding matching the catch parameter name was
            // created while scanning the catch body, ignore it because it
            // actually refers to the catch parameter and not the outer
            // scope that we're currently scanning.
            if (!hadBinding) {
                delete bindings[catchParamName];
            }
        }

    } else {
        recursiveScanScope(path, bindings);
    }
}

function addPattern(patternPath, bindings) {
    var pattern = patternPath.value;
    namedTypes.Pattern.assert(pattern);

    if (namedTypes.Identifier.check(pattern)) {
        if (hasOwn.call(bindings, pattern.name)) {
            bindings[pattern.name].push(patternPath);
        } else {
            bindings[pattern.name] = [patternPath];
        }

    } else if (namedTypes.ObjectPattern &&
               namedTypes.ObjectPattern.check(pattern)) {
        patternPath.get('properties').each(function(propertyPath) {
            var property = propertyPath.value;
            if (namedTypes.Pattern.check(property)) {
                addPattern(propertyPath, bindings);
            } else  if (namedTypes.Property.check(property)) {
                addPattern(propertyPath.get('value'), bindings);
            } else if (namedTypes.SpreadProperty &&
                       namedTypes.SpreadProperty.check(property)) {
                addPattern(propertyPath.get('argument'), bindings);
            }
        });

    } else if (namedTypes.ArrayPattern &&
               namedTypes.ArrayPattern.check(pattern)) {
        patternPath.get('elements').each(function(elementPath) {
            var element = elementPath.value;
            if (namedTypes.Pattern.check(element)) {
                addPattern(elementPath, bindings);
            } else if (namedTypes.SpreadElement &&
                       namedTypes.SpreadElement.check(element)) {
                addPattern(elementPath.get("argument"), bindings);
            }
        });

    } else if (namedTypes.PropertyPattern &&
               namedTypes.PropertyPattern.check(pattern)) {
        addPattern(patternPath.get('pattern'), bindings);

    } else if ((namedTypes.SpreadElementPattern &&
                namedTypes.SpreadElementPattern.check(pattern)) ||
               (namedTypes.SpreadPropertyPattern &&
                namedTypes.SpreadPropertyPattern.check(pattern))) {
        addPattern(patternPath.get('argument'), bindings);
    }
}

Sp.lookup = function(name) {
    for (var scope = this; scope; scope = scope.parent)
        if (scope.declares(name))
            break;
    return scope;
};

Sp.getGlobalScope = function() {
    var scope = this;
    while (!scope.isGlobal)
        scope = scope.parent;
    return scope;
};

module.exports = Scope;

},{"./node-path":182,"./types":187,"assert":190}],186:[function(require,module,exports){
var types = require("../lib/types");
var Type = types.Type;
var builtin = types.builtInTypes;
var isNumber = builtin.number;

// An example of constructing a new type with arbitrary constraints from
// an existing type.
exports.geq = function(than) {
    return new Type(function(value) {
        return isNumber.check(value) && value >= than;
    }, isNumber + " >= " + than);
};

// Default value-returning functions that may optionally be passed as a
// third argument to Def.prototype.field.
exports.defaults = {
    // Functions were used because (among other reasons) that's the most
    // elegant way to allow for the emptyArray one always to give a new
    // array instance.
    "null": function() { return null },
    "emptyArray": function() { return [] },
    "false": function() { return false },
    "true": function() { return true },
    "undefined": function() {}
};

var naiveIsPrimitive = Type.or(
    builtin.string,
    builtin.number,
    builtin.boolean,
    builtin.null,
    builtin.undefined
);

exports.isPrimitive = new Type(function(value) {
    if (value === null)
        return true;
    var type = typeof value;
    return !(type === "object" ||
             type === "function");
}, naiveIsPrimitive.toString());

},{"../lib/types":187}],187:[function(require,module,exports){
var assert = require("assert");
var Ap = Array.prototype;
var slice = Ap.slice;
var map = Ap.map;
var each = Ap.forEach;
var Op = Object.prototype;
var objToStr = Op.toString;
var funObjStr = objToStr.call(function(){});
var strObjStr = objToStr.call("");
var hasOwn = Op.hasOwnProperty;

// A type is an object with a .check method that takes a value and returns
// true or false according to whether the value matches the type.

function Type(check, name) {
    var self = this;
    assert.ok(self instanceof Type, self);

    // Unfortunately we can't elegantly reuse isFunction and isString,
    // here, because this code is executed while defining those types.
    assert.strictEqual(objToStr.call(check), funObjStr,
                       check + " is not a function");

    // The `name` parameter can be either a function or a string.
    var nameObjStr = objToStr.call(name);
    assert.ok(nameObjStr === funObjStr ||
              nameObjStr === strObjStr,
              name + " is neither a function nor a string");

    Object.defineProperties(self, {
        name: { value: name },
        check: {
            value: function(value, deep) {
                var result = check.call(self, value, deep);
                if (!result && deep && objToStr.call(deep) === funObjStr)
                    deep(self, value);
                return result;
            }
        }
    });
}

var Tp = Type.prototype;

// Throughout this file we use Object.defineProperty to prevent
// redefinition of exported properties.
exports.Type = Type;

// Like .check, except that failure triggers an AssertionError.
Tp.assert = function(value, deep) {
    if (!this.check(value, deep)) {
        var str = shallowStringify(value);
        assert.ok(false, str + " does not match type " + this);
        return false;
    }
    return true;
};

function shallowStringify(value) {
    if (isObject.check(value))
        return "{" + Object.keys(value).map(function(key) {
            return key + ": " + value[key];
        }).join(", ") + "}";

    if (isArray.check(value))
        return "[" + value.map(shallowStringify).join(", ") + "]";

    return JSON.stringify(value);
}

Tp.toString = function() {
    var name = this.name;

    if (isString.check(name))
        return name;

    if (isFunction.check(name))
        return name.call(this) + "";

    return name + " type";
};

var builtInTypes = {};
exports.builtInTypes = builtInTypes;

function defBuiltInType(example, name) {
    var objStr = objToStr.call(example);

    Object.defineProperty(builtInTypes, name, {
        enumerable: true,
        value: new Type(function(value) {
            return objToStr.call(value) === objStr;
        }, name)
    });

    return builtInTypes[name];
}

// These types check the underlying [[Class]] attribute of the given
// value, rather than using the problematic typeof operator. Note however
// that no subtyping is considered; so, for instance, isObject.check
// returns false for [], /./, new Date, and null.
var isString = defBuiltInType("", "string");
var isFunction = defBuiltInType(function(){}, "function");
var isArray = defBuiltInType([], "array");
var isObject = defBuiltInType({}, "object");
var isRegExp = defBuiltInType(/./, "RegExp");
var isDate = defBuiltInType(new Date, "Date");
var isNumber = defBuiltInType(3, "number");
var isBoolean = defBuiltInType(true, "boolean");
var isNull = defBuiltInType(null, "null");
var isUndefined = defBuiltInType(void 0, "undefined");

// There are a number of idiomatic ways of expressing types, so this
// function serves to coerce them all to actual Type objects. Note that
// providing the name argument is not necessary in most cases.
function toType(from, name) {
    // The toType function should of course be idempotent.
    if (from instanceof Type)
        return from;

    // The Def type is used as a helper for constructing compound
    // interface types for AST nodes.
    if (from instanceof Def)
        return from.type;

    // Support [ElemType] syntax.
    if (isArray.check(from))
        return Type.fromArray(from);

    // Support { someField: FieldType, ... } syntax.
    if (isObject.check(from))
        return Type.fromObject(from);

    // If isFunction.check(from), assume that from is a binary predicate
    // function we can use to define the type.
    if (isFunction.check(from))
        return new Type(from, name);

    // As a last resort, toType returns a type that matches any value that
    // is === from. This is primarily useful for literal values like
    // toType(null), but it has the additional advantage of allowing
    // toType to be a total function.
    return new Type(function(value) {
        return value === from;
    }, isUndefined.check(name) ? function() {
        return from + "";
    } : name);
}

// Returns a type that matches the given value iff any of type1, type2,
// etc. match the value.
Type.or = function(/* type1, type2, ... */) {
    var types = [];
    var len = arguments.length;
    for (var i = 0; i < len; ++i)
        types.push(toType(arguments[i]));

    return new Type(function(value, deep) {
        for (var i = 0; i < len; ++i)
            if (types[i].check(value, deep))
                return true;
        return false;
    }, function() {
        return types.join(" | ");
    });
};

Type.fromArray = function(arr) {
    assert.ok(isArray.check(arr));
    assert.strictEqual(
        arr.length, 1,
        "only one element type is permitted for typed arrays");
    return toType(arr[0]).arrayOf();
};

Tp.arrayOf = function() {
    var elemType = this;
    return new Type(function(value, deep) {
        return isArray.check(value) && value.every(function(elem) {
            return elemType.check(elem, deep);
        });
    }, function() {
        return "[" + elemType + "]";
    });
};

Type.fromObject = function(obj) {
    var fields = Object.keys(obj).map(function(name) {
        return new Field(name, obj[name]);
    });

    return new Type(function(value, deep) {
        return isObject.check(value) && fields.every(function(field) {
            return field.type.check(value[field.name], deep);
        });
    }, function() {
        return "{ " + fields.join(", ") + " }";
    });
};

function Field(name, type, defaultFn, hidden) {
    var self = this;

    assert.ok(self instanceof Field);
    isString.assert(name);

    type = toType(type);

    var properties = {
        name: { value: name },
        type: { value: type },
        hidden: { value: !!hidden }
    };

    if (isFunction.check(defaultFn)) {
        properties.defaultFn = { value: defaultFn };
    }

    Object.defineProperties(self, properties);
}

var Fp = Field.prototype;

Fp.toString = function() {
    return JSON.stringify(this.name) + ": " + this.type;
};

Fp.getValue = function(obj) {
    var value = obj[this.name];

    if (!isUndefined.check(value))
        return value;

    if (this.defaultFn)
        value = this.defaultFn.call(obj);

    return value;
};

// Define a type whose name is registered in a namespace (the defCache) so
// that future definitions will return the same type given the same name.
// In particular, this system allows for circular and forward definitions.
// The Def object d returned from Type.def may be used to configure the
// type d.type by calling methods such as d.bases, d.build, and d.field.
Type.def = function(typeName) {
    isString.assert(typeName);
    return hasOwn.call(defCache, typeName)
        ? defCache[typeName]
        : defCache[typeName] = new Def(typeName);
};

// In order to return the same Def instance every time Type.def is called
// with a particular name, those instances need to be stored in a cache.
var defCache = Object.create(null);

function Def(typeName) {
    var self = this;
    assert.ok(self instanceof Def);

    Object.defineProperties(self, {
        typeName: { value: typeName },
        baseNames: { value: [] },
        ownFields: { value: Object.create(null) },

        // These two are populated during finalization.
        allSupertypes: { value: Object.create(null) }, // Includes own typeName.
        supertypeList: { value: [] }, // Linear inheritance hierarchy.
        allFields: { value: Object.create(null) }, // Includes inherited fields.
        fieldNames: { value: [] }, // Non-hidden keys of allFields.

        type: {
            value: new Type(function(value, deep) {
                return self.check(value, deep);
            }, typeName)
        }
    });
}

Def.fromValue = function(value) {
    if (value && typeof value === "object") {
        var type = value.type;
        if (typeof type === "string" &&
            hasOwn.call(defCache, type)) {
            var d = defCache[type];
            if (d.finalized) {
                return d;
            }
        }
    }

    return null;
};

var Dp = Def.prototype;

Dp.isSupertypeOf = function(that) {
    if (that instanceof Def) {
        assert.strictEqual(this.finalized, true);
        assert.strictEqual(that.finalized, true);
        return hasOwn.call(that.allSupertypes, this.typeName);
    } else {
        assert.ok(false, that + " is not a Def");
    }
};

// Note that the list returned by this function is a copy of the internal
// supertypeList, *without* the typeName itself as the first element.
exports.getSupertypeNames = function(typeName) {
    assert.ok(hasOwn.call(defCache, typeName));
    var d = defCache[typeName];
    assert.strictEqual(d.finalized, true);
    return d.supertypeList.slice(1);
};

// Returns an object mapping from every known type in the defCache to the
// most specific supertype whose name is an own property of the candidates
// object.
exports.computeSupertypeLookupTable = function(candidates) {
    var table = {};
    var typeNames = Object.keys(defCache);
    var typeNameCount = typeNames.length;

    for (var i = 0; i < typeNameCount; ++i) {
        var typeName = typeNames[i];
        var d = defCache[typeName];
        assert.strictEqual(d.finalized, true);
        for (var j = 0; j < d.supertypeList.length; ++j) {
            var superTypeName = d.supertypeList[j];
            if (hasOwn.call(candidates, superTypeName)) {
                table[typeName] = superTypeName;
                break;
            }
        }
    }

    return table;
};

Dp.checkAllFields = function(value, deep) {
    var allFields = this.allFields;
    assert.strictEqual(this.finalized, true);

    function checkFieldByName(name) {
        var field = allFields[name];
        var type = field.type;
        var child = field.getValue(value);
        return type.check(child, deep);
    }

    return isObject.check(value)
        && Object.keys(allFields).every(checkFieldByName);
};

Dp.check = function(value, deep) {
    assert.strictEqual(
        this.finalized, true,
        "prematurely checking unfinalized type " + this.typeName);

    // A Def type can only match an object value.
    if (!isObject.check(value))
        return false;

    var vDef = Def.fromValue(value);
    if (!vDef) {
        // If we couldn't infer the Def associated with the given value,
        // and we expected it to be a SourceLocation or a Position, it was
        // probably just missing a "type" field (because Esprima does not
        // assign a type property to such nodes). Be optimistic and let
        // this.checkAllFields make the final decision.
        if (this.typeName === "SourceLocation" ||
            this.typeName === "Position") {
            return this.checkAllFields(value, deep);
        }

        // Calling this.checkAllFields for any other type of node is both
        // bad for performance and way too forgiving.
        return false;
    }

    // If checking deeply and vDef === this, then we only need to call
    // checkAllFields once. Calling checkAllFields is too strict when deep
    // is false, because then we only care about this.isSupertypeOf(vDef).
    if (deep && vDef === this)
        return this.checkAllFields(value, deep);

    // In most cases we rely exclusively on isSupertypeOf to make O(1)
    // subtyping determinations. This suffices in most situations outside
    // of unit tests, since interface conformance is checked whenever new
    // instances are created using builder functions.
    if (!this.isSupertypeOf(vDef))
        return false;

    // The exception is when deep is true; then, we recursively check all
    // fields.
    if (!deep)
        return true;

    // Use the more specific Def (vDef) to perform the deep check, but
    // shallow-check fields defined by the less specific Def (this).
    return vDef.checkAllFields(value, deep)
        && this.checkAllFields(value, false);
};

Dp.bases = function() {
    var bases = this.baseNames;

    assert.strictEqual(this.finalized, false);

    each.call(arguments, function(baseName) {
        isString.assert(baseName);

        // This indexOf lookup may be O(n), but the typical number of base
        // names is very small, and indexOf is a native Array method.
        if (bases.indexOf(baseName) < 0)
            bases.push(baseName);
    });

    return this; // For chaining.
};

// False by default until .build(...) is called on an instance.
Object.defineProperty(Dp, "buildable", { value: false });

var builders = {};
exports.builders = builders;

// This object is used as prototype for any node created by a builder.
var nodePrototype = {};

// Call this function to define a new method to be shared by all AST
// nodes. The replaced method (if any) is returned for easy wrapping.
exports.defineMethod = function(name, func) {
    var old = nodePrototype[name];

    // Pass undefined as func to delete nodePrototype[name].
    if (isUndefined.check(func)) {
        delete nodePrototype[name];

    } else {
        isFunction.assert(func);

        Object.defineProperty(nodePrototype, name, {
            enumerable: true, // For discoverability.
            configurable: true, // For delete proto[name].
            value: func
        });
    }

    return old;
};

// Calling the .build method of a Def simultaneously marks the type as
// buildable (by defining builders[getBuilderName(typeName)]) and
// specifies the order of arguments that should be passed to the builder
// function to create an instance of the type.
Dp.build = function(/* param1, param2, ... */) {
    var self = this;

    // Calling Def.prototype.build multiple times has the effect of merely
    // redefining this property.
    Object.defineProperty(self, "buildParams", {
        value: slice.call(arguments),
        writable: false,
        enumerable: false,
        configurable: true
    });

    assert.strictEqual(self.finalized, false);
    isString.arrayOf().assert(self.buildParams);

    if (self.buildable) {
        // If this Def is already buildable, update self.buildParams and
        // continue using the old builder function.
        return self;
    }

    // Every buildable type will have its "type" field filled in
    // automatically. This includes types that are not subtypes of Node,
    // like SourceLocation, but that seems harmless (TODO?).
    self.field("type", self.typeName, function() { return self.typeName });

    // Override Dp.buildable for this Def instance.
    Object.defineProperty(self, "buildable", { value: true });

    Object.defineProperty(builders, getBuilderName(self.typeName), {
        enumerable: true,

        value: function() {
            var args = arguments;
            var argc = args.length;
            var built = Object.create(nodePrototype);

            assert.ok(
                self.finalized,
                "attempting to instantiate unfinalized type " + self.typeName);

            function add(param, i) {
                if (hasOwn.call(built, param))
                    return;

                var all = self.allFields;
                assert.ok(hasOwn.call(all, param), param);

                var field = all[param];
                var type = field.type;
                var value;

                if (isNumber.check(i) && i < argc) {
                    value = args[i];
                } else if (field.defaultFn) {
                    // Expose the partially-built object to the default
                    // function as its `this` object.
                    value = field.defaultFn.call(built);
                } else {
                    var message = "no value or default function given for field " +
                        JSON.stringify(param) + " of " + self.typeName + "(" +
                            self.buildParams.map(function(name) {
                                return all[name];
                            }).join(", ") + ")";
                    assert.ok(false, message);
                }

                if (!type.check(value)) {
                    assert.ok(
                        false,
                        shallowStringify(value) +
                            " does not match field " + field +
                            " of type " + self.typeName
                    );
                }

                // TODO Could attach getters and setters here to enforce
                // dynamic type safety.
                built[param] = value;
            }

            self.buildParams.forEach(function(param, i) {
                add(param, i);
            });

            Object.keys(self.allFields).forEach(function(param) {
                add(param); // Use the default value.
            });

            // Make sure that the "type" field was filled automatically.
            assert.strictEqual(built.type, self.typeName);

            return built;
        }
    });

    return self; // For chaining.
};

function getBuilderName(typeName) {
    return typeName.replace(/^[A-Z]+/, function(upperCasePrefix) {
        var len = upperCasePrefix.length;
        switch (len) {
        case 0: return "";
        // If there's only one initial capital letter, just lower-case it.
        case 1: return upperCasePrefix.toLowerCase();
        default:
            // If there's more than one initial capital letter, lower-case
            // all but the last one, so that XMLDefaultDeclaration (for
            // example) becomes xmlDefaultDeclaration.
            return upperCasePrefix.slice(
                0, len - 1).toLowerCase() +
                upperCasePrefix.charAt(len - 1);
        }
    });
}

// The reason fields are specified using .field(...) instead of an object
// literal syntax is somewhat subtle: the object literal syntax would
// support only one key and one value, but with .field(...) we can pass
// any number of arguments to specify the field.
Dp.field = function(name, type, defaultFn, hidden) {
    assert.strictEqual(this.finalized, false);
    this.ownFields[name] = new Field(name, type, defaultFn, hidden);
    return this; // For chaining.
};

var namedTypes = {};
exports.namedTypes = namedTypes;

// Like Object.keys, but aware of what fields each AST type should have.
function getFieldNames(object) {
    var d = Def.fromValue(object);
    if (d) {
        return d.fieldNames.slice(0);
    }

    if ("type" in object) {
        assert.ok(
            false,
            "did not recognize object of type " +
                JSON.stringify(object.type)
        );
    }

    return Object.keys(object);
}
exports.getFieldNames = getFieldNames;

// Get the value of an object property, taking object.type and default
// functions into account.
function getFieldValue(object, fieldName) {
    var d = Def.fromValue(object);
    if (d) {
        var field = d.allFields[fieldName];
        if (field) {
            return field.getValue(object);
        }
    }

    return object[fieldName];
}
exports.getFieldValue = getFieldValue;

// Iterate over all defined fields of an object, including those missing
// or undefined, passing each field name and effective value (as returned
// by getFieldValue) to the callback. If the object has no corresponding
// Def, the callback will never be called.
exports.eachField = function(object, callback, context) {
    getFieldNames(object).forEach(function(name) {
        callback.call(this, name, getFieldValue(object, name));
    }, context);
};

// Similar to eachField, except that iteration stops as soon as the
// callback returns a truthy value. Like Array.prototype.some, the final
// result is either true or false to indicates whether the callback
// returned true for any element or not.
exports.someField = function(object, callback, context) {
    return getFieldNames(object).some(function(name) {
        return callback.call(this, name, getFieldValue(object, name));
    }, context);
};

// This property will be overridden as true by individual Def instances
// when they are finalized.
Object.defineProperty(Dp, "finalized", { value: false });

Dp.finalize = function() {
    // It's not an error to finalize a type more than once, but only the
    // first call to .finalize does anything.
    if (!this.finalized) {
        var allFields = this.allFields;
        var allSupertypes = this.allSupertypes;

        this.baseNames.forEach(function(name) {
            var def = defCache[name];
            def.finalize();
            extend(allFields, def.allFields);
            extend(allSupertypes, def.allSupertypes);
        });

        // TODO Warn if fields are overridden with incompatible types.
        extend(allFields, this.ownFields);
        allSupertypes[this.typeName] = this;

        this.fieldNames.length = 0;
        for (var fieldName in allFields) {
            if (hasOwn.call(allFields, fieldName) &&
                !allFields[fieldName].hidden) {
                this.fieldNames.push(fieldName);
            }
        }

        // Types are exported only once they have been finalized.
        Object.defineProperty(namedTypes, this.typeName, {
            enumerable: true,
            value: this.type
        });

        Object.defineProperty(this, "finalized", { value: true });

        // A linearization of the inheritance hierarchy.
        populateSupertypeList(this.typeName, this.supertypeList);
    }
};

function populateSupertypeList(typeName, list) {
    list.length = 0;
    list.push(typeName);

    var lastSeen = Object.create(null);

    for (var pos = 0; pos < list.length; ++pos) {
        typeName = list[pos];
        var d = defCache[typeName];
        assert.strictEqual(d.finalized, true);

        // If we saw typeName earlier in the breadth-first traversal,
        // delete the last-seen occurrence.
        if (hasOwn.call(lastSeen, typeName)) {
            delete list[lastSeen[typeName]];
        }

        // Record the new index of the last-seen occurrence of typeName.
        lastSeen[typeName] = pos;

        // Enqueue the base names of this type.
        list.push.apply(list, d.baseNames);
    }

    // Compaction loop to remove array holes.
    for (var to = 0, from = to, len = list.length; from < len; ++from) {
        if (hasOwn.call(list, from)) {
            list[to++] = list[from];
        }
    }

    list.length = to;
}

function extend(into, from) {
    Object.keys(from).forEach(function(name) {
        into[name] = from[name];
    });

    return into;
};

exports.finalize = function() {
    Object.keys(defCache).forEach(function(name) {
        defCache[name].finalize();
    });
};

},{"assert":190}],188:[function(require,module,exports){
var types = require("./lib/types");

// This core module of AST types captures ES5 as it is parsed today by
// git://github.com/ariya/esprima.git#master.
require("./def/core");

// Feel free to add to or remove from this list of extension modules to
// configure the precise type hierarchy that you need.
require("./def/es6");
require("./def/es7");
require("./def/mozilla");
require("./def/e4x");
require("./def/fb-harmony");

types.finalize();

exports.Type = types.Type;
exports.builtInTypes = types.builtInTypes;
exports.namedTypes = types.namedTypes;
exports.builders = types.builders;
exports.defineMethod = types.defineMethod;
exports.getFieldNames = types.getFieldNames;
exports.getFieldValue = types.getFieldValue;
exports.eachField = types.eachField;
exports.someField = types.someField;
exports.getSupertypeNames = types.getSupertypeNames;
exports.astNodesAreEquivalent = require("./lib/equiv");
exports.finalize = types.finalize;
exports.NodePath = require("./lib/node-path");
exports.PathVisitor = require("./lib/path-visitor");
exports.visit = exports.PathVisitor.visit;

},{"./def/core":175,"./def/e4x":176,"./def/es6":177,"./def/es7":178,"./def/fb-harmony":179,"./def/mozilla":180,"./lib/equiv":181,"./lib/node-path":182,"./lib/path-visitor":183,"./lib/types":187}],189:[function(require,module,exports){

},{}],190:[function(require,module,exports){
// http://wiki.commonjs.org/wiki/Unit_Testing/1.0
//
// THIS IS NOT TESTED NOR LIKELY TO WORK OUTSIDE V8!
//
// Originally from narwhal.js (http://narwhaljs.org)
// Copyright (c) 2009 Thomas Robinson <280north.com>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the 'Software'), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

// when used in node, this will actually load the util module we depend on
// versus loading the builtin util module as happens otherwise
// this is a bug in node module loading as far as I am concerned
var util = require('util/');

var pSlice = Array.prototype.slice;
var hasOwn = Object.prototype.hasOwnProperty;

// 1. The assert module provides functions that throw
// AssertionError's when particular conditions are not met. The
// assert module must conform to the following interface.

var assert = module.exports = ok;

// 2. The AssertionError is defined in assert.
// new assert.AssertionError({ message: message,
//                             actual: actual,
//                             expected: expected })

assert.AssertionError = function AssertionError(options) {
  this.name = 'AssertionError';
  this.actual = options.actual;
  this.expected = options.expected;
  this.operator = options.operator;
  if (options.message) {
    this.message = options.message;
    this.generatedMessage = false;
  } else {
    this.message = getMessage(this);
    this.generatedMessage = true;
  }
  var stackStartFunction = options.stackStartFunction || fail;

  if (Error.captureStackTrace) {
    Error.captureStackTrace(this, stackStartFunction);
  }
  else {
    // non v8 browsers so we can have a stacktrace
    var err = new Error();
    if (err.stack) {
      var out = err.stack;

      // try to strip useless frames
      var fn_name = stackStartFunction.name;
      var idx = out.indexOf('\n' + fn_name);
      if (idx >= 0) {
        // once we have located the function frame
        // we need to strip out everything before it (and its line)
        var next_line = out.indexOf('\n', idx + 1);
        out = out.substring(next_line + 1);
      }

      this.stack = out;
    }
  }
};

// assert.AssertionError instanceof Error
util.inherits(assert.AssertionError, Error);

function replacer(key, value) {
  if (util.isUndefined(value)) {
    return '' + value;
  }
  if (util.isNumber(value) && !isFinite(value)) {
    return value.toString();
  }
  if (util.isFunction(value) || util.isRegExp(value)) {
    return value.toString();
  }
  return value;
}

function truncate(s, n) {
  if (util.isString(s)) {
    return s.length < n ? s : s.slice(0, n);
  } else {
    return s;
  }
}

function getMessage(self) {
  return truncate(JSON.stringify(self.actual, replacer), 128) + ' ' +
         self.operator + ' ' +
         truncate(JSON.stringify(self.expected, replacer), 128);
}

// At present only the three keys mentioned above are used and
// understood by the spec. Implementations or sub modules can pass
// other keys to the AssertionError's constructor - they will be
// ignored.

// 3. All of the following functions must throw an AssertionError
// when a corresponding condition is not met, with a message that
// may be undefined if not provided.  All assertion methods provide
// both the actual and expected values to the assertion error for
// display purposes.

function fail(actual, expected, message, operator, stackStartFunction) {
  throw new assert.AssertionError({
    message: message,
    actual: actual,
    expected: expected,
    operator: operator,
    stackStartFunction: stackStartFunction
  });
}

// EXTENSION! allows for well behaved errors defined elsewhere.
assert.fail = fail;

// 4. Pure assertion tests whether a value is truthy, as determined
// by !!guard.
// assert.ok(guard, message_opt);
// This statement is equivalent to assert.equal(true, !!guard,
// message_opt);. To test strictly for the value true, use
// assert.strictEqual(true, guard, message_opt);.

function ok(value, message) {
  if (!value) fail(value, true, message, '==', assert.ok);
}
assert.ok = ok;

// 5. The equality assertion tests shallow, coercive equality with
// ==.
// assert.equal(actual, expected, message_opt);

assert.equal = function equal(actual, expected, message) {
  if (actual != expected) fail(actual, expected, message, '==', assert.equal);
};

// 6. The non-equality assertion tests for whether two objects are not equal
// with != assert.notEqual(actual, expected, message_opt);

assert.notEqual = function notEqual(actual, expected, message) {
  if (actual == expected) {
    fail(actual, expected, message, '!=', assert.notEqual);
  }
};

// 7. The equivalence assertion tests a deep equality relation.
// assert.deepEqual(actual, expected, message_opt);

assert.deepEqual = function deepEqual(actual, expected, message) {
  if (!_deepEqual(actual, expected)) {
    fail(actual, expected, message, 'deepEqual', assert.deepEqual);
  }
};

function _deepEqual(actual, expected) {
  // 7.1. All identical values are equivalent, as determined by ===.
  if (actual === expected) {
    return true;

  } else if (util.isBuffer(actual) && util.isBuffer(expected)) {
    if (actual.length != expected.length) return false;

    for (var i = 0; i < actual.length; i++) {
      if (actual[i] !== expected[i]) return false;
    }

    return true;

  // 7.2. If the expected value is a Date object, the actual value is
  // equivalent if it is also a Date object that refers to the same time.
  } else if (util.isDate(actual) && util.isDate(expected)) {
    return actual.getTime() === expected.getTime();

  // 7.3 If the expected value is a RegExp object, the actual value is
  // equivalent if it is also a RegExp object with the same source and
  // properties (`global`, `multiline`, `lastIndex`, `ignoreCase`).
  } else if (util.isRegExp(actual) && util.isRegExp(expected)) {
    return actual.source === expected.source &&
           actual.global === expected.global &&
           actual.multiline === expected.multiline &&
           actual.lastIndex === expected.lastIndex &&
           actual.ignoreCase === expected.ignoreCase;

  // 7.4. Other pairs that do not both pass typeof value == 'object',
  // equivalence is determined by ==.
  } else if (!util.isObject(actual) && !util.isObject(expected)) {
    return actual == expected;

  // 7.5 For all other Object pairs, including Array objects, equivalence is
  // determined by having the same number of owned properties (as verified
  // with Object.prototype.hasOwnProperty.call), the same set of keys
  // (although not necessarily the same order), equivalent values for every
  // corresponding key, and an identical 'prototype' property. Note: this
  // accounts for both named and indexed properties on Arrays.
  } else {
    return objEquiv(actual, expected);
  }
}

function isArguments(object) {
  return Object.prototype.toString.call(object) == '[object Arguments]';
}

function objEquiv(a, b) {
  if (util.isNullOrUndefined(a) || util.isNullOrUndefined(b))
    return false;
  // an identical 'prototype' property.
  if (a.prototype !== b.prototype) return false;
  // if one is a primitive, the other must be same
  if (util.isPrimitive(a) || util.isPrimitive(b)) {
    return a === b;
  }
  var aIsArgs = isArguments(a),
      bIsArgs = isArguments(b);
  if ((aIsArgs && !bIsArgs) || (!aIsArgs && bIsArgs))
    return false;
  if (aIsArgs) {
    a = pSlice.call(a);
    b = pSlice.call(b);
    return _deepEqual(a, b);
  }
  var ka = objectKeys(a),
      kb = objectKeys(b),
      key, i;
  // having the same number of owned properties (keys incorporates
  // hasOwnProperty)
  if (ka.length != kb.length)
    return false;
  //the same set of keys (although not necessarily the same order),
  ka.sort();
  kb.sort();
  //~~~cheap key test
  for (i = ka.length - 1; i >= 0; i--) {
    if (ka[i] != kb[i])
      return false;
  }
  //equivalent values for every corresponding key, and
  //~~~possibly expensive deep test
  for (i = ka.length - 1; i >= 0; i--) {
    key = ka[i];
    if (!_deepEqual(a[key], b[key])) return false;
  }
  return true;
}

// 8. The non-equivalence assertion tests for any deep inequality.
// assert.notDeepEqual(actual, expected, message_opt);

assert.notDeepEqual = function notDeepEqual(actual, expected, message) {
  if (_deepEqual(actual, expected)) {
    fail(actual, expected, message, 'notDeepEqual', assert.notDeepEqual);
  }
};

// 9. The strict equality assertion tests strict equality, as determined by ===.
// assert.strictEqual(actual, expected, message_opt);

assert.strictEqual = function strictEqual(actual, expected, message) {
  if (actual !== expected) {
    fail(actual, expected, message, '===', assert.strictEqual);
  }
};

// 10. The strict non-equality assertion tests for strict inequality, as
// determined by !==.  assert.notStrictEqual(actual, expected, message_opt);

assert.notStrictEqual = function notStrictEqual(actual, expected, message) {
  if (actual === expected) {
    fail(actual, expected, message, '!==', assert.notStrictEqual);
  }
};

function expectedException(actual, expected) {
  if (!actual || !expected) {
    return false;
  }

  if (Object.prototype.toString.call(expected) == '[object RegExp]') {
    return expected.test(actual);
  } else if (actual instanceof expected) {
    return true;
  } else if (expected.call({}, actual) === true) {
    return true;
  }

  return false;
}

function _throws(shouldThrow, block, expected, message) {
  var actual;

  if (util.isString(expected)) {
    message = expected;
    expected = null;
  }

  try {
    block();
  } catch (e) {
    actual = e;
  }

  message = (expected && expected.name ? ' (' + expected.name + ').' : '.') +
            (message ? ' ' + message : '.');

  if (shouldThrow && !actual) {
    fail(actual, expected, 'Missing expected exception' + message);
  }

  if (!shouldThrow && expectedException(actual, expected)) {
    fail(actual, expected, 'Got unwanted exception' + message);
  }

  if ((shouldThrow && actual && expected &&
      !expectedException(actual, expected)) || (!shouldThrow && actual)) {
    throw actual;
  }
}

// 11. Expected to throw an error:
// assert.throws(block, Error_opt, message_opt);

assert.throws = function(block, /*optional*/error, /*optional*/message) {
  _throws.apply(this, [true].concat(pSlice.call(arguments)));
};

// EXTENSION! This is annoying to write outside this module.
assert.doesNotThrow = function(block, /*optional*/message) {
  _throws.apply(this, [false].concat(pSlice.call(arguments)));
};

assert.ifError = function(err) { if (err) {throw err;}};

var objectKeys = Object.keys || function (obj) {
  var keys = [];
  for (var key in obj) {
    if (hasOwn.call(obj, key)) keys.push(key);
  }
  return keys;
};

},{"util/":216}],191:[function(require,module,exports){
arguments[4][189][0].apply(exports,arguments)
},{"dup":189}],192:[function(require,module,exports){
/*!
 * The buffer module from node.js, for the browser.
 *
 * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
 * @license  MIT
 */

var base64 = require('base64-js')
var ieee754 = require('ieee754')
var isArray = require('is-array')

exports.Buffer = Buffer
exports.SlowBuffer = SlowBuffer
exports.INSPECT_MAX_BYTES = 50
Buffer.poolSize = 8192 // not used by this implementation

var kMaxLength = 0x3fffffff
var rootParent = {}

/**
 * If `Buffer.TYPED_ARRAY_SUPPORT`:
 *   === true    Use Uint8Array implementation (fastest)
 *   === false   Use Object implementation (most compatible, even IE6)
 *
 * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
 * Opera 11.6+, iOS 4.2+.
 *
 * Note:
 *
 * - Implementation must support adding new properties to `Uint8Array` instances.
 *   Firefox 4-29 lacked support, fixed in Firefox 30+.
 *   See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438.
 *
 *  - Chrome 9-10 is missing the `TypedArray.prototype.subarray` function.
 *
 *  - IE10 has a broken `TypedArray.prototype.subarray` function which returns arrays of
 *    incorrect length in some situations.
 *
 * We detect these buggy browsers and set `Buffer.TYPED_ARRAY_SUPPORT` to `false` so they will
 * get the Object implementation, which is slower but will work correctly.
 */
Buffer.TYPED_ARRAY_SUPPORT = (function () {
  try {
    var buf = new ArrayBuffer(0)
    var arr = new Uint8Array(buf)
    arr.foo = function () { return 42 }
    return arr.foo() === 42 && // typed array instances can be augmented
        typeof arr.subarray === 'function' && // chrome 9-10 lack `subarray`
        new Uint8Array(1).subarray(1, 1).byteLength === 0 // ie10 has broken `subarray`
  } catch (e) {
    return false
  }
})()

/**
 * Class: Buffer
 * =============
 *
 * The Buffer constructor returns instances of `Uint8Array` that are augmented
 * with function properties for all the node `Buffer` API functions. We use
 * `Uint8Array` so that square bracket notation works as expected -- it returns
 * a single octet.
 *
 * By augmenting the instances, we can avoid modifying the `Uint8Array`
 * prototype.
 */
function Buffer (subject, encoding) {
  var self = this
  if (!(self instanceof Buffer)) return new Buffer(subject, encoding)

  var type = typeof subject
  var length

  if (type === 'number') {
    length = +subject
  } else if (type === 'string') {
    length = Buffer.byteLength(subject, encoding)
  } else if (type === 'object' && subject !== null) {
    // assume object is array-like
    if (subject.type === 'Buffer' && isArray(subject.data)) subject = subject.data
    length = +subject.length
  } else {
    throw new TypeError('must start with number, buffer, array or string')
  }

  if (length > kMaxLength) {
    throw new RangeError('Attempt to allocate Buffer larger than maximum size: 0x' +
      kMaxLength.toString(16) + ' bytes')
  }

  if (length < 0) length = 0
  else length >>>= 0 // coerce to uint32

  if (Buffer.TYPED_ARRAY_SUPPORT) {
    // Preferred: Return an augmented `Uint8Array` instance for best performance
    self = Buffer._augment(new Uint8Array(length)) // eslint-disable-line consistent-this
  } else {
    // Fallback: Return THIS instance of Buffer (created by `new`)
    self.length = length
    self._isBuffer = true
  }

  var i
  if (Buffer.TYPED_ARRAY_SUPPORT && typeof subject.byteLength === 'number') {
    // Speed optimization -- use set if we're copying from a typed array
    self._set(subject)
  } else if (isArrayish(subject)) {
    // Treat array-ish objects as a byte array
    if (Buffer.isBuffer(subject)) {
      for (i = 0; i < length; i++) {
        self[i] = subject.readUInt8(i)
      }
    } else {
      for (i = 0; i < length; i++) {
        self[i] = ((subject[i] % 256) + 256) % 256
      }
    }
  } else if (type === 'string') {
    self.write(subject, 0, encoding)
  } else if (type === 'number' && !Buffer.TYPED_ARRAY_SUPPORT) {
    for (i = 0; i < length; i++) {
      self[i] = 0
    }
  }

  if (length > 0 && length <= Buffer.poolSize) self.parent = rootParent

  return self
}

function SlowBuffer (subject, encoding) {
  if (!(this instanceof SlowBuffer)) return new SlowBuffer(subject, encoding)

  var buf = new Buffer(subject, encoding)
  delete buf.parent
  return buf
}

Buffer.isBuffer = function isBuffer (b) {
  return !!(b != null && b._isBuffer)
}

Buffer.compare = function compare (a, b) {
  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
    throw new TypeError('Arguments must be Buffers')
  }

  if (a === b) return 0

  var x = a.length
  var y = b.length
  for (var i = 0, len = Math.min(x, y); i < len && a[i] === b[i]; i++) {}
  if (i !== len) {
    x = a[i]
    y = b[i]
  }
  if (x < y) return -1
  if (y < x) return 1
  return 0
}

Buffer.isEncoding = function isEncoding (encoding) {
  switch (String(encoding).toLowerCase()) {
    case 'hex':
    case 'utf8':
    case 'utf-8':
    case 'ascii':
    case 'binary':
    case 'base64':
    case 'raw':
    case 'ucs2':
    case 'ucs-2':
    case 'utf16le':
    case 'utf-16le':
      return true
    default:
      return false
  }
}

Buffer.concat = function concat (list, totalLength) {
  if (!isArray(list)) throw new TypeError('list argument must be an Array of Buffers.')

  if (list.length === 0) {
    return new Buffer(0)
  } else if (list.length === 1) {
    return list[0]
  }

  var i
  if (totalLength === undefined) {
    totalLength = 0
    for (i = 0; i < list.length; i++) {
      totalLength += list[i].length
    }
  }

  var buf = new Buffer(totalLength)
  var pos = 0
  for (i = 0; i < list.length; i++) {
    var item = list[i]
    item.copy(buf, pos)
    pos += item.length
  }
  return buf
}

Buffer.byteLength = function byteLength (str, encoding) {
  var ret
  str = str + ''
  switch (encoding || 'utf8') {
    case 'ascii':
    case 'binary':
    case 'raw':
      ret = str.length
      break
    case 'ucs2':
    case 'ucs-2':
    case 'utf16le':
    case 'utf-16le':
      ret = str.length * 2
      break
    case 'hex':
      ret = str.length >>> 1
      break
    case 'utf8':
    case 'utf-8':
      ret = utf8ToBytes(str).length
      break
    case 'base64':
      ret = base64ToBytes(str).length
      break
    default:
      ret = str.length
  }
  return ret
}

// pre-set for values that may exist in the future
Buffer.prototype.length = undefined
Buffer.prototype.parent = undefined

// toString(encoding, start=0, end=buffer.length)
Buffer.prototype.toString = function toString (encoding, start, end) {
  var loweredCase = false

  start = start >>> 0
  end = end === undefined || end === Infinity ? this.length : end >>> 0

  if (!encoding) encoding = 'utf8'
  if (start < 0) start = 0
  if (end > this.length) end = this.length
  if (end <= start) return ''

  while (true) {
    switch (encoding) {
      case 'hex':
        return hexSlice(this, start, end)

      case 'utf8':
      case 'utf-8':
        return utf8Slice(this, start, end)

      case 'ascii':
        return asciiSlice(this, start, end)

      case 'binary':
        return binarySlice(this, start, end)

      case 'base64':
        return base64Slice(this, start, end)

      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return utf16leSlice(this, start, end)

      default:
        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
        encoding = (encoding + '').toLowerCase()
        loweredCase = true
    }
  }
}

Buffer.prototype.equals = function equals (b) {
  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
  if (this === b) return true
  return Buffer.compare(this, b) === 0
}

Buffer.prototype.inspect = function inspect () {
  var str = ''
  var max = exports.INSPECT_MAX_BYTES
  if (this.length > 0) {
    str = this.toString('hex', 0, max).match(/.{2}/g).join(' ')
    if (this.length > max) str += ' ... '
  }
  return '<Buffer ' + str + '>'
}

Buffer.prototype.compare = function compare (b) {
  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
  if (this === b) return 0
  return Buffer.compare(this, b)
}

Buffer.prototype.indexOf = function indexOf (val, byteOffset) {
  if (byteOffset > 0x7fffffff) byteOffset = 0x7fffffff
  else if (byteOffset < -0x80000000) byteOffset = -0x80000000
  byteOffset >>= 0

  if (this.length === 0) return -1
  if (byteOffset >= this.length) return -1

  // Negative offsets start from the end of the buffer
  if (byteOffset < 0) byteOffset = Math.max(this.length + byteOffset, 0)

  if (typeof val === 'string') {
    if (val.length === 0) return -1 // special case: looking for empty string always fails
    return String.prototype.indexOf.call(this, val, byteOffset)
  }
  if (Buffer.isBuffer(val)) {
    return arrayIndexOf(this, val, byteOffset)
  }
  if (typeof val === 'number') {
    if (Buffer.TYPED_ARRAY_SUPPORT && Uint8Array.prototype.indexOf === 'function') {
      return Uint8Array.prototype.indexOf.call(this, val, byteOffset)
    }
    return arrayIndexOf(this, [ val ], byteOffset)
  }

  function arrayIndexOf (arr, val, byteOffset) {
    var foundIndex = -1
    for (var i = 0; byteOffset + i < arr.length; i++) {
      if (arr[byteOffset + i] === val[foundIndex === -1 ? 0 : i - foundIndex]) {
        if (foundIndex === -1) foundIndex = i
        if (i - foundIndex + 1 === val.length) return byteOffset + foundIndex
      } else {
        foundIndex = -1
      }
    }
    return -1
  }

  throw new TypeError('val must be string, number or Buffer')
}

// `get` will be removed in Node 0.13+
Buffer.prototype.get = function get (offset) {
  console.log('.get() is deprecated. Access using array indexes instead.')
  return this.readUInt8(offset)
}

// `set` will be removed in Node 0.13+
Buffer.prototype.set = function set (v, offset) {
  console.log('.set() is deprecated. Access using array indexes instead.')
  return this.writeUInt8(v, offset)
}

function hexWrite (buf, string, offset, length) {
  offset = Number(offset) || 0
  var remaining = buf.length - offset
  if (!length) {
    length = remaining
  } else {
    length = Number(length)
    if (length > remaining) {
      length = remaining
    }
  }

  // must be an even number of digits
  var strLen = string.length
  if (strLen % 2 !== 0) throw new Error('Invalid hex string')

  if (length > strLen / 2) {
    length = strLen / 2
  }
  for (var i = 0; i < length; i++) {
    var parsed = parseInt(string.substr(i * 2, 2), 16)
    if (isNaN(parsed)) throw new Error('Invalid hex string')
    buf[offset + i] = parsed
  }
  return i
}

function utf8Write (buf, string, offset, length) {
  var charsWritten = blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)
  return charsWritten
}

function asciiWrite (buf, string, offset, length) {
  var charsWritten = blitBuffer(asciiToBytes(string), buf, offset, length)
  return charsWritten
}

function binaryWrite (buf, string, offset, length) {
  return asciiWrite(buf, string, offset, length)
}

function base64Write (buf, string, offset, length) {
  var charsWritten = blitBuffer(base64ToBytes(string), buf, offset, length)
  return charsWritten
}

function utf16leWrite (buf, string, offset, length) {
  var charsWritten = blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)
  return charsWritten
}

Buffer.prototype.write = function write (string, offset, length, encoding) {
  // Support both (string, offset, length, encoding)
  // and the legacy (string, encoding, offset, length)
  if (isFinite(offset)) {
    if (!isFinite(length)) {
      encoding = length
      length = undefined
    }
  } else {  // legacy
    var swap = encoding
    encoding = offset
    offset = length
    length = swap
  }

  offset = Number(offset) || 0

  if (length < 0 || offset < 0 || offset > this.length) {
    throw new RangeError('attempt to write outside buffer bounds')
  }

  var remaining = this.length - offset
  if (!length) {
    length = remaining
  } else {
    length = Number(length)
    if (length > remaining) {
      length = remaining
    }
  }
  encoding = String(encoding || 'utf8').toLowerCase()

  var ret
  switch (encoding) {
    case 'hex':
      ret = hexWrite(this, string, offset, length)
      break
    case 'utf8':
    case 'utf-8':
      ret = utf8Write(this, string, offset, length)
      break
    case 'ascii':
      ret = asciiWrite(this, string, offset, length)
      break
    case 'binary':
      ret = binaryWrite(this, string, offset, length)
      break
    case 'base64':
      ret = base64Write(this, string, offset, length)
      break
    case 'ucs2':
    case 'ucs-2':
    case 'utf16le':
    case 'utf-16le':
      ret = utf16leWrite(this, string, offset, length)
      break
    default:
      throw new TypeError('Unknown encoding: ' + encoding)
  }
  return ret
}

Buffer.prototype.toJSON = function toJSON () {
  return {
    type: 'Buffer',
    data: Array.prototype.slice.call(this._arr || this, 0)
  }
}

function base64Slice (buf, start, end) {
  if (start === 0 && end === buf.length) {
    return base64.fromByteArray(buf)
  } else {
    return base64.fromByteArray(buf.slice(start, end))
  }
}

function utf8Slice (buf, start, end) {
  var res = ''
  var tmp = ''
  end = Math.min(buf.length, end)

  for (var i = start; i < end; i++) {
    if (buf[i] <= 0x7F) {
      res += decodeUtf8Char(tmp) + String.fromCharCode(buf[i])
      tmp = ''
    } else {
      tmp += '%' + buf[i].toString(16)
    }
  }

  return res + decodeUtf8Char(tmp)
}

function asciiSlice (buf, start, end) {
  var ret = ''
  end = Math.min(buf.length, end)

  for (var i = start; i < end; i++) {
    ret += String.fromCharCode(buf[i] & 0x7F)
  }
  return ret
}

function binarySlice (buf, start, end) {
  var ret = ''
  end = Math.min(buf.length, end)

  for (var i = start; i < end; i++) {
    ret += String.fromCharCode(buf[i])
  }
  return ret
}

function hexSlice (buf, start, end) {
  var len = buf.length

  if (!start || start < 0) start = 0
  if (!end || end < 0 || end > len) end = len

  var out = ''
  for (var i = start; i < end; i++) {
    out += toHex(buf[i])
  }
  return out
}

function utf16leSlice (buf, start, end) {
  var bytes = buf.slice(start, end)
  var res = ''
  for (var i = 0; i < bytes.length; i += 2) {
    res += String.fromCharCode(bytes[i] + bytes[i + 1] * 256)
  }
  return res
}

Buffer.prototype.slice = function slice (start, end) {
  var len = this.length
  start = ~~start
  end = end === undefined ? len : ~~end

  if (start < 0) {
    start += len
    if (start < 0) start = 0
  } else if (start > len) {
    start = len
  }

  if (end < 0) {
    end += len
    if (end < 0) end = 0
  } else if (end > len) {
    end = len
  }

  if (end < start) end = start

  var newBuf
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    newBuf = Buffer._augment(this.subarray(start, end))
  } else {
    var sliceLen = end - start
    newBuf = new Buffer(sliceLen, undefined)
    for (var i = 0; i < sliceLen; i++) {
      newBuf[i] = this[i + start]
    }
  }

  if (newBuf.length) newBuf.parent = this.parent || this

  return newBuf
}

/*
 * Need to make sure that buffer isn't trying to write out of bounds.
 */
function checkOffset (offset, ext, length) {
  if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')
  if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')
}

Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) checkOffset(offset, byteLength, this.length)

  var val = this[offset]
  var mul = 1
  var i = 0
  while (++i < byteLength && (mul *= 0x100)) {
    val += this[offset + i] * mul
  }

  return val
}

Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) {
    checkOffset(offset, byteLength, this.length)
  }

  var val = this[offset + --byteLength]
  var mul = 1
  while (byteLength > 0 && (mul *= 0x100)) {
    val += this[offset + --byteLength] * mul
  }

  return val
}

Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 1, this.length)
  return this[offset]
}

Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 2, this.length)
  return this[offset] | (this[offset + 1] << 8)
}

Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 2, this.length)
  return (this[offset] << 8) | this[offset + 1]
}

Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 4, this.length)

  return ((this[offset]) |
      (this[offset + 1] << 8) |
      (this[offset + 2] << 16)) +
      (this[offset + 3] * 0x1000000)
}

Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 4, this.length)

  return (this[offset] * 0x1000000) +
    ((this[offset + 1] << 16) |
    (this[offset + 2] << 8) |
    this[offset + 3])
}

Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) checkOffset(offset, byteLength, this.length)

  var val = this[offset]
  var mul = 1
  var i = 0
  while (++i < byteLength && (mul *= 0x100)) {
    val += this[offset + i] * mul
  }
  mul *= 0x80

  if (val >= mul) val -= Math.pow(2, 8 * byteLength)

  return val
}

Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) checkOffset(offset, byteLength, this.length)

  var i = byteLength
  var mul = 1
  var val = this[offset + --i]
  while (i > 0 && (mul *= 0x100)) {
    val += this[offset + --i] * mul
  }
  mul *= 0x80

  if (val >= mul) val -= Math.pow(2, 8 * byteLength)

  return val
}

Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 1, this.length)
  if (!(this[offset] & 0x80)) return (this[offset])
  return ((0xff - this[offset] + 1) * -1)
}

Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 2, this.length)
  var val = this[offset] | (this[offset + 1] << 8)
  return (val & 0x8000) ? val | 0xFFFF0000 : val
}

Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 2, this.length)
  var val = this[offset + 1] | (this[offset] << 8)
  return (val & 0x8000) ? val | 0xFFFF0000 : val
}

Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 4, this.length)

  return (this[offset]) |
    (this[offset + 1] << 8) |
    (this[offset + 2] << 16) |
    (this[offset + 3] << 24)
}

Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 4, this.length)

  return (this[offset] << 24) |
    (this[offset + 1] << 16) |
    (this[offset + 2] << 8) |
    (this[offset + 3])
}

Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 4, this.length)
  return ieee754.read(this, offset, true, 23, 4)
}

Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 4, this.length)
  return ieee754.read(this, offset, false, 23, 4)
}

Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 8, this.length)
  return ieee754.read(this, offset, true, 52, 8)
}

Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
  if (!noAssert) checkOffset(offset, 8, this.length)
  return ieee754.read(this, offset, false, 52, 8)
}

function checkInt (buf, value, offset, ext, max, min) {
  if (!Buffer.isBuffer(buf)) throw new TypeError('buffer must be a Buffer instance')
  if (value > max || value < min) throw new RangeError('value is out of bounds')
  if (offset + ext > buf.length) throw new RangeError('index out of range')
}

Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) checkInt(this, value, offset, byteLength, Math.pow(2, 8 * byteLength), 0)

  var mul = 1
  var i = 0
  this[offset] = value & 0xFF
  while (++i < byteLength && (mul *= 0x100)) {
    this[offset + i] = (value / mul) >>> 0 & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) checkInt(this, value, offset, byteLength, Math.pow(2, 8 * byteLength), 0)

  var i = byteLength - 1
  var mul = 1
  this[offset + i] = value & 0xFF
  while (--i >= 0 && (mul *= 0x100)) {
    this[offset + i] = (value / mul) >>> 0 & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)
  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
  this[offset] = value
  return offset + 1
}

function objectWriteUInt16 (buf, value, offset, littleEndian) {
  if (value < 0) value = 0xffff + value + 1
  for (var i = 0, j = Math.min(buf.length - offset, 2); i < j; i++) {
    buf[offset + i] = (value & (0xff << (8 * (littleEndian ? i : 1 - i)))) >>>
      (littleEndian ? i : 1 - i) * 8
  }
}

Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = value
    this[offset + 1] = (value >>> 8)
  } else {
    objectWriteUInt16(this, value, offset, true)
  }
  return offset + 2
}

Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value >>> 8)
    this[offset + 1] = value
  } else {
    objectWriteUInt16(this, value, offset, false)
  }
  return offset + 2
}

function objectWriteUInt32 (buf, value, offset, littleEndian) {
  if (value < 0) value = 0xffffffff + value + 1
  for (var i = 0, j = Math.min(buf.length - offset, 4); i < j; i++) {
    buf[offset + i] = (value >>> (littleEndian ? i : 3 - i) * 8) & 0xff
  }
}

Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset + 3] = (value >>> 24)
    this[offset + 2] = (value >>> 16)
    this[offset + 1] = (value >>> 8)
    this[offset] = value
  } else {
    objectWriteUInt32(this, value, offset, true)
  }
  return offset + 4
}

Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value >>> 24)
    this[offset + 1] = (value >>> 16)
    this[offset + 2] = (value >>> 8)
    this[offset + 3] = value
  } else {
    objectWriteUInt32(this, value, offset, false)
  }
  return offset + 4
}

Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) {
    checkInt(
      this, value, offset, byteLength,
      Math.pow(2, 8 * byteLength - 1) - 1,
      -Math.pow(2, 8 * byteLength - 1)
    )
  }

  var i = 0
  var mul = 1
  var sub = value < 0 ? 1 : 0
  this[offset] = value & 0xFF
  while (++i < byteLength && (mul *= 0x100)) {
    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) {
    checkInt(
      this, value, offset, byteLength,
      Math.pow(2, 8 * byteLength - 1) - 1,
      -Math.pow(2, 8 * byteLength - 1)
    )
  }

  var i = byteLength - 1
  var mul = 1
  var sub = value < 0 ? 1 : 0
  this[offset + i] = value & 0xFF
  while (--i >= 0 && (mul *= 0x100)) {
    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)
  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
  if (value < 0) value = 0xff + value + 1
  this[offset] = value
  return offset + 1
}

Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = value
    this[offset + 1] = (value >>> 8)
  } else {
    objectWriteUInt16(this, value, offset, true)
  }
  return offset + 2
}

Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value >>> 8)
    this[offset + 1] = value
  } else {
    objectWriteUInt16(this, value, offset, false)
  }
  return offset + 2
}

Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = value
    this[offset + 1] = (value >>> 8)
    this[offset + 2] = (value >>> 16)
    this[offset + 3] = (value >>> 24)
  } else {
    objectWriteUInt32(this, value, offset, true)
  }
  return offset + 4
}

Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
  if (value < 0) value = 0xffffffff + value + 1
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    this[offset] = (value >>> 24)
    this[offset + 1] = (value >>> 16)
    this[offset + 2] = (value >>> 8)
    this[offset + 3] = value
  } else {
    objectWriteUInt32(this, value, offset, false)
  }
  return offset + 4
}

function checkIEEE754 (buf, value, offset, ext, max, min) {
  if (value > max || value < min) throw new RangeError('value is out of bounds')
  if (offset + ext > buf.length) throw new RangeError('index out of range')
  if (offset < 0) throw new RangeError('index out of range')
}

function writeFloat (buf, value, offset, littleEndian, noAssert) {
  if (!noAssert) {
    checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)
  }
  ieee754.write(buf, value, offset, littleEndian, 23, 4)
  return offset + 4
}

Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {
  return writeFloat(this, value, offset, true, noAssert)
}

Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {
  return writeFloat(this, value, offset, false, noAssert)
}

function writeDouble (buf, value, offset, littleEndian, noAssert) {
  if (!noAssert) {
    checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)
  }
  ieee754.write(buf, value, offset, littleEndian, 52, 8)
  return offset + 8
}

Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {
  return writeDouble(this, value, offset, true, noAssert)
}

Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {
  return writeDouble(this, value, offset, false, noAssert)
}

// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
Buffer.prototype.copy = function copy (target, target_start, start, end) {
  if (!start) start = 0
  if (!end && end !== 0) end = this.length
  if (target_start >= target.length) target_start = target.length
  if (!target_start) target_start = 0
  if (end > 0 && end < start) end = start

  // Copy 0 bytes; we're done
  if (end === start) return 0
  if (target.length === 0 || this.length === 0) return 0

  // Fatal error conditions
  if (target_start < 0) {
    throw new RangeError('targetStart out of bounds')
  }
  if (start < 0 || start >= this.length) throw new RangeError('sourceStart out of bounds')
  if (end < 0) throw new RangeError('sourceEnd out of bounds')

  // Are we oob?
  if (end > this.length) end = this.length
  if (target.length - target_start < end - start) {
    end = target.length - target_start + start
  }

  var len = end - start

  if (len < 1000 || !Buffer.TYPED_ARRAY_SUPPORT) {
    for (var i = 0; i < len; i++) {
      target[i + target_start] = this[i + start]
    }
  } else {
    target._set(this.subarray(start, start + len), target_start)
  }

  return len
}

// fill(value, start=0, end=buffer.length)
Buffer.prototype.fill = function fill (value, start, end) {
  if (!value) value = 0
  if (!start) start = 0
  if (!end) end = this.length

  if (end < start) throw new RangeError('end < start')

  // Fill 0 bytes; we're done
  if (end === start) return
  if (this.length === 0) return

  if (start < 0 || start >= this.length) throw new RangeError('start out of bounds')
  if (end < 0 || end > this.length) throw new RangeError('end out of bounds')

  var i
  if (typeof value === 'number') {
    for (i = start; i < end; i++) {
      this[i] = value
    }
  } else {
    var bytes = utf8ToBytes(value.toString())
    var len = bytes.length
    for (i = start; i < end; i++) {
      this[i] = bytes[i % len]
    }
  }

  return this
}

/**
 * Creates a new `ArrayBuffer` with the *copied* memory of the buffer instance.
 * Added in Node 0.12. Only available in browsers that support ArrayBuffer.
 */
Buffer.prototype.toArrayBuffer = function toArrayBuffer () {
  if (typeof Uint8Array !== 'undefined') {
    if (Buffer.TYPED_ARRAY_SUPPORT) {
      return (new Buffer(this)).buffer
    } else {
      var buf = new Uint8Array(this.length)
      for (var i = 0, len = buf.length; i < len; i += 1) {
        buf[i] = this[i]
      }
      return buf.buffer
    }
  } else {
    throw new TypeError('Buffer.toArrayBuffer not supported in this browser')
  }
}

// HELPER FUNCTIONS
// ================

var BP = Buffer.prototype

/**
 * Augment a Uint8Array *instance* (not the Uint8Array class!) with Buffer methods
 */
Buffer._augment = function _augment (arr) {
  arr.constructor = Buffer
  arr._isBuffer = true

  // save reference to original Uint8Array set method before overwriting
  arr._set = arr.set

  // deprecated, will be removed in node 0.13+
  arr.get = BP.get
  arr.set = BP.set

  arr.write = BP.write
  arr.toString = BP.toString
  arr.toLocaleString = BP.toString
  arr.toJSON = BP.toJSON
  arr.equals = BP.equals
  arr.compare = BP.compare
  arr.indexOf = BP.indexOf
  arr.copy = BP.copy
  arr.slice = BP.slice
  arr.readUIntLE = BP.readUIntLE
  arr.readUIntBE = BP.readUIntBE
  arr.readUInt8 = BP.readUInt8
  arr.readUInt16LE = BP.readUInt16LE
  arr.readUInt16BE = BP.readUInt16BE
  arr.readUInt32LE = BP.readUInt32LE
  arr.readUInt32BE = BP.readUInt32BE
  arr.readIntLE = BP.readIntLE
  arr.readIntBE = BP.readIntBE
  arr.readInt8 = BP.readInt8
  arr.readInt16LE = BP.readInt16LE
  arr.readInt16BE = BP.readInt16BE
  arr.readInt32LE = BP.readInt32LE
  arr.readInt32BE = BP.readInt32BE
  arr.readFloatLE = BP.readFloatLE
  arr.readFloatBE = BP.readFloatBE
  arr.readDoubleLE = BP.readDoubleLE
  arr.readDoubleBE = BP.readDoubleBE
  arr.writeUInt8 = BP.writeUInt8
  arr.writeUIntLE = BP.writeUIntLE
  arr.writeUIntBE = BP.writeUIntBE
  arr.writeUInt16LE = BP.writeUInt16LE
  arr.writeUInt16BE = BP.writeUInt16BE
  arr.writeUInt32LE = BP.writeUInt32LE
  arr.writeUInt32BE = BP.writeUInt32BE
  arr.writeIntLE = BP.writeIntLE
  arr.writeIntBE = BP.writeIntBE
  arr.writeInt8 = BP.writeInt8
  arr.writeInt16LE = BP.writeInt16LE
  arr.writeInt16BE = BP.writeInt16BE
  arr.writeInt32LE = BP.writeInt32LE
  arr.writeInt32BE = BP.writeInt32BE
  arr.writeFloatLE = BP.writeFloatLE
  arr.writeFloatBE = BP.writeFloatBE
  arr.writeDoubleLE = BP.writeDoubleLE
  arr.writeDoubleBE = BP.writeDoubleBE
  arr.fill = BP.fill
  arr.inspect = BP.inspect
  arr.toArrayBuffer = BP.toArrayBuffer

  return arr
}

var INVALID_BASE64_RE = /[^+\/0-9A-z\-]/g

function base64clean (str) {
  // Node strips out invalid characters like \n and \t from the string, base64-js does not
  str = stringtrim(str).replace(INVALID_BASE64_RE, '')
  // Node converts strings with length < 2 to ''
  if (str.length < 2) return ''
  // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
  while (str.length % 4 !== 0) {
    str = str + '='
  }
  return str
}

function stringtrim (str) {
  if (str.trim) return str.trim()
  return str.replace(/^\s+|\s+$/g, '')
}

function isArrayish (subject) {
  return isArray(subject) || Buffer.isBuffer(subject) ||
      subject && typeof subject === 'object' &&
      typeof subject.length === 'number'
}

function toHex (n) {
  if (n < 16) return '0' + n.toString(16)
  return n.toString(16)
}

function utf8ToBytes (string, units) {
  units = units || Infinity
  var codePoint
  var length = string.length
  var leadSurrogate = null
  var bytes = []
  var i = 0

  for (; i < length; i++) {
    codePoint = string.charCodeAt(i)

    // is surrogate component
    if (codePoint > 0xD7FF && codePoint < 0xE000) {
      // last char was a lead
      if (leadSurrogate) {
        // 2 leads in a row
        if (codePoint < 0xDC00) {
          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
          leadSurrogate = codePoint
          continue
        } else {
          // valid surrogate pair
          codePoint = leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00 | 0x10000
          leadSurrogate = null
        }
      } else {
        // no lead yet

        if (codePoint > 0xDBFF) {
          // unexpected trail
          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
          continue
        } else if (i + 1 === length) {
          // unpaired lead
          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
          continue
        } else {
          // valid lead
          leadSurrogate = codePoint
          continue
        }
      }
    } else if (leadSurrogate) {
      // valid bmp char, but last char was a lead
      if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
      leadSurrogate = null
    }

    // encode utf8
    if (codePoint < 0x80) {
      if ((units -= 1) < 0) break
      bytes.push(codePoint)
    } else if (codePoint < 0x800) {
      if ((units -= 2) < 0) break
      bytes.push(
        codePoint >> 0x6 | 0xC0,
        codePoint & 0x3F | 0x80
      )
    } else if (codePoint < 0x10000) {
      if ((units -= 3) < 0) break
      bytes.push(
        codePoint >> 0xC | 0xE0,
        codePoint >> 0x6 & 0x3F | 0x80,
        codePoint & 0x3F | 0x80
      )
    } else if (codePoint < 0x200000) {
      if ((units -= 4) < 0) break
      bytes.push(
        codePoint >> 0x12 | 0xF0,
        codePoint >> 0xC & 0x3F | 0x80,
        codePoint >> 0x6 & 0x3F | 0x80,
        codePoint & 0x3F | 0x80
      )
    } else {
      throw new Error('Invalid code point')
    }
  }

  return bytes
}

function asciiToBytes (str) {
  var byteArray = []
  for (var i = 0; i < str.length; i++) {
    // Node's code seems to be doing this and not & 0x7F..
    byteArray.push(str.charCodeAt(i) & 0xFF)
  }
  return byteArray
}

function utf16leToBytes (str, units) {
  var c, hi, lo
  var byteArray = []
  for (var i = 0; i < str.length; i++) {
    if ((units -= 2) < 0) break

    c = str.charCodeAt(i)
    hi = c >> 8
    lo = c % 256
    byteArray.push(lo)
    byteArray.push(hi)
  }

  return byteArray
}

function base64ToBytes (str) {
  return base64.toByteArray(base64clean(str))
}

function blitBuffer (src, dst, offset, length) {
  for (var i = 0; i < length; i++) {
    if ((i + offset >= dst.length) || (i >= src.length)) break
    dst[i + offset] = src[i]
  }
  return i
}

function decodeUtf8Char (str) {
  try {
    return decodeURIComponent(str)
  } catch (err) {
    return String.fromCharCode(0xFFFD) // UTF 8 invalid char
  }
}

},{"base64-js":193,"ieee754":194,"is-array":195}],193:[function(require,module,exports){
var lookup = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';

;(function (exports) {
	'use strict';

  var Arr = (typeof Uint8Array !== 'undefined')
    ? Uint8Array
    : Array

	var PLUS   = '+'.charCodeAt(0)
	var SLASH  = '/'.charCodeAt(0)
	var NUMBER = '0'.charCodeAt(0)
	var LOWER  = 'a'.charCodeAt(0)
	var UPPER  = 'A'.charCodeAt(0)
	var PLUS_URL_SAFE = '-'.charCodeAt(0)
	var SLASH_URL_SAFE = '_'.charCodeAt(0)

	function decode (elt) {
		var code = elt.charCodeAt(0)
		if (code === PLUS ||
		    code === PLUS_URL_SAFE)
			return 62 // '+'
		if (code === SLASH ||
		    code === SLASH_URL_SAFE)
			return 63 // '/'
		if (code < NUMBER)
			return -1 //no match
		if (code < NUMBER + 10)
			return code - NUMBER + 26 + 26
		if (code < UPPER + 26)
			return code - UPPER
		if (code < LOWER + 26)
			return code - LOWER + 26
	}

	function b64ToByteArray (b64) {
		var i, j, l, tmp, placeHolders, arr

		if (b64.length % 4 > 0) {
			throw new Error('Invalid string. Length must be a multiple of 4')
		}

		// the number of equal signs (place holders)
		// if there are two placeholders, than the two characters before it
		// represent one byte
		// if there is only one, then the three characters before it represent 2 bytes
		// this is just a cheap hack to not do indexOf twice
		var len = b64.length
		placeHolders = '=' === b64.charAt(len - 2) ? 2 : '=' === b64.charAt(len - 1) ? 1 : 0

		// base64 is 4/3 + up to two characters of the original data
		arr = new Arr(b64.length * 3 / 4 - placeHolders)

		// if there are placeholders, only get up to the last complete 4 chars
		l = placeHolders > 0 ? b64.length - 4 : b64.length

		var L = 0

		function push (v) {
			arr[L++] = v
		}

		for (i = 0, j = 0; i < l; i += 4, j += 3) {
			tmp = (decode(b64.charAt(i)) << 18) | (decode(b64.charAt(i + 1)) << 12) | (decode(b64.charAt(i + 2)) << 6) | decode(b64.charAt(i + 3))
			push((tmp & 0xFF0000) >> 16)
			push((tmp & 0xFF00) >> 8)
			push(tmp & 0xFF)
		}

		if (placeHolders === 2) {
			tmp = (decode(b64.charAt(i)) << 2) | (decode(b64.charAt(i + 1)) >> 4)
			push(tmp & 0xFF)
		} else if (placeHolders === 1) {
			tmp = (decode(b64.charAt(i)) << 10) | (decode(b64.charAt(i + 1)) << 4) | (decode(b64.charAt(i + 2)) >> 2)
			push((tmp >> 8) & 0xFF)
			push(tmp & 0xFF)
		}

		return arr
	}

	function uint8ToBase64 (uint8) {
		var i,
			extraBytes = uint8.length % 3, // if we have 1 byte left, pad 2 bytes
			output = "",
			temp, length

		function encode (num) {
			return lookup.charAt(num)
		}

		function tripletToBase64 (num) {
			return encode(num >> 18 & 0x3F) + encode(num >> 12 & 0x3F) + encode(num >> 6 & 0x3F) + encode(num & 0x3F)
		}

		// go through the array every three bytes, we'll deal with trailing stuff later
		for (i = 0, length = uint8.length - extraBytes; i < length; i += 3) {
			temp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2])
			output += tripletToBase64(temp)
		}

		// pad the end with zeros, but make sure to not forget the extra bytes
		switch (extraBytes) {
			case 1:
				temp = uint8[uint8.length - 1]
				output += encode(temp >> 2)
				output += encode((temp << 4) & 0x3F)
				output += '=='
				break
			case 2:
				temp = (uint8[uint8.length - 2] << 8) + (uint8[uint8.length - 1])
				output += encode(temp >> 10)
				output += encode((temp >> 4) & 0x3F)
				output += encode((temp << 2) & 0x3F)
				output += '='
				break
		}

		return output
	}

	exports.toByteArray = b64ToByteArray
	exports.fromByteArray = uint8ToBase64
}(typeof exports === 'undefined' ? (this.base64js = {}) : exports))

},{}],194:[function(require,module,exports){
exports.read = function(buffer, offset, isLE, mLen, nBytes) {
  var e, m,
      eLen = nBytes * 8 - mLen - 1,
      eMax = (1 << eLen) - 1,
      eBias = eMax >> 1,
      nBits = -7,
      i = isLE ? (nBytes - 1) : 0,
      d = isLE ? -1 : 1,
      s = buffer[offset + i];

  i += d;

  e = s & ((1 << (-nBits)) - 1);
  s >>= (-nBits);
  nBits += eLen;
  for (; nBits > 0; e = e * 256 + buffer[offset + i], i += d, nBits -= 8);

  m = e & ((1 << (-nBits)) - 1);
  e >>= (-nBits);
  nBits += mLen;
  for (; nBits > 0; m = m * 256 + buffer[offset + i], i += d, nBits -= 8);

  if (e === 0) {
    e = 1 - eBias;
  } else if (e === eMax) {
    return m ? NaN : ((s ? -1 : 1) * Infinity);
  } else {
    m = m + Math.pow(2, mLen);
    e = e - eBias;
  }
  return (s ? -1 : 1) * m * Math.pow(2, e - mLen);
};

exports.write = function(buffer, value, offset, isLE, mLen, nBytes) {
  var e, m, c,
      eLen = nBytes * 8 - mLen - 1,
      eMax = (1 << eLen) - 1,
      eBias = eMax >> 1,
      rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0),
      i = isLE ? 0 : (nBytes - 1),
      d = isLE ? 1 : -1,
      s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0;

  value = Math.abs(value);

  if (isNaN(value) || value === Infinity) {
    m = isNaN(value) ? 1 : 0;
    e = eMax;
  } else {
    e = Math.floor(Math.log(value) / Math.LN2);
    if (value * (c = Math.pow(2, -e)) < 1) {
      e--;
      c *= 2;
    }
    if (e + eBias >= 1) {
      value += rt / c;
    } else {
      value += rt * Math.pow(2, 1 - eBias);
    }
    if (value * c >= 2) {
      e++;
      c /= 2;
    }

    if (e + eBias >= eMax) {
      m = 0;
      e = eMax;
    } else if (e + eBias >= 1) {
      m = (value * c - 1) * Math.pow(2, mLen);
      e = e + eBias;
    } else {
      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen);
      e = 0;
    }
  }

  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8);

  e = (e << mLen) | m;
  eLen += mLen;
  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8);

  buffer[offset + i - d] |= s * 128;
};

},{}],195:[function(require,module,exports){

/**
 * isArray
 */

var isArray = Array.isArray;

/**
 * toString
 */

var str = Object.prototype.toString;

/**
 * Whether or not the given `val`
 * is an array.
 *
 * example:
 *
 *        isArray([]);
 *        // > true
 *        isArray(arguments);
 *        // > false
 *        isArray('');
 *        // > false
 *
 * @param {mixed} val
 * @return {bool}
 */

module.exports = isArray || function (val) {
  return !! val && '[object Array]' == str.call(val);
};

},{}],196:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

function EventEmitter() {
  this._events = this._events || {};
  this._maxListeners = this._maxListeners || undefined;
}
module.exports = EventEmitter;

// Backwards-compat with node 0.10.x
EventEmitter.EventEmitter = EventEmitter;

EventEmitter.prototype._events = undefined;
EventEmitter.prototype._maxListeners = undefined;

// By default EventEmitters will print a warning if more than 10 listeners are
// added to it. This is a useful default which helps finding memory leaks.
EventEmitter.defaultMaxListeners = 10;

// Obviously not all Emitters should be limited to 10. This function allows
// that to be increased. Set to zero for unlimited.
EventEmitter.prototype.setMaxListeners = function(n) {
  if (!isNumber(n) || n < 0 || isNaN(n))
    throw TypeError('n must be a positive number');
  this._maxListeners = n;
  return this;
};

EventEmitter.prototype.emit = function(type) {
  var er, handler, len, args, i, listeners;

  if (!this._events)
    this._events = {};

  // If there is no 'error' event listener then throw.
  if (type === 'error') {
    if (!this._events.error ||
        (isObject(this._events.error) && !this._events.error.length)) {
      er = arguments[1];
      if (er instanceof Error) {
        throw er; // Unhandled 'error' event
      }
      throw TypeError('Uncaught, unspecified "error" event.');
    }
  }

  handler = this._events[type];

  if (isUndefined(handler))
    return false;

  if (isFunction(handler)) {
    switch (arguments.length) {
      // fast cases
      case 1:
        handler.call(this);
        break;
      case 2:
        handler.call(this, arguments[1]);
        break;
      case 3:
        handler.call(this, arguments[1], arguments[2]);
        break;
      // slower
      default:
        len = arguments.length;
        args = new Array(len - 1);
        for (i = 1; i < len; i++)
          args[i - 1] = arguments[i];
        handler.apply(this, args);
    }
  } else if (isObject(handler)) {
    len = arguments.length;
    args = new Array(len - 1);
    for (i = 1; i < len; i++)
      args[i - 1] = arguments[i];

    listeners = handler.slice();
    len = listeners.length;
    for (i = 0; i < len; i++)
      listeners[i].apply(this, args);
  }

  return true;
};

EventEmitter.prototype.addListener = function(type, listener) {
  var m;

  if (!isFunction(listener))
    throw TypeError('listener must be a function');

  if (!this._events)
    this._events = {};

  // To avoid recursion in the case that type === "newListener"! Before
  // adding it to the listeners, first emit "newListener".
  if (this._events.newListener)
    this.emit('newListener', type,
              isFunction(listener.listener) ?
              listener.listener : listener);

  if (!this._events[type])
    // Optimize the case of one listener. Don't need the extra array object.
    this._events[type] = listener;
  else if (isObject(this._events[type]))
    // If we've already got an array, just append.
    this._events[type].push(listener);
  else
    // Adding the second element, need to change to array.
    this._events[type] = [this._events[type], listener];

  // Check for listener leak
  if (isObject(this._events[type]) && !this._events[type].warned) {
    var m;
    if (!isUndefined(this._maxListeners)) {
      m = this._maxListeners;
    } else {
      m = EventEmitter.defaultMaxListeners;
    }

    if (m && m > 0 && this._events[type].length > m) {
      this._events[type].warned = true;
      console.error('(node) warning: possible EventEmitter memory ' +
                    'leak detected. %d listeners added. ' +
                    'Use emitter.setMaxListeners() to increase limit.',
                    this._events[type].length);
      if (typeof console.trace === 'function') {
        // not supported in IE 10
        console.trace();
      }
    }
  }

  return this;
};

EventEmitter.prototype.on = EventEmitter.prototype.addListener;

EventEmitter.prototype.once = function(type, listener) {
  if (!isFunction(listener))
    throw TypeError('listener must be a function');

  var fired = false;

  function g() {
    this.removeListener(type, g);

    if (!fired) {
      fired = true;
      listener.apply(this, arguments);
    }
  }

  g.listener = listener;
  this.on(type, g);

  return this;
};

// emits a 'removeListener' event iff the listener was removed
EventEmitter.prototype.removeListener = function(type, listener) {
  var list, position, length, i;

  if (!isFunction(listener))
    throw TypeError('listener must be a function');

  if (!this._events || !this._events[type])
    return this;

  list = this._events[type];
  length = list.length;
  position = -1;

  if (list === listener ||
      (isFunction(list.listener) && list.listener === listener)) {
    delete this._events[type];
    if (this._events.removeListener)
      this.emit('removeListener', type, listener);

  } else if (isObject(list)) {
    for (i = length; i-- > 0;) {
      if (list[i] === listener ||
          (list[i].listener && list[i].listener === listener)) {
        position = i;
        break;
      }
    }

    if (position < 0)
      return this;

    if (list.length === 1) {
      list.length = 0;
      delete this._events[type];
    } else {
      list.splice(position, 1);
    }

    if (this._events.removeListener)
      this.emit('removeListener', type, listener);
  }

  return this;
};

EventEmitter.prototype.removeAllListeners = function(type) {
  var key, listeners;

  if (!this._events)
    return this;

  // not listening for removeListener, no need to emit
  if (!this._events.removeListener) {
    if (arguments.length === 0)
      this._events = {};
    else if (this._events[type])
      delete this._events[type];
    return this;
  }

  // emit removeListener for all listeners on all events
  if (arguments.length === 0) {
    for (key in this._events) {
      if (key === 'removeListener') continue;
      this.removeAllListeners(key);
    }
    this.removeAllListeners('removeListener');
    this._events = {};
    return this;
  }

  listeners = this._events[type];

  if (isFunction(listeners)) {
    this.removeListener(type, listeners);
  } else {
    // LIFO order
    while (listeners.length)
      this.removeListener(type, listeners[listeners.length - 1]);
  }
  delete this._events[type];

  return this;
};

EventEmitter.prototype.listeners = function(type) {
  var ret;
  if (!this._events || !this._events[type])
    ret = [];
  else if (isFunction(this._events[type]))
    ret = [this._events[type]];
  else
    ret = this._events[type].slice();
  return ret;
};

EventEmitter.listenerCount = function(emitter, type) {
  var ret;
  if (!emitter._events || !emitter._events[type])
    ret = 0;
  else if (isFunction(emitter._events[type]))
    ret = 1;
  else
    ret = emitter._events[type].length;
  return ret;
};

function isFunction(arg) {
  return typeof arg === 'function';
}

function isNumber(arg) {
  return typeof arg === 'number';
}

function isObject(arg) {
  return typeof arg === 'object' && arg !== null;
}

function isUndefined(arg) {
  return arg === void 0;
}

},{}],197:[function(require,module,exports){
if (typeof Object.create === 'function') {
  // implementation from standard node.js 'util' module
  module.exports = function inherits(ctor, superCtor) {
    ctor.super_ = superCtor
    ctor.prototype = Object.create(superCtor.prototype, {
      constructor: {
        value: ctor,
        enumerable: false,
        writable: true,
        configurable: true
      }
    });
  };
} else {
  // old school shim for old browsers
  module.exports = function inherits(ctor, superCtor) {
    ctor.super_ = superCtor
    var TempCtor = function () {}
    TempCtor.prototype = superCtor.prototype
    ctor.prototype = new TempCtor()
    ctor.prototype.constructor = ctor
  }
}

},{}],198:[function(require,module,exports){
module.exports = Array.isArray || function (arr) {
  return Object.prototype.toString.call(arr) == '[object Array]';
};

},{}],199:[function(require,module,exports){
(function (process){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// resolves . and .. elements in a path array with directory names there
// must be no slashes, empty elements, or device names (c:\) in the array
// (so also no leading and trailing slashes - it does not distinguish
// relative and absolute paths)
function normalizeArray(parts, allowAboveRoot) {
  // if the path tries to go above the root, `up` ends up > 0
  var up = 0;
  for (var i = parts.length - 1; i >= 0; i--) {
    var last = parts[i];
    if (last === '.') {
      parts.splice(i, 1);
    } else if (last === '..') {
      parts.splice(i, 1);
      up++;
    } else if (up) {
      parts.splice(i, 1);
      up--;
    }
  }

  // if the path is allowed to go above the root, restore leading ..s
  if (allowAboveRoot) {
    for (; up--; up) {
      parts.unshift('..');
    }
  }

  return parts;
}

// Split a filename into [root, dir, basename, ext], unix version
// 'root' is just a slash, or nothing.
var splitPathRe =
    /^(\/?|)([\s\S]*?)((?:\.{1,2}|[^\/]+?|)(\.[^.\/]*|))(?:[\/]*)$/;
var splitPath = function(filename) {
  return splitPathRe.exec(filename).slice(1);
};

// path.resolve([from ...], to)
// posix version
exports.resolve = function() {
  var resolvedPath = '',
      resolvedAbsolute = false;

  for (var i = arguments.length - 1; i >= -1 && !resolvedAbsolute; i--) {
    var path = (i >= 0) ? arguments[i] : process.cwd();

    // Skip empty and invalid entries
    if (typeof path !== 'string') {
      throw new TypeError('Arguments to path.resolve must be strings');
    } else if (!path) {
      continue;
    }

    resolvedPath = path + '/' + resolvedPath;
    resolvedAbsolute = path.charAt(0) === '/';
  }

  // At this point the path should be resolved to a full absolute path, but
  // handle relative paths to be safe (might happen when process.cwd() fails)

  // Normalize the path
  resolvedPath = normalizeArray(filter(resolvedPath.split('/'), function(p) {
    return !!p;
  }), !resolvedAbsolute).join('/');

  return ((resolvedAbsolute ? '/' : '') + resolvedPath) || '.';
};

// path.normalize(path)
// posix version
exports.normalize = function(path) {
  var isAbsolute = exports.isAbsolute(path),
      trailingSlash = substr(path, -1) === '/';

  // Normalize the path
  path = normalizeArray(filter(path.split('/'), function(p) {
    return !!p;
  }), !isAbsolute).join('/');

  if (!path && !isAbsolute) {
    path = '.';
  }
  if (path && trailingSlash) {
    path += '/';
  }

  return (isAbsolute ? '/' : '') + path;
};

// posix version
exports.isAbsolute = function(path) {
  return path.charAt(0) === '/';
};

// posix version
exports.join = function() {
  var paths = Array.prototype.slice.call(arguments, 0);
  return exports.normalize(filter(paths, function(p, index) {
    if (typeof p !== 'string') {
      throw new TypeError('Arguments to path.join must be strings');
    }
    return p;
  }).join('/'));
};


// path.relative(from, to)
// posix version
exports.relative = function(from, to) {
  from = exports.resolve(from).substr(1);
  to = exports.resolve(to).substr(1);

  function trim(arr) {
    var start = 0;
    for (; start < arr.length; start++) {
      if (arr[start] !== '') break;
    }

    var end = arr.length - 1;
    for (; end >= 0; end--) {
      if (arr[end] !== '') break;
    }

    if (start > end) return [];
    return arr.slice(start, end - start + 1);
  }

  var fromParts = trim(from.split('/'));
  var toParts = trim(to.split('/'));

  var length = Math.min(fromParts.length, toParts.length);
  var samePartsLength = length;
  for (var i = 0; i < length; i++) {
    if (fromParts[i] !== toParts[i]) {
      samePartsLength = i;
      break;
    }
  }

  var outputParts = [];
  for (var i = samePartsLength; i < fromParts.length; i++) {
    outputParts.push('..');
  }

  outputParts = outputParts.concat(toParts.slice(samePartsLength));

  return outputParts.join('/');
};

exports.sep = '/';
exports.delimiter = ':';

exports.dirname = function(path) {
  var result = splitPath(path),
      root = result[0],
      dir = result[1];

  if (!root && !dir) {
    // No dirname whatsoever
    return '.';
  }

  if (dir) {
    // It has a dirname, strip trailing slash
    dir = dir.substr(0, dir.length - 1);
  }

  return root + dir;
};


exports.basename = function(path, ext) {
  var f = splitPath(path)[2];
  // TODO: make this comparison case-insensitive on windows?
  if (ext && f.substr(-1 * ext.length) === ext) {
    f = f.substr(0, f.length - ext.length);
  }
  return f;
};


exports.extname = function(path) {
  return splitPath(path)[3];
};

function filter (xs, f) {
    if (xs.filter) return xs.filter(f);
    var res = [];
    for (var i = 0; i < xs.length; i++) {
        if (f(xs[i], i, xs)) res.push(xs[i]);
    }
    return res;
}

// String.prototype.substr - negative index don't work in IE8
var substr = 'ab'.substr(-1) === 'b'
    ? function (str, start, len) { return str.substr(start, len) }
    : function (str, start, len) {
        if (start < 0) start = str.length + start;
        return str.substr(start, len);
    }
;

}).call(this,require('_process'))
},{"_process":200}],200:[function(require,module,exports){
// shim for using process in browser

var process = module.exports = {};
var queue = [];
var draining = false;

function drainQueue() {
    if (draining) {
        return;
    }
    draining = true;
    var currentQueue;
    var len = queue.length;
    while(len) {
        currentQueue = queue;
        queue = [];
        var i = -1;
        while (++i < len) {
            currentQueue[i]();
        }
        len = queue.length;
    }
    draining = false;
}
process.nextTick = function (fun) {
    queue.push(fun);
    if (!draining) {
        setTimeout(drainQueue, 0);
    }
};

process.title = 'browser';
process.browser = true;
process.env = {};
process.argv = [];
process.version = ''; // empty string to avoid regexp issues
process.versions = {};

function noop() {}

process.on = noop;
process.addListener = noop;
process.once = noop;
process.off = noop;
process.removeListener = noop;
process.removeAllListeners = noop;
process.emit = noop;

process.binding = function (name) {
    throw new Error('process.binding is not supported');
};

// TODO(shtylman)
process.cwd = function () { return '/' };
process.chdir = function (dir) {
    throw new Error('process.chdir is not supported');
};
process.umask = function() { return 0; };

},{}],201:[function(require,module,exports){
module.exports = require("./lib/_stream_duplex.js")

},{"./lib/_stream_duplex.js":202}],202:[function(require,module,exports){
(function (process){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// a duplex stream is just a stream that is both readable and writable.
// Since JS doesn't have multiple prototypal inheritance, this class
// prototypally inherits from Readable, and then parasitically from
// Writable.

module.exports = Duplex;

/*<replacement>*/
var objectKeys = Object.keys || function (obj) {
  var keys = [];
  for (var key in obj) keys.push(key);
  return keys;
}
/*</replacement>*/


/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

var Readable = require('./_stream_readable');
var Writable = require('./_stream_writable');

util.inherits(Duplex, Readable);

forEach(objectKeys(Writable.prototype), function(method) {
  if (!Duplex.prototype[method])
    Duplex.prototype[method] = Writable.prototype[method];
});

function Duplex(options) {
  if (!(this instanceof Duplex))
    return new Duplex(options);

  Readable.call(this, options);
  Writable.call(this, options);

  if (options && options.readable === false)
    this.readable = false;

  if (options && options.writable === false)
    this.writable = false;

  this.allowHalfOpen = true;
  if (options && options.allowHalfOpen === false)
    this.allowHalfOpen = false;

  this.once('end', onend);
}

// the no-half-open enforcer
function onend() {
  // if we allow half-open state, or if the writable side ended,
  // then we're ok.
  if (this.allowHalfOpen || this._writableState.ended)
    return;

  // no more data can be written.
  // But allow more writes to happen in this tick.
  process.nextTick(this.end.bind(this));
}

function forEach (xs, f) {
  for (var i = 0, l = xs.length; i < l; i++) {
    f(xs[i], i);
  }
}

}).call(this,require('_process'))
},{"./_stream_readable":204,"./_stream_writable":206,"_process":200,"core-util-is":207,"inherits":197}],203:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// a passthrough stream.
// basically just the most minimal sort of Transform stream.
// Every written chunk gets output as-is.

module.exports = PassThrough;

var Transform = require('./_stream_transform');

/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

util.inherits(PassThrough, Transform);

function PassThrough(options) {
  if (!(this instanceof PassThrough))
    return new PassThrough(options);

  Transform.call(this, options);
}

PassThrough.prototype._transform = function(chunk, encoding, cb) {
  cb(null, chunk);
};

},{"./_stream_transform":205,"core-util-is":207,"inherits":197}],204:[function(require,module,exports){
(function (process){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

module.exports = Readable;

/*<replacement>*/
var isArray = require('isarray');
/*</replacement>*/


/*<replacement>*/
var Buffer = require('buffer').Buffer;
/*</replacement>*/

Readable.ReadableState = ReadableState;

var EE = require('events').EventEmitter;

/*<replacement>*/
if (!EE.listenerCount) EE.listenerCount = function(emitter, type) {
  return emitter.listeners(type).length;
};
/*</replacement>*/

var Stream = require('stream');

/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

var StringDecoder;


/*<replacement>*/
var debug = require('util');
if (debug && debug.debuglog) {
  debug = debug.debuglog('stream');
} else {
  debug = function () {};
}
/*</replacement>*/


util.inherits(Readable, Stream);

function ReadableState(options, stream) {
  var Duplex = require('./_stream_duplex');

  options = options || {};

  // the point at which it stops calling _read() to fill the buffer
  // Note: 0 is a valid value, means "don't call _read preemptively ever"
  var hwm = options.highWaterMark;
  var defaultHwm = options.objectMode ? 16 : 16 * 1024;
  this.highWaterMark = (hwm || hwm === 0) ? hwm : defaultHwm;

  // cast to ints.
  this.highWaterMark = ~~this.highWaterMark;

  this.buffer = [];
  this.length = 0;
  this.pipes = null;
  this.pipesCount = 0;
  this.flowing = null;
  this.ended = false;
  this.endEmitted = false;
  this.reading = false;

  // a flag to be able to tell if the onwrite cb is called immediately,
  // or on a later tick.  We set this to true at first, because any
  // actions that shouldn't happen until "later" should generally also
  // not happen before the first write call.
  this.sync = true;

  // whenever we return null, then we set a flag to say
  // that we're awaiting a 'readable' event emission.
  this.needReadable = false;
  this.emittedReadable = false;
  this.readableListening = false;


  // object stream flag. Used to make read(n) ignore n and to
  // make all the buffer merging and length checks go away
  this.objectMode = !!options.objectMode;

  if (stream instanceof Duplex)
    this.objectMode = this.objectMode || !!options.readableObjectMode;

  // Crypto is kind of old and crusty.  Historically, its default string
  // encoding is 'binary' so we have to make this configurable.
  // Everything else in the universe uses 'utf8', though.
  this.defaultEncoding = options.defaultEncoding || 'utf8';

  // when piping, we only care about 'readable' events that happen
  // after read()ing all the bytes and not getting any pushback.
  this.ranOut = false;

  // the number of writers that are awaiting a drain event in .pipe()s
  this.awaitDrain = 0;

  // if true, a maybeReadMore has been scheduled
  this.readingMore = false;

  this.decoder = null;
  this.encoding = null;
  if (options.encoding) {
    if (!StringDecoder)
      StringDecoder = require('string_decoder/').StringDecoder;
    this.decoder = new StringDecoder(options.encoding);
    this.encoding = options.encoding;
  }
}

function Readable(options) {
  var Duplex = require('./_stream_duplex');

  if (!(this instanceof Readable))
    return new Readable(options);

  this._readableState = new ReadableState(options, this);

  // legacy
  this.readable = true;

  Stream.call(this);
}

// Manually shove something into the read() buffer.
// This returns true if the highWaterMark has not been hit yet,
// similar to how Writable.write() returns true if you should
// write() some more.
Readable.prototype.push = function(chunk, encoding) {
  var state = this._readableState;

  if (util.isString(chunk) && !state.objectMode) {
    encoding = encoding || state.defaultEncoding;
    if (encoding !== state.encoding) {
      chunk = new Buffer(chunk, encoding);
      encoding = '';
    }
  }

  return readableAddChunk(this, state, chunk, encoding, false);
};

// Unshift should *always* be something directly out of read()
Readable.prototype.unshift = function(chunk) {
  var state = this._readableState;
  return readableAddChunk(this, state, chunk, '', true);
};

function readableAddChunk(stream, state, chunk, encoding, addToFront) {
  var er = chunkInvalid(state, chunk);
  if (er) {
    stream.emit('error', er);
  } else if (util.isNullOrUndefined(chunk)) {
    state.reading = false;
    if (!state.ended)
      onEofChunk(stream, state);
  } else if (state.objectMode || chunk && chunk.length > 0) {
    if (state.ended && !addToFront) {
      var e = new Error('stream.push() after EOF');
      stream.emit('error', e);
    } else if (state.endEmitted && addToFront) {
      var e = new Error('stream.unshift() after end event');
      stream.emit('error', e);
    } else {
      if (state.decoder && !addToFront && !encoding)
        chunk = state.decoder.write(chunk);

      if (!addToFront)
        state.reading = false;

      // if we want the data now, just emit it.
      if (state.flowing && state.length === 0 && !state.sync) {
        stream.emit('data', chunk);
        stream.read(0);
      } else {
        // update the buffer info.
        state.length += state.objectMode ? 1 : chunk.length;
        if (addToFront)
          state.buffer.unshift(chunk);
        else
          state.buffer.push(chunk);

        if (state.needReadable)
          emitReadable(stream);
      }

      maybeReadMore(stream, state);
    }
  } else if (!addToFront) {
    state.reading = false;
  }

  return needMoreData(state);
}



// if it's past the high water mark, we can push in some more.
// Also, if we have no data yet, we can stand some
// more bytes.  This is to work around cases where hwm=0,
// such as the repl.  Also, if the push() triggered a
// readable event, and the user called read(largeNumber) such that
// needReadable was set, then we ought to push more, so that another
// 'readable' event will be triggered.
function needMoreData(state) {
  return !state.ended &&
         (state.needReadable ||
          state.length < state.highWaterMark ||
          state.length === 0);
}

// backwards compatibility.
Readable.prototype.setEncoding = function(enc) {
  if (!StringDecoder)
    StringDecoder = require('string_decoder/').StringDecoder;
  this._readableState.decoder = new StringDecoder(enc);
  this._readableState.encoding = enc;
  return this;
};

// Don't raise the hwm > 128MB
var MAX_HWM = 0x800000;
function roundUpToNextPowerOf2(n) {
  if (n >= MAX_HWM) {
    n = MAX_HWM;
  } else {
    // Get the next highest power of 2
    n--;
    for (var p = 1; p < 32; p <<= 1) n |= n >> p;
    n++;
  }
  return n;
}

function howMuchToRead(n, state) {
  if (state.length === 0 && state.ended)
    return 0;

  if (state.objectMode)
    return n === 0 ? 0 : 1;

  if (isNaN(n) || util.isNull(n)) {
    // only flow one buffer at a time
    if (state.flowing && state.buffer.length)
      return state.buffer[0].length;
    else
      return state.length;
  }

  if (n <= 0)
    return 0;

  // If we're asking for more than the target buffer level,
  // then raise the water mark.  Bump up to the next highest
  // power of 2, to prevent increasing it excessively in tiny
  // amounts.
  if (n > state.highWaterMark)
    state.highWaterMark = roundUpToNextPowerOf2(n);

  // don't have that much.  return null, unless we've ended.
  if (n > state.length) {
    if (!state.ended) {
      state.needReadable = true;
      return 0;
    } else
      return state.length;
  }

  return n;
}

// you can override either this method, or the async _read(n) below.
Readable.prototype.read = function(n) {
  debug('read', n);
  var state = this._readableState;
  var nOrig = n;

  if (!util.isNumber(n) || n > 0)
    state.emittedReadable = false;

  // if we're doing read(0) to trigger a readable event, but we
  // already have a bunch of data in the buffer, then just trigger
  // the 'readable' event and move on.
  if (n === 0 &&
      state.needReadable &&
      (state.length >= state.highWaterMark || state.ended)) {
    debug('read: emitReadable', state.length, state.ended);
    if (state.length === 0 && state.ended)
      endReadable(this);
    else
      emitReadable(this);
    return null;
  }

  n = howMuchToRead(n, state);

  // if we've ended, and we're now clear, then finish it up.
  if (n === 0 && state.ended) {
    if (state.length === 0)
      endReadable(this);
    return null;
  }

  // All the actual chunk generation logic needs to be
  // *below* the call to _read.  The reason is that in certain
  // synthetic stream cases, such as passthrough streams, _read
  // may be a completely synchronous operation which may change
  // the state of the read buffer, providing enough data when
  // before there was *not* enough.
  //
  // So, the steps are:
  // 1. Figure out what the state of things will be after we do
  // a read from the buffer.
  //
  // 2. If that resulting state will trigger a _read, then call _read.
  // Note that this may be asynchronous, or synchronous.  Yes, it is
  // deeply ugly to write APIs this way, but that still doesn't mean
  // that the Readable class should behave improperly, as streams are
  // designed to be sync/async agnostic.
  // Take note if the _read call is sync or async (ie, if the read call
  // has returned yet), so that we know whether or not it's safe to emit
  // 'readable' etc.
  //
  // 3. Actually pull the requested chunks out of the buffer and return.

  // if we need a readable event, then we need to do some reading.
  var doRead = state.needReadable;
  debug('need readable', doRead);

  // if we currently have less than the highWaterMark, then also read some
  if (state.length === 0 || state.length - n < state.highWaterMark) {
    doRead = true;
    debug('length less than watermark', doRead);
  }

  // however, if we've ended, then there's no point, and if we're already
  // reading, then it's unnecessary.
  if (state.ended || state.reading) {
    doRead = false;
    debug('reading or ended', doRead);
  }

  if (doRead) {
    debug('do read');
    state.reading = true;
    state.sync = true;
    // if the length is currently zero, then we *need* a readable event.
    if (state.length === 0)
      state.needReadable = true;
    // call internal read method
    this._read(state.highWaterMark);
    state.sync = false;
  }

  // If _read pushed data synchronously, then `reading` will be false,
  // and we need to re-evaluate how much data we can return to the user.
  if (doRead && !state.reading)
    n = howMuchToRead(nOrig, state);

  var ret;
  if (n > 0)
    ret = fromList(n, state);
  else
    ret = null;

  if (util.isNull(ret)) {
    state.needReadable = true;
    n = 0;
  }

  state.length -= n;

  // If we have nothing in the buffer, then we want to know
  // as soon as we *do* get something into the buffer.
  if (state.length === 0 && !state.ended)
    state.needReadable = true;

  // If we tried to read() past the EOF, then emit end on the next tick.
  if (nOrig !== n && state.ended && state.length === 0)
    endReadable(this);

  if (!util.isNull(ret))
    this.emit('data', ret);

  return ret;
};

function chunkInvalid(state, chunk) {
  var er = null;
  if (!util.isBuffer(chunk) &&
      !util.isString(chunk) &&
      !util.isNullOrUndefined(chunk) &&
      !state.objectMode) {
    er = new TypeError('Invalid non-string/buffer chunk');
  }
  return er;
}


function onEofChunk(stream, state) {
  if (state.decoder && !state.ended) {
    var chunk = state.decoder.end();
    if (chunk && chunk.length) {
      state.buffer.push(chunk);
      state.length += state.objectMode ? 1 : chunk.length;
    }
  }
  state.ended = true;

  // emit 'readable' now to make sure it gets picked up.
  emitReadable(stream);
}

// Don't emit readable right away in sync mode, because this can trigger
// another read() call => stack overflow.  This way, it might trigger
// a nextTick recursion warning, but that's not so bad.
function emitReadable(stream) {
  var state = stream._readableState;
  state.needReadable = false;
  if (!state.emittedReadable) {
    debug('emitReadable', state.flowing);
    state.emittedReadable = true;
    if (state.sync)
      process.nextTick(function() {
        emitReadable_(stream);
      });
    else
      emitReadable_(stream);
  }
}

function emitReadable_(stream) {
  debug('emit readable');
  stream.emit('readable');
  flow(stream);
}


// at this point, the user has presumably seen the 'readable' event,
// and called read() to consume some data.  that may have triggered
// in turn another _read(n) call, in which case reading = true if
// it's in progress.
// However, if we're not ended, or reading, and the length < hwm,
// then go ahead and try to read some more preemptively.
function maybeReadMore(stream, state) {
  if (!state.readingMore) {
    state.readingMore = true;
    process.nextTick(function() {
      maybeReadMore_(stream, state);
    });
  }
}

function maybeReadMore_(stream, state) {
  var len = state.length;
  while (!state.reading && !state.flowing && !state.ended &&
         state.length < state.highWaterMark) {
    debug('maybeReadMore read 0');
    stream.read(0);
    if (len === state.length)
      // didn't get any data, stop spinning.
      break;
    else
      len = state.length;
  }
  state.readingMore = false;
}

// abstract method.  to be overridden in specific implementation classes.
// call cb(er, data) where data is <= n in length.
// for virtual (non-string, non-buffer) streams, "length" is somewhat
// arbitrary, and perhaps not very meaningful.
Readable.prototype._read = function(n) {
  this.emit('error', new Error('not implemented'));
};

Readable.prototype.pipe = function(dest, pipeOpts) {
  var src = this;
  var state = this._readableState;

  switch (state.pipesCount) {
    case 0:
      state.pipes = dest;
      break;
    case 1:
      state.pipes = [state.pipes, dest];
      break;
    default:
      state.pipes.push(dest);
      break;
  }
  state.pipesCount += 1;
  debug('pipe count=%d opts=%j', state.pipesCount, pipeOpts);

  var doEnd = (!pipeOpts || pipeOpts.end !== false) &&
              dest !== process.stdout &&
              dest !== process.stderr;

  var endFn = doEnd ? onend : cleanup;
  if (state.endEmitted)
    process.nextTick(endFn);
  else
    src.once('end', endFn);

  dest.on('unpipe', onunpipe);
  function onunpipe(readable) {
    debug('onunpipe');
    if (readable === src) {
      cleanup();
    }
  }

  function onend() {
    debug('onend');
    dest.end();
  }

  // when the dest drains, it reduces the awaitDrain counter
  // on the source.  This would be more elegant with a .once()
  // handler in flow(), but adding and removing repeatedly is
  // too slow.
  var ondrain = pipeOnDrain(src);
  dest.on('drain', ondrain);

  function cleanup() {
    debug('cleanup');
    // cleanup event handlers once the pipe is broken
    dest.removeListener('close', onclose);
    dest.removeListener('finish', onfinish);
    dest.removeListener('drain', ondrain);
    dest.removeListener('error', onerror);
    dest.removeListener('unpipe', onunpipe);
    src.removeListener('end', onend);
    src.removeListener('end', cleanup);
    src.removeListener('data', ondata);

    // if the reader is waiting for a drain event from this
    // specific writer, then it would cause it to never start
    // flowing again.
    // So, if this is awaiting a drain, then we just call it now.
    // If we don't know, then assume that we are waiting for one.
    if (state.awaitDrain &&
        (!dest._writableState || dest._writableState.needDrain))
      ondrain();
  }

  src.on('data', ondata);
  function ondata(chunk) {
    debug('ondata');
    var ret = dest.write(chunk);
    if (false === ret) {
      debug('false write response, pause',
            src._readableState.awaitDrain);
      src._readableState.awaitDrain++;
      src.pause();
    }
  }

  // if the dest has an error, then stop piping into it.
  // however, don't suppress the throwing behavior for this.
  function onerror(er) {
    debug('onerror', er);
    unpipe();
    dest.removeListener('error', onerror);
    if (EE.listenerCount(dest, 'error') === 0)
      dest.emit('error', er);
  }
  // This is a brutally ugly hack to make sure that our error handler
  // is attached before any userland ones.  NEVER DO THIS.
  if (!dest._events || !dest._events.error)
    dest.on('error', onerror);
  else if (isArray(dest._events.error))
    dest._events.error.unshift(onerror);
  else
    dest._events.error = [onerror, dest._events.error];



  // Both close and finish should trigger unpipe, but only once.
  function onclose() {
    dest.removeListener('finish', onfinish);
    unpipe();
  }
  dest.once('close', onclose);
  function onfinish() {
    debug('onfinish');
    dest.removeListener('close', onclose);
    unpipe();
  }
  dest.once('finish', onfinish);

  function unpipe() {
    debug('unpipe');
    src.unpipe(dest);
  }

  // tell the dest that it's being piped to
  dest.emit('pipe', src);

  // start the flow if it hasn't been started already.
  if (!state.flowing) {
    debug('pipe resume');
    src.resume();
  }

  return dest;
};

function pipeOnDrain(src) {
  return function() {
    var state = src._readableState;
    debug('pipeOnDrain', state.awaitDrain);
    if (state.awaitDrain)
      state.awaitDrain--;
    if (state.awaitDrain === 0 && EE.listenerCount(src, 'data')) {
      state.flowing = true;
      flow(src);
    }
  };
}


Readable.prototype.unpipe = function(dest) {
  var state = this._readableState;

  // if we're not piping anywhere, then do nothing.
  if (state.pipesCount === 0)
    return this;

  // just one destination.  most common case.
  if (state.pipesCount === 1) {
    // passed in one, but it's not the right one.
    if (dest && dest !== state.pipes)
      return this;

    if (!dest)
      dest = state.pipes;

    // got a match.
    state.pipes = null;
    state.pipesCount = 0;
    state.flowing = false;
    if (dest)
      dest.emit('unpipe', this);
    return this;
  }

  // slow case. multiple pipe destinations.

  if (!dest) {
    // remove all.
    var dests = state.pipes;
    var len = state.pipesCount;
    state.pipes = null;
    state.pipesCount = 0;
    state.flowing = false;

    for (var i = 0; i < len; i++)
      dests[i].emit('unpipe', this);
    return this;
  }

  // try to find the right one.
  var i = indexOf(state.pipes, dest);
  if (i === -1)
    return this;

  state.pipes.splice(i, 1);
  state.pipesCount -= 1;
  if (state.pipesCount === 1)
    state.pipes = state.pipes[0];

  dest.emit('unpipe', this);

  return this;
};

// set up data events if they are asked for
// Ensure readable listeners eventually get something
Readable.prototype.on = function(ev, fn) {
  var res = Stream.prototype.on.call(this, ev, fn);

  // If listening to data, and it has not explicitly been paused,
  // then call resume to start the flow of data on the next tick.
  if (ev === 'data' && false !== this._readableState.flowing) {
    this.resume();
  }

  if (ev === 'readable' && this.readable) {
    var state = this._readableState;
    if (!state.readableListening) {
      state.readableListening = true;
      state.emittedReadable = false;
      state.needReadable = true;
      if (!state.reading) {
        var self = this;
        process.nextTick(function() {
          debug('readable nexttick read 0');
          self.read(0);
        });
      } else if (state.length) {
        emitReadable(this, state);
      }
    }
  }

  return res;
};
Readable.prototype.addListener = Readable.prototype.on;

// pause() and resume() are remnants of the legacy readable stream API
// If the user uses them, then switch into old mode.
Readable.prototype.resume = function() {
  var state = this._readableState;
  if (!state.flowing) {
    debug('resume');
    state.flowing = true;
    if (!state.reading) {
      debug('resume read 0');
      this.read(0);
    }
    resume(this, state);
  }
  return this;
};

function resume(stream, state) {
  if (!state.resumeScheduled) {
    state.resumeScheduled = true;
    process.nextTick(function() {
      resume_(stream, state);
    });
  }
}

function resume_(stream, state) {
  state.resumeScheduled = false;
  stream.emit('resume');
  flow(stream);
  if (state.flowing && !state.reading)
    stream.read(0);
}

Readable.prototype.pause = function() {
  debug('call pause flowing=%j', this._readableState.flowing);
  if (false !== this._readableState.flowing) {
    debug('pause');
    this._readableState.flowing = false;
    this.emit('pause');
  }
  return this;
};

function flow(stream) {
  var state = stream._readableState;
  debug('flow', state.flowing);
  if (state.flowing) {
    do {
      var chunk = stream.read();
    } while (null !== chunk && state.flowing);
  }
}

// wrap an old-style stream as the async data source.
// This is *not* part of the readable stream interface.
// It is an ugly unfortunate mess of history.
Readable.prototype.wrap = function(stream) {
  var state = this._readableState;
  var paused = false;

  var self = this;
  stream.on('end', function() {
    debug('wrapped end');
    if (state.decoder && !state.ended) {
      var chunk = state.decoder.end();
      if (chunk && chunk.length)
        self.push(chunk);
    }

    self.push(null);
  });

  stream.on('data', function(chunk) {
    debug('wrapped data');
    if (state.decoder)
      chunk = state.decoder.write(chunk);
    if (!chunk || !state.objectMode && !chunk.length)
      return;

    var ret = self.push(chunk);
    if (!ret) {
      paused = true;
      stream.pause();
    }
  });

  // proxy all the other methods.
  // important when wrapping filters and duplexes.
  for (var i in stream) {
    if (util.isFunction(stream[i]) && util.isUndefined(this[i])) {
      this[i] = function(method) { return function() {
        return stream[method].apply(stream, arguments);
      }}(i);
    }
  }

  // proxy certain important events.
  var events = ['error', 'close', 'destroy', 'pause', 'resume'];
  forEach(events, function(ev) {
    stream.on(ev, self.emit.bind(self, ev));
  });

  // when we try to consume some more bytes, simply unpause the
  // underlying stream.
  self._read = function(n) {
    debug('wrapped _read', n);
    if (paused) {
      paused = false;
      stream.resume();
    }
  };

  return self;
};



// exposed for testing purposes only.
Readable._fromList = fromList;

// Pluck off n bytes from an array of buffers.
// Length is the combined lengths of all the buffers in the list.
function fromList(n, state) {
  var list = state.buffer;
  var length = state.length;
  var stringMode = !!state.decoder;
  var objectMode = !!state.objectMode;
  var ret;

  // nothing in the list, definitely empty.
  if (list.length === 0)
    return null;

  if (length === 0)
    ret = null;
  else if (objectMode)
    ret = list.shift();
  else if (!n || n >= length) {
    // read it all, truncate the array.
    if (stringMode)
      ret = list.join('');
    else
      ret = Buffer.concat(list, length);
    list.length = 0;
  } else {
    // read just some of it.
    if (n < list[0].length) {
      // just take a part of the first list item.
      // slice is the same for buffers and strings.
      var buf = list[0];
      ret = buf.slice(0, n);
      list[0] = buf.slice(n);
    } else if (n === list[0].length) {
      // first list is a perfect match
      ret = list.shift();
    } else {
      // complex case.
      // we have enough to cover it, but it spans past the first buffer.
      if (stringMode)
        ret = '';
      else
        ret = new Buffer(n);

      var c = 0;
      for (var i = 0, l = list.length; i < l && c < n; i++) {
        var buf = list[0];
        var cpy = Math.min(n - c, buf.length);

        if (stringMode)
          ret += buf.slice(0, cpy);
        else
          buf.copy(ret, c, 0, cpy);

        if (cpy < buf.length)
          list[0] = buf.slice(cpy);
        else
          list.shift();

        c += cpy;
      }
    }
  }

  return ret;
}

function endReadable(stream) {
  var state = stream._readableState;

  // If we get here before consuming all the bytes, then that is a
  // bug in node.  Should never happen.
  if (state.length > 0)
    throw new Error('endReadable called on non-empty stream');

  if (!state.endEmitted) {
    state.ended = true;
    process.nextTick(function() {
      // Check that we didn't get one last unshift.
      if (!state.endEmitted && state.length === 0) {
        state.endEmitted = true;
        stream.readable = false;
        stream.emit('end');
      }
    });
  }
}

function forEach (xs, f) {
  for (var i = 0, l = xs.length; i < l; i++) {
    f(xs[i], i);
  }
}

function indexOf (xs, x) {
  for (var i = 0, l = xs.length; i < l; i++) {
    if (xs[i] === x) return i;
  }
  return -1;
}

}).call(this,require('_process'))
},{"./_stream_duplex":202,"_process":200,"buffer":192,"core-util-is":207,"events":196,"inherits":197,"isarray":198,"stream":212,"string_decoder/":213,"util":191}],205:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.


// a transform stream is a readable/writable stream where you do
// something with the data.  Sometimes it's called a "filter",
// but that's not a great name for it, since that implies a thing where
// some bits pass through, and others are simply ignored.  (That would
// be a valid example of a transform, of course.)
//
// While the output is causally related to the input, it's not a
// necessarily symmetric or synchronous transformation.  For example,
// a zlib stream might take multiple plain-text writes(), and then
// emit a single compressed chunk some time in the future.
//
// Here's how this works:
//
// The Transform stream has all the aspects of the readable and writable
// stream classes.  When you write(chunk), that calls _write(chunk,cb)
// internally, and returns false if there's a lot of pending writes
// buffered up.  When you call read(), that calls _read(n) until
// there's enough pending readable data buffered up.
//
// In a transform stream, the written data is placed in a buffer.  When
// _read(n) is called, it transforms the queued up data, calling the
// buffered _write cb's as it consumes chunks.  If consuming a single
// written chunk would result in multiple output chunks, then the first
// outputted bit calls the readcb, and subsequent chunks just go into
// the read buffer, and will cause it to emit 'readable' if necessary.
//
// This way, back-pressure is actually determined by the reading side,
// since _read has to be called to start processing a new chunk.  However,
// a pathological inflate type of transform can cause excessive buffering
// here.  For example, imagine a stream where every byte of input is
// interpreted as an integer from 0-255, and then results in that many
// bytes of output.  Writing the 4 bytes {ff,ff,ff,ff} would result in
// 1kb of data being output.  In this case, you could write a very small
// amount of input, and end up with a very large amount of output.  In
// such a pathological inflating mechanism, there'd be no way to tell
// the system to stop doing the transform.  A single 4MB write could
// cause the system to run out of memory.
//
// However, even in such a pathological case, only a single written chunk
// would be consumed, and then the rest would wait (un-transformed) until
// the results of the previous transformed chunk were consumed.

module.exports = Transform;

var Duplex = require('./_stream_duplex');

/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

util.inherits(Transform, Duplex);


function TransformState(options, stream) {
  this.afterTransform = function(er, data) {
    return afterTransform(stream, er, data);
  };

  this.needTransform = false;
  this.transforming = false;
  this.writecb = null;
  this.writechunk = null;
}

function afterTransform(stream, er, data) {
  var ts = stream._transformState;
  ts.transforming = false;

  var cb = ts.writecb;

  if (!cb)
    return stream.emit('error', new Error('no writecb in Transform class'));

  ts.writechunk = null;
  ts.writecb = null;

  if (!util.isNullOrUndefined(data))
    stream.push(data);

  if (cb)
    cb(er);

  var rs = stream._readableState;
  rs.reading = false;
  if (rs.needReadable || rs.length < rs.highWaterMark) {
    stream._read(rs.highWaterMark);
  }
}


function Transform(options) {
  if (!(this instanceof Transform))
    return new Transform(options);

  Duplex.call(this, options);

  this._transformState = new TransformState(options, this);

  // when the writable side finishes, then flush out anything remaining.
  var stream = this;

  // start out asking for a readable event once data is transformed.
  this._readableState.needReadable = true;

  // we have implemented the _read method, and done the other things
  // that Readable wants before the first _read call, so unset the
  // sync guard flag.
  this._readableState.sync = false;

  this.once('prefinish', function() {
    if (util.isFunction(this._flush))
      this._flush(function(er) {
        done(stream, er);
      });
    else
      done(stream);
  });
}

Transform.prototype.push = function(chunk, encoding) {
  this._transformState.needTransform = false;
  return Duplex.prototype.push.call(this, chunk, encoding);
};

// This is the part where you do stuff!
// override this function in implementation classes.
// 'chunk' is an input chunk.
//
// Call `push(newChunk)` to pass along transformed output
// to the readable side.  You may call 'push' zero or more times.
//
// Call `cb(err)` when you are done with this chunk.  If you pass
// an error, then that'll put the hurt on the whole operation.  If you
// never call cb(), then you'll never get another chunk.
Transform.prototype._transform = function(chunk, encoding, cb) {
  throw new Error('not implemented');
};

Transform.prototype._write = function(chunk, encoding, cb) {
  var ts = this._transformState;
  ts.writecb = cb;
  ts.writechunk = chunk;
  ts.writeencoding = encoding;
  if (!ts.transforming) {
    var rs = this._readableState;
    if (ts.needTransform ||
        rs.needReadable ||
        rs.length < rs.highWaterMark)
      this._read(rs.highWaterMark);
  }
};

// Doesn't matter what the args are here.
// _transform does all the work.
// That we got here means that the readable side wants more data.
Transform.prototype._read = function(n) {
  var ts = this._transformState;

  if (!util.isNull(ts.writechunk) && ts.writecb && !ts.transforming) {
    ts.transforming = true;
    this._transform(ts.writechunk, ts.writeencoding, ts.afterTransform);
  } else {
    // mark that we need a transform, so that any data that comes in
    // will get processed, now that we've asked for it.
    ts.needTransform = true;
  }
};


function done(stream, er) {
  if (er)
    return stream.emit('error', er);

  // if there's nothing in the write buffer, then that means
  // that nothing more will ever be provided
  var ws = stream._writableState;
  var ts = stream._transformState;

  if (ws.length)
    throw new Error('calling transform done when ws.length != 0');

  if (ts.transforming)
    throw new Error('calling transform done when still transforming');

  return stream.push(null);
}

},{"./_stream_duplex":202,"core-util-is":207,"inherits":197}],206:[function(require,module,exports){
(function (process){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// A bit simpler than readable streams.
// Implement an async ._write(chunk, cb), and it'll handle all
// the drain event emission and buffering.

module.exports = Writable;

/*<replacement>*/
var Buffer = require('buffer').Buffer;
/*</replacement>*/

Writable.WritableState = WritableState;


/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

var Stream = require('stream');

util.inherits(Writable, Stream);

function WriteReq(chunk, encoding, cb) {
  this.chunk = chunk;
  this.encoding = encoding;
  this.callback = cb;
}

function WritableState(options, stream) {
  var Duplex = require('./_stream_duplex');

  options = options || {};

  // the point at which write() starts returning false
  // Note: 0 is a valid value, means that we always return false if
  // the entire buffer is not flushed immediately on write()
  var hwm = options.highWaterMark;
  var defaultHwm = options.objectMode ? 16 : 16 * 1024;
  this.highWaterMark = (hwm || hwm === 0) ? hwm : defaultHwm;

  // object stream flag to indicate whether or not this stream
  // contains buffers or objects.
  this.objectMode = !!options.objectMode;

  if (stream instanceof Duplex)
    this.objectMode = this.objectMode || !!options.writableObjectMode;

  // cast to ints.
  this.highWaterMark = ~~this.highWaterMark;

  this.needDrain = false;
  // at the start of calling end()
  this.ending = false;
  // when end() has been called, and returned
  this.ended = false;
  // when 'finish' is emitted
  this.finished = false;

  // should we decode strings into buffers before passing to _write?
  // this is here so that some node-core streams can optimize string
  // handling at a lower level.
  var noDecode = options.decodeStrings === false;
  this.decodeStrings = !noDecode;

  // Crypto is kind of old and crusty.  Historically, its default string
  // encoding is 'binary' so we have to make this configurable.
  // Everything else in the universe uses 'utf8', though.
  this.defaultEncoding = options.defaultEncoding || 'utf8';

  // not an actual buffer we keep track of, but a measurement
  // of how much we're waiting to get pushed to some underlying
  // socket or file.
  this.length = 0;

  // a flag to see when we're in the middle of a write.
  this.writing = false;

  // when true all writes will be buffered until .uncork() call
  this.corked = 0;

  // a flag to be able to tell if the onwrite cb is called immediately,
  // or on a later tick.  We set this to true at first, because any
  // actions that shouldn't happen until "later" should generally also
  // not happen before the first write call.
  this.sync = true;

  // a flag to know if we're processing previously buffered items, which
  // may call the _write() callback in the same tick, so that we don't
  // end up in an overlapped onwrite situation.
  this.bufferProcessing = false;

  // the callback that's passed to _write(chunk,cb)
  this.onwrite = function(er) {
    onwrite(stream, er);
  };

  // the callback that the user supplies to write(chunk,encoding,cb)
  this.writecb = null;

  // the amount that is being written when _write is called.
  this.writelen = 0;

  this.buffer = [];

  // number of pending user-supplied write callbacks
  // this must be 0 before 'finish' can be emitted
  this.pendingcb = 0;

  // emit prefinish if the only thing we're waiting for is _write cbs
  // This is relevant for synchronous Transform streams
  this.prefinished = false;

  // True if the error was already emitted and should not be thrown again
  this.errorEmitted = false;
}

function Writable(options) {
  var Duplex = require('./_stream_duplex');

  // Writable ctor is applied to Duplexes, though they're not
  // instanceof Writable, they're instanceof Readable.
  if (!(this instanceof Writable) && !(this instanceof Duplex))
    return new Writable(options);

  this._writableState = new WritableState(options, this);

  // legacy.
  this.writable = true;

  Stream.call(this);
}

// Otherwise people can pipe Writable streams, which is just wrong.
Writable.prototype.pipe = function() {
  this.emit('error', new Error('Cannot pipe. Not readable.'));
};


function writeAfterEnd(stream, state, cb) {
  var er = new Error('write after end');
  // TODO: defer error events consistently everywhere, not just the cb
  stream.emit('error', er);
  process.nextTick(function() {
    cb(er);
  });
}

// If we get something that is not a buffer, string, null, or undefined,
// and we're not in objectMode, then that's an error.
// Otherwise stream chunks are all considered to be of length=1, and the
// watermarks determine how many objects to keep in the buffer, rather than
// how many bytes or characters.
function validChunk(stream, state, chunk, cb) {
  var valid = true;
  if (!util.isBuffer(chunk) &&
      !util.isString(chunk) &&
      !util.isNullOrUndefined(chunk) &&
      !state.objectMode) {
    var er = new TypeError('Invalid non-string/buffer chunk');
    stream.emit('error', er);
    process.nextTick(function() {
      cb(er);
    });
    valid = false;
  }
  return valid;
}

Writable.prototype.write = function(chunk, encoding, cb) {
  var state = this._writableState;
  var ret = false;

  if (util.isFunction(encoding)) {
    cb = encoding;
    encoding = null;
  }

  if (util.isBuffer(chunk))
    encoding = 'buffer';
  else if (!encoding)
    encoding = state.defaultEncoding;

  if (!util.isFunction(cb))
    cb = function() {};

  if (state.ended)
    writeAfterEnd(this, state, cb);
  else if (validChunk(this, state, chunk, cb)) {
    state.pendingcb++;
    ret = writeOrBuffer(this, state, chunk, encoding, cb);
  }

  return ret;
};

Writable.prototype.cork = function() {
  var state = this._writableState;

  state.corked++;
};

Writable.prototype.uncork = function() {
  var state = this._writableState;

  if (state.corked) {
    state.corked--;

    if (!state.writing &&
        !state.corked &&
        !state.finished &&
        !state.bufferProcessing &&
        state.buffer.length)
      clearBuffer(this, state);
  }
};

function decodeChunk(state, chunk, encoding) {
  if (!state.objectMode &&
      state.decodeStrings !== false &&
      util.isString(chunk)) {
    chunk = new Buffer(chunk, encoding);
  }
  return chunk;
}

// if we're already writing something, then just put this
// in the queue, and wait our turn.  Otherwise, call _write
// If we return false, then we need a drain event, so set that flag.
function writeOrBuffer(stream, state, chunk, encoding, cb) {
  chunk = decodeChunk(state, chunk, encoding);
  if (util.isBuffer(chunk))
    encoding = 'buffer';
  var len = state.objectMode ? 1 : chunk.length;

  state.length += len;

  var ret = state.length < state.highWaterMark;
  // we must ensure that previous needDrain will not be reset to false.
  if (!ret)
    state.needDrain = true;

  if (state.writing || state.corked)
    state.buffer.push(new WriteReq(chunk, encoding, cb));
  else
    doWrite(stream, state, false, len, chunk, encoding, cb);

  return ret;
}

function doWrite(stream, state, writev, len, chunk, encoding, cb) {
  state.writelen = len;
  state.writecb = cb;
  state.writing = true;
  state.sync = true;
  if (writev)
    stream._writev(chunk, state.onwrite);
  else
    stream._write(chunk, encoding, state.onwrite);
  state.sync = false;
}

function onwriteError(stream, state, sync, er, cb) {
  if (sync)
    process.nextTick(function() {
      state.pendingcb--;
      cb(er);
    });
  else {
    state.pendingcb--;
    cb(er);
  }

  stream._writableState.errorEmitted = true;
  stream.emit('error', er);
}

function onwriteStateUpdate(state) {
  state.writing = false;
  state.writecb = null;
  state.length -= state.writelen;
  state.writelen = 0;
}

function onwrite(stream, er) {
  var state = stream._writableState;
  var sync = state.sync;
  var cb = state.writecb;

  onwriteStateUpdate(state);

  if (er)
    onwriteError(stream, state, sync, er, cb);
  else {
    // Check if we're actually ready to finish, but don't emit yet
    var finished = needFinish(stream, state);

    if (!finished &&
        !state.corked &&
        !state.bufferProcessing &&
        state.buffer.length) {
      clearBuffer(stream, state);
    }

    if (sync) {
      process.nextTick(function() {
        afterWrite(stream, state, finished, cb);
      });
    } else {
      afterWrite(stream, state, finished, cb);
    }
  }
}

function afterWrite(stream, state, finished, cb) {
  if (!finished)
    onwriteDrain(stream, state);
  state.pendingcb--;
  cb();
  finishMaybe(stream, state);
}

// Must force callback to be called on nextTick, so that we don't
// emit 'drain' before the write() consumer gets the 'false' return
// value, and has a chance to attach a 'drain' listener.
function onwriteDrain(stream, state) {
  if (state.length === 0 && state.needDrain) {
    state.needDrain = false;
    stream.emit('drain');
  }
}


// if there's something in the buffer waiting, then process it
function clearBuffer(stream, state) {
  state.bufferProcessing = true;

  if (stream._writev && state.buffer.length > 1) {
    // Fast case, write everything using _writev()
    var cbs = [];
    for (var c = 0; c < state.buffer.length; c++)
      cbs.push(state.buffer[c].callback);

    // count the one we are adding, as well.
    // TODO(isaacs) clean this up
    state.pendingcb++;
    doWrite(stream, state, true, state.length, state.buffer, '', function(err) {
      for (var i = 0; i < cbs.length; i++) {
        state.pendingcb--;
        cbs[i](err);
      }
    });

    // Clear buffer
    state.buffer = [];
  } else {
    // Slow case, write chunks one-by-one
    for (var c = 0; c < state.buffer.length; c++) {
      var entry = state.buffer[c];
      var chunk = entry.chunk;
      var encoding = entry.encoding;
      var cb = entry.callback;
      var len = state.objectMode ? 1 : chunk.length;

      doWrite(stream, state, false, len, chunk, encoding, cb);

      // if we didn't call the onwrite immediately, then
      // it means that we need to wait until it does.
      // also, that means that the chunk and cb are currently
      // being processed, so move the buffer counter past them.
      if (state.writing) {
        c++;
        break;
      }
    }

    if (c < state.buffer.length)
      state.buffer = state.buffer.slice(c);
    else
      state.buffer.length = 0;
  }

  state.bufferProcessing = false;
}

Writable.prototype._write = function(chunk, encoding, cb) {
  cb(new Error('not implemented'));

};

Writable.prototype._writev = null;

Writable.prototype.end = function(chunk, encoding, cb) {
  var state = this._writableState;

  if (util.isFunction(chunk)) {
    cb = chunk;
    chunk = null;
    encoding = null;
  } else if (util.isFunction(encoding)) {
    cb = encoding;
    encoding = null;
  }

  if (!util.isNullOrUndefined(chunk))
    this.write(chunk, encoding);

  // .end() fully uncorks
  if (state.corked) {
    state.corked = 1;
    this.uncork();
  }

  // ignore unnecessary end() calls.
  if (!state.ending && !state.finished)
    endWritable(this, state, cb);
};


function needFinish(stream, state) {
  return (state.ending &&
          state.length === 0 &&
          !state.finished &&
          !state.writing);
}

function prefinish(stream, state) {
  if (!state.prefinished) {
    state.prefinished = true;
    stream.emit('prefinish');
  }
}

function finishMaybe(stream, state) {
  var need = needFinish(stream, state);
  if (need) {
    if (state.pendingcb === 0) {
      prefinish(stream, state);
      state.finished = true;
      stream.emit('finish');
    } else
      prefinish(stream, state);
  }
  return need;
}

function endWritable(stream, state, cb) {
  state.ending = true;
  finishMaybe(stream, state);
  if (cb) {
    if (state.finished)
      process.nextTick(cb);
    else
      stream.once('finish', cb);
  }
  state.ended = true;
}

}).call(this,require('_process'))
},{"./_stream_duplex":202,"_process":200,"buffer":192,"core-util-is":207,"inherits":197,"stream":212}],207:[function(require,module,exports){
(function (Buffer){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

// NOTE: These type checking functions intentionally don't use `instanceof`
// because it is fragile and can be easily faked with `Object.create()`.
function isArray(ar) {
  return Array.isArray(ar);
}
exports.isArray = isArray;

function isBoolean(arg) {
  return typeof arg === 'boolean';
}
exports.isBoolean = isBoolean;

function isNull(arg) {
  return arg === null;
}
exports.isNull = isNull;

function isNullOrUndefined(arg) {
  return arg == null;
}
exports.isNullOrUndefined = isNullOrUndefined;

function isNumber(arg) {
  return typeof arg === 'number';
}
exports.isNumber = isNumber;

function isString(arg) {
  return typeof arg === 'string';
}
exports.isString = isString;

function isSymbol(arg) {
  return typeof arg === 'symbol';
}
exports.isSymbol = isSymbol;

function isUndefined(arg) {
  return arg === void 0;
}
exports.isUndefined = isUndefined;

function isRegExp(re) {
  return isObject(re) && objectToString(re) === '[object RegExp]';
}
exports.isRegExp = isRegExp;

function isObject(arg) {
  return typeof arg === 'object' && arg !== null;
}
exports.isObject = isObject;

function isDate(d) {
  return isObject(d) && objectToString(d) === '[object Date]';
}
exports.isDate = isDate;

function isError(e) {
  return isObject(e) &&
      (objectToString(e) === '[object Error]' || e instanceof Error);
}
exports.isError = isError;

function isFunction(arg) {
  return typeof arg === 'function';
}
exports.isFunction = isFunction;

function isPrimitive(arg) {
  return arg === null ||
         typeof arg === 'boolean' ||
         typeof arg === 'number' ||
         typeof arg === 'string' ||
         typeof arg === 'symbol' ||  // ES6 symbol
         typeof arg === 'undefined';
}
exports.isPrimitive = isPrimitive;

function isBuffer(arg) {
  return Buffer.isBuffer(arg);
}
exports.isBuffer = isBuffer;

function objectToString(o) {
  return Object.prototype.toString.call(o);
}
}).call(this,require("buffer").Buffer)
},{"buffer":192}],208:[function(require,module,exports){
module.exports = require("./lib/_stream_passthrough.js")

},{"./lib/_stream_passthrough.js":203}],209:[function(require,module,exports){
exports = module.exports = require('./lib/_stream_readable.js');
exports.Stream = require('stream');
exports.Readable = exports;
exports.Writable = require('./lib/_stream_writable.js');
exports.Duplex = require('./lib/_stream_duplex.js');
exports.Transform = require('./lib/_stream_transform.js');
exports.PassThrough = require('./lib/_stream_passthrough.js');

},{"./lib/_stream_duplex.js":202,"./lib/_stream_passthrough.js":203,"./lib/_stream_readable.js":204,"./lib/_stream_transform.js":205,"./lib/_stream_writable.js":206,"stream":212}],210:[function(require,module,exports){
module.exports = require("./lib/_stream_transform.js")

},{"./lib/_stream_transform.js":205}],211:[function(require,module,exports){
module.exports = require("./lib/_stream_writable.js")

},{"./lib/_stream_writable.js":206}],212:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

module.exports = Stream;

var EE = require('events').EventEmitter;
var inherits = require('inherits');

inherits(Stream, EE);
Stream.Readable = require('readable-stream/readable.js');
Stream.Writable = require('readable-stream/writable.js');
Stream.Duplex = require('readable-stream/duplex.js');
Stream.Transform = require('readable-stream/transform.js');
Stream.PassThrough = require('readable-stream/passthrough.js');

// Backwards-compat with node 0.4.x
Stream.Stream = Stream;



// old-style streams.  Note that the pipe method (the only relevant
// part of this class) is overridden in the Readable class.

function Stream() {
  EE.call(this);
}

Stream.prototype.pipe = function(dest, options) {
  var source = this;

  function ondata(chunk) {
    if (dest.writable) {
      if (false === dest.write(chunk) && source.pause) {
        source.pause();
      }
    }
  }

  source.on('data', ondata);

  function ondrain() {
    if (source.readable && source.resume) {
      source.resume();
    }
  }

  dest.on('drain', ondrain);

  // If the 'end' option is not supplied, dest.end() will be called when
  // source gets the 'end' or 'close' events.  Only dest.end() once.
  if (!dest._isStdio && (!options || options.end !== false)) {
    source.on('end', onend);
    source.on('close', onclose);
  }

  var didOnEnd = false;
  function onend() {
    if (didOnEnd) return;
    didOnEnd = true;

    dest.end();
  }


  function onclose() {
    if (didOnEnd) return;
    didOnEnd = true;

    if (typeof dest.destroy === 'function') dest.destroy();
  }

  // don't leave dangling pipes when there are errors.
  function onerror(er) {
    cleanup();
    if (EE.listenerCount(this, 'error') === 0) {
      throw er; // Unhandled stream error in pipe.
    }
  }

  source.on('error', onerror);
  dest.on('error', onerror);

  // remove all the event listeners that were added.
  function cleanup() {
    source.removeListener('data', ondata);
    dest.removeListener('drain', ondrain);

    source.removeListener('end', onend);
    source.removeListener('close', onclose);

    source.removeListener('error', onerror);
    dest.removeListener('error', onerror);

    source.removeListener('end', cleanup);
    source.removeListener('close', cleanup);

    dest.removeListener('close', cleanup);
  }

  source.on('end', cleanup);
  source.on('close', cleanup);

  dest.on('close', cleanup);

  dest.emit('pipe', source);

  // Allow for unix-like usage: A.pipe(B).pipe(C)
  return dest;
};

},{"events":196,"inherits":197,"readable-stream/duplex.js":201,"readable-stream/passthrough.js":208,"readable-stream/readable.js":209,"readable-stream/transform.js":210,"readable-stream/writable.js":211}],213:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

var Buffer = require('buffer').Buffer;

var isBufferEncoding = Buffer.isEncoding
  || function(encoding) {
       switch (encoding && encoding.toLowerCase()) {
         case 'hex': case 'utf8': case 'utf-8': case 'ascii': case 'binary': case 'base64': case 'ucs2': case 'ucs-2': case 'utf16le': case 'utf-16le': case 'raw': return true;
         default: return false;
       }
     }


function assertEncoding(encoding) {
  if (encoding && !isBufferEncoding(encoding)) {
    throw new Error('Unknown encoding: ' + encoding);
  }
}

// StringDecoder provides an interface for efficiently splitting a series of
// buffers into a series of JS strings without breaking apart multi-byte
// characters. CESU-8 is handled as part of the UTF-8 encoding.
//
// @TODO Handling all encodings inside a single object makes it very difficult
// to reason about this code, so it should be split up in the future.
// @TODO There should be a utf8-strict encoding that rejects invalid UTF-8 code
// points as used by CESU-8.
var StringDecoder = exports.StringDecoder = function(encoding) {
  this.encoding = (encoding || 'utf8').toLowerCase().replace(/[-_]/, '');
  assertEncoding(encoding);
  switch (this.encoding) {
    case 'utf8':
      // CESU-8 represents each of Surrogate Pair by 3-bytes
      this.surrogateSize = 3;
      break;
    case 'ucs2':
    case 'utf16le':
      // UTF-16 represents each of Surrogate Pair by 2-bytes
      this.surrogateSize = 2;
      this.detectIncompleteChar = utf16DetectIncompleteChar;
      break;
    case 'base64':
      // Base-64 stores 3 bytes in 4 chars, and pads the remainder.
      this.surrogateSize = 3;
      this.detectIncompleteChar = base64DetectIncompleteChar;
      break;
    default:
      this.write = passThroughWrite;
      return;
  }

  // Enough space to store all bytes of a single character. UTF-8 needs 4
  // bytes, but CESU-8 may require up to 6 (3 bytes per surrogate).
  this.charBuffer = new Buffer(6);
  // Number of bytes received for the current incomplete multi-byte character.
  this.charReceived = 0;
  // Number of bytes expected for the current incomplete multi-byte character.
  this.charLength = 0;
};


// write decodes the given buffer and returns it as JS string that is
// guaranteed to not contain any partial multi-byte characters. Any partial
// character found at the end of the buffer is buffered up, and will be
// returned when calling write again with the remaining bytes.
//
// Note: Converting a Buffer containing an orphan surrogate to a String
// currently works, but converting a String to a Buffer (via `new Buffer`, or
// Buffer#write) will replace incomplete surrogates with the unicode
// replacement character. See https://codereview.chromium.org/121173009/ .
StringDecoder.prototype.write = function(buffer) {
  var charStr = '';
  // if our last write ended with an incomplete multibyte character
  while (this.charLength) {
    // determine how many remaining bytes this buffer has to offer for this char
    var available = (buffer.length >= this.charLength - this.charReceived) ?
        this.charLength - this.charReceived :
        buffer.length;

    // add the new bytes to the char buffer
    buffer.copy(this.charBuffer, this.charReceived, 0, available);
    this.charReceived += available;

    if (this.charReceived < this.charLength) {
      // still not enough chars in this buffer? wait for more ...
      return '';
    }

    // remove bytes belonging to the current character from the buffer
    buffer = buffer.slice(available, buffer.length);

    // get the character that was split
    charStr = this.charBuffer.slice(0, this.charLength).toString(this.encoding);

    // CESU-8: lead surrogate (D800-DBFF) is also the incomplete character
    var charCode = charStr.charCodeAt(charStr.length - 1);
    if (charCode >= 0xD800 && charCode <= 0xDBFF) {
      this.charLength += this.surrogateSize;
      charStr = '';
      continue;
    }
    this.charReceived = this.charLength = 0;

    // if there are no more bytes in this buffer, just emit our char
    if (buffer.length === 0) {
      return charStr;
    }
    break;
  }

  // determine and set charLength / charReceived
  this.detectIncompleteChar(buffer);

  var end = buffer.length;
  if (this.charLength) {
    // buffer the incomplete character bytes we got
    buffer.copy(this.charBuffer, 0, buffer.length - this.charReceived, end);
    end -= this.charReceived;
  }

  charStr += buffer.toString(this.encoding, 0, end);

  var end = charStr.length - 1;
  var charCode = charStr.charCodeAt(end);
  // CESU-8: lead surrogate (D800-DBFF) is also the incomplete character
  if (charCode >= 0xD800 && charCode <= 0xDBFF) {
    var size = this.surrogateSize;
    this.charLength += size;
    this.charReceived += size;
    this.charBuffer.copy(this.charBuffer, size, 0, size);
    buffer.copy(this.charBuffer, 0, 0, size);
    return charStr.substring(0, end);
  }

  // or just emit the charStr
  return charStr;
};

// detectIncompleteChar determines if there is an incomplete UTF-8 character at
// the end of the given buffer. If so, it sets this.charLength to the byte
// length that character, and sets this.charReceived to the number of bytes
// that are available for this character.
StringDecoder.prototype.detectIncompleteChar = function(buffer) {
  // determine how many bytes we have to check at the end of this buffer
  var i = (buffer.length >= 3) ? 3 : buffer.length;

  // Figure out if one of the last i bytes of our buffer announces an
  // incomplete char.
  for (; i > 0; i--) {
    var c = buffer[buffer.length - i];

    // See http://en.wikipedia.org/wiki/UTF-8#Description

    // 110XXXXX
    if (i == 1 && c >> 5 == 0x06) {
      this.charLength = 2;
      break;
    }

    // 1110XXXX
    if (i <= 2 && c >> 4 == 0x0E) {
      this.charLength = 3;
      break;
    }

    // 11110XXX
    if (i <= 3 && c >> 3 == 0x1E) {
      this.charLength = 4;
      break;
    }
  }
  this.charReceived = i;
};

StringDecoder.prototype.end = function(buffer) {
  var res = '';
  if (buffer && buffer.length)
    res = this.write(buffer);

  if (this.charReceived) {
    var cr = this.charReceived;
    var buf = this.charBuffer;
    var enc = this.encoding;
    res += buf.slice(0, cr).toString(enc);
  }

  return res;
};

function passThroughWrite(buffer) {
  return buffer.toString(this.encoding);
}

function utf16DetectIncompleteChar(buffer) {
  this.charReceived = buffer.length % 2;
  this.charLength = this.charReceived ? 2 : 0;
}

function base64DetectIncompleteChar(buffer) {
  this.charReceived = buffer.length % 3;
  this.charLength = this.charReceived ? 3 : 0;
}

},{"buffer":192}],214:[function(require,module,exports){
exports.isatty = function () { return false; };

function ReadStream() {
  throw new Error('tty.ReadStream is not implemented');
}
exports.ReadStream = ReadStream;

function WriteStream() {
  throw new Error('tty.ReadStream is not implemented');
}
exports.WriteStream = WriteStream;

},{}],215:[function(require,module,exports){
module.exports = function isBuffer(arg) {
  return arg && typeof arg === 'object'
    && typeof arg.copy === 'function'
    && typeof arg.fill === 'function'
    && typeof arg.readUInt8 === 'function';
}
},{}],216:[function(require,module,exports){
(function (process,global){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

var formatRegExp = /%[sdj%]/g;
exports.format = function(f) {
  if (!isString(f)) {
    var objects = [];
    for (var i = 0; i < arguments.length; i++) {
      objects.push(inspect(arguments[i]));
    }
    return objects.join(' ');
  }

  var i = 1;
  var args = arguments;
  var len = args.length;
  var str = String(f).replace(formatRegExp, function(x) {
    if (x === '%%') return '%';
    if (i >= len) return x;
    switch (x) {
      case '%s': return String(args[i++]);
      case '%d': return Number(args[i++]);
      case '%j':
        try {
          return JSON.stringify(args[i++]);
        } catch (_) {
          return '[Circular]';
        }
      default:
        return x;
    }
  });
  for (var x = args[i]; i < len; x = args[++i]) {
    if (isNull(x) || !isObject(x)) {
      str += ' ' + x;
    } else {
      str += ' ' + inspect(x);
    }
  }
  return str;
};


// Mark that a method should not be used.
// Returns a modified function which warns once by default.
// If --no-deprecation is set, then it is a no-op.
exports.deprecate = function(fn, msg) {
  // Allow for deprecating things in the process of starting up.
  if (isUndefined(global.process)) {
    return function() {
      return exports.deprecate(fn, msg).apply(this, arguments);
    };
  }

  if (process.noDeprecation === true) {
    return fn;
  }

  var warned = false;
  function deprecated() {
    if (!warned) {
      if (process.throwDeprecation) {
        throw new Error(msg);
      } else if (process.traceDeprecation) {
        console.trace(msg);
      } else {
        console.error(msg);
      }
      warned = true;
    }
    return fn.apply(this, arguments);
  }

  return deprecated;
};


var debugs = {};
var debugEnviron;
exports.debuglog = function(set) {
  if (isUndefined(debugEnviron))
    debugEnviron = process.env.NODE_DEBUG || '';
  set = set.toUpperCase();
  if (!debugs[set]) {
    if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) {
      var pid = process.pid;
      debugs[set] = function() {
        var msg = exports.format.apply(exports, arguments);
        console.error('%s %d: %s', set, pid, msg);
      };
    } else {
      debugs[set] = function() {};
    }
  }
  return debugs[set];
};


/**
 * Echos the value of a value. Trys to print the value out
 * in the best way possible given the different types.
 *
 * @param {Object} obj The object to print out.
 * @param {Object} opts Optional options object that alters the output.
 */
/* legacy: obj, showHidden, depth, colors*/
function inspect(obj, opts) {
  // default options
  var ctx = {
    seen: [],
    stylize: stylizeNoColor
  };
  // legacy...
  if (arguments.length >= 3) ctx.depth = arguments[2];
  if (arguments.length >= 4) ctx.colors = arguments[3];
  if (isBoolean(opts)) {
    // legacy...
    ctx.showHidden = opts;
  } else if (opts) {
    // got an "options" object
    exports._extend(ctx, opts);
  }
  // set default options
  if (isUndefined(ctx.showHidden)) ctx.showHidden = false;
  if (isUndefined(ctx.depth)) ctx.depth = 2;
  if (isUndefined(ctx.colors)) ctx.colors = false;
  if (isUndefined(ctx.customInspect)) ctx.customInspect = true;
  if (ctx.colors) ctx.stylize = stylizeWithColor;
  return formatValue(ctx, obj, ctx.depth);
}
exports.inspect = inspect;


// http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
inspect.colors = {
  'bold' : [1, 22],
  'italic' : [3, 23],
  'underline' : [4, 24],
  'inverse' : [7, 27],
  'white' : [37, 39],
  'grey' : [90, 39],
  'black' : [30, 39],
  'blue' : [34, 39],
  'cyan' : [36, 39],
  'green' : [32, 39],
  'magenta' : [35, 39],
  'red' : [31, 39],
  'yellow' : [33, 39]
};

// Don't use 'blue' not visible on cmd.exe
inspect.styles = {
  'special': 'cyan',
  'number': 'yellow',
  'boolean': 'yellow',
  'undefined': 'grey',
  'null': 'bold',
  'string': 'green',
  'date': 'magenta',
  // "name": intentionally not styling
  'regexp': 'red'
};


function stylizeWithColor(str, styleType) {
  var style = inspect.styles[styleType];

  if (style) {
    return '\u001b[' + inspect.colors[style][0] + 'm' + str +
           '\u001b[' + inspect.colors[style][1] + 'm';
  } else {
    return str;
  }
}


function stylizeNoColor(str, styleType) {
  return str;
}


function arrayToHash(array) {
  var hash = {};

  array.forEach(function(val, idx) {
    hash[val] = true;
  });

  return hash;
}


function formatValue(ctx, value, recurseTimes) {
  // Provide a hook for user-specified inspect functions.
  // Check that value is an object with an inspect function on it
  if (ctx.customInspect &&
      value &&
      isFunction(value.inspect) &&
      // Filter out the util module, it's inspect function is special
      value.inspect !== exports.inspect &&
      // Also filter out any prototype objects using the circular check.
      !(value.constructor && value.constructor.prototype === value)) {
    var ret = value.inspect(recurseTimes, ctx);
    if (!isString(ret)) {
      ret = formatValue(ctx, ret, recurseTimes);
    }
    return ret;
  }

  // Primitive types cannot have properties
  var primitive = formatPrimitive(ctx, value);
  if (primitive) {
    return primitive;
  }

  // Look up the keys of the object.
  var keys = Object.keys(value);
  var visibleKeys = arrayToHash(keys);

  if (ctx.showHidden) {
    keys = Object.getOwnPropertyNames(value);
  }

  // IE doesn't make error fields non-enumerable
  // http://msdn.microsoft.com/en-us/library/ie/dww52sbt(v=vs.94).aspx
  if (isError(value)
      && (keys.indexOf('message') >= 0 || keys.indexOf('description') >= 0)) {
    return formatError(value);
  }

  // Some type of object without properties can be shortcutted.
  if (keys.length === 0) {
    if (isFunction(value)) {
      var name = value.name ? ': ' + value.name : '';
      return ctx.stylize('[Function' + name + ']', 'special');
    }
    if (isRegExp(value)) {
      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
    }
    if (isDate(value)) {
      return ctx.stylize(Date.prototype.toString.call(value), 'date');
    }
    if (isError(value)) {
      return formatError(value);
    }
  }

  var base = '', array = false, braces = ['{', '}'];

  // Make Array say that they are Array
  if (isArray(value)) {
    array = true;
    braces = ['[', ']'];
  }

  // Make functions say that they are functions
  if (isFunction(value)) {
    var n = value.name ? ': ' + value.name : '';
    base = ' [Function' + n + ']';
  }

  // Make RegExps say that they are RegExps
  if (isRegExp(value)) {
    base = ' ' + RegExp.prototype.toString.call(value);
  }

  // Make dates with properties first say the date
  if (isDate(value)) {
    base = ' ' + Date.prototype.toUTCString.call(value);
  }

  // Make error with message first say the error
  if (isError(value)) {
    base = ' ' + formatError(value);
  }

  if (keys.length === 0 && (!array || value.length == 0)) {
    return braces[0] + base + braces[1];
  }

  if (recurseTimes < 0) {
    if (isRegExp(value)) {
      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
    } else {
      return ctx.stylize('[Object]', 'special');
    }
  }

  ctx.seen.push(value);

  var output;
  if (array) {
    output = formatArray(ctx, value, recurseTimes, visibleKeys, keys);
  } else {
    output = keys.map(function(key) {
      return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array);
    });
  }

  ctx.seen.pop();

  return reduceToSingleString(output, base, braces);
}


function formatPrimitive(ctx, value) {
  if (isUndefined(value))
    return ctx.stylize('undefined', 'undefined');
  if (isString(value)) {
    var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '')
                                             .replace(/'/g, "\\'")
                                             .replace(/\\"/g, '"') + '\'';
    return ctx.stylize(simple, 'string');
  }
  if (isNumber(value))
    return ctx.stylize('' + value, 'number');
  if (isBoolean(value))
    return ctx.stylize('' + value, 'boolean');
  // For some reason typeof null is "object", so special case here.
  if (isNull(value))
    return ctx.stylize('null', 'null');
}


function formatError(value) {
  return '[' + Error.prototype.toString.call(value) + ']';
}


function formatArray(ctx, value, recurseTimes, visibleKeys, keys) {
  var output = [];
  for (var i = 0, l = value.length; i < l; ++i) {
    if (hasOwnProperty(value, String(i))) {
      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
          String(i), true));
    } else {
      output.push('');
    }
  }
  keys.forEach(function(key) {
    if (!key.match(/^\d+$/)) {
      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
          key, true));
    }
  });
  return output;
}


function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) {
  var name, str, desc;
  desc = Object.getOwnPropertyDescriptor(value, key) || { value: value[key] };
  if (desc.get) {
    if (desc.set) {
      str = ctx.stylize('[Getter/Setter]', 'special');
    } else {
      str = ctx.stylize('[Getter]', 'special');
    }
  } else {
    if (desc.set) {
      str = ctx.stylize('[Setter]', 'special');
    }
  }
  if (!hasOwnProperty(visibleKeys, key)) {
    name = '[' + key + ']';
  }
  if (!str) {
    if (ctx.seen.indexOf(desc.value) < 0) {
      if (isNull(recurseTimes)) {
        str = formatValue(ctx, desc.value, null);
      } else {
        str = formatValue(ctx, desc.value, recurseTimes - 1);
      }
      if (str.indexOf('\n') > -1) {
        if (array) {
          str = str.split('\n').map(function(line) {
            return '  ' + line;
          }).join('\n').substr(2);
        } else {
          str = '\n' + str.split('\n').map(function(line) {
            return '   ' + line;
          }).join('\n');
        }
      }
    } else {
      str = ctx.stylize('[Circular]', 'special');
    }
  }
  if (isUndefined(name)) {
    if (array && key.match(/^\d+$/)) {
      return str;
    }
    name = JSON.stringify('' + key);
    if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) {
      name = name.substr(1, name.length - 2);
      name = ctx.stylize(name, 'name');
    } else {
      name = name.replace(/'/g, "\\'")
                 .replace(/\\"/g, '"')
                 .replace(/(^"|"$)/g, "'");
      name = ctx.stylize(name, 'string');
    }
  }

  return name + ': ' + str;
}


function reduceToSingleString(output, base, braces) {
  var numLinesEst = 0;
  var length = output.reduce(function(prev, cur) {
    numLinesEst++;
    if (cur.indexOf('\n') >= 0) numLinesEst++;
    return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1;
  }, 0);

  if (length > 60) {
    return braces[0] +
           (base === '' ? '' : base + '\n ') +
           ' ' +
           output.join(',\n  ') +
           ' ' +
           braces[1];
  }

  return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1];
}


// NOTE: These type checking functions intentionally don't use `instanceof`
// because it is fragile and can be easily faked with `Object.create()`.
function isArray(ar) {
  return Array.isArray(ar);
}
exports.isArray = isArray;

function isBoolean(arg) {
  return typeof arg === 'boolean';
}
exports.isBoolean = isBoolean;

function isNull(arg) {
  return arg === null;
}
exports.isNull = isNull;

function isNullOrUndefined(arg) {
  return arg == null;
}
exports.isNullOrUndefined = isNullOrUndefined;

function isNumber(arg) {
  return typeof arg === 'number';
}
exports.isNumber = isNumber;

function isString(arg) {
  return typeof arg === 'string';
}
exports.isString = isString;

function isSymbol(arg) {
  return typeof arg === 'symbol';
}
exports.isSymbol = isSymbol;

function isUndefined(arg) {
  return arg === void 0;
}
exports.isUndefined = isUndefined;

function isRegExp(re) {
  return isObject(re) && objectToString(re) === '[object RegExp]';
}
exports.isRegExp = isRegExp;

function isObject(arg) {
  return typeof arg === 'object' && arg !== null;
}
exports.isObject = isObject;

function isDate(d) {
  return isObject(d) && objectToString(d) === '[object Date]';
}
exports.isDate = isDate;

function isError(e) {
  return isObject(e) &&
      (objectToString(e) === '[object Error]' || e instanceof Error);
}
exports.isError = isError;

function isFunction(arg) {
  return typeof arg === 'function';
}
exports.isFunction = isFunction;

function isPrimitive(arg) {
  return arg === null ||
         typeof arg === 'boolean' ||
         typeof arg === 'number' ||
         typeof arg === 'string' ||
         typeof arg === 'symbol' ||  // ES6 symbol
         typeof arg === 'undefined';
}
exports.isPrimitive = isPrimitive;

exports.isBuffer = require('./support/isBuffer');

function objectToString(o) {
  return Object.prototype.toString.call(o);
}


function pad(n) {
  return n < 10 ? '0' + n.toString(10) : n.toString(10);
}


var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep',
              'Oct', 'Nov', 'Dec'];

// 26 Feb 16:19:34
function timestamp() {
  var d = new Date();
  var time = [pad(d.getHours()),
              pad(d.getMinutes()),
              pad(d.getSeconds())].join(':');
  return [d.getDate(), months[d.getMonth()], time].join(' ');
}


// log is just a thin wrapper to console.log that prepends a timestamp
exports.log = function() {
  console.log('%s - %s', timestamp(), exports.format.apply(exports, arguments));
};


/**
 * Inherit the prototype methods from one constructor into another.
 *
 * The Function.prototype.inherits from lang.js rewritten as a standalone
 * function (not on Function.prototype). NOTE: If this file is to be loaded
 * during bootstrapping this function needs to be rewritten using some native
 * functions as prototype setup using normal JavaScript does not work as
 * expected during bootstrapping (see mirror.js in r114903).
 *
 * @param {function} ctor Constructor function which needs to inherit the
 *     prototype.
 * @param {function} superCtor Constructor function to inherit prototype from.
 */
exports.inherits = require('inherits');

exports._extend = function(origin, add) {
  // Don't do anything if add isn't an object
  if (!add || !isObject(add)) return origin;

  var keys = Object.keys(add);
  var i = keys.length;
  while (i--) {
    origin[keys[i]] = add[keys[i]];
  }
  return origin;
};

function hasOwnProperty(obj, prop) {
  return Object.prototype.hasOwnProperty.call(obj, prop);
}

}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./support/isBuffer":215,"_process":200,"inherits":197}],217:[function(require,module,exports){
(function (process){
'use strict';
var escapeStringRegexp = require('escape-string-regexp');
var ansiStyles = require('ansi-styles');
var stripAnsi = require('strip-ansi');
var hasAnsi = require('has-ansi');
var supportsColor = require('supports-color');
var defineProps = Object.defineProperties;

function Chalk(options) {
	// detect mode if not set manually
	this.enabled = !options || options.enabled === undefined ? supportsColor : options.enabled;
}

// use bright blue on Windows as the normal blue color is illegible
if (process.platform === 'win32') {
	ansiStyles.blue.open = '\u001b[94m';
}

function build(_styles) {
	var builder = function builder() {
		return applyStyle.apply(builder, arguments);
	};
	builder._styles = _styles;
	builder.enabled = this.enabled;
	// __proto__ is used because we must return a function, but there is
	// no way to create a function with a different prototype.
	builder.__proto__ = proto;
	return builder;
}

var styles = (function () {
	var ret = {};

	Object.keys(ansiStyles).forEach(function (key) {
		ansiStyles[key].closeRe = new RegExp(escapeStringRegexp(ansiStyles[key].close), 'g');

		ret[key] = {
			get: function () {
				return build.call(this, this._styles.concat(key));
			}
		};
	});

	return ret;
})();

var proto = defineProps(function chalk() {}, styles);

function applyStyle() {
	// support varags, but simply cast to string in case there's only one arg
	var args = arguments;
	var argsLen = args.length;
	var str = argsLen !== 0 && String(arguments[0]);
	if (argsLen > 1) {
		// don't slice `arguments`, it prevents v8 optimizations
		for (var a = 1; a < argsLen; a++) {
			str += ' ' + args[a];
		}
	}

	if (!this.enabled || !str) {
		return str;
	}

	/*jshint validthis: true */
	var nestedStyles = this._styles;

	var i = nestedStyles.length;
	while (i--) {
		var code = ansiStyles[nestedStyles[i]];
		// Replace any instances already present with a re-opening code
		// otherwise only the part of the string until said closing code
		// will be colored, and the rest will simply be 'plain'.
		str = code.open + str.replace(code.closeRe, code.open) + code.close;
	}

	return str;
}

function init() {
	var ret = {};

	Object.keys(styles).forEach(function (name) {
		ret[name] = {
			get: function () {
				return build.call(this, [name]);
			}
		};
	});

	return ret;
}

defineProps(Chalk.prototype, init());

module.exports = new Chalk();
module.exports.styles = ansiStyles;
module.exports.hasColor = hasAnsi;
module.exports.stripColor = stripAnsi;
module.exports.supportsColor = supportsColor;

}).call(this,require('_process'))
},{"_process":200,"ansi-styles":218,"escape-string-regexp":219,"has-ansi":220,"strip-ansi":222,"supports-color":224}],218:[function(require,module,exports){
'use strict';

var styles = module.exports = {
	modifiers: {
		reset: [0, 0],
		bold: [1, 22], // 21 isn't widely supported and 22 does the same thing
		dim: [2, 22],
		italic: [3, 23],
		underline: [4, 24],
		inverse: [7, 27],
		hidden: [8, 28],
		strikethrough: [9, 29]
	},
	colors: {
		black: [30, 39],
		red: [31, 39],
		green: [32, 39],
		yellow: [33, 39],
		blue: [34, 39],
		magenta: [35, 39],
		cyan: [36, 39],
		white: [37, 39],
		gray: [90, 39]
	},
	bgColors: {
		bgBlack: [40, 49],
		bgRed: [41, 49],
		bgGreen: [42, 49],
		bgYellow: [43, 49],
		bgBlue: [44, 49],
		bgMagenta: [45, 49],
		bgCyan: [46, 49],
		bgWhite: [47, 49]
	}
};

// fix humans
styles.colors.grey = styles.colors.gray;

Object.keys(styles).forEach(function (groupName) {
	var group = styles[groupName];

	Object.keys(group).forEach(function (styleName) {
		var style = group[styleName];

		styles[styleName] = group[styleName] = {
			open: '\u001b[' + style[0] + 'm',
			close: '\u001b[' + style[1] + 'm'
		};
	});

	Object.defineProperty(styles, groupName, {
		value: group,
		enumerable: false
	});
});

},{}],219:[function(require,module,exports){
'use strict';

var matchOperatorsRe = /[|\\{}()[\]^$+*?.]/g;

module.exports = function (str) {
	if (typeof str !== 'string') {
		throw new TypeError('Expected a string');
	}

	return str.replace(matchOperatorsRe,  '\\$&');
};

},{}],220:[function(require,module,exports){
'use strict';
var ansiRegex = require('ansi-regex');
var re = new RegExp(ansiRegex().source); // remove the `g` flag
module.exports = re.test.bind(re);

},{"ansi-regex":221}],221:[function(require,module,exports){
'use strict';
module.exports = function () {
	return /(?:(?:\u001b\[)|\u009b)(?:(?:[0-9]{1,3})?(?:(?:;[0-9]{0,3})*)?[A-M|f-m])|\u001b[A-M]/g;
};

},{}],222:[function(require,module,exports){
'use strict';
var ansiRegex = require('ansi-regex')();

module.exports = function (str) {
	return typeof str === 'string' ? str.replace(ansiRegex, '') : str;
};

},{"ansi-regex":223}],223:[function(require,module,exports){
arguments[4][221][0].apply(exports,arguments)
},{"dup":221}],224:[function(require,module,exports){
(function (process){
'use strict';
var argv = process.argv;

module.exports = (function () {
	if ('FORCE_COLOR' in process.env) {
		return true;
	}

	if (argv.indexOf('--no-color') !== -1 ||
		argv.indexOf('--no-colors') !== -1 ||
		argv.indexOf('--color=false') !== -1) {
		return false;
	}

	if (argv.indexOf('--color') !== -1 ||
		argv.indexOf('--colors') !== -1 ||
		argv.indexOf('--color=true') !== -1 ||
		argv.indexOf('--color=always') !== -1) {
		return true;
	}

	if (process.stdout && !process.stdout.isTTY) {
		return false;
	}

	if (process.platform === 'win32') {
		return true;
	}

	if ('COLORTERM' in process.env) {
		return true;
	}

	if (process.env.TERM === 'dumb') {
		return false;
	}

	if (/^screen|^xterm|^vt100|color|ansi|cygwin|linux/i.test(process.env.TERM)) {
		return true;
	}

	return false;
})();

}).call(this,require('_process'))
},{"_process":200}],225:[function(require,module,exports){
(function (Buffer){
'use strict';
var fs = require('fs');
var path = require('path');

var commentRx = /^\s*\/(?:\/|\*)[@#]\s+sourceMappingURL=data:(?:application|text)\/json;(?:charset[:=]\S+;)?base64,(.*)$/mg;
var mapFileCommentRx =
  // //# sourceMappingURL=foo.js.map                       /*# sourceMappingURL=foo.js.map */
  /(?:\/\/[@#][ \t]+sourceMappingURL=(.+?)[ \t]*$)|(?:\/\*[@#][ \t]+sourceMappingURL=([^\*]+?)[ \t]*(?:\*\/){1}[ \t]*$)/mg

function decodeBase64(base64) {
  return new Buffer(base64, 'base64').toString();
}

function stripComment(sm) {
  return sm.split(',').pop();
}

function readFromFileMap(sm, dir) {
  // NOTE: this will only work on the server since it attempts to read the map file

  var r = mapFileCommentRx.exec(sm);
  mapFileCommentRx.lastIndex = 0;
  
  // for some odd reason //# .. captures in 1 and /* .. */ in 2
  var filename = r[1] || r[2];
  var filepath = path.join(dir, filename);

  try {
    return fs.readFileSync(filepath, 'utf8');
  } catch (e) {
    throw new Error('An error occurred while trying to read the map file at ' + filepath + '\n' + e);
  }
}

function Converter (sm, opts) {
  opts = opts || {};

  if (opts.isFileComment) sm = readFromFileMap(sm, opts.commentFileDir);
  if (opts.hasComment) sm = stripComment(sm);
  if (opts.isEncoded) sm = decodeBase64(sm);
  if (opts.isJSON || opts.isEncoded) sm = JSON.parse(sm);

  this.sourcemap = sm;
}

function convertFromLargeSource(content){
  var lines = content.split('\n');
  var line;
  // find first line which contains a source map starting at end of content 
  for (var i = lines.length - 1; i > 0; i--) {
    line = lines[i]
    if (~line.indexOf('sourceMappingURL=data:')) return exports.fromComment(line);
  }
}

Converter.prototype.toJSON = function (space) {
  return JSON.stringify(this.sourcemap, null, space);
};

Converter.prototype.toBase64 = function () {
  var json = this.toJSON();
  return new Buffer(json).toString('base64');
};

Converter.prototype.toComment = function (options) {
  var base64 = this.toBase64();
  var data = 'sourceMappingURL=data:application/json;base64,' + base64;
  return options && options.multiline ? '/*# ' + data + ' */' : '//# ' + data;
};

// returns copy instead of original
Converter.prototype.toObject = function () {
  return JSON.parse(this.toJSON());
};

Converter.prototype.addProperty = function (key, value) {
  if (this.sourcemap.hasOwnProperty(key)) throw new Error('property %s already exists on the sourcemap, use set property instead');
  return this.setProperty(key, value);
};

Converter.prototype.setProperty = function (key, value) {
  this.sourcemap[key] = value;
  return this;
};

Converter.prototype.getProperty = function (key) {
  return this.sourcemap[key];
};

exports.fromObject = function (obj) {
  return new Converter(obj);
};

exports.fromJSON = function (json) {
  return new Converter(json, { isJSON: true });
};

exports.fromBase64 = function (base64) {
  return new Converter(base64, { isEncoded: true });
};

exports.fromComment = function (comment) {
  comment = comment
    .replace(/^\/\*/g, '//')
    .replace(/\*\/$/g, '');

  return new Converter(comment, { isEncoded: true, hasComment: true });
};

exports.fromMapFileComment = function (comment, dir) {
  return new Converter(comment, { commentFileDir: dir, isFileComment: true, isJSON: true });
};

// Finds last sourcemap comment in file or returns null if none was found
exports.fromSource = function (content, largeSource) {
  if (largeSource) return convertFromLargeSource(content);

  var m = content.match(commentRx);
  commentRx.lastIndex = 0;
  return m ? exports.fromComment(m.pop()) : null;
};

// Finds last sourcemap comment in file or returns null if none was found
exports.fromMapFileSource = function (content, dir) {
  var m = content.match(mapFileCommentRx);
  mapFileCommentRx.lastIndex = 0;
  return m ? exports.fromMapFileComment(m.pop(), dir) : null;
};

exports.removeComments = function (src) {
  commentRx.lastIndex = 0;
  return src.replace(commentRx, '');
};

exports.removeMapFileComments = function (src) {
  mapFileCommentRx.lastIndex = 0;
  return src.replace(mapFileCommentRx, '');
};

Object.defineProperty(exports, 'commentRegex', {
  get: function getCommentRegex () {
    commentRx.lastIndex = 0;
    return commentRx;
  }
});

Object.defineProperty(exports, 'mapFileCommentRegex', {
  get: function getMapFileCommentRegex () {
    mapFileCommentRx.lastIndex = 0;
    return mapFileCommentRx;
  }
});

}).call(this,require("buffer").Buffer)
},{"buffer":192,"fs":189,"path":199}],226:[function(require,module,exports){
'use strict';
// false -> Array#indexOf
// true  -> Array#includes
var $ = require('./$');
module.exports = function(IS_INCLUDES){
  return function(el /*, fromIndex = 0 */){
    var O      = $.toObject(this)
      , length = $.toLength(O.length)
      , index  = $.toIndex(arguments[1], length)
      , value;
    if(IS_INCLUDES && el != el)while(length > index){
      value = O[index++];
      if(value != value)return true;
    } else for(;length > index; index++)if(IS_INCLUDES || index in O){
      if(O[index] === el)return IS_INCLUDES || index;
    } return !IS_INCLUDES && -1;
  };
};
},{"./$":245}],227:[function(require,module,exports){
'use strict';
// 0 -> Array#forEach
// 1 -> Array#map
// 2 -> Array#filter
// 3 -> Array#some
// 4 -> Array#every
// 5 -> Array#find
// 6 -> Array#findIndex
var $   = require('./$')
  , ctx = require('./$.ctx');
module.exports = function(TYPE){
  var IS_MAP        = TYPE == 1
    , IS_FILTER     = TYPE == 2
    , IS_SOME       = TYPE == 3
    , IS_EVERY      = TYPE == 4
    , IS_FIND_INDEX = TYPE == 6
    , NO_HOLES      = TYPE == 5 || IS_FIND_INDEX;
  return function(callbackfn/*, that = undefined */){
    var O      = Object($.assertDefined(this))
      , self   = $.ES5Object(O)
      , f      = ctx(callbackfn, arguments[1], 3)
      , length = $.toLength(self.length)
      , index  = 0
      , result = IS_MAP ? Array(length) : IS_FILTER ? [] : undefined
      , val, res;
    for(;length > index; index++)if(NO_HOLES || index in self){
      val = self[index];
      res = f(val, index, O);
      if(TYPE){
        if(IS_MAP)result[index] = res;            // map
        else if(res)switch(TYPE){
          case 3: return true;                    // some
          case 5: return val;                     // find
          case 6: return index;                   // findIndex
          case 2: result.push(val);               // filter
        } else if(IS_EVERY)return false;          // every
      }
    }
    return IS_FIND_INDEX ? -1 : IS_SOME || IS_EVERY ? IS_EVERY : result;
  };
};
},{"./$":245,"./$.ctx":235}],228:[function(require,module,exports){
var $ = require('./$');
function assert(condition, msg1, msg2){
  if(!condition)throw TypeError(msg2 ? msg1 + msg2 : msg1);
}
assert.def = $.assertDefined;
assert.fn = function(it){
  if(!$.isFunction(it))throw TypeError(it + ' is not a function!');
  return it;
};
assert.obj = function(it){
  if(!$.isObject(it))throw TypeError(it + ' is not an object!');
  return it;
};
assert.inst = function(it, Constructor, name){
  if(!(it instanceof Constructor))throw TypeError(name + ": use the 'new' operator!");
  return it;
};
module.exports = assert;
},{"./$":245}],229:[function(require,module,exports){
var $        = require('./$')
  , enumKeys = require('./$.enum-keys');
// 19.1.2.1 Object.assign(target, source, ...)
/* eslint-disable no-unused-vars */
module.exports = Object.assign || function assign(target, source){
/* eslint-enable no-unused-vars */
  var T = Object($.assertDefined(target))
    , l = arguments.length
    , i = 1;
  while(l > i){
    var S      = $.ES5Object(arguments[i++])
      , keys   = enumKeys(S)
      , length = keys.length
      , j      = 0
      , key;
    while(length > j)T[key = keys[j++]] = S[key];
  }
  return T;
};
},{"./$":245,"./$.enum-keys":237}],230:[function(require,module,exports){
var $        = require('./$')
  , TAG      = require('./$.wks')('toStringTag')
  , toString = {}.toString;
function cof(it){
  return toString.call(it).slice(8, -1);
}
cof.classof = function(it){
  var O, T;
  return it == undefined ? it === undefined ? 'Undefined' : 'Null'
    : typeof (T = (O = Object(it))[TAG]) == 'string' ? T : cof(O);
};
cof.set = function(it, tag, stat){
  if(it && !$.has(it = stat ? it : it.prototype, TAG))$.hide(it, TAG, tag);
};
module.exports = cof;
},{"./$":245,"./$.wks":256}],231:[function(require,module,exports){
'use strict';
var $        = require('./$')
  , ctx      = require('./$.ctx')
  , safe     = require('./$.uid').safe
  , assert   = require('./$.assert')
  , forOf    = require('./$.for-of')
  , step     = require('./$.iter').step
  , has      = $.has
  , set      = $.set
  , isObject = $.isObject
  , hide     = $.hide
  , isFrozen = Object.isFrozen || $.core.Object.isFrozen
  , ID       = safe('id')
  , O1       = safe('O1')
  , LAST     = safe('last')
  , FIRST    = safe('first')
  , ITER     = safe('iter')
  , SIZE     = $.DESC ? safe('size') : 'size'
  , id       = 0;

function fastKey(it, create){
  // return primitive with prefix
  if(!isObject(it))return (typeof it == 'string' ? 'S' : 'P') + it;
  // can't set id to frozen object
  if(isFrozen(it))return 'F';
  if(!has(it, ID)){
    // not necessary to add id
    if(!create)return 'E';
    // add missing object id
    hide(it, ID, ++id);
  // return object id with prefix
  } return 'O' + it[ID];
}

function getEntry(that, key){
  // fast case
  var index = fastKey(key), entry;
  if(index != 'F')return that[O1][index];
  // frozen object case
  for(entry = that[FIRST]; entry; entry = entry.n){
    if(entry.k == key)return entry;
  }
}

module.exports = {
  getConstructor: function(NAME, IS_MAP, ADDER){
    function C(){
      var that     = assert.inst(this, C, NAME)
        , iterable = arguments[0];
      set(that, O1, $.create(null));
      set(that, SIZE, 0);
      set(that, LAST, undefined);
      set(that, FIRST, undefined);
      if(iterable != undefined)forOf(iterable, IS_MAP, that[ADDER], that);
    }
    $.mix(C.prototype, {
      // 23.1.3.1 Map.prototype.clear()
      // 23.2.3.2 Set.prototype.clear()
      clear: function clear(){
        for(var that = this, data = that[O1], entry = that[FIRST]; entry; entry = entry.n){
          entry.r = true;
          if(entry.p)entry.p = entry.p.n = undefined;
          delete data[entry.i];
        }
        that[FIRST] = that[LAST] = undefined;
        that[SIZE] = 0;
      },
      // 23.1.3.3 Map.prototype.delete(key)
      // 23.2.3.4 Set.prototype.delete(value)
      'delete': function(key){
        var that  = this
          , entry = getEntry(that, key);
        if(entry){
          var next = entry.n
            , prev = entry.p;
          delete that[O1][entry.i];
          entry.r = true;
          if(prev)prev.n = next;
          if(next)next.p = prev;
          if(that[FIRST] == entry)that[FIRST] = next;
          if(that[LAST] == entry)that[LAST] = prev;
          that[SIZE]--;
        } return !!entry;
      },
      // 23.2.3.6 Set.prototype.forEach(callbackfn, thisArg = undefined)
      // 23.1.3.5 Map.prototype.forEach(callbackfn, thisArg = undefined)
      forEach: function forEach(callbackfn /*, that = undefined */){
        var f = ctx(callbackfn, arguments[1], 3)
          , entry;
        while(entry = entry ? entry.n : this[FIRST]){
          f(entry.v, entry.k, this);
          // revert to the last existing entry
          while(entry && entry.r)entry = entry.p;
        }
      },
      // 23.1.3.7 Map.prototype.has(key)
      // 23.2.3.7 Set.prototype.has(value)
      has: function has(key){
        return !!getEntry(this, key);
      }
    });
    if($.DESC)$.setDesc(C.prototype, 'size', {
      get: function(){
        return assert.def(this[SIZE]);
      }
    });
    return C;
  },
  def: function(that, key, value){
    var entry = getEntry(that, key)
      , prev, index;
    // change existing entry
    if(entry){
      entry.v = value;
    // create new entry
    } else {
      that[LAST] = entry = {
        i: index = fastKey(key, true), // <- index
        k: key,                        // <- key
        v: value,                      // <- value
        p: prev = that[LAST],          // <- previous entry
        n: undefined,                  // <- next entry
        r: false                       // <- removed
      };
      if(!that[FIRST])that[FIRST] = entry;
      if(prev)prev.n = entry;
      that[SIZE]++;
      // add to index
      if(index != 'F')that[O1][index] = entry;
    } return that;
  },
  getEntry: getEntry,
  // add .keys, .values, .entries, [@@iterator]
  // 23.1.3.4, 23.1.3.8, 23.1.3.11, 23.1.3.12, 23.2.3.5, 23.2.3.8, 23.2.3.10, 23.2.3.11
  setIter: function(C, NAME, IS_MAP){
    require('./$.iter-define')(C, NAME, function(iterated, kind){
      set(this, ITER, {o: iterated, k: kind});
    }, function(){
      var iter  = this[ITER]
        , kind  = iter.k
        , entry = iter.l;
      // revert to the last existing entry
      while(entry && entry.r)entry = entry.p;
      // get next entry
      if(!iter.o || !(iter.l = entry = entry ? entry.n : iter.o[FIRST])){
        // or finish the iteration
        iter.o = undefined;
        return step(1);
      }
      // return step by kind
      if(kind == 'keys'  )return step(0, entry.k);
      if(kind == 'values')return step(0, entry.v);
      return step(0, [entry.k, entry.v]);
    }, IS_MAP ? 'entries' : 'values' , !IS_MAP, true);
  }
};
},{"./$":245,"./$.assert":228,"./$.ctx":235,"./$.for-of":238,"./$.iter":244,"./$.iter-define":242,"./$.uid":254}],232:[function(require,module,exports){
// https://github.com/DavidBruant/Map-Set.prototype.toJSON
var $def  = require('./$.def')
  , forOf = require('./$.for-of');
module.exports = function(NAME){
  $def($def.P, NAME, {
    toJSON: function toJSON(){
      var arr = [];
      forOf(this, false, arr.push, arr);
      return arr;
    }
  });
};
},{"./$.def":236,"./$.for-of":238}],233:[function(require,module,exports){
'use strict';
var $         = require('./$')
  , safe      = require('./$.uid').safe
  , assert    = require('./$.assert')
  , forOf     = require('./$.for-of')
  , _has      = $.has
  , isObject  = $.isObject
  , hide      = $.hide
  , isFrozen  = Object.isFrozen || $.core.Object.isFrozen
  , id        = 0
  , ID        = safe('id')
  , WEAK      = safe('weak')
  , LEAK      = safe('leak')
  , method    = require('./$.array-methods')
  , find      = method(5)
  , findIndex = method(6);
function findFrozen(store, key){
  return find.call(store.array, function(it){
    return it[0] === key;
  });
}
// fallback for frozen keys
function leakStore(that){
  return that[LEAK] || hide(that, LEAK, {
    array: [],
    get: function(key){
      var entry = findFrozen(this, key);
      if(entry)return entry[1];
    },
    has: function(key){
      return !!findFrozen(this, key);
    },
    set: function(key, value){
      var entry = findFrozen(this, key);
      if(entry)entry[1] = value;
      else this.array.push([key, value]);
    },
    'delete': function(key){
      var index = findIndex.call(this.array, function(it){
        return it[0] === key;
      });
      if(~index)this.array.splice(index, 1);
      return !!~index;
    }
  })[LEAK];
}

module.exports = {
  getConstructor: function(NAME, IS_MAP, ADDER){
    function C(){
      $.set(assert.inst(this, C, NAME), ID, id++);
      var iterable = arguments[0];
      if(iterable != undefined)forOf(iterable, IS_MAP, this[ADDER], this);
    }
    $.mix(C.prototype, {
      // 23.3.3.2 WeakMap.prototype.delete(key)
      // 23.4.3.3 WeakSet.prototype.delete(value)
      'delete': function(key){
        if(!isObject(key))return false;
        if(isFrozen(key))return leakStore(this)['delete'](key);
        return _has(key, WEAK) && _has(key[WEAK], this[ID]) && delete key[WEAK][this[ID]];
      },
      // 23.3.3.4 WeakMap.prototype.has(key)
      // 23.4.3.4 WeakSet.prototype.has(value)
      has: function has(key){
        if(!isObject(key))return false;
        if(isFrozen(key))return leakStore(this).has(key);
        return _has(key, WEAK) && _has(key[WEAK], this[ID]);
      }
    });
    return C;
  },
  def: function(that, key, value){
    if(isFrozen(assert.obj(key))){
      leakStore(that).set(key, value);
    } else {
      _has(key, WEAK) || hide(key, WEAK, {});
      key[WEAK][that[ID]] = value;
    } return that;
  },
  leakStore: leakStore,
  WEAK: WEAK,
  ID: ID
};
},{"./$":245,"./$.array-methods":227,"./$.assert":228,"./$.for-of":238,"./$.uid":254}],234:[function(require,module,exports){
'use strict';
var $     = require('./$')
  , $def  = require('./$.def')
  , BUGGY = require('./$.iter').BUGGY
  , forOf = require('./$.for-of')
  , species = require('./$.species')
  , assertInstance = require('./$.assert').inst;

module.exports = function(NAME, methods, common, IS_MAP, IS_WEAK){
  var Base  = $.g[NAME]
    , C     = Base
    , ADDER = IS_MAP ? 'set' : 'add'
    , proto = C && C.prototype
    , O     = {};
  function fixMethod(KEY, CHAIN){
    var method = proto[KEY];
    if($.FW)proto[KEY] = function(a, b){
      var result = method.call(this, a === 0 ? 0 : a, b);
      return CHAIN ? this : result;
    };
  }
  if(!$.isFunction(C) || !(IS_WEAK || !BUGGY && proto.forEach && proto.entries)){
    // create collection constructor
    C = common.getConstructor(NAME, IS_MAP, ADDER);
    $.mix(C.prototype, methods);
  } else {
    var inst  = new C
      , chain = inst[ADDER](IS_WEAK ? {} : -0, 1)
      , buggyZero;
    // wrap for init collections from iterable
    if(!require('./$.iter-detect')(function(iter){ new C(iter); })){ // eslint-disable-line no-new
      C = function(){
        assertInstance(this, C, NAME);
        var that     = new Base
          , iterable = arguments[0];
        if(iterable != undefined)forOf(iterable, IS_MAP, that[ADDER], that);
        return that;
      };
      C.prototype = proto;
      if($.FW)proto.constructor = C;
    }
    IS_WEAK || inst.forEach(function(val, key){
      buggyZero = 1 / key === -Infinity;
    });
    // fix converting -0 key to +0
    if(buggyZero){
      fixMethod('delete');
      fixMethod('has');
      IS_MAP && fixMethod('get');
    }
    // + fix .add & .set for chaining
    if(buggyZero || chain !== inst)fixMethod(ADDER, true);
  }

  require('./$.cof').set(C, NAME);

  O[NAME] = C;
  $def($def.G + $def.W + $def.F * (C != Base), O);
  species(C);
  species($.core[NAME]); // for wrapper

  if(!IS_WEAK)common.setIter(C, NAME, IS_MAP);

  return C;
};
},{"./$":245,"./$.assert":228,"./$.cof":230,"./$.def":236,"./$.for-of":238,"./$.iter":244,"./$.iter-detect":243,"./$.species":251}],235:[function(require,module,exports){
// Optional / simple context binding
var assertFunction = require('./$.assert').fn;
module.exports = function(fn, that, length){
  assertFunction(fn);
  if(~length && that === undefined)return fn;
  switch(length){
    case 1: return function(a){
      return fn.call(that, a);
    };
    case 2: return function(a, b){
      return fn.call(that, a, b);
    };
    case 3: return function(a, b, c){
      return fn.call(that, a, b, c);
    };
  } return function(/* ...args */){
      return fn.apply(that, arguments);
    };
};
},{"./$.assert":228}],236:[function(require,module,exports){
var $          = require('./$')
  , global     = $.g
  , core       = $.core
  , isFunction = $.isFunction;
function ctx(fn, that){
  return function(){
    return fn.apply(that, arguments);
  };
}
global.core = core;
// type bitmap
$def.F = 1;  // forced
$def.G = 2;  // global
$def.S = 4;  // static
$def.P = 8;  // proto
$def.B = 16; // bind
$def.W = 32; // wrap
function $def(type, name, source){
  var key, own, out, exp
    , isGlobal = type & $def.G
    , target   = isGlobal ? global : type & $def.S
        ? global[name] : (global[name] || {}).prototype
    , exports  = isGlobal ? core : core[name] || (core[name] = {});
  if(isGlobal)source = name;
  for(key in source){
    // contains in native
    own = !(type & $def.F) && target && key in target;
    // export native or passed
    out = (own ? target : source)[key];
    // bind timers to global for call from export context
    if(type & $def.B && own)exp = ctx(out, global);
    else exp = type & $def.P && isFunction(out) ? ctx(Function.call, out) : out;
    // extend global
    if(target && !own){
      if(isGlobal)target[key] = out;
      else delete target[key] && $.hide(target, key, out);
    }
    // export
    if(exports[key] != out)$.hide(exports, key, exp);
  }
}
module.exports = $def;
},{"./$":245}],237:[function(require,module,exports){
var $ = require('./$');
module.exports = function(it){
  var keys       = $.getKeys(it)
    , getDesc    = $.getDesc
    , getSymbols = $.getSymbols;
  if(getSymbols)$.each.call(getSymbols(it), function(key){
    if(getDesc(it, key).enumerable)keys.push(key);
  });
  return keys;
};
},{"./$":245}],238:[function(require,module,exports){
var ctx  = require('./$.ctx')
  , get  = require('./$.iter').get
  , call = require('./$.iter-call');
module.exports = function(iterable, entries, fn, that){
  var iterator = get(iterable)
    , f        = ctx(fn, that, entries ? 2 : 1)
    , step;
  while(!(step = iterator.next()).done){
    if(call(iterator, f, step.value, entries) === false){
      return call.close(iterator);
    }
  }
};
},{"./$.ctx":235,"./$.iter":244,"./$.iter-call":241}],239:[function(require,module,exports){
module.exports = function($){
  $.FW   = true;
  $.path = $.g;
  return $;
};
},{}],240:[function(require,module,exports){
// Fast apply
// http://jsperf.lnkit.com/fast-apply/5
module.exports = function(fn, args, that){
  var un = that === undefined;
  switch(args.length){
    case 0: return un ? fn()
                      : fn.call(that);
    case 1: return un ? fn(args[0])
                      : fn.call(that, args[0]);
    case 2: return un ? fn(args[0], args[1])
                      : fn.call(that, args[0], args[1]);
    case 3: return un ? fn(args[0], args[1], args[2])
                      : fn.call(that, args[0], args[1], args[2]);
    case 4: return un ? fn(args[0], args[1], args[2], args[3])
                      : fn.call(that, args[0], args[1], args[2], args[3]);
    case 5: return un ? fn(args[0], args[1], args[2], args[3], args[4])
                      : fn.call(that, args[0], args[1], args[2], args[3], args[4]);
  } return              fn.apply(that, args);
};
},{}],241:[function(require,module,exports){
var assertObject = require('./$.assert').obj;
function close(iterator){
  var ret = iterator['return'];
  if(ret !== undefined)assertObject(ret.call(iterator));
}
function call(iterator, fn, value, entries){
  try {
    return entries ? fn(assertObject(value)[0], value[1]) : fn(value);
  } catch(e){
    close(iterator);
    throw e;
  }
}
call.close = close;
module.exports = call;
},{"./$.assert":228}],242:[function(require,module,exports){
var $def            = require('./$.def')
  , $               = require('./$')
  , cof             = require('./$.cof')
  , $iter           = require('./$.iter')
  , SYMBOL_ITERATOR = require('./$.wks')('iterator')
  , FF_ITERATOR     = '@@iterator'
  , VALUES          = 'values'
  , Iterators       = $iter.Iterators;
module.exports = function(Base, NAME, Constructor, next, DEFAULT, IS_SET, FORCE){
  $iter.create(Constructor, NAME, next);
  function createMethod(kind){
    return function(){
      return new Constructor(this, kind);
    };
  }
  var TAG      = NAME + ' Iterator'
    , proto    = Base.prototype
    , _native  = proto[SYMBOL_ITERATOR] || proto[FF_ITERATOR] || DEFAULT && proto[DEFAULT]
    , _default = _native || createMethod(DEFAULT)
    , methods, key;
  // Fix native
  if(_native){
    var IteratorPrototype = $.getProto(_default.call(new Base));
    // Set @@toStringTag to native iterators
    cof.set(IteratorPrototype, TAG, true);
    // FF fix
    if($.FW && $.has(proto, FF_ITERATOR))$iter.set(IteratorPrototype, $.that);
  }
  // Define iterator
  if($.FW)$iter.set(proto, _default);
  // Plug for library
  Iterators[NAME] = _default;
  Iterators[TAG]  = $.that;
  if(DEFAULT){
    methods = {
      keys:    IS_SET            ? _default : createMethod('keys'),
      values:  DEFAULT == VALUES ? _default : createMethod(VALUES),
      entries: DEFAULT != VALUES ? _default : createMethod('entries')
    };
    if(FORCE)for(key in methods){
      if(!(key in proto))$.hide(proto, key, methods[key]);
    } else $def($def.P + $def.F * $iter.BUGGY, NAME, methods);
  }
};
},{"./$":245,"./$.cof":230,"./$.def":236,"./$.iter":244,"./$.wks":256}],243:[function(require,module,exports){
var SYMBOL_ITERATOR = require('./$.wks')('iterator')
  , SAFE_CLOSING    = false;
try {
  var riter = [7][SYMBOL_ITERATOR]();
  riter['return'] = function(){ SAFE_CLOSING = true; };
  Array.from(riter, function(){ throw 2; });
} catch(e){ /* empty */ }
module.exports = function(exec){
  if(!SAFE_CLOSING)return false;
  var safe = false;
  try {
    var arr  = [7]
      , iter = arr[SYMBOL_ITERATOR]();
    iter.next = function(){ safe = true; };
    arr[SYMBOL_ITERATOR] = function(){ return iter; };
    exec(arr);
  } catch(e){ /* empty */ }
  return safe;
};
},{"./$.wks":256}],244:[function(require,module,exports){
'use strict';
var $                 = require('./$')
  , cof               = require('./$.cof')
  , assertObject      = require('./$.assert').obj
  , SYMBOL_ITERATOR   = require('./$.wks')('iterator')
  , FF_ITERATOR       = '@@iterator'
  , Iterators         = {}
  , IteratorPrototype = {};
// 25.1.2.1.1 %IteratorPrototype%[@@iterator]()
setIterator(IteratorPrototype, $.that);
function setIterator(O, value){
  $.hide(O, SYMBOL_ITERATOR, value);
  // Add iterator for FF iterator protocol
  if(FF_ITERATOR in [])$.hide(O, FF_ITERATOR, value);
}

module.exports = {
  // Safari has buggy iterators w/o `next`
  BUGGY: 'keys' in [] && !('next' in [].keys()),
  Iterators: Iterators,
  step: function(done, value){
    return {value: value, done: !!done};
  },
  is: function(it){
    var O      = Object(it)
      , Symbol = $.g.Symbol
      , SYM    = Symbol && Symbol.iterator || FF_ITERATOR;
    return SYM in O || SYMBOL_ITERATOR in O || $.has(Iterators, cof.classof(O));
  },
  get: function(it){
    var Symbol  = $.g.Symbol
      , ext     = it[Symbol && Symbol.iterator || FF_ITERATOR]
      , getIter = ext || it[SYMBOL_ITERATOR] || Iterators[cof.classof(it)];
    return assertObject(getIter.call(it));
  },
  set: setIterator,
  create: function(Constructor, NAME, next, proto){
    Constructor.prototype = $.create(proto || IteratorPrototype, {next: $.desc(1, next)});
    cof.set(Constructor, NAME + ' Iterator');
  }
};
},{"./$":245,"./$.assert":228,"./$.cof":230,"./$.wks":256}],245:[function(require,module,exports){
'use strict';
var global = typeof self != 'undefined' ? self : Function('return this')()
  , core   = {}
  , defineProperty = Object.defineProperty
  , hasOwnProperty = {}.hasOwnProperty
  , ceil  = Math.ceil
  , floor = Math.floor
  , max   = Math.max
  , min   = Math.min;
// The engine works fine with descriptors? Thank's IE8 for his funny defineProperty.
var DESC = !!function(){
  try {
    return defineProperty({}, 'a', {get: function(){ return 2; }}).a == 2;
  } catch(e){ /* empty */ }
}();
var hide = createDefiner(1);
// 7.1.4 ToInteger
function toInteger(it){
  return isNaN(it = +it) ? 0 : (it > 0 ? floor : ceil)(it);
}
function desc(bitmap, value){
  return {
    enumerable  : !(bitmap & 1),
    configurable: !(bitmap & 2),
    writable    : !(bitmap & 4),
    value       : value
  };
}
function simpleSet(object, key, value){
  object[key] = value;
  return object;
}
function createDefiner(bitmap){
  return DESC ? function(object, key, value){
    return $.setDesc(object, key, desc(bitmap, value));
  } : simpleSet;
}

function isObject(it){
  return it !== null && (typeof it == 'object' || typeof it == 'function');
}
function isFunction(it){
  return typeof it == 'function';
}
function assertDefined(it){
  if(it == undefined)throw TypeError("Can't call method on  " + it);
  return it;
}

var $ = module.exports = require('./$.fw')({
  g: global,
  core: core,
  html: global.document && document.documentElement,
  // http://jsperf.com/core-js-isobject
  isObject:   isObject,
  isFunction: isFunction,
  it: function(it){
    return it;
  },
  that: function(){
    return this;
  },
  // 7.1.4 ToInteger
  toInteger: toInteger,
  // 7.1.15 ToLength
  toLength: function(it){
    return it > 0 ? min(toInteger(it), 0x1fffffffffffff) : 0; // pow(2, 53) - 1 == 9007199254740991
  },
  toIndex: function(index, length){
    index = toInteger(index);
    return index < 0 ? max(index + length, 0) : min(index, length);
  },
  has: function(it, key){
    return hasOwnProperty.call(it, key);
  },
  create:     Object.create,
  getProto:   Object.getPrototypeOf,
  DESC:       DESC,
  desc:       desc,
  getDesc:    Object.getOwnPropertyDescriptor,
  setDesc:    defineProperty,
  setDescs:   Object.defineProperties,
  getKeys:    Object.keys,
  getNames:   Object.getOwnPropertyNames,
  getSymbols: Object.getOwnPropertySymbols,
  assertDefined: assertDefined,
  // Dummy, fix for not array-like ES3 string in es5 module
  ES5Object: Object,
  toObject: function(it){
    return $.ES5Object(assertDefined(it));
  },
  hide: hide,
  def: createDefiner(0),
  set: global.Symbol ? simpleSet : hide,
  mix: function(target, src){
    for(var key in src)hide(target, key, src[key]);
    return target;
  },
  each: [].forEach
});
/* eslint-disable no-undef */
if(typeof __e != 'undefined')__e = core;
if(typeof __g != 'undefined')__g = global;
},{"./$.fw":239}],246:[function(require,module,exports){
var $ = require('./$');
module.exports = function(object, el){
  var O      = $.toObject(object)
    , keys   = $.getKeys(O)
    , length = keys.length
    , index  = 0
    , key;
  while(length > index)if(O[key = keys[index++]] === el)return key;
};
},{"./$":245}],247:[function(require,module,exports){
var $            = require('./$')
  , assertObject = require('./$.assert').obj;
module.exports = function ownKeys(it){
  assertObject(it);
  var keys       = $.getNames(it)
    , getSymbols = $.getSymbols;
  return getSymbols ? keys.concat(getSymbols(it)) : keys;
};
},{"./$":245,"./$.assert":228}],248:[function(require,module,exports){
'use strict';
var $      = require('./$')
  , invoke = require('./$.invoke')
  , assertFunction = require('./$.assert').fn;
module.exports = function(/* ...pargs */){
  var fn     = assertFunction(this)
    , length = arguments.length
    , pargs  = Array(length)
    , i      = 0
    , _      = $.path._
    , holder = false;
  while(length > i)if((pargs[i] = arguments[i++]) === _)holder = true;
  return function(/* ...args */){
    var that    = this
      , _length = arguments.length
      , j = 0, k = 0, args;
    if(!holder && !_length)return invoke(fn, pargs, that);
    args = pargs.slice();
    if(holder)for(;length > j; j++)if(args[j] === _)args[j] = arguments[k++];
    while(_length > k)args.push(arguments[k++]);
    return invoke(fn, args, that);
  };
};
},{"./$":245,"./$.assert":228,"./$.invoke":240}],249:[function(require,module,exports){
'use strict';
module.exports = function(regExp, replace, isStatic){
  var replacer = replace === Object(replace) ? function(part){
    return replace[part];
  } : replace;
  return function(it){
    return String(isStatic ? it : this).replace(regExp, replacer);
  };
};
},{}],250:[function(require,module,exports){
// Works with __proto__ only. Old v8 can't work with null proto objects.
/* eslint-disable no-proto */
var $      = require('./$')
  , assert = require('./$.assert');
function check(O, proto){
  assert.obj(O);
  assert(proto === null || $.isObject(proto), proto, ": can't set as prototype!");
}
module.exports = {
  set: Object.setPrototypeOf || ('__proto__' in {} // eslint-disable-line
    ? function(buggy, set){
        try {
          set = require('./$.ctx')(Function.call, $.getDesc(Object.prototype, '__proto__').set, 2);
          set({}, []);
        } catch(e){ buggy = true; }
        return function setPrototypeOf(O, proto){
          check(O, proto);
          if(buggy)O.__proto__ = proto;
          else set(O, proto);
          return O;
        };
      }()
    : undefined),
  check: check
};
},{"./$":245,"./$.assert":228,"./$.ctx":235}],251:[function(require,module,exports){
var $       = require('./$')
  , SPECIES = require('./$.wks')('species');
module.exports = function(C){
  if($.DESC && !(SPECIES in C))$.setDesc(C, SPECIES, {
    configurable: true,
    get: $.that
  });
};
},{"./$":245,"./$.wks":256}],252:[function(require,module,exports){
'use strict';
// true  -> String#at
// false -> String#codePointAt
var $ = require('./$');
module.exports = function(TO_STRING){
  return function(pos){
    var s = String($.assertDefined(this))
      , i = $.toInteger(pos)
      , l = s.length
      , a, b;
    if(i < 0 || i >= l)return TO_STRING ? '' : undefined;
    a = s.charCodeAt(i);
    return a < 0xd800 || a > 0xdbff || i + 1 === l
      || (b = s.charCodeAt(i + 1)) < 0xdc00 || b > 0xdfff
        ? TO_STRING ? s.charAt(i) : a
        : TO_STRING ? s.slice(i, i + 2) : (a - 0xd800 << 10) + (b - 0xdc00) + 0x10000;
  };
};
},{"./$":245}],253:[function(require,module,exports){
'use strict';
var $      = require('./$')
  , ctx    = require('./$.ctx')
  , cof    = require('./$.cof')
  , invoke = require('./$.invoke')
  , global             = $.g
  , isFunction         = $.isFunction
  , html               = $.html
  , document           = global.document
  , process            = global.process
  , setTask            = global.setImmediate
  , clearTask          = global.clearImmediate
  , postMessage        = global.postMessage
  , addEventListener   = global.addEventListener
  , MessageChannel     = global.MessageChannel
  , counter            = 0
  , queue              = {}
  , ONREADYSTATECHANGE = 'onreadystatechange'
  , defer, channel, port;
function run(){
  var id = +this;
  if($.has(queue, id)){
    var fn = queue[id];
    delete queue[id];
    fn();
  }
}
function listner(event){
  run.call(event.data);
}
// Node.js 0.9+ & IE10+ has setImmediate, otherwise:
if(!isFunction(setTask) || !isFunction(clearTask)){
  setTask = function(fn){
    var args = [], i = 1;
    while(arguments.length > i)args.push(arguments[i++]);
    queue[++counter] = function(){
      invoke(isFunction(fn) ? fn : Function(fn), args);
    };
    defer(counter);
    return counter;
  };
  clearTask = function(id){
    delete queue[id];
  };
  // Node.js 0.8-
  if(cof(process) == 'process'){
    defer = function(id){
      process.nextTick(ctx(run, id, 1));
    };
  // Modern browsers, skip implementation for WebWorkers
  // IE8 has postMessage, but it's sync & typeof its postMessage is object
  } else if(addEventListener && isFunction(postMessage) && !global.importScripts){
    defer = function(id){
      postMessage(id, '*');
    };
    addEventListener('message', listner, false);
  // WebWorkers
  } else if(isFunction(MessageChannel)){
    channel = new MessageChannel;
    port    = channel.port2;
    channel.port1.onmessage = listner;
    defer = ctx(port.postMessage, port, 1);
  // IE8-
  } else if(document && ONREADYSTATECHANGE in document.createElement('script')){
    defer = function(id){
      html.appendChild(document.createElement('script'))[ONREADYSTATECHANGE] = function(){
        html.removeChild(this);
        run.call(id);
      };
    };
  // Rest old browsers
  } else {
    defer = function(id){
      setTimeout(ctx(run, id, 1), 0);
    };
  }
}
module.exports = {
  set:   setTask,
  clear: clearTask
};
},{"./$":245,"./$.cof":230,"./$.ctx":235,"./$.invoke":240}],254:[function(require,module,exports){
var sid = 0;
function uid(key){
  return 'Symbol(' + key + ')_' + (++sid + Math.random()).toString(36);
}
uid.safe = require('./$').g.Symbol || uid;
module.exports = uid;
},{"./$":245}],255:[function(require,module,exports){
// 22.1.3.31 Array.prototype[@@unscopables]
var $           = require('./$')
  , UNSCOPABLES = require('./$.wks')('unscopables');
if($.FW && !(UNSCOPABLES in []))$.hide(Array.prototype, UNSCOPABLES, {});
module.exports = function(key){
  if($.FW)[][UNSCOPABLES][key] = true;
};
},{"./$":245,"./$.wks":256}],256:[function(require,module,exports){
var global = require('./$').g
  , store  = {};
module.exports = function(name){
  return store[name] || (store[name] =
    global.Symbol && global.Symbol[name] || require('./$.uid').safe('Symbol.' + name));
};
},{"./$":245,"./$.uid":254}],257:[function(require,module,exports){
var $                = require('./$')
  , cof              = require('./$.cof')
  , $def             = require('./$.def')
  , invoke           = require('./$.invoke')
  , arrayMethod      = require('./$.array-methods')
  , IE_PROTO         = require('./$.uid').safe('__proto__')
  , assert           = require('./$.assert')
  , assertObject     = assert.obj
  , ObjectProto      = Object.prototype
  , A                = []
  , slice            = A.slice
  , indexOf          = A.indexOf
  , classof          = cof.classof
  , has              = $.has
  , defineProperty   = $.setDesc
  , getOwnDescriptor = $.getDesc
  , defineProperties = $.setDescs
  , isFunction       = $.isFunction
  , toObject         = $.toObject
  , toLength         = $.toLength
  , IE8_DOM_DEFINE   = false;

if(!$.DESC){
  try {
    IE8_DOM_DEFINE = defineProperty(document.createElement('div'), 'x',
      {get: function(){ return 8; }}
    ).x == 8;
  } catch(e){ /* empty */ }
  $.setDesc = function(O, P, Attributes){
    if(IE8_DOM_DEFINE)try {
      return defineProperty(O, P, Attributes);
    } catch(e){ /* empty */ }
    if('get' in Attributes || 'set' in Attributes)throw TypeError('Accessors not supported!');
    if('value' in Attributes)assertObject(O)[P] = Attributes.value;
    return O;
  };
  $.getDesc = function(O, P){
    if(IE8_DOM_DEFINE)try {
      return getOwnDescriptor(O, P);
    } catch(e){ /* empty */ }
    if(has(O, P))return $.desc(!ObjectProto.propertyIsEnumerable.call(O, P), O[P]);
  };
  $.setDescs = defineProperties = function(O, Properties){
    assertObject(O);
    var keys   = $.getKeys(Properties)
      , length = keys.length
      , i = 0
      , P;
    while(length > i)$.setDesc(O, P = keys[i++], Properties[P]);
    return O;
  };
}
$def($def.S + $def.F * !$.DESC, 'Object', {
  // 19.1.2.6 / 15.2.3.3 Object.getOwnPropertyDescriptor(O, P)
  getOwnPropertyDescriptor: $.getDesc,
  // 19.1.2.4 / 15.2.3.6 Object.defineProperty(O, P, Attributes)
  defineProperty: $.setDesc,
  // 19.1.2.3 / 15.2.3.7 Object.defineProperties(O, Properties)
  defineProperties: defineProperties
});

  // IE 8- don't enum bug keys
var keys1 = ('constructor,hasOwnProperty,isPrototypeOf,propertyIsEnumerable,' +
            'toLocaleString,toString,valueOf').split(',')
  // Additional keys for getOwnPropertyNames
  , keys2 = keys1.concat('length', 'prototype')
  , keysLen1 = keys1.length;

// Create object with `null` prototype: use iframe Object with cleared prototype
var createDict = function(){
  // Thrash, waste and sodomy: IE GC bug
  var iframe = document.createElement('iframe')
    , i      = keysLen1
    , gt     = '>'
    , iframeDocument;
  iframe.style.display = 'none';
  $.html.appendChild(iframe);
  iframe.src = 'javascript:'; // eslint-disable-line no-script-url
  // createDict = iframe.contentWindow.Object;
  // html.removeChild(iframe);
  iframeDocument = iframe.contentWindow.document;
  iframeDocument.open();
  iframeDocument.write('<script>document.F=Object</script' + gt);
  iframeDocument.close();
  createDict = iframeDocument.F;
  while(i--)delete createDict.prototype[keys1[i]];
  return createDict();
};
function createGetKeys(names, length){
  return function(object){
    var O      = toObject(object)
      , i      = 0
      , result = []
      , key;
    for(key in O)if(key != IE_PROTO)has(O, key) && result.push(key);
    // Don't enum bug & hidden keys
    while(length > i)if(has(O, key = names[i++])){
      ~indexOf.call(result, key) || result.push(key);
    }
    return result;
  };
}
function isPrimitive(it){ return !$.isObject(it); }
function Empty(){}
$def($def.S, 'Object', {
  // 19.1.2.9 / 15.2.3.2 Object.getPrototypeOf(O)
  getPrototypeOf: $.getProto = $.getProto || function(O){
    O = Object(assert.def(O));
    if(has(O, IE_PROTO))return O[IE_PROTO];
    if(isFunction(O.constructor) && O instanceof O.constructor){
      return O.constructor.prototype;
    } return O instanceof Object ? ObjectProto : null;
  },
  // 19.1.2.7 / 15.2.3.4 Object.getOwnPropertyNames(O)
  getOwnPropertyNames: $.getNames = $.getNames || createGetKeys(keys2, keys2.length, true),
  // 19.1.2.2 / 15.2.3.5 Object.create(O [, Properties])
  create: $.create = $.create || function(O, /*?*/Properties){
    var result;
    if(O !== null){
      Empty.prototype = assertObject(O);
      result = new Empty();
      Empty.prototype = null;
      // add "__proto__" for Object.getPrototypeOf shim
      result[IE_PROTO] = O;
    } else result = createDict();
    return Properties === undefined ? result : defineProperties(result, Properties);
  },
  // 19.1.2.14 / 15.2.3.14 Object.keys(O)
  keys: $.getKeys = $.getKeys || createGetKeys(keys1, keysLen1, false),
  // 19.1.2.17 / 15.2.3.8 Object.seal(O)
  seal: $.it, // <- cap
  // 19.1.2.5 / 15.2.3.9 Object.freeze(O)
  freeze: $.it, // <- cap
  // 19.1.2.15 / 15.2.3.10 Object.preventExtensions(O)
  preventExtensions: $.it, // <- cap
  // 19.1.2.13 / 15.2.3.11 Object.isSealed(O)
  isSealed: isPrimitive, // <- cap
  // 19.1.2.12 / 15.2.3.12 Object.isFrozen(O)
  isFrozen: isPrimitive, // <- cap
  // 19.1.2.11 / 15.2.3.13 Object.isExtensible(O)
  isExtensible: $.isObject // <- cap
});

// 19.2.3.2 / 15.3.4.5 Function.prototype.bind(thisArg, args...)
$def($def.P, 'Function', {
  bind: function(that /*, args... */){
    var fn       = assert.fn(this)
      , partArgs = slice.call(arguments, 1);
    function bound(/* args... */){
      var args = partArgs.concat(slice.call(arguments));
      return invoke(fn, args, this instanceof bound ? $.create(fn.prototype) : that);
    }
    if(fn.prototype)bound.prototype = fn.prototype;
    return bound;
  }
});

// Fix for not array-like ES3 string
function arrayMethodFix(fn){
  return function(){
    return fn.apply($.ES5Object(this), arguments);
  };
}
if(!(0 in Object('z') && 'z'[0] == 'z')){
  $.ES5Object = function(it){
    return cof(it) == 'String' ? it.split('') : Object(it);
  };
}
$def($def.P + $def.F * ($.ES5Object != Object), 'Array', {
  slice: arrayMethodFix(slice),
  join: arrayMethodFix(A.join)
});

// 22.1.2.2 / 15.4.3.2 Array.isArray(arg)
$def($def.S, 'Array', {
  isArray: function(arg){
    return cof(arg) == 'Array';
  }
});
function createArrayReduce(isRight){
  return function(callbackfn, memo){
    assert.fn(callbackfn);
    var O      = toObject(this)
      , length = toLength(O.length)
      , index  = isRight ? length - 1 : 0
      , i      = isRight ? -1 : 1;
    if(arguments.length < 2)for(;;){
      if(index in O){
        memo = O[index];
        index += i;
        break;
      }
      index += i;
      assert(isRight ? index >= 0 : length > index, 'Reduce of empty array with no initial value');
    }
    for(;isRight ? index >= 0 : length > index; index += i)if(index in O){
      memo = callbackfn(memo, O[index], index, this);
    }
    return memo;
  };
}
$def($def.P, 'Array', {
  // 22.1.3.10 / 15.4.4.18 Array.prototype.forEach(callbackfn [, thisArg])
  forEach: $.each = $.each || arrayMethod(0),
  // 22.1.3.15 / 15.4.4.19 Array.prototype.map(callbackfn [, thisArg])
  map: arrayMethod(1),
  // 22.1.3.7 / 15.4.4.20 Array.prototype.filter(callbackfn [, thisArg])
  filter: arrayMethod(2),
  // 22.1.3.23 / 15.4.4.17 Array.prototype.some(callbackfn [, thisArg])
  some: arrayMethod(3),
  // 22.1.3.5 / 15.4.4.16 Array.prototype.every(callbackfn [, thisArg])
  every: arrayMethod(4),
  // 22.1.3.18 / 15.4.4.21 Array.prototype.reduce(callbackfn [, initialValue])
  reduce: createArrayReduce(false),
  // 22.1.3.19 / 15.4.4.22 Array.prototype.reduceRight(callbackfn [, initialValue])
  reduceRight: createArrayReduce(true),
  // 22.1.3.11 / 15.4.4.14 Array.prototype.indexOf(searchElement [, fromIndex])
  indexOf: indexOf = indexOf || require('./$.array-includes')(false),
  // 22.1.3.14 / 15.4.4.15 Array.prototype.lastIndexOf(searchElement [, fromIndex])
  lastIndexOf: function(el, fromIndex /* = @[*-1] */){
    var O      = toObject(this)
      , length = toLength(O.length)
      , index  = length - 1;
    if(arguments.length > 1)index = Math.min(index, $.toInteger(fromIndex));
    if(index < 0)index = toLength(length + index);
    for(;index >= 0; index--)if(index in O)if(O[index] === el)return index;
    return -1;
  }
});

// 21.1.3.25 / 15.5.4.20 String.prototype.trim()
$def($def.P, 'String', {trim: require('./$.replacer')(/^\s*([\s\S]*\S)?\s*$/, '$1')});

// 20.3.3.1 / 15.9.4.4 Date.now()
$def($def.S, 'Date', {now: function(){
  return +new Date;
}});

function lz(num){
  return num > 9 ? num : '0' + num;
}

// 20.3.4.36 / 15.9.5.43 Date.prototype.toISOString()
// PhantomJS and old webkit had a broken Date implementation.
var date       = new Date(-5e13 - 1)
  , brokenDate = !(date.toISOString && date.toISOString() == '0385-07-25T07:06:39.999Z');
$def($def.P + $def.F * brokenDate, 'Date', {toISOString: function(){
  if(!isFinite(this))throw RangeError('Invalid time value');
  var d = this
    , y = d.getUTCFullYear()
    , m = d.getUTCMilliseconds()
    , s = y < 0 ? '-' : y > 9999 ? '+' : '';
  return s + ('00000' + Math.abs(y)).slice(s ? -6 : -4) +
    '-' + lz(d.getUTCMonth() + 1) + '-' + lz(d.getUTCDate()) +
    'T' + lz(d.getUTCHours()) + ':' + lz(d.getUTCMinutes()) +
    ':' + lz(d.getUTCSeconds()) + '.' + (m > 99 ? m : '0' + lz(m)) + 'Z';
}});

if(classof(function(){ return arguments; }()) == 'Object')cof.classof = function(it){
  var tag = classof(it);
  return tag == 'Object' && isFunction(it.callee) ? 'Arguments' : tag;
};
},{"./$":245,"./$.array-includes":226,"./$.array-methods":227,"./$.assert":228,"./$.cof":230,"./$.def":236,"./$.invoke":240,"./$.replacer":249,"./$.uid":254}],258:[function(require,module,exports){
'use strict';
var $       = require('./$')
  , $def    = require('./$.def')
  , toIndex = $.toIndex;
$def($def.P, 'Array', {
  // 22.1.3.3 Array.prototype.copyWithin(target, start, end = this.length)
  copyWithin: function copyWithin(target/* = 0 */, start /* = 0, end = @length */){
    var O     = Object($.assertDefined(this))
      , len   = $.toLength(O.length)
      , to    = toIndex(target, len)
      , from  = toIndex(start, len)
      , end   = arguments[2]
      , fin   = end === undefined ? len : toIndex(end, len)
      , count = Math.min(fin - from, len - to)
      , inc   = 1;
    if(from < to && to < from + count){
      inc  = -1;
      from = from + count - 1;
      to   = to   + count - 1;
    }
    while(count-- > 0){
      if(from in O)O[to] = O[from];
      else delete O[to];
      to   += inc;
      from += inc;
    } return O;
  }
});
require('./$.unscope')('copyWithin');
},{"./$":245,"./$.def":236,"./$.unscope":255}],259:[function(require,module,exports){
'use strict';
var $       = require('./$')
  , $def    = require('./$.def')
  , toIndex = $.toIndex;
$def($def.P, 'Array', {
  // 22.1.3.6 Array.prototype.fill(value, start = 0, end = this.length)
  fill: function fill(value /*, start = 0, end = @length */){
    var O      = Object($.assertDefined(this))
      , length = $.toLength(O.length)
      , index  = toIndex(arguments[1], length)
      , end    = arguments[2]
      , endPos = end === undefined ? length : toIndex(end, length);
    while(endPos > index)O[index++] = value;
    return O;
  }
});
require('./$.unscope')('fill');
},{"./$":245,"./$.def":236,"./$.unscope":255}],260:[function(require,module,exports){
var $def = require('./$.def');
$def($def.P, 'Array', {
  // 22.1.3.9 Array.prototype.findIndex(predicate, thisArg = undefined)
  findIndex: require('./$.array-methods')(6)
});
require('./$.unscope')('findIndex');
},{"./$.array-methods":227,"./$.def":236,"./$.unscope":255}],261:[function(require,module,exports){
var $def = require('./$.def');
$def($def.P, 'Array', {
  // 22.1.3.8 Array.prototype.find(predicate, thisArg = undefined)
  find: require('./$.array-methods')(5)
});
require('./$.unscope')('find');
},{"./$.array-methods":227,"./$.def":236,"./$.unscope":255}],262:[function(require,module,exports){
var $     = require('./$')
  , ctx   = require('./$.ctx')
  , $def  = require('./$.def')
  , $iter = require('./$.iter')
  , call  = require('./$.iter-call');
$def($def.S + $def.F * !require('./$.iter-detect')(function(iter){ Array.from(iter); }), 'Array', {
  // 22.1.2.1 Array.from(arrayLike, mapfn = undefined, thisArg = undefined)
  from: function from(arrayLike/*, mapfn = undefined, thisArg = undefined*/){
    var O       = Object($.assertDefined(arrayLike))
      , mapfn   = arguments[1]
      , mapping = mapfn !== undefined
      , f       = mapping ? ctx(mapfn, arguments[2], 2) : undefined
      , index   = 0
      , length, result, step, iterator;
    if($iter.is(O)){
      iterator = $iter.get(O);
      // strange IE quirks mode bug -> use typeof instead of isFunction
      result   = new (typeof this == 'function' ? this : Array);
      for(; !(step = iterator.next()).done; index++){
        result[index] = mapping ? call(iterator, f, [step.value, index], true) : step.value;
      }
    } else {
      // strange IE quirks mode bug -> use typeof instead of isFunction
      result = new (typeof this == 'function' ? this : Array)(length = $.toLength(O.length));
      for(; length > index; index++){
        result[index] = mapping ? f(O[index], index) : O[index];
      }
    }
    result.length = index;
    return result;
  }
});
},{"./$":245,"./$.ctx":235,"./$.def":236,"./$.iter":244,"./$.iter-call":241,"./$.iter-detect":243}],263:[function(require,module,exports){
var $          = require('./$')
  , setUnscope = require('./$.unscope')
  , ITER       = require('./$.uid').safe('iter')
  , $iter      = require('./$.iter')
  , step       = $iter.step
  , Iterators  = $iter.Iterators;

// 22.1.3.4 Array.prototype.entries()
// 22.1.3.13 Array.prototype.keys()
// 22.1.3.29 Array.prototype.values()
// 22.1.3.30 Array.prototype[@@iterator]()
require('./$.iter-define')(Array, 'Array', function(iterated, kind){
  $.set(this, ITER, {o: $.toObject(iterated), i: 0, k: kind});
// 22.1.5.2.1 %ArrayIteratorPrototype%.next()
}, function(){
  var iter  = this[ITER]
    , O     = iter.o
    , kind  = iter.k
    , index = iter.i++;
  if(!O || index >= O.length){
    iter.o = undefined;
    return step(1);
  }
  if(kind == 'keys'  )return step(0, index);
  if(kind == 'values')return step(0, O[index]);
  return step(0, [index, O[index]]);
}, 'values');

// argumentsList[@@iterator] is %ArrayProto_values% (9.4.4.6, 9.4.4.7)
Iterators.Arguments = Iterators.Array;

setUnscope('keys');
setUnscope('values');
setUnscope('entries');
},{"./$":245,"./$.iter":244,"./$.iter-define":242,"./$.uid":254,"./$.unscope":255}],264:[function(require,module,exports){
var $def = require('./$.def');
$def($def.S, 'Array', {
  // 22.1.2.3 Array.of( ...items)
  of: function of(/* ...args */){
    var index  = 0
      , length = arguments.length
      // strange IE quirks mode bug -> use typeof instead of isFunction
      , result = new (typeof this == 'function' ? this : Array)(length);
    while(length > index)result[index] = arguments[index++];
    result.length = length;
    return result;
  }
});
},{"./$.def":236}],265:[function(require,module,exports){
require('./$.species')(Array);
},{"./$.species":251}],266:[function(require,module,exports){
'use strict';
var $    = require('./$')
  , NAME = 'name'
  , setDesc = $.setDesc
  , FunctionProto = Function.prototype;
// 19.2.4.2 name
NAME in FunctionProto || $.FW && $.DESC && setDesc(FunctionProto, NAME, {
  configurable: true,
  get: function(){
    var match = String(this).match(/^\s*function ([^ (]*)/)
      , name  = match ? match[1] : '';
    $.has(this, NAME) || setDesc(this, NAME, $.desc(5, name));
    return name;
  },
  set: function(value){
    $.has(this, NAME) || setDesc(this, NAME, $.desc(0, value));
  }
});
},{"./$":245}],267:[function(require,module,exports){
'use strict';
var strong = require('./$.collection-strong');

// 23.1 Map Objects
require('./$.collection')('Map', {
  // 23.1.3.6 Map.prototype.get(key)
  get: function get(key){
    var entry = strong.getEntry(this, key);
    return entry && entry.v;
  },
  // 23.1.3.9 Map.prototype.set(key, value)
  set: function set(key, value){
    return strong.def(this, key === 0 ? 0 : key, value);
  }
}, strong, true);
},{"./$.collection":234,"./$.collection-strong":231}],268:[function(require,module,exports){
var Infinity = 1 / 0
  , $def  = require('./$.def')
  , E     = Math.E
  , pow   = Math.pow
  , abs   = Math.abs
  , exp   = Math.exp
  , log   = Math.log
  , sqrt  = Math.sqrt
  , ceil  = Math.ceil
  , floor = Math.floor
  , EPSILON   = pow(2, -52)
  , EPSILON32 = pow(2, -23)
  , MAX32     = pow(2, 127) * (2 - EPSILON32)
  , MIN32     = pow(2, -126);
function roundTiesToEven(n){
  return n + 1 / EPSILON - 1 / EPSILON;
}

// 20.2.2.28 Math.sign(x)
function sign(x){
  return (x = +x) == 0 || x != x ? x : x < 0 ? -1 : 1;
}
// 20.2.2.5 Math.asinh(x)
function asinh(x){
  return !isFinite(x = +x) || x == 0 ? x : x < 0 ? -asinh(-x) : log(x + sqrt(x * x + 1));
}
// 20.2.2.14 Math.expm1(x)
function expm1(x){
  return (x = +x) == 0 ? x : x > -1e-6 && x < 1e-6 ? x + x * x / 2 : exp(x) - 1;
}

$def($def.S, 'Math', {
  // 20.2.2.3 Math.acosh(x)
  acosh: function acosh(x){
    return (x = +x) < 1 ? NaN : isFinite(x) ? log(x / E + sqrt(x + 1) * sqrt(x - 1) / E) + 1 : x;
  },
  // 20.2.2.5 Math.asinh(x)
  asinh: asinh,
  // 20.2.2.7 Math.atanh(x)
  atanh: function atanh(x){
    return (x = +x) == 0 ? x : log((1 + x) / (1 - x)) / 2;
  },
  // 20.2.2.9 Math.cbrt(x)
  cbrt: function cbrt(x){
    return sign(x = +x) * pow(abs(x), 1 / 3);
  },
  // 20.2.2.11 Math.clz32(x)
  clz32: function clz32(x){
    return (x >>>= 0) ? 31 - floor(log(x + 0.5) * Math.LOG2E) : 32;
  },
  // 20.2.2.12 Math.cosh(x)
  cosh: function cosh(x){
    return (exp(x = +x) + exp(-x)) / 2;
  },
  // 20.2.2.14 Math.expm1(x)
  expm1: expm1,
  // 20.2.2.16 Math.fround(x)
  fround: function fround(x){
    var $abs  = abs(x)
      , $sign = sign(x)
      , a, result;
    if($abs < MIN32)return $sign * roundTiesToEven($abs / MIN32 / EPSILON32) * MIN32 * EPSILON32;
    a = (1 + EPSILON32 / EPSILON) * $abs;
    result = a - (a - $abs);
    if(result > MAX32 || result != result)return $sign * Infinity;
    return $sign * result;
  },
  // 20.2.2.17 Math.hypot([value1[, value2[, … ]]])
  hypot: function hypot(value1, value2){ // eslint-disable-line no-unused-vars
    var sum  = 0
      , len1 = arguments.length
      , len2 = len1
      , args = Array(len1)
      , larg = -Infinity
      , arg;
    while(len1--){
      arg = args[len1] = +arguments[len1];
      if(arg == Infinity || arg == -Infinity)return Infinity;
      if(arg > larg)larg = arg;
    }
    larg = arg || 1;
    while(len2--)sum += pow(args[len2] / larg, 2);
    return larg * sqrt(sum);
  },
  // 20.2.2.18 Math.imul(x, y)
  imul: function imul(x, y){
    var UInt16 = 0xffff
      , xn = +x
      , yn = +y
      , xl = UInt16 & xn
      , yl = UInt16 & yn;
    return 0 | xl * yl + ((UInt16 & xn >>> 16) * yl + xl * (UInt16 & yn >>> 16) << 16 >>> 0);
  },
  // 20.2.2.20 Math.log1p(x)
  log1p: function log1p(x){
    return (x = +x) > -1e-8 && x < 1e-8 ? x - x * x / 2 : log(1 + x);
  },
  // 20.2.2.21 Math.log10(x)
  log10: function log10(x){
    return log(x) / Math.LN10;
  },
  // 20.2.2.22 Math.log2(x)
  log2: function log2(x){
    return log(x) / Math.LN2;
  },
  // 20.2.2.28 Math.sign(x)
  sign: sign,
  // 20.2.2.30 Math.sinh(x)
  sinh: function sinh(x){
    return abs(x = +x) < 1 ? (expm1(x) - expm1(-x)) / 2 : (exp(x - 1) - exp(-x - 1)) * (E / 2);
  },
  // 20.2.2.33 Math.tanh(x)
  tanh: function tanh(x){
    var a = expm1(x = +x)
      , b = expm1(-x);
    return a == Infinity ? 1 : b == Infinity ? -1 : (a - b) / (exp(x) + exp(-x));
  },
  // 20.2.2.34 Math.trunc(x)
  trunc: function trunc(it){
    return (it > 0 ? floor : ceil)(it);
  }
});
},{"./$.def":236}],269:[function(require,module,exports){
'use strict';
var $          = require('./$')
  , isObject   = $.isObject
  , isFunction = $.isFunction
  , NUMBER     = 'Number'
  , Number     = $.g[NUMBER]
  , Base       = Number
  , proto      = Number.prototype;
function toPrimitive(it){
  var fn, val;
  if(isFunction(fn = it.valueOf) && !isObject(val = fn.call(it)))return val;
  if(isFunction(fn = it.toString) && !isObject(val = fn.call(it)))return val;
  throw TypeError("Can't convert object to number");
}
function toNumber(it){
  if(isObject(it))it = toPrimitive(it);
  if(typeof it == 'string' && it.length > 2 && it.charCodeAt(0) == 48){
    var binary = false;
    switch(it.charCodeAt(1)){
      case 66 : case 98  : binary = true;
      case 79 : case 111 : return parseInt(it.slice(2), binary ? 2 : 8);
    }
  } return +it;
}
if($.FW && !(Number('0o1') && Number('0b1'))){
  Number = function Number(it){
    return this instanceof Number ? new Base(toNumber(it)) : toNumber(it);
  };
  $.each.call($.DESC ? $.getNames(Base) : (
      // ES3:
      'MAX_VALUE,MIN_VALUE,NaN,NEGATIVE_INFINITY,POSITIVE_INFINITY,' +
      // ES6 (in case, if modules with ES6 Number statics required before):
      'EPSILON,isFinite,isInteger,isNaN,isSafeInteger,MAX_SAFE_INTEGER,' +
      'MIN_SAFE_INTEGER,parseFloat,parseInt,isInteger'
    ).split(','), function(key){
      if($.has(Base, key) && !$.has(Number, key)){
        $.setDesc(Number, key, $.getDesc(Base, key));
      }
    }
  );
  Number.prototype = proto;
  proto.constructor = Number;
  $.hide($.g, NUMBER, Number);
}
},{"./$":245}],270:[function(require,module,exports){
var $     = require('./$')
  , $def  = require('./$.def')
  , abs   = Math.abs
  , floor = Math.floor
  , _isFinite = $.g.isFinite
  , MAX_SAFE_INTEGER = 0x1fffffffffffff; // pow(2, 53) - 1 == 9007199254740991;
function isInteger(it){
  return !$.isObject(it) && _isFinite(it) && floor(it) === it;
}
$def($def.S, 'Number', {
  // 20.1.2.1 Number.EPSILON
  EPSILON: Math.pow(2, -52),
  // 20.1.2.2 Number.isFinite(number)
  isFinite: function isFinite(it){
    return typeof it == 'number' && _isFinite(it);
  },
  // 20.1.2.3 Number.isInteger(number)
  isInteger: isInteger,
  // 20.1.2.4 Number.isNaN(number)
  isNaN: function isNaN(number){
    return number != number;
  },
  // 20.1.2.5 Number.isSafeInteger(number)
  isSafeInteger: function isSafeInteger(number){
    return isInteger(number) && abs(number) <= MAX_SAFE_INTEGER;
  },
  // 20.1.2.6 Number.MAX_SAFE_INTEGER
  MAX_SAFE_INTEGER: MAX_SAFE_INTEGER,
  // 20.1.2.10 Number.MIN_SAFE_INTEGER
  MIN_SAFE_INTEGER: -MAX_SAFE_INTEGER,
  // 20.1.2.12 Number.parseFloat(string)
  parseFloat: parseFloat,
  // 20.1.2.13 Number.parseInt(string, radix)
  parseInt: parseInt
});
},{"./$":245,"./$.def":236}],271:[function(require,module,exports){
// 19.1.3.1 Object.assign(target, source)
var $def = require('./$.def');
$def($def.S, 'Object', {assign: require('./$.assign')});
},{"./$.assign":229,"./$.def":236}],272:[function(require,module,exports){
// 19.1.3.10 Object.is(value1, value2)
var $def = require('./$.def');
$def($def.S, 'Object', {
  is: function is(x, y){
    return x === y ? x !== 0 || 1 / x === 1 / y : x != x && y != y;
  }
});
},{"./$.def":236}],273:[function(require,module,exports){
// 19.1.3.19 Object.setPrototypeOf(O, proto)
var $def = require('./$.def');
$def($def.S, 'Object', {setPrototypeOf: require('./$.set-proto').set});
},{"./$.def":236,"./$.set-proto":250}],274:[function(require,module,exports){
var $        = require('./$')
  , $def     = require('./$.def')
  , isObject = $.isObject
  , toObject = $.toObject;
function wrapObjectMethod(METHOD, MODE){
  var fn  = ($.core.Object || {})[METHOD] || Object[METHOD]
    , f   = 0
    , o   = {};
  o[METHOD] = MODE == 1 ? function(it){
    return isObject(it) ? fn(it) : it;
  } : MODE == 2 ? function(it){
    return isObject(it) ? fn(it) : true;
  } : MODE == 3 ? function(it){
    return isObject(it) ? fn(it) : false;
  } : MODE == 4 ? function getOwnPropertyDescriptor(it, key){
    return fn(toObject(it), key);
  } : MODE == 5 ? function getPrototypeOf(it){
    return fn(Object($.assertDefined(it)));
  } : function(it){
    return fn(toObject(it));
  };
  try {
    fn('z');
  } catch(e){
    f = 1;
  }
  $def($def.S + $def.F * f, 'Object', o);
}
wrapObjectMethod('freeze', 1);
wrapObjectMethod('seal', 1);
wrapObjectMethod('preventExtensions', 1);
wrapObjectMethod('isFrozen', 2);
wrapObjectMethod('isSealed', 2);
wrapObjectMethod('isExtensible', 3);
wrapObjectMethod('getOwnPropertyDescriptor', 4);
wrapObjectMethod('getPrototypeOf', 5);
wrapObjectMethod('keys');
wrapObjectMethod('getOwnPropertyNames');
},{"./$":245,"./$.def":236}],275:[function(require,module,exports){
'use strict';
// 19.1.3.6 Object.prototype.toString()
var $   = require('./$')
  , cof = require('./$.cof')
  , tmp = {};
tmp[require('./$.wks')('toStringTag')] = 'z';
if($.FW && cof(tmp) != 'z')$.hide(Object.prototype, 'toString', function toString(){
  return '[object ' + cof.classof(this) + ']';
});
},{"./$":245,"./$.cof":230,"./$.wks":256}],276:[function(require,module,exports){
'use strict';
var $        = require('./$')
  , ctx      = require('./$.ctx')
  , cof      = require('./$.cof')
  , $def     = require('./$.def')
  , assert   = require('./$.assert')
  , forOf    = require('./$.for-of')
  , setProto = require('./$.set-proto').set
  , species  = require('./$.species')
  , SPECIES  = require('./$.wks')('species')
  , RECORD   = require('./$.uid').safe('record')
  , PROMISE  = 'Promise'
  , global   = $.g
  , process  = global.process
  , asap     = process && process.nextTick || require('./$.task').set
  , P        = global[PROMISE]
  , isFunction     = $.isFunction
  , isObject       = $.isObject
  , assertFunction = assert.fn
  , assertObject   = assert.obj
  , test;

var useNative = isFunction(P) && isFunction(P.resolve) &&
  P.resolve(test = new P(function(){})) == test;
// actual Firefox has broken subclass support, test that
function P2(x){
  var self = new P(x);
  setProto(self, P2.prototype);
  return self;
}
if(useNative){
  try { // protect against bad/buggy Object.setPrototype
    setProto(P2, P);
    P2.prototype = $.create(P.prototype, {constructor: {value: P2}});
    if(!(P2.resolve(5).then(function(){}) instanceof P2)){
      useNative = false;
    }
  } catch(e){ useNative = false; }
}

// helpers
function getConstructor(C){
  var S = assertObject(C)[SPECIES];
  return S != undefined ? S : C;
}
function isThenable(it){
  var then;
  if(isObject(it))then = it.then;
  return isFunction(then) ? then : false;
}
function notify(record){
  var chain = record.c;
  if(chain.length)asap(function(){
    var value = record.v
      , ok    = record.s == 1
      , i     = 0;
    while(chain.length > i)!function(react){
      var cb = ok ? react.ok : react.fail
        , ret, then;
      try {
        if(cb){
          if(!ok)record.h = true;
          ret = cb === true ? value : cb(value);
          if(ret === react.P){
            react.rej(TypeError('Promise-chain cycle'));
          } else if(then = isThenable(ret)){
            then.call(ret, react.res, react.rej);
          } else react.res(ret);
        } else react.rej(value);
      } catch(err){
        react.rej(err);
      }
    }(chain[i++]);
    chain.length = 0;
  });
}
function isUnhandled(promise){
  var record = promise[RECORD]
    , chain  = record.a
    , i      = 0
    , react;
  if(record.h)return false;
  while(chain.length > i){
    react = chain[i++];
    if(react.fail || !isUnhandled(react.P))return false;
  } return true;
}
function $reject(value){
  var record = this
    , promise;
  if(record.d)return;
  record.d = true;
  record = record.r || record; // unwrap
  record.v = value;
  record.s = 2;
  asap(function(){
    setTimeout(function(){
      if(isUnhandled(promise = record.p)){
        if(cof(process) == 'process'){
          process.emit('unhandledRejection', value, promise);
        } else if(global.console && isFunction(console.error)){
          console.error('Unhandled promise rejection', value);
        }
      }
    }, 1);
  });
  notify(record);
}
function $resolve(value){
  var record = this
    , then, wrapper;
  if(record.d)return;
  record.d = true;
  record = record.r || record; // unwrap
  try {
    if(then = isThenable(value)){
      wrapper = {r: record, d: false}; // wrap
      then.call(value, ctx($resolve, wrapper, 1), ctx($reject, wrapper, 1));
    } else {
      record.v = value;
      record.s = 1;
      notify(record);
    }
  } catch(err){
    $reject.call(wrapper || {r: record, d: false}, err); // wrap
  }
}

// constructor polyfill
if(!useNative){
  // 25.4.3.1 Promise(executor)
  P = function Promise(executor){
    assertFunction(executor);
    var record = {
      p: assert.inst(this, P, PROMISE),       // <- promise
      c: [],                                  // <- awaiting reactions
      a: [],                                  // <- all reactions
      s: 0,                                   // <- state
      d: false,                               // <- done
      v: undefined,                           // <- value
      h: false                                // <- handled rejection
    };
    $.hide(this, RECORD, record);
    try {
      executor(ctx($resolve, record, 1), ctx($reject, record, 1));
    } catch(err){
      $reject.call(record, err);
    }
  };
  $.mix(P.prototype, {
    // 25.4.5.3 Promise.prototype.then(onFulfilled, onRejected)
    then: function then(onFulfilled, onRejected){
      var S = assertObject(assertObject(this).constructor)[SPECIES];
      var react = {
        ok:   isFunction(onFulfilled) ? onFulfilled : true,
        fail: isFunction(onRejected)  ? onRejected  : false
      };
      var promise = react.P = new (S != undefined ? S : P)(function(res, rej){
        react.res = assertFunction(res);
        react.rej = assertFunction(rej);
      });
      var record = this[RECORD];
      record.a.push(react);
      record.c.push(react);
      record.s && notify(record);
      return promise;
    },
    // 25.4.5.1 Promise.prototype.catch(onRejected)
    'catch': function(onRejected){
      return this.then(undefined, onRejected);
    }
  });
}

// export
$def($def.G + $def.W + $def.F * !useNative, {Promise: P});
cof.set(P, PROMISE);
species(P);
species($.core[PROMISE]); // for wrapper

// statics
$def($def.S + $def.F * !useNative, PROMISE, {
  // 25.4.4.5 Promise.reject(r)
  reject: function reject(r){
    return new (getConstructor(this))(function(res, rej){
      rej(r);
    });
  },
  // 25.4.4.6 Promise.resolve(x)
  resolve: function resolve(x){
    return isObject(x) && RECORD in x && $.getProto(x) === this.prototype
      ? x : new (getConstructor(this))(function(res){
        res(x);
      });
  }
});
$def($def.S + $def.F * !(useNative && require('./$.iter-detect')(function(iter){
  P.all(iter)['catch'](function(){});
})), PROMISE, {
  // 25.4.4.1 Promise.all(iterable)
  all: function all(iterable){
    var C      = getConstructor(this)
      , values = [];
    return new C(function(res, rej){
      forOf(iterable, false, values.push, values);
      var remaining = values.length
        , results   = Array(remaining);
      if(remaining)$.each.call(values, function(promise, index){
        C.resolve(promise).then(function(value){
          results[index] = value;
          --remaining || res(results);
        }, rej);
      });
      else res(results);
    });
  },
  // 25.4.4.4 Promise.race(iterable)
  race: function race(iterable){
    var C = getConstructor(this);
    return new C(function(res, rej){
      forOf(iterable, false, function(promise){
        C.resolve(promise).then(res, rej);
      });
    });
  }
});
},{"./$":245,"./$.assert":228,"./$.cof":230,"./$.ctx":235,"./$.def":236,"./$.for-of":238,"./$.iter-detect":243,"./$.set-proto":250,"./$.species":251,"./$.task":253,"./$.uid":254,"./$.wks":256}],277:[function(require,module,exports){
var $         = require('./$')
  , $def      = require('./$.def')
  , setProto  = require('./$.set-proto')
  , $iter     = require('./$.iter')
  , ITER      = require('./$.uid').safe('iter')
  , step      = $iter.step
  , assert    = require('./$.assert')
  , isObject  = $.isObject
  , getDesc   = $.getDesc
  , setDesc   = $.setDesc
  , getProto  = $.getProto
  , apply     = Function.apply
  , assertObject  = assert.obj
  , _isExtensible = Object.isExtensible || $.it;
function Enumerate(iterated){
  $.set(this, ITER, {o: iterated, k: undefined, i: 0});
}
$iter.create(Enumerate, 'Object', function(){
  var iter = this[ITER]
    , keys = iter.k
    , key;
  if(keys == undefined){
    iter.k = keys = [];
    for(key in iter.o)keys.push(key);
  }
  do {
    if(iter.i >= keys.length)return step(1);
  } while(!((key = keys[iter.i++]) in iter.o));
  return step(0, key);
});

function wrap(fn){
  return function(it){
    assertObject(it);
    try {
      fn.apply(undefined, arguments);
      return true;
    } catch(e){
      return false;
    }
  };
}

function get(target, propertyKey/*, receiver*/){
  var receiver = arguments.length < 3 ? target : arguments[2]
    , desc = getDesc(assertObject(target), propertyKey), proto;
  if(desc)return $.has(desc, 'value')
    ? desc.value
    : desc.get === undefined
      ? undefined
      : desc.get.call(receiver);
  return isObject(proto = getProto(target))
    ? get(proto, propertyKey, receiver)
    : undefined;
}
function set(target, propertyKey, V/*, receiver*/){
  var receiver = arguments.length < 4 ? target : arguments[3]
    , ownDesc  = getDesc(assertObject(target), propertyKey)
    , existingDescriptor, proto;
  if(!ownDesc){
    if(isObject(proto = getProto(target))){
      return set(proto, propertyKey, V, receiver);
    }
    ownDesc = $.desc(0);
  }
  if($.has(ownDesc, 'value')){
    if(ownDesc.writable === false || !isObject(receiver))return false;
    existingDescriptor = getDesc(receiver, propertyKey) || $.desc(0);
    existingDescriptor.value = V;
    setDesc(receiver, propertyKey, existingDescriptor);
    return true;
  }
  return ownDesc.set === undefined ? false : (ownDesc.set.call(receiver, V), true);
}

var reflect = {
  // 26.1.1 Reflect.apply(target, thisArgument, argumentsList)
  apply: require('./$.ctx')(Function.call, apply, 3),
  // 26.1.2 Reflect.construct(target, argumentsList [, newTarget])
  construct: function construct(target, argumentsList /*, newTarget*/){
    var proto    = assert.fn(arguments.length < 3 ? target : arguments[2]).prototype
      , instance = $.create(isObject(proto) ? proto : Object.prototype)
      , result   = apply.call(target, instance, argumentsList);
    return isObject(result) ? result : instance;
  },
  // 26.1.3 Reflect.defineProperty(target, propertyKey, attributes)
  defineProperty: wrap(setDesc),
  // 26.1.4 Reflect.deleteProperty(target, propertyKey)
  deleteProperty: function deleteProperty(target, propertyKey){
    var desc = getDesc(assertObject(target), propertyKey);
    return desc && !desc.configurable ? false : delete target[propertyKey];
  },
  // 26.1.5 Reflect.enumerate(target)
  enumerate: function enumerate(target){
    return new Enumerate(assertObject(target));
  },
  // 26.1.6 Reflect.get(target, propertyKey [, receiver])
  get: get,
  // 26.1.7 Reflect.getOwnPropertyDescriptor(target, propertyKey)
  getOwnPropertyDescriptor: function getOwnPropertyDescriptor(target, propertyKey){
    return getDesc(assertObject(target), propertyKey);
  },
  // 26.1.8 Reflect.getPrototypeOf(target)
  getPrototypeOf: function getPrototypeOf(target){
    return getProto(assertObject(target));
  },
  // 26.1.9 Reflect.has(target, propertyKey)
  has: function has(target, propertyKey){
    return propertyKey in target;
  },
  // 26.1.10 Reflect.isExtensible(target)
  isExtensible: function isExtensible(target){
    return !!_isExtensible(assertObject(target));
  },
  // 26.1.11 Reflect.ownKeys(target)
  ownKeys: require('./$.own-keys'),
  // 26.1.12 Reflect.preventExtensions(target)
  preventExtensions: wrap(Object.preventExtensions || $.it),
  // 26.1.13 Reflect.set(target, propertyKey, V [, receiver])
  set: set
};
// 26.1.14 Reflect.setPrototypeOf(target, proto)
if(setProto)reflect.setPrototypeOf = function setPrototypeOf(target, proto){
  setProto.check(target, proto);
  try {
    setProto.set(target, proto);
    return true;
  } catch(e){
    return false;
  }
};

$def($def.G, {Reflect: {}});
$def($def.S, 'Reflect', reflect);
},{"./$":245,"./$.assert":228,"./$.ctx":235,"./$.def":236,"./$.iter":244,"./$.own-keys":247,"./$.set-proto":250,"./$.uid":254}],278:[function(require,module,exports){
var $      = require('./$')
  , cof    = require('./$.cof')
  , RegExp = $.g.RegExp
  , Base   = RegExp
  , proto  = RegExp.prototype;
function regExpBroken() {
  try {
    var a = /a/g;
    // "new" creates a new object
    if (a === new RegExp(a)) { return true; }
    // RegExp allows a regex with flags as the pattern
    return RegExp(/a/g, 'i') != '/a/i';
  } catch(e) {
    return true;
  }
}
if($.FW && $.DESC){
  if(regExpBroken()) {
    RegExp = function RegExp(pattern, flags){
      return new Base(cof(pattern) == 'RegExp' ? pattern.source : pattern,
        flags === undefined ? pattern.flags : flags);
    };
    $.each.call($.getNames(Base), function(key){
      key in RegExp || $.setDesc(RegExp, key, {
        configurable: true,
        get: function(){ return Base[key]; },
        set: function(it){ Base[key] = it; }
      });
    });
    proto.constructor = RegExp;
    RegExp.prototype = proto;
    $.hide($.g, 'RegExp', RegExp);
  }
  // 21.2.5.3 get RegExp.prototype.flags()
  if(/./g.flags != 'g')$.setDesc(proto, 'flags', {
    configurable: true,
    get: require('./$.replacer')(/^.*\/(\w*)$/, '$1')
  });
}
require('./$.species')(RegExp);
},{"./$":245,"./$.cof":230,"./$.replacer":249,"./$.species":251}],279:[function(require,module,exports){
'use strict';
var strong = require('./$.collection-strong');

// 23.2 Set Objects
require('./$.collection')('Set', {
  // 23.2.3.1 Set.prototype.add(value)
  add: function add(value){
    return strong.def(this, value = value === 0 ? 0 : value, value);
  }
}, strong);
},{"./$.collection":234,"./$.collection-strong":231}],280:[function(require,module,exports){
var $def = require('./$.def');
$def($def.P, 'String', {
  // 21.1.3.3 String.prototype.codePointAt(pos)
  codePointAt: require('./$.string-at')(false)
});
},{"./$.def":236,"./$.string-at":252}],281:[function(require,module,exports){
'use strict';
var $    = require('./$')
  , cof  = require('./$.cof')
  , $def = require('./$.def')
  , toLength = $.toLength;

$def($def.P, 'String', {
  // 21.1.3.6 String.prototype.endsWith(searchString [, endPosition])
  endsWith: function endsWith(searchString /*, endPosition = @length */){
    if(cof(searchString) == 'RegExp')throw TypeError();
    var that = String($.assertDefined(this))
      , endPosition = arguments[1]
      , len = toLength(that.length)
      , end = endPosition === undefined ? len : Math.min(toLength(endPosition), len);
    searchString += '';
    return that.slice(end - searchString.length, end) === searchString;
  }
});
},{"./$":245,"./$.cof":230,"./$.def":236}],282:[function(require,module,exports){
var $def    = require('./$.def')
  , toIndex = require('./$').toIndex
  , fromCharCode = String.fromCharCode;

$def($def.S, 'String', {
  // 21.1.2.2 String.fromCodePoint(...codePoints)
  fromCodePoint: function fromCodePoint(x){ // eslint-disable-line no-unused-vars
    var res = []
      , len = arguments.length
      , i   = 0
      , code;
    while(len > i){
      code = +arguments[i++];
      if(toIndex(code, 0x10ffff) !== code)throw RangeError(code + ' is not a valid code point');
      res.push(code < 0x10000
        ? fromCharCode(code)
        : fromCharCode(((code -= 0x10000) >> 10) + 0xd800, code % 0x400 + 0xdc00)
      );
    } return res.join('');
  }
});
},{"./$":245,"./$.def":236}],283:[function(require,module,exports){
'use strict';
var $    = require('./$')
  , cof  = require('./$.cof')
  , $def = require('./$.def');

$def($def.P, 'String', {
  // 21.1.3.7 String.prototype.includes(searchString, position = 0)
  includes: function includes(searchString /*, position = 0 */){
    if(cof(searchString) == 'RegExp')throw TypeError();
    return !!~String($.assertDefined(this)).indexOf(searchString, arguments[1]);
  }
});
},{"./$":245,"./$.cof":230,"./$.def":236}],284:[function(require,module,exports){
var set   = require('./$').set
  , at    = require('./$.string-at')(true)
  , ITER  = require('./$.uid').safe('iter')
  , $iter = require('./$.iter')
  , step  = $iter.step;

// 21.1.3.27 String.prototype[@@iterator]()
require('./$.iter-define')(String, 'String', function(iterated){
  set(this, ITER, {o: String(iterated), i: 0});
// 21.1.5.2.1 %StringIteratorPrototype%.next()
}, function(){
  var iter  = this[ITER]
    , O     = iter.o
    , index = iter.i
    , point;
  if(index >= O.length)return step(1);
  point = at.call(O, index);
  iter.i += point.length;
  return step(0, point);
});
},{"./$":245,"./$.iter":244,"./$.iter-define":242,"./$.string-at":252,"./$.uid":254}],285:[function(require,module,exports){
var $    = require('./$')
  , $def = require('./$.def');

$def($def.S, 'String', {
  // 21.1.2.4 String.raw(callSite, ...substitutions)
  raw: function raw(callSite){
    var tpl = $.toObject(callSite.raw)
      , len = $.toLength(tpl.length)
      , sln = arguments.length
      , res = []
      , i   = 0;
    while(len > i){
      res.push(String(tpl[i++]));
      if(i < sln)res.push(String(arguments[i]));
    } return res.join('');
  }
});
},{"./$":245,"./$.def":236}],286:[function(require,module,exports){
'use strict';
var $    = require('./$')
  , $def = require('./$.def');

$def($def.P, 'String', {
  // 21.1.3.13 String.prototype.repeat(count)
  repeat: function repeat(count){
    var str = String($.assertDefined(this))
      , res = ''
      , n   = $.toInteger(count);
    if(n < 0 || n == Infinity)throw RangeError("Count can't be negative");
    for(;n > 0; (n >>>= 1) && (str += str))if(n & 1)res += str;
    return res;
  }
});
},{"./$":245,"./$.def":236}],287:[function(require,module,exports){
'use strict';
var $    = require('./$')
  , cof  = require('./$.cof')
  , $def = require('./$.def');

$def($def.P, 'String', {
  // 21.1.3.18 String.prototype.startsWith(searchString [, position ])
  startsWith: function startsWith(searchString /*, position = 0 */){
    if(cof(searchString) == 'RegExp')throw TypeError();
    var that  = String($.assertDefined(this))
      , index = $.toLength(Math.min(arguments[1], that.length));
    searchString += '';
    return that.slice(index, index + searchString.length) === searchString;
  }
});
},{"./$":245,"./$.cof":230,"./$.def":236}],288:[function(require,module,exports){
'use strict';
// ECMAScript 6 symbols shim
var $        = require('./$')
  , setTag   = require('./$.cof').set
  , uid      = require('./$.uid')
  , $def     = require('./$.def')
  , keyOf    = require('./$.keyof')
  , enumKeys = require('./$.enum-keys')
  , assertObject = require('./$.assert').obj
  , has      = $.has
  , $create  = $.create
  , getDesc  = $.getDesc
  , setDesc  = $.setDesc
  , desc     = $.desc
  , getNames = $.getNames
  , toObject = $.toObject
  , Symbol   = $.g.Symbol
  , setter   = false
  , TAG      = uid('tag')
  , HIDDEN   = uid('hidden')
  , SymbolRegistry = {}
  , AllSymbols = {}
  , useNative = $.isFunction(Symbol);

function wrap(tag){
  var sym = AllSymbols[tag] = $.set($create(Symbol.prototype), TAG, tag);
  $.DESC && setter && setDesc(Object.prototype, tag, {
    configurable: true,
    set: function(value){
      if(has(this, HIDDEN) && has(this[HIDDEN], tag))this[HIDDEN][tag] = false;
      setDesc(this, tag, desc(1, value));
    }
  });
  return sym;
}

function defineProperty(it, key, D){
  if(D && has(AllSymbols, key)){
    if(!D.enumerable){
      if(!has(it, HIDDEN))setDesc(it, HIDDEN, desc(1, {}));
      it[HIDDEN][key] = true;
    } else {
      if(has(it, HIDDEN) && it[HIDDEN][key])it[HIDDEN][key] = false;
      D.enumerable = false;
    }
  } return setDesc(it, key, D);
}
function defineProperties(it, P){
  assertObject(it);
  var keys = enumKeys(P = toObject(P))
    , i    = 0
    , l = keys.length
    , key;
  while(l > i)defineProperty(it, key = keys[i++], P[key]);
  return it;
}
function create(it, P){
  return P === undefined ? $create(it) : defineProperties($create(it), P);
}
function getOwnPropertyDescriptor(it, key){
  var D = getDesc(it = toObject(it), key);
  if(D && has(AllSymbols, key) && !(has(it, HIDDEN) && it[HIDDEN][key]))D.enumerable = true;
  return D;
}
function getOwnPropertyNames(it){
  var names  = getNames(toObject(it))
    , result = []
    , i      = 0
    , key;
  while(names.length > i)if(!has(AllSymbols, key = names[i++]) && key != HIDDEN)result.push(key);
  return result;
}
function getOwnPropertySymbols(it){
  var names  = getNames(toObject(it))
    , result = []
    , i      = 0
    , key;
  while(names.length > i)if(has(AllSymbols, key = names[i++]))result.push(AllSymbols[key]);
  return result;
}

// 19.4.1.1 Symbol([description])
if(!useNative){
  Symbol = function Symbol(description){
    if(this instanceof Symbol)throw TypeError('Symbol is not a constructor');
    return wrap(uid(description));
  };
  $.hide(Symbol.prototype, 'toString', function(){
    return this[TAG];
  });

  $.create     = create;
  $.setDesc    = defineProperty;
  $.getDesc    = getOwnPropertyDescriptor;
  $.setDescs   = defineProperties;
  $.getNames   = getOwnPropertyNames;
  $.getSymbols = getOwnPropertySymbols;
}

var symbolStatics = {
  // 19.4.2.1 Symbol.for(key)
  'for': function(key){
    return has(SymbolRegistry, key += '')
      ? SymbolRegistry[key]
      : SymbolRegistry[key] = Symbol(key);
  },
  // 19.4.2.5 Symbol.keyFor(sym)
  keyFor: function keyFor(key){
    return keyOf(SymbolRegistry, key);
  },
  useSetter: function(){ setter = true; },
  useSimple: function(){ setter = false; }
};
// 19.4.2.2 Symbol.hasInstance
// 19.4.2.3 Symbol.isConcatSpreadable
// 19.4.2.4 Symbol.iterator
// 19.4.2.6 Symbol.match
// 19.4.2.8 Symbol.replace
// 19.4.2.9 Symbol.search
// 19.4.2.10 Symbol.species
// 19.4.2.11 Symbol.split
// 19.4.2.12 Symbol.toPrimitive
// 19.4.2.13 Symbol.toStringTag
// 19.4.2.14 Symbol.unscopables
$.each.call((
    'hasInstance,isConcatSpreadable,iterator,match,replace,search,' +
    'species,split,toPrimitive,toStringTag,unscopables'
  ).split(','), function(it){
    var sym = require('./$.wks')(it);
    symbolStatics[it] = useNative ? sym : wrap(sym);
  }
);

setter = true;

$def($def.G + $def.W, {Symbol: Symbol});

$def($def.S, 'Symbol', symbolStatics);

$def($def.S + $def.F * !useNative, 'Object', {
  // 19.1.2.2 Object.create(O [, Properties])
  create: create,
  // 19.1.2.4 Object.defineProperty(O, P, Attributes)
  defineProperty: defineProperty,
  // 19.1.2.3 Object.defineProperties(O, Properties)
  defineProperties: defineProperties,
  // 19.1.2.6 Object.getOwnPropertyDescriptor(O, P)
  getOwnPropertyDescriptor: getOwnPropertyDescriptor,
  // 19.1.2.7 Object.getOwnPropertyNames(O)
  getOwnPropertyNames: getOwnPropertyNames,
  // 19.1.2.8 Object.getOwnPropertySymbols(O)
  getOwnPropertySymbols: getOwnPropertySymbols
});

// 19.4.3.5 Symbol.prototype[@@toStringTag]
setTag(Symbol, 'Symbol');
// 20.2.1.9 Math[@@toStringTag]
setTag(Math, 'Math', true);
// 24.3.3 JSON[@@toStringTag]
setTag($.g.JSON, 'JSON', true);
},{"./$":245,"./$.assert":228,"./$.cof":230,"./$.def":236,"./$.enum-keys":237,"./$.keyof":246,"./$.uid":254,"./$.wks":256}],289:[function(require,module,exports){
'use strict';
var $         = require('./$')
  , weak      = require('./$.collection-weak')
  , leakStore = weak.leakStore
  , ID        = weak.ID
  , WEAK      = weak.WEAK
  , has       = $.has
  , isObject  = $.isObject
  , isFrozen  = Object.isFrozen || $.core.Object.isFrozen
  , tmp       = {};

// 23.3 WeakMap Objects
var WeakMap = require('./$.collection')('WeakMap', {
  // 23.3.3.3 WeakMap.prototype.get(key)
  get: function get(key){
    if(isObject(key)){
      if(isFrozen(key))return leakStore(this).get(key);
      if(has(key, WEAK))return key[WEAK][this[ID]];
    }
  },
  // 23.3.3.5 WeakMap.prototype.set(key, value)
  set: function set(key, value){
    return weak.def(this, key, value);
  }
}, weak, true, true);

// IE11 WeakMap frozen keys fix
if($.FW && new WeakMap().set((Object.freeze || Object)(tmp), 7).get(tmp) != 7){
  $.each.call(['delete', 'has', 'get', 'set'], function(key){
    var method = WeakMap.prototype[key];
    WeakMap.prototype[key] = function(a, b){
      // store frozen objects on leaky map
      if(isObject(a) && isFrozen(a)){
        var result = leakStore(this)[key](a, b);
        return key == 'set' ? this : result;
      // store all the rest on native weakmap
      } return method.call(this, a, b);
    };
  });
}
},{"./$":245,"./$.collection":234,"./$.collection-weak":233}],290:[function(require,module,exports){
'use strict';
var weak = require('./$.collection-weak');

// 23.4 WeakSet Objects
require('./$.collection')('WeakSet', {
  // 23.4.3.1 WeakSet.prototype.add(value)
  add: function add(value){
    return weak.def(this, value, true);
  }
}, weak, false, true);
},{"./$.collection":234,"./$.collection-weak":233}],291:[function(require,module,exports){
// https://github.com/domenic/Array.prototype.includes
var $def = require('./$.def');
$def($def.P, 'Array', {
  includes: require('./$.array-includes')(true)
});
require('./$.unscope')('includes');
},{"./$.array-includes":226,"./$.def":236,"./$.unscope":255}],292:[function(require,module,exports){
// https://github.com/DavidBruant/Map-Set.prototype.toJSON
require('./$.collection-to-json')('Map');
},{"./$.collection-to-json":232}],293:[function(require,module,exports){
// https://gist.github.com/WebReflection/9353781
var $       = require('./$')
  , $def    = require('./$.def')
  , ownKeys = require('./$.own-keys');

$def($def.S, 'Object', {
  getOwnPropertyDescriptors: function getOwnPropertyDescriptors(object){
    var O      = $.toObject(object)
      , result = {};
    $.each.call(ownKeys(O), function(key){
      $.setDesc(result, key, $.desc(0, $.getDesc(O, key)));
    });
    return result;
  }
});
},{"./$":245,"./$.def":236,"./$.own-keys":247}],294:[function(require,module,exports){
// http://goo.gl/XkBrjD
var $    = require('./$')
  , $def = require('./$.def');
function createObjectToArray(isEntries){
  return function(object){
    var O      = $.toObject(object)
      , keys   = $.getKeys(O)
      , length = keys.length
      , i      = 0
      , result = Array(length)
      , key;
    if(isEntries)while(length > i)result[i] = [key = keys[i++], O[key]];
    else while(length > i)result[i] = O[keys[i++]];
    return result;
  };
}
$def($def.S, 'Object', {
  values:  createObjectToArray(false),
  entries: createObjectToArray(true)
});
},{"./$":245,"./$.def":236}],295:[function(require,module,exports){
// https://gist.github.com/kangax/9698100
var $def = require('./$.def');
$def($def.S, 'RegExp', {
  escape: require('./$.replacer')(/([\\\-[\]{}()*+?.,^$|])/g, '\\$1', true)
});
},{"./$.def":236,"./$.replacer":249}],296:[function(require,module,exports){
// https://github.com/DavidBruant/Map-Set.prototype.toJSON
require('./$.collection-to-json')('Set');
},{"./$.collection-to-json":232}],297:[function(require,module,exports){
// https://github.com/mathiasbynens/String.prototype.at
var $def = require('./$.def');
$def($def.P, 'String', {
  at: require('./$.string-at')(true)
});
},{"./$.def":236,"./$.string-at":252}],298:[function(require,module,exports){
// JavaScript 1.6 / Strawman array statics shim
var $       = require('./$')
  , $def    = require('./$.def')
  , $Array  = $.core.Array || Array
  , statics = {};
function setStatics(keys, length){
  $.each.call(keys.split(','), function(key){
    if(length == undefined && key in $Array)statics[key] = $Array[key];
    else if(key in [])statics[key] = require('./$.ctx')(Function.call, [][key], length);
  });
}
setStatics('pop,reverse,shift,keys,values,entries', 1);
setStatics('indexOf,every,some,forEach,map,filter,find,findIndex,includes', 3);
setStatics('join,slice,concat,push,splice,unshift,sort,lastIndexOf,' +
           'reduce,reduceRight,copyWithin,fill,turn');
$def($def.S, 'Array', statics);
},{"./$":245,"./$.ctx":235,"./$.def":236}],299:[function(require,module,exports){
require('./es6.array.iterator');
var $           = require('./$')
  , Iterators   = require('./$.iter').Iterators
  , ITERATOR    = require('./$.wks')('iterator')
  , ArrayValues = Iterators.Array
  , NodeList    = $.g.NodeList;
if($.FW && NodeList && !(ITERATOR in NodeList.prototype)){
  $.hide(NodeList.prototype, ITERATOR, ArrayValues);
}
Iterators.NodeList = ArrayValues;
},{"./$":245,"./$.iter":244,"./$.wks":256,"./es6.array.iterator":263}],300:[function(require,module,exports){
var $def  = require('./$.def')
  , $task = require('./$.task');
$def($def.G + $def.B, {
  setImmediate:   $task.set,
  clearImmediate: $task.clear
});
},{"./$.def":236,"./$.task":253}],301:[function(require,module,exports){
// ie9- setTimeout & setInterval additional parameters fix
var $         = require('./$')
  , $def      = require('./$.def')
  , invoke    = require('./$.invoke')
  , partial   = require('./$.partial')
  , navigator = $.g.navigator
  , MSIE      = !!navigator && /MSIE .\./.test(navigator.userAgent); // <- dirty ie9- check
function wrap(set){
  return MSIE ? function(fn, time /*, ...args */){
    return set(invoke(
      partial,
      [].slice.call(arguments, 2),
      $.isFunction(fn) ? fn : Function(fn)
    ), time);
  } : set;
}
$def($def.G + $def.B + $def.F * MSIE, {
  setTimeout:  wrap($.g.setTimeout),
  setInterval: wrap($.g.setInterval)
});
},{"./$":245,"./$.def":236,"./$.invoke":240,"./$.partial":248}],302:[function(require,module,exports){
require('./modules/es5');
require('./modules/es6.symbol');
require('./modules/es6.object.assign');
require('./modules/es6.object.is');
require('./modules/es6.object.set-prototype-of');
require('./modules/es6.object.to-string');
require('./modules/es6.object.statics-accept-primitives');
require('./modules/es6.function.name');
require('./modules/es6.number.constructor');
require('./modules/es6.number.statics');
require('./modules/es6.math');
require('./modules/es6.string.from-code-point');
require('./modules/es6.string.raw');
require('./modules/es6.string.iterator');
require('./modules/es6.string.code-point-at');
require('./modules/es6.string.ends-with');
require('./modules/es6.string.includes');
require('./modules/es6.string.repeat');
require('./modules/es6.string.starts-with');
require('./modules/es6.array.from');
require('./modules/es6.array.of');
require('./modules/es6.array.iterator');
require('./modules/es6.array.species');
require('./modules/es6.array.copy-within');
require('./modules/es6.array.fill');
require('./modules/es6.array.find');
require('./modules/es6.array.find-index');
require('./modules/es6.regexp');
require('./modules/es6.promise');
require('./modules/es6.map');
require('./modules/es6.set');
require('./modules/es6.weak-map');
require('./modules/es6.weak-set');
require('./modules/es6.reflect');
require('./modules/es7.array.includes');
require('./modules/es7.string.at');
require('./modules/es7.regexp.escape');
require('./modules/es7.object.get-own-property-descriptors');
require('./modules/es7.object.to-array');
require('./modules/es7.map.to-json');
require('./modules/es7.set.to-json');
require('./modules/js.array.statics');
require('./modules/web.timers');
require('./modules/web.immediate');
require('./modules/web.dom.iterable');
module.exports = require('./modules/$').core;
},{"./modules/$":245,"./modules/es5":257,"./modules/es6.array.copy-within":258,"./modules/es6.array.fill":259,"./modules/es6.array.find":261,"./modules/es6.array.find-index":260,"./modules/es6.array.from":262,"./modules/es6.array.iterator":263,"./modules/es6.array.of":264,"./modules/es6.array.species":265,"./modules/es6.function.name":266,"./modules/es6.map":267,"./modules/es6.math":268,"./modules/es6.number.constructor":269,"./modules/es6.number.statics":270,"./modules/es6.object.assign":271,"./modules/es6.object.is":272,"./modules/es6.object.set-prototype-of":273,"./modules/es6.object.statics-accept-primitives":274,"./modules/es6.object.to-string":275,"./modules/es6.promise":276,"./modules/es6.reflect":277,"./modules/es6.regexp":278,"./modules/es6.set":279,"./modules/es6.string.code-point-at":280,"./modules/es6.string.ends-with":281,"./modules/es6.string.from-code-point":282,"./modules/es6.string.includes":283,"./modules/es6.string.iterator":284,"./modules/es6.string.raw":285,"./modules/es6.string.repeat":286,"./modules/es6.string.starts-with":287,"./modules/es6.symbol":288,"./modules/es6.weak-map":289,"./modules/es6.weak-set":290,"./modules/es7.array.includes":291,"./modules/es7.map.to-json":292,"./modules/es7.object.get-own-property-descriptors":293,"./modules/es7.object.to-array":294,"./modules/es7.regexp.escape":295,"./modules/es7.set.to-json":296,"./modules/es7.string.at":297,"./modules/js.array.statics":298,"./modules/web.dom.iterable":299,"./modules/web.immediate":300,"./modules/web.timers":301}],303:[function(require,module,exports){

/**
 * This is the common logic for both the Node.js and web browser
 * implementations of `debug()`.
 *
 * Expose `debug()` as the module.
 */

exports = module.exports = debug;
exports.coerce = coerce;
exports.disable = disable;
exports.enable = enable;
exports.enabled = enabled;
exports.humanize = require('ms');

/**
 * The currently active debug mode names, and names to skip.
 */

exports.names = [];
exports.skips = [];

/**
 * Map of special "%n" handling functions, for the debug "format" argument.
 *
 * Valid key names are a single, lowercased letter, i.e. "n".
 */

exports.formatters = {};

/**
 * Previously assigned color.
 */

var prevColor = 0;

/**
 * Previous log timestamp.
 */

var prevTime;

/**
 * Select a color.
 *
 * @return {Number}
 * @api private
 */

function selectColor() {
  return exports.colors[prevColor++ % exports.colors.length];
}

/**
 * Create a debugger with the given `namespace`.
 *
 * @param {String} namespace
 * @return {Function}
 * @api public
 */

function debug(namespace) {

  // define the `disabled` version
  function disabled() {
  }
  disabled.enabled = false;

  // define the `enabled` version
  function enabled() {

    var self = enabled;

    // set `diff` timestamp
    var curr = +new Date();
    var ms = curr - (prevTime || curr);
    self.diff = ms;
    self.prev = prevTime;
    self.curr = curr;
    prevTime = curr;

    // add the `color` if not set
    if (null == self.useColors) self.useColors = exports.useColors();
    if (null == self.color && self.useColors) self.color = selectColor();

    var args = Array.prototype.slice.call(arguments);

    args[0] = exports.coerce(args[0]);

    if ('string' !== typeof args[0]) {
      // anything else let's inspect with %o
      args = ['%o'].concat(args);
    }

    // apply any `formatters` transformations
    var index = 0;
    args[0] = args[0].replace(/%([a-z%])/g, function(match, format) {
      // if we encounter an escaped % then don't increase the array index
      if (match === '%%') return match;
      index++;
      var formatter = exports.formatters[format];
      if ('function' === typeof formatter) {
        var val = args[index];
        match = formatter.call(self, val);

        // now we need to remove `args[index]` since it's inlined in the `format`
        args.splice(index, 1);
        index--;
      }
      return match;
    });

    if ('function' === typeof exports.formatArgs) {
      args = exports.formatArgs.apply(self, args);
    }
    var logFn = enabled.log || exports.log || console.log.bind(console);
    logFn.apply(self, args);
  }
  enabled.enabled = true;

  var fn = exports.enabled(namespace) ? enabled : disabled;

  fn.namespace = namespace;

  return fn;
}

/**
 * Enables a debug mode by namespaces. This can include modes
 * separated by a colon and wildcards.
 *
 * @param {String} namespaces
 * @api public
 */

function enable(namespaces) {
  exports.save(namespaces);

  var split = (namespaces || '').split(/[\s,]+/);
  var len = split.length;

  for (var i = 0; i < len; i++) {
    if (!split[i]) continue; // ignore empty strings
    namespaces = split[i].replace(/\*/g, '.*?');
    if (namespaces[0] === '-') {
      exports.skips.push(new RegExp('^' + namespaces.substr(1) + '$'));
    } else {
      exports.names.push(new RegExp('^' + namespaces + '$'));
    }
  }
}

/**
 * Disable debug output.
 *
 * @api public
 */

function disable() {
  exports.enable('');
}

/**
 * Returns true if the given mode name is enabled, false otherwise.
 *
 * @param {String} name
 * @return {Boolean}
 * @api public
 */

function enabled(name) {
  var i, len;
  for (i = 0, len = exports.skips.length; i < len; i++) {
    if (exports.skips[i].test(name)) {
      return false;
    }
  }
  for (i = 0, len = exports.names.length; i < len; i++) {
    if (exports.names[i].test(name)) {
      return true;
    }
  }
  return false;
}

/**
 * Coerce `val`.
 *
 * @param {Mixed} val
 * @return {Mixed}
 * @api private
 */

function coerce(val) {
  if (val instanceof Error) return val.stack || val.message;
  return val;
}

},{"ms":305}],304:[function(require,module,exports){
(function (process){

/**
 * Module dependencies.
 */

var tty = require('tty');
var util = require('util');

/**
 * This is the Node.js implementation of `debug()`.
 *
 * Expose `debug()` as the module.
 */

exports = module.exports = require('./debug');
exports.log = log;
exports.formatArgs = formatArgs;
exports.save = save;
exports.load = load;
exports.useColors = useColors;

/**
 * Colors.
 */

exports.colors = [6, 2, 3, 4, 5, 1];

/**
 * The file descriptor to write the `debug()` calls to.
 * Set the `DEBUG_FD` env variable to override with another value. i.e.:
 *
 *   $ DEBUG_FD=3 node script.js 3>debug.log
 */

var fd = parseInt(process.env.DEBUG_FD, 10) || 2;
var stream = 1 === fd ? process.stdout :
             2 === fd ? process.stderr :
             createWritableStdioStream(fd);

/**
 * Is stdout a TTY? Colored output is enabled when `true`.
 */

function useColors() {
  var debugColors = (process.env.DEBUG_COLORS || '').trim().toLowerCase();
  if (0 === debugColors.length) {
    return tty.isatty(fd);
  } else {
    return '0' !== debugColors
        && 'no' !== debugColors
        && 'false' !== debugColors
        && 'disabled' !== debugColors;
  }
}

/**
 * Map %o to `util.inspect()`, since Node doesn't do that out of the box.
 */

var inspect = (4 === util.inspect.length ?
  // node <= 0.8.x
  function (v, colors) {
    return util.inspect(v, void 0, void 0, colors);
  } :
  // node > 0.8.x
  function (v, colors) {
    return util.inspect(v, { colors: colors });
  }
);

exports.formatters.o = function(v) {
  return inspect(v, this.useColors)
    .replace(/\s*\n\s*/g, ' ');
};

/**
 * Adds ANSI color escape codes if enabled.
 *
 * @api public
 */

function formatArgs() {
  var args = arguments;
  var useColors = this.useColors;
  var name = this.namespace;

  if (useColors) {
    var c = this.color;

    args[0] = '  \u001b[3' + c + ';1m' + name + ' '
      + '\u001b[0m'
      + args[0] + '\u001b[3' + c + 'm'
      + ' +' + exports.humanize(this.diff) + '\u001b[0m';
  } else {
    args[0] = new Date().toUTCString()
      + ' ' + name + ' ' + args[0];
  }
  return args;
}

/**
 * Invokes `console.error()` with the specified arguments.
 */

function log() {
  return stream.write(util.format.apply(this, arguments) + '\n');
}

/**
 * Save `namespaces`.
 *
 * @param {String} namespaces
 * @api private
 */

function save(namespaces) {
  if (null == namespaces) {
    // If you set a process.env field to null or undefined, it gets cast to the
    // string 'null' or 'undefined'. Just delete instead.
    delete process.env.DEBUG;
  } else {
    process.env.DEBUG = namespaces;
  }
}

/**
 * Load `namespaces`.
 *
 * @return {String} returns the previously persisted debug modes
 * @api private
 */

function load() {
  return process.env.DEBUG;
}

/**
 * Copied from `node/src/node.js`.
 *
 * XXX: It's lame that node doesn't expose this API out-of-the-box. It also
 * relies on the undocumented `tty_wrap.guessHandleType()` which is also lame.
 */

function createWritableStdioStream (fd) {
  var stream;
  var tty_wrap = process.binding('tty_wrap');

  // Note stream._type is used for test-module-load-list.js

  switch (tty_wrap.guessHandleType(fd)) {
    case 'TTY':
      stream = new tty.WriteStream(fd);
      stream._type = 'tty';

      // Hack to have stream not keep the event loop alive.
      // See https://github.com/joyent/node/issues/1726
      if (stream._handle && stream._handle.unref) {
        stream._handle.unref();
      }
      break;

    case 'FILE':
      var fs = require('fs');
      stream = new fs.SyncWriteStream(fd, { autoClose: false });
      stream._type = 'fs';
      break;

    case 'PIPE':
    case 'TCP':
      var net = require('net');
      stream = new net.Socket({
        fd: fd,
        readable: false,
        writable: true
      });

      // FIXME Should probably have an option in net.Socket to create a
      // stream from an existing fd which is writable only. But for now
      // we'll just add this hack and set the `readable` member to false.
      // Test: ./node test/fixtures/echo.js < /etc/passwd
      stream.readable = false;
      stream.read = null;
      stream._type = 'pipe';

      // FIXME Hack to have stream not keep the event loop alive.
      // See https://github.com/joyent/node/issues/1726
      if (stream._handle && stream._handle.unref) {
        stream._handle.unref();
      }
      break;

    default:
      // Probably an error on in uv_guess_handle()
      throw new Error('Implement me. Unknown stream file type!');
  }

  // For supporting legacy API we put the FD here.
  stream.fd = fd;

  stream._isStdio = true;

  return stream;
}

/**
 * Enable namespaces listed in `process.env.DEBUG` initially.
 */

exports.enable(load());

}).call(this,require('_process'))
},{"./debug":303,"_process":200,"fs":189,"net":189,"tty":214,"util":216}],305:[function(require,module,exports){
/**
 * Helpers.
 */

var s = 1000;
var m = s * 60;
var h = m * 60;
var d = h * 24;
var y = d * 365.25;

/**
 * Parse or format the given `val`.
 *
 * Options:
 *
 *  - `long` verbose formatting [false]
 *
 * @param {String|Number} val
 * @param {Object} options
 * @return {String|Number}
 * @api public
 */

module.exports = function(val, options){
  options = options || {};
  if ('string' == typeof val) return parse(val);
  return options.long
    ? long(val)
    : short(val);
};

/**
 * Parse the given `str` and return milliseconds.
 *
 * @param {String} str
 * @return {Number}
 * @api private
 */

function parse(str) {
  var match = /^((?:\d+)?\.?\d+) *(milliseconds?|msecs?|ms|seconds?|secs?|s|minutes?|mins?|m|hours?|hrs?|h|days?|d|years?|yrs?|y)?$/i.exec(str);
  if (!match) return;
  var n = parseFloat(match[1]);
  var type = (match[2] || 'ms').toLowerCase();
  switch (type) {
    case 'years':
    case 'year':
    case 'yrs':
    case 'yr':
    case 'y':
      return n * y;
    case 'days':
    case 'day':
    case 'd':
      return n * d;
    case 'hours':
    case 'hour':
    case 'hrs':
    case 'hr':
    case 'h':
      return n * h;
    case 'minutes':
    case 'minute':
    case 'mins':
    case 'min':
    case 'm':
      return n * m;
    case 'seconds':
    case 'second':
    case 'secs':
    case 'sec':
    case 's':
      return n * s;
    case 'milliseconds':
    case 'millisecond':
    case 'msecs':
    case 'msec':
    case 'ms':
      return n;
  }
}

/**
 * Short format for `ms`.
 *
 * @param {Number} ms
 * @return {String}
 * @api private
 */

function short(ms) {
  if (ms >= d) return Math.round(ms / d) + 'd';
  if (ms >= h) return Math.round(ms / h) + 'h';
  if (ms >= m) return Math.round(ms / m) + 'm';
  if (ms >= s) return Math.round(ms / s) + 's';
  return ms + 'ms';
}

/**
 * Long format for `ms`.
 *
 * @param {Number} ms
 * @return {String}
 * @api private
 */

function long(ms) {
  return plural(ms, d, 'day')
    || plural(ms, h, 'hour')
    || plural(ms, m, 'minute')
    || plural(ms, s, 'second')
    || ms + ' ms';
}

/**
 * Pluralization helper.
 */

function plural(ms, n, name) {
  if (ms < n) return;
  if (ms < n * 1.5) return Math.floor(ms / n) + ' ' + name;
  return Math.ceil(ms / n) + ' ' + name + 's';
}

},{}],306:[function(require,module,exports){
'use strict';
var repeating = require('repeating');

// detect either spaces or tabs but not both to properly handle tabs
// for indentation and spaces for alignment
var INDENT_RE = /^(?:( )+|\t+)/;

function getMostUsed(indents) {
	var result = 0;
	var maxUsed = 0;
	var maxWeight = 0;

	for (var n in indents) {
		var indent = indents[n];
		var u = indent[0];
		var w = indent[1];

		if (u > maxUsed || u === maxUsed && w > maxWeight) {
			maxUsed = u;
			maxWeight = w;
			result = +n;
		}
	}

	return result;
}

module.exports = function (str) {
	if (typeof str !== 'string') {
		throw new TypeError('Expected a string');
	}

	// used to see if tabs or spaces are the most used
	var tabs = 0;
	var spaces = 0;

	// remember the size of previous line's indentation
	var prev = 0;

	// remember how many indents/unindents as occurred for a given size
	// and how much lines follow a given indentation
	//
	// indents = {
	//    3: [1, 0],
	//    4: [1, 5],
	//    5: [1, 0],
	//   12: [1, 0],
	// }
	var indents = {};

	// pointer to the array of last used indent
	var current;

	// whether the last action was an indent (opposed to an unindent)
	var isIndent;

	str.split(/\n/g).forEach(function (line) {
		if (!line) {
			// ignore empty lines
			return;
		}

		var indent;
		var matches = line.match(INDENT_RE);

		if (!matches) {
			indent = 0;
		} else {
			indent = matches[0].length;

			if (matches[1]) {
				spaces++;
			} else {
				tabs++;
			}
		}

		var diff = indent - prev;
		prev = indent;

		if (diff) {
			// an indent or unindent has been detected

			isIndent = diff > 0;

			current = indents[isIndent ? diff : -diff];

			if (current) {
				current[0]++;
			} else {
				current = indents[diff] = [1, 0];
			}
		} else if (current) {
			// if the last action was an indent, increment the weight
			current[1] += +isIndent;
		}
	});

	var amount = getMostUsed(indents);

	var type;
	var actual;
	if (!amount) {
		type = null;
		actual = '';
	} else if (spaces >= tabs) {
		type = 'space';
		actual = repeating(' ', amount);
	} else {
		type = 'tab';
		actual = repeating('\t', amount);
	}

	return {
		amount: amount,
		type: type,
		indent: actual
	};
};

},{"repeating":479}],307:[function(require,module,exports){
/* vim: set sw=4 sts=4 : */
(function () {

    var estraverse = require('estraverse');
    var parser = require('./parser');

    var isArray = Array.isArray || function isArray(array) {
        return {}.toString.call(array) === '[object Array]';
    };

    function esqueryModule() {

        /**
         * Get the value of a property which may be multiple levels down in the object.
         */
        function getPath(obj, key) {
            var i, keys = key.split(".");
            for (i = 0; i < keys.length; i++) {
                if (obj == null) { return obj; }
                obj = obj[keys[i]];
            }
            return obj;
        }

        /**
         * Determine whether `node` can be reached by following `path`, starting at `ancestor`.
         */
        function inPath(node, ancestor, path) {
            var field, remainingPath, i;
            if (path.length === 0) { return node === ancestor; }
            if (ancestor == null) { return false; }
            field = ancestor[path[0]];
            remainingPath = path.slice(1);
            if (isArray(field)) {
                for (i = 0, l = field.length; i < l; ++i) {
                    if (inPath(node, field[i], remainingPath)) { return true; }
                }
                return false;
            } else {
                return inPath(node, field, remainingPath);
            }
        }

        /**
         * Given a `node` and its ancestors, determine if `node` is matched by `selector`.
         */
        function matches(node, selector, ancestry) {
            var path, ancestor, i, l, p;
            if (!selector) { return true; }
            if (!node) { return false; }
            if (!ancestry) { ancestry = []; }

            switch(selector.type) {
                case 'wildcard':
                    return true;

                case 'identifier':
                    return selector.value.toLowerCase() === node.type.toLowerCase();

                case 'field':
                    path = selector.name.split('.');
                    ancestor = ancestry[path.length - 1];
                    return inPath(node, ancestor, path);

                case 'matches':
                    for (i = 0, l = selector.selectors.length; i < l; ++i) {
                        if (matches(node, selector.selectors[i], ancestry)) { return true; }
                    }
                    return false;

                case 'compound':
                    for (i = 0, l = selector.selectors.length; i < l; ++i) {
                        if (!matches(node, selector.selectors[i], ancestry)) { return false; }
                    }
                    return true;

                case 'not':
                    for (i = 0, l = selector.selectors.length; i < l; ++i) {
                        if (matches(node, selector.selectors[i], ancestry)) { return false; }
                    }
                    return true;

                case 'child':
                    if (matches(node, selector.right, ancestry)) {
                        return matches(ancestry[0], selector.left, ancestry.slice(1));
                    }
                    return false;

                case 'descendant':
                    if (matches(node, selector.right, ancestry)) {
                        for (i = 0, l = ancestry.length; i < l; ++i) {
                            if (matches(ancestry[i], selector.left, ancestry.slice(i + 1))) {
                                return true;
                            }
                        }
                    }
                    return false;

                case 'attribute':
                    p = getPath(node, selector.name);
                    switch (selector.operator) {
                        case null:
                        case void 0:
                            return p != null;
                        case '=':
                            switch (selector.value.type) {
                                case 'regexp': return selector.value.value.test(p);
                                case 'literal': return '' + selector.value.value === '' + p;
                                case 'type': return selector.value.value === typeof p;
                            }
                        case '!=':
                            switch (selector.value.type) {
                                case 'regexp': return !selector.value.value.test(p);
                                case 'literal': return '' + selector.value.value !== '' + p;
                                case 'type': return selector.value.value !== typeof p;
                            }
                        case '<=': return p <= selector.value.value;
                        case '<': return p < selector.value.value;
                        case '>': return p > selector.value.value;
                        case '>=': return p >= selector.value.value;
                    }

                case 'sibling':
                    return matches(node, selector.right, ancestry) &&
                        sibling(node, selector.left, ancestry) ||
                        matches(node, selector.left, ancestry) &&
                        sibling(node, selector.right, ancestry);

                case 'adjacent':
                    return matches(node, selector.right, ancestry) &&
                        adjacent(node, selector.left, ancestry) ||
                        matches(node, selector.left, ancestry) &&
                        adjacent(node, selector.right, ancestry);

                case 'nth-child':
                    return matches(node, selector.right, ancestry) &&
                        nthChild(node, ancestry, function (length) {
                            return selector.index.value - 1;
                        });

                case 'nth-last-child':
                    return matches(node, selector.right, ancestry) &&
                        nthChild(node, ancestry, function (length) {
                            return length - selector.index.value;
                        });

                case 'class':
                    if(!node.type) return false;
                    switch(selector.name.toLowerCase()){
                        case 'statement':
                            if(node.type.slice(-9) === 'Statement') return true;
                            // fallthrough: interface Declaration <: Statement { }
                        case 'declaration':
                            return node.type.slice(-11) === 'Declaration';
                        case 'pattern':
                            if(node.type.slice(-7) === 'Pattern') return true;
                            // fallthrough: interface Expression <: Node, Pattern { }
                        case 'expression':
                            return node.type.slice(-10) === 'Expression' ||
                                node.type === 'Literal' ||
                                node.type === 'Identifier';
                        case 'function':
                            return node.type.slice(0, 8) === 'Function' ||
                                node.type === 'ArrowFunctionExpression';
                    }
                    throw new Error('Unknown class name: ' + selector.name);
            }

            throw new Error('Unknown selector type: ' + selector.type);
        }

        /*
         * Determines if the given node has a sibling that matches the given selector.
         */
        function sibling(node, selector, ancestry) {
            var parent = ancestry[0], listProp, keys, i, l, k, m;
            if (!parent) { return false; }
            keys = estraverse.VisitorKeys[parent.type];
            for (i = 0, l = keys.length; i < l; ++i) {
                listProp = parent[keys[i]];
                if (isArray(listProp)) {
                    for (k = 0, m = listProp.length; k < m; ++k) {
                        if (listProp[k] !== node && matches(listProp[k], selector, ancestry)) {
                            return true;
                        }
                    }
                }
            }
            return false;
        }

        /*
         * Determines if the given node has an asjacent sibling that matches the given selector.
         */
        function adjacent(node, selector, ancestry) {
            var parent = ancestry[0], listProp, keys, i, l, idx;
            if (!parent) { return false; }
            keys = estraverse.VisitorKeys[parent.type];
            for (i = 0, l = keys.length; i < l; ++i) {
                listProp = parent[keys[i]];
                if (isArray(listProp)) {
                    idx = listProp.indexOf(node);
                    if (idx < 0) { continue; }
                    if (idx > 0 && matches(listProp[idx - 1], selector, ancestry)) {
                        return true;
                    }
                    if (idx < listProp.length - 1 && matches(listProp[idx + 1], selector, ancestry)) {
                        return true;
                    }
                }
            }
            return false;
        }

        /*
         * Determines if the given node is the nth child, determined by idxFn, which is given the containing list's length.
         */
        function nthChild(node, ancestry, idxFn) {
            var parent = ancestry[0], listProp, keys, i, l, idx;
            if (!parent) { return false; }
            keys = estraverse.VisitorKeys[parent.type];
            for (i = 0, l = keys.length; i < l; ++i) {
                listProp = parent[keys[i]];
                if (isArray(listProp)) {
                    idx = listProp.indexOf(node);
                    if (idx >= 0 && idx === idxFn(listProp.length)) { return true; }
                }
            }
            return false;
        }

        /*
         * For each selector node marked as a subject, find the portion of the selector that the subject must match.
         */
        function subjects(selector, ancestor) {
            var results, p;
            if (selector == null || typeof selector != 'object') { return []; }
            if (ancestor == null) { ancestor = selector; }
            results = selector.subject ? [ancestor] : [];
            for(p in selector) {
                if(!{}.hasOwnProperty.call(selector, p)) { continue; }
                [].push.apply(results, subjects(selector[p], p === 'left' ? selector[p] : ancestor));
            }
            return results;
        }

        /**
         * From a JS AST and a selector AST, collect all JS AST nodes that match the selector.
         */
        function match(ast, selector) {
            var ancestry = [], results = [], altSubjects, i, l, k, m;
            if (!selector) { return results; }
            altSubjects = subjects(selector);
            estraverse.traverse(ast, {
                enter: function (node, parent) {
                    if (parent != null) { ancestry.unshift(parent); }
                    if (matches(node, selector, ancestry)) {
                        if (altSubjects.length) {
                            for (i = 0, l = altSubjects.length; i < l; ++i) {
                                if (matches(node, altSubjects[i], ancestry)) { results.push(node); }
                                for (k = 0, m = ancestry.length; k < m; ++k) {
                                    if (matches(ancestry[k], altSubjects[i], ancestry.slice(k + 1))) {
                                        results.push(ancestry[k]);
                                    }
                                }
                            }
                        } else {
                            results.push(node);
                        }
                    }
                },
                leave: function () { ancestry.shift(); }
            });
            return results;
        }

        /**
         * Parse a selector string and return its AST.
         */
        function parse(selector) {
            return parser.parse(selector);
        }

        /**
         * Query the code AST using the selector string.
         */
        function query(ast, selector) {
            return match(ast, parse(selector));
        }

        query.parse = parse;
        query.match = match;
        query.matches = matches;
        return query.query = query;
    }


    if (typeof define === "function" && define.amd) {
        define(esqueryModule);
    } else if (typeof module !== 'undefined' && module.exports) {
        module.exports = esqueryModule();
    } else {
        this.esquery = esqueryModule();
    }

})();

},{"./parser":308,"estraverse":309}],308:[function(require,module,exports){
var result = (function(){
  /*
   * Generated by PEG.js 0.7.0.
   *
   * http://pegjs.majda.cz/
   */
  
  function quote(s) {
    /*
     * ECMA-262, 5th ed., 7.8.4: All characters may appear literally in a
     * string literal except for the closing quote character, backslash,
     * carriage return, line separator, paragraph separator, and line feed.
     * Any character may appear in the form of an escape sequence.
     *
     * For portability, we also escape escape all control and non-ASCII
     * characters. Note that "\0" and "\v" escape sequences are not used
     * because JSHint does not like the first and IE the second.
     */
     return '"' + s
      .replace(/\\/g, '\\\\')  // backslash
      .replace(/"/g, '\\"')    // closing quote character
      .replace(/\x08/g, '\\b') // backspace
      .replace(/\t/g, '\\t')   // horizontal tab
      .replace(/\n/g, '\\n')   // line feed
      .replace(/\f/g, '\\f')   // form feed
      .replace(/\r/g, '\\r')   // carriage return
      .replace(/[\x00-\x07\x0B\x0E-\x1F\x80-\uFFFF]/g, escape)
      + '"';
  }
  
  var result = {
    /*
     * Parses the input with a generated parser. If the parsing is successfull,
     * returns a value explicitly or implicitly specified by the grammar from
     * which the parser was generated (see |PEG.buildParser|). If the parsing is
     * unsuccessful, throws |PEG.parser.SyntaxError| describing the error.
     */
    parse: function(input, startRule) {
      var parseFunctions = {
        "start": parse_start,
        "_": parse__,
        "identifierName": parse_identifierName,
        "binaryOp": parse_binaryOp,
        "selectors": parse_selectors,
        "selector": parse_selector,
        "sequence": parse_sequence,
        "atom": parse_atom,
        "wildcard": parse_wildcard,
        "identifier": parse_identifier,
        "attr": parse_attr,
        "attrOps": parse_attrOps,
        "attrEqOps": parse_attrEqOps,
        "attrName": parse_attrName,
        "attrValue": parse_attrValue,
        "string": parse_string,
        "number": parse_number,
        "path": parse_path,
        "type": parse_type,
        "regex": parse_regex,
        "field": parse_field,
        "negation": parse_negation,
        "matches": parse_matches,
        "firstChild": parse_firstChild,
        "lastChild": parse_lastChild,
        "nthChild": parse_nthChild,
        "nthLastChild": parse_nthLastChild,
        "class": parse_class
      };
      
      if (startRule !== undefined) {
        if (parseFunctions[startRule] === undefined) {
          throw new Error("Invalid rule name: " + quote(startRule) + ".");
        }
      } else {
        startRule = "start";
      }
      
      var pos = 0;
      var reportFailures = 0;
      var rightmostFailuresPos = 0;
      var rightmostFailuresExpected = [];
      var cache = {};
      
      function padLeft(input, padding, length) {
        var result = input;
        
        var padLength = length - input.length;
        for (var i = 0; i < padLength; i++) {
          result = padding + result;
        }
        
        return result;
      }
      
      function escape(ch) {
        var charCode = ch.charCodeAt(0);
        var escapeChar;
        var length;
        
        if (charCode <= 0xFF) {
          escapeChar = 'x';
          length = 2;
        } else {
          escapeChar = 'u';
          length = 4;
        }
        
        return '\\' + escapeChar + padLeft(charCode.toString(16).toUpperCase(), '0', length);
      }
      
      function matchFailed(failure) {
        if (pos < rightmostFailuresPos) {
          return;
        }
        
        if (pos > rightmostFailuresPos) {
          rightmostFailuresPos = pos;
          rightmostFailuresExpected = [];
        }
        
        rightmostFailuresExpected.push(failure);
      }
      
      function parse_start() {
        var cacheKey = "start@" + pos;
        var cachedResult = cache[cacheKey];
        if (cachedResult) {
          pos = cachedResult.nextPos;
          return cachedResult.result;
        }
        
        var result0, result1, result2;
        var pos0, pos1;
        
        pos0 = pos;
        pos1 = pos;
        result0 = parse__();
        if (result0 !== null) {
          result1 = parse_selectors();
          if (result1 !== null) {
            result2 = parse__();
            if (result2 !== null) {
              result0 = [result0, result1, result2];
            } else {
              result0 = null;
              pos = pos1;
            }
          } else {
            result0 = null;
            pos = pos1;
          }
        } else {
          result0 = null;
          pos = pos1;
        }
        if (result0 !== null) {
          result0 = (function(offset, ss) { return ss.length === 1 ? ss[0] : { type: 'matches', selectors: ss }; })(pos0, result0[1]);
        }
        if (result0 === null) {
          pos = pos0;
        }
        if (result0 === null) {
          pos0 = pos;
          result0 = parse__();
          if (result0 !== null) {
            result0 = (function(offset) { return void 0; })(pos0);
          }
          if (result0 === null) {
            pos = pos0;
          }
        }
        
        cache[cacheKey] = {
          nextPos: pos,
          result:  result0
        };
        return result0;
      }
      
      function parse__() {
        var cacheKey = "_@" + pos;
        var cachedResult = cache[cacheKey];
        if (cachedResult) {
          pos = cachedResult.nextPos;
          return cachedResult.result;
        }
        
        var result0, result1;
        
        result0 = [];
        if (input.charCodeAt(pos) === 32) {
          result1 = " ";
          pos++;
        } else {
          result1 = null;
          if (reportFailures === 0) {
            matchFailed("\" \"");
          }
        }
        while (result1 !== null) {
          result0.push(result1);
          if (input.charCodeAt(pos) === 32) {
            result1 = " ";
            pos++;
          } else {
            result1 = null;
            if (reportFailures === 0) {
              matchFailed("\" \"");
            }
          }
        }
        
        cache[cacheKey] = {
          nextPos: pos,
          result:  result0
        };
        return result0;
      }
      
      function parse_identifierName() {
        var cacheKey = "identifierName@" + pos;
        var cachedResult = cache[cacheKey];
        if (cachedResult) {
          pos = cachedResult.nextPos;
          return cachedResult.result;
        }
        
        var result0, result1;
        var pos0;
        
        pos0 = pos;
        if (/^[^ [\],():#!=><~+.]/.test(input.charAt(pos))) {
          result1 = input.charAt(pos);
          pos++;
        } else {
          result1 = null;
          if (reportFailures === 0) {
            matchFailed("[^ [\\],():#!=><~+.]");
          }
        }
        if (result1 !== null) {
          result0 = [];
          while (result1 !== null) {
            result0.push(result1);
            if (/^[^ [\],():#!=><~+.]/.test(input.charAt(pos))) {
              result1 = input.charAt(pos);
              pos++;
            } else {
              result1 = null;
              if (reportFailures === 0) {
                matchFailed("[^ [\\],():#!=><~+.]");
              }
            }
          }
        } else {
          result0 = null;
        }
        if (result0 !== null) {
          result0 = (function(offset, i) { return i.join(''); })(pos0, result0);
        }
        if (result0 === null) {
          pos = pos0;
        }
        
        cache[cacheKey] = {
          nextPos: pos,
          result:  result0
        };
        return result0;
      }
      
      function parse_binaryOp() {
        var cacheKey = "binaryOp@" + pos;
        var cachedResult = cache[cacheKey];
        if (cachedResult) {
          pos = cachedResult.nextPos;
          return cachedResult.result;
        }
        
        var result0, result1, result2;
        var pos0, pos1;
        
        pos0 = pos;
        pos1 = pos;
        result0 = parse__();
        if (result0 !== null) {
          if (input.charCodeAt(pos) === 62) {
            result1 = ">";
            pos++;
          } else {
            result1 = null;
            if (reportFailures === 0) {
              matchFailed("\">\"");
            }
          }
          if (result1 !== null) {
            result2 = parse__();
            if (result2 !== null) {
              result0 = [result0, result1, result2];
            } else {
              result0 = null;
              pos = pos1;
            }
          } else {
            result0 = null;
            pos = pos1;
          }
        } else {
          result0 = null;
          pos = pos1;
        }
        if (result0 !== null) {
          result0 = (function(offset) { return 'child'; })(pos0);
        }
        if (result0 === null) {
          pos = pos0;
        }
        if (result0 === null) {
          pos0 = pos;
          pos1 = pos;
          result0 = parse__();
          if (result0 !== null) {
            if (input.charCodeAt(pos) === 126) {
              result1 = "~";
              pos++;
            } else {
              result1 = null;
              if (reportFailures === 0) {
                matchFailed("\"~\"");
              }
            }
            if (result1 !== null) {
              result2 = parse__();
              if (result2 !== null) {
                result0 = [result0, result1, result2];
              } else {
                result0 = null;
                pos = pos1;
              }
            } else {
              result0 = null;
              pos = pos1;
            }
          } else {
            result0 = null;
            pos = pos1;
          }
          if (result0 !== null) {
            result0 = (function(offset) { return 'sibling'; })(pos0);
          }
          if (result0 === null) {
            pos = pos0;
          }
          if (result0 === null) {
            pos0 = pos;
            pos1 = pos;
            result0 = parse__();
            if (result0 !== null) {
              if (input.charCodeAt(pos) === 43) {
                result1 = "+";
                pos++;
              } else {
                result1 = null;
                if (reportFailures === 0) {
                  matchFailed("\"+\"");
                }
              }
              if (result1 !== null) {
                result2 = parse__();
                if (result2 !== null) {
                  result0 = [result0, result1, result2];
                } else {
                  result0 = null;
                  pos = pos1;
                }
              } else {
                result0 = null;
                pos = pos1;
              }
            } else {
              result0 = null;
              pos = pos1;
            }
            if (result0 !== null) {
              result0 = (function(offset) { return 'adjacent'; })(pos0);
            }
            if (result0 === null) {
              pos = pos0;
            }
            if (result0 === null) {
              pos0 = pos;
              pos1 = pos;
              if (input.charCodeAt(pos) === 32) {
                result0 = " ";
                pos++;
              } else {
                result0 = null;
                if (reportFailures === 0) {
                  matchFailed("\" \"");
                }
              }
              if (result0 !== null) {
                result1 = parse__();
                if (result1 !== null) {
                  result0 = [result0, result1];
                } else {
                  result0 = null;
                  pos = pos1;
                }
              } else {
                result0 = null;
                pos = pos1;
              }
              if (result0 !== null) {
                result0 = (function(offset) { return 'descendant'; })(pos0);
              }
              if (result0 === null) {
                pos = pos0;
              }
            }
          }
        }
        
        cache[cacheKey] = {
          nextPos: pos,
          result:  result0
        };
        return result0;
      }
      
      function parse_selectors() {
        var cacheKey = "selectors@" + pos;
        var cachedResult = cache[cacheKey];
        if (cachedResult) {
          pos = cachedResult.nextPos;
          return cachedResult.result;
        }
        
        var result0, result1, result2, result3, result4, result5;
        var pos0, pos1, pos2;
        
        pos0 = pos;
        pos1 = pos;
        result0 = parse_selector();
        if (result0 !== null) {
          result1 = [];
          pos2 = pos;
          result2 = parse__();
          if (result2 !== null) {
            if (input.charCodeAt(pos) === 44) {
              result3 = ",";
              pos++;
            } else {
              result3 = null;
              if (reportFailures === 0) {
                matchFailed("\",\"");
              }
            }
            if (result3 !== null) {
              result4 = parse__();
              if (result4 !== null) {
                result5 = parse_selector();
                if (result5 !== null) {
                  result2 = [result2, result3, result4, result5];
                } else {
                  result2 = null;
                  pos = pos2;
                }
              } else {
                result2 = null;
                pos = pos2;
              }
            } else {
              result2 = null;
              pos = pos2;
            }
          } else {
            result2 = null;
            pos = pos2;
          }
          while (result2 !== null) {
            result1.push(result2);
            pos2 = pos;
            result2 = parse__();
            if (result2 !== null) {
              if (input.charCodeAt(pos) === 44) {
                result3 = ",";
                pos++;
              } else {
                result3 = null;
                if (reportFailures === 0) {
                  matchFailed("\",\"");
                }
              }
              if (result3 !== null) {
                result4 = parse__();
                if (result4 !== null) {
                  result5 = parse_selector();
                  if (result5 !== null) {
                    result2 = [result2, result3, result4, result5];
                  } else {
                    result2 = null;
                    pos = pos2;
                  }
                } else {
                  result2 = null;
                  pos = pos2;
                }
              } else {
                result2 = null;
                pos = pos2;
              }
            } else {
              result2 = null;
              pos = pos2;
            }
          }
          if (result1 !== null) {
            result0 = [result0, result1];
          } else {
            result0 = null;
            pos = pos1;
          }
        } else {
          result0 = null;
          pos = pos1;
        }
        if (result0 !== null) {
          result0 = (function(offset, s, ss) {
          return [s].concat(ss.map(function (s) { return s[3]; }));
        })(pos0, result0[0], result0[1]);
        }
        if (result0 === null) {
          pos = pos0;
        }
        
        cache[cacheKey] = {
          nextPos: pos,
          result:  result0
        };
        return result0;
      }
      
      function parse_selector() {
        var cacheKey = "selector@" + pos;
        var cachedResult = cache[cacheKey];
        if (cachedResult) {
          pos = cachedResult.nextPos;
          return cachedResult.result;
        }
        
        var result0, result1, result2, result3;
        var pos0, pos1, pos2;
        
        pos0 = pos;
        pos1 = pos;
        result0 = parse_sequence();
        if (result0 !== null) {
          result1 = [];
          pos2 = pos;
          result2 = parse_binaryOp();
          if (result2 !== null) {
            result3 = parse_sequence();
            if (result3 !== null) {
              result2 = [result2, result3];
            } else {
              result2 = null;
              pos = pos2;
            }
          } else {
            result2 = null;
            pos = pos2;
          }
          while (result2 !== null) {
            result1.push(result2);
            pos2 = pos;
            result2 = parse_binaryOp();
            if (result2 !== null) {
              result3 = parse_sequence();
              if (result3 !== null) {
                result2 = [result2, result3];
              } else {
                result2 = null;
                pos = pos2;
              }
            } else {
              result2 = null;
              pos = pos2;
            }
          }
          if (result1 !== null) {
            result0 = [result0, result1];
          } else {
            result0 = null;
            pos = pos1;
          }
        } else {
          result0 = null;
          pos = pos1;
        }
        if (result0 !== null) {
          result0 = (function(offset, a, ops) {
            return ops.reduce(function (memo, rhs) {
              return { type: rhs[0], left: memo, right: rhs[1] };
            }, a);
          })(pos0, result0[0], result0[1]);
        }
        if (result0 === null) {
          pos = pos0;
        }
        
        cache[cacheKey] = {
          nextPos: pos,
          result:  result0
        };
        return result0;
      }
      
      function parse_sequence() {
        var cacheKey = "sequence@" + pos;
        var cachedResult = cache[cacheKey];
        if (cachedResult) {
          pos = cachedResult.nextPos;
          return cachedResult.result;
        }
        
        var result0, result1, result2;
        var pos0, pos1;
        
        pos0 = pos;
        pos1 = pos;
        if (input.charCodeAt(pos) === 33) {
          result0 = "!";
          pos++;
        } else {
          result0 = null;
          if (reportFailures === 0) {
            matchFailed("\"!\"");
          }
        }
        result0 = result0 !== null ? result0 : "";
        if (result0 !== null) {
          result2 = parse_atom();
          if (result2 !== null) {
            result1 = [];
            while (result2 !== null) {
              result1.push(result2);
              result2 = parse_atom();
            }
          } else {
            result1 = null;
          }
          if (result1 !== null) {
            result0 = [result0, result1];
          } else {
            result0 = null;
            pos = pos1;
          }
        } else {
          result0 = null;
          pos = pos1;
        }
        if (result0 !== null) {
          result0 = (function(offset, subject, as) {
            var b = as.length === 1 ? as[0] : { type: 'compound', selectors: as };
            if(subject) b.subject = true;
            return b;
          })(pos0, result0[0], result0[1]);
        }
        if (result0 === null) {
          pos = pos0;
        }
        
        cache[cacheKey] = {
          nextPos: pos,
          result:  result0
        };
        return result0;
      }
      
      function parse_atom() {
        var cacheKey = "atom@" + pos;
        var cachedResult = cache[cacheKey];
        if (cachedResult) {
          pos = cachedResult.nextPos;
          return cachedResult.result;
        }
        
        var result0;
        
        result0 = parse_wildcard();
        if (result0 === null) {
          result0 = parse_identifier();
          if (result0 === null) {
            result0 = parse_attr();
            if (result0 === null) {
              result0 = parse_field();
              if (result0 === null) {
                result0 = parse_negation();
                if (result0 === null) {
                  result0 = parse_matches();
                  if (result0 === null) {
                    result0 = parse_firstChild();
                    if (result0 === null) {
                      result0 = parse_lastChild();
                      if (result0 === null) {
                        result0 = parse_nthChild();
                        if (result0 === null) {
                          result0 = parse_nthLastChild();
                          if (result0 === null) {
                            result0 = parse_class();
                          }
                        }
                      }
                    }
                  }
                }
              }
            }
          }
        }
        
        cache[cacheKey] = {
          nextPos: pos,
          result:  result0
        };
        return result0;
      }
      
      function parse_wildcard() {
        var cacheKey = "wildcard@" + pos;
        var cachedResult = cache[cacheKey];
        if (cachedResult) {
          pos = cachedResult.nextPos;
          return cachedResult.result;
        }
        
        var result0;
        var pos0;
        
        pos0 = pos;
        if (input.charCodeAt(pos) === 42) {
          result0 = "*";
          pos++;
        } else {
          result0 = null;
          if (reportFailures === 0) {
            matchFailed("\"*\"");
          }
        }
        if (result0 !== null) {
          result0 = (function(offset, a) { return { type: 'wildcard', value: a }; })(pos0, result0);
        }
        if (result0 === null) {
          pos = pos0;
        }
        
        cache[cacheKey] = {
          nextPos: pos,
          result:  result0
        };
        return result0;
      }
      
      function parse_identifier() {
        var cacheKey = "identifier@" + pos;
        var cachedResult = cache[cacheKey];
        if (cachedResult) {
          pos = cachedResult.nextPos;
          return cachedResult.result;
        }
        
        var result0, result1;
        var pos0, pos1;
        
        pos0 = pos;
        pos1 = pos;
        if (input.charCodeAt(pos) === 35) {
          result0 = "#";
          pos++;
        } else {
          result0 = null;
          if (reportFailures === 0) {
            matchFailed("\"#\"");
          }
        }
        result0 = result0 !== null ? result0 : "";
        if (result0 !== null) {
          result1 = parse_identifierName();
          if (result1 !== null) {
            result0 = [result0, result1];
          } else {
            result0 = null;
            pos = pos1;
          }
        } else {
          result0 = null;
          pos = pos1;
        }
        if (result0 !== null) {
          result0 = (function(offset, i) { return { type: 'identifier', value: i }; })(pos0, result0[1]);
        }
        if (result0 === null) {
          pos = pos0;
        }
        
        cache[cacheKey] = {
          nextPos: pos,
          result:  result0
        };
        return result0;
      }
      
      function parse_attr() {
        var cacheKey = "attr@" + pos;
        var cachedResult = cache[cacheKey];
        if (cachedResult) {
          pos = cachedResult.nextPos;
          return cachedResult.result;
        }
        
        var result0, result1, result2, result3, result4;
        var pos0, pos1;
        
        pos0 = pos;
        pos1 = pos;
        if (input.charCodeAt(pos) === 91) {
          result0 = "[";
          pos++;
        } else {
          result0 = null;
          if (reportFailures === 0) {
            matchFailed("\"[\"");
          }
        }
        if (result0 !== null) {
          result1 = parse__();
          if (result1 !== null) {
            result2 = parse_attrValue();
            if (result2 !== null) {
              result3 = parse__();
              if (result3 !== null) {
                if (input.charCodeAt(pos) === 93) {
                  result4 = "]";
                  pos++;
                } else {
                  result4 = null;
                  if (reportFailures === 0) {
                    matchFailed("\"]\"");
                  }
                }
                if (result4 !== null) {
                  result0 = [result0, result1, result2, result3, result4];
                } else {
                  result0 = null;
                  pos = pos1;
                }
              } else {
                result0 = null;
                pos = pos1;
              }
            } else {
              result0 = null;
              pos = pos1;
            }
          } else {
            result0 = null;
            pos = pos1;
          }
        } else {
          result0 = null;
          pos = pos1;
        }
        if (result0 !== null) {
          result0 = (function(offset, v) { return v; })(pos0, result0[2]);
        }
        if (result0 === null) {
          pos = pos0;
        }
        
        cache[cacheKey] = {
          nextPos: pos,
          result:  result0
        };
        return result0;
      }
      
      function parse_attrOps() {
        var cacheKey = "attrOps@" + pos;
        var cachedResult = cache[cacheKey];
        if (cachedResult) {
          pos = cachedResult.nextPos;
          return cachedResult.result;
        }
        
        var result0, result1;
        var pos0, pos1;
        
        pos0 = pos;
        pos1 = pos;
        if (/^[><!]/.test(input.charAt(pos))) {
          result0 = input.charAt(pos);
          pos++;
        } else {
          result0 = null;
          if (reportFailures === 0) {
            matchFailed("[><!]");
          }
        }
        result0 = result0 !== null ? result0 : "";
        if (result0 !== null) {
          if (input.charCodeAt(pos) === 61) {
            result1 = "=";
            pos++;
          } else {
            result1 = null;
            if (reportFailures === 0) {
              matchFailed("\"=\"");
            }
          }
          if (result1 !== null) {
            result0 = [result0, result1];
          } else {
            result0 = null;
            pos = pos1;
          }
        } else {
          result0 = null;
          pos = pos1;
        }
        if (result0 !== null) {
          result0 = (function(offset, a) { return a + '='; })(pos0, result0[0]);
        }
        if (result0 === null) {
          pos = pos0;
        }
        if (result0 === null) {
          if (/^[><]/.test(input.charAt(pos))) {
            result0 = input.charAt(pos);
            pos++;
          } else {
            result0 = null;
            if (reportFailures === 0) {
              matchFailed("[><]");
            }
          }
        }
        
        cache[cacheKey] = {
          nextPos: pos,
          result:  result0
        };
        return result0;
      }
      
      function parse_attrEqOps() {
        var cacheKey = "attrEqOps@" + pos;
        var cachedResult = cache[cacheKey];
        if (cachedResult) {
          pos = cachedResult.nextPos;
          return cachedResult.result;
        }
        
        var result0, result1;
        var pos0, pos1;
        
        pos0 = pos;
        pos1 = pos;
        if (input.charCodeAt(pos) === 33) {
          result0 = "!";
          pos++;
        } else {
          result0 = null;
          if (reportFailures === 0) {
            matchFailed("\"!\"");
          }
        }
        result0 = result0 !== null ? result0 : "";
        if (result0 !== null) {
          if (input.charCodeAt(pos) === 61) {
            result1 = "=";
            pos++;
          } else {
            result1 = null;
            if (reportFailures === 0) {
              matchFailed("\"=\"");
            }
          }
          if (result1 !== null) {
            result0 = [result0, result1];
          } else {
            result0 = null;
            pos = pos1;
          }
        } else {
          result0 = null;
          pos = pos1;
        }
        if (result0 !== null) {
          result0 = (function(offset, a) { return a + '='; })(pos0, result0[0]);
        }
        if (result0 === null) {
          pos = pos0;
        }
        
        cache[cacheKey] = {
          nextPos: pos,
          result:  result0
        };
        return result0;
      }
      
      function parse_attrName() {
        var cacheKey = "attrName@" + pos;
        var cachedResult = cache[cacheKey];
        if (cachedResult) {
          pos = cachedResult.nextPos;
          return cachedResult.result;
        }
        
        var result0, result1;
        var pos0;
        
        pos0 = pos;
        result1 = parse_identifierName();
        if (result1 === null) {
          if (input.charCodeAt(pos) === 46) {
            result1 = ".";
            pos++;
          } else {
            result1 = null;
            if (reportFailures === 0) {
              matchFailed("\".\"");
            }
          }
        }
        if (result1 !== null) {
          result0 = [];
          while (result1 !== null) {
            result0.push(result1);
            result1 = parse_identifierName();
            if (result1 === null) {
              if (input.charCodeAt(pos) === 46) {
                result1 = ".";
                pos++;
              } else {
                result1 = null;
                if (reportFailures === 0) {
                  matchFailed("\".\"");
                }
              }
            }
          }
        } else {
          result0 = null;
        }
        if (result0 !== null) {
          result0 = (function(offset, i) { return i.join(''); })(pos0, result0);
        }
        if (result0 === null) {
          pos = pos0;
        }
        
        cache[cacheKey] = {
          nextPos: pos,
          result:  result0
        };
        return result0;
      }
      
      function parse_attrValue() {
        var cacheKey = "attrValue@" + pos;
        var cachedResult = cache[cacheKey];
        if (cachedResult) {
          pos = cachedResult.nextPos;
          return cachedResult.result;
        }
        
        var result0, result1, result2, result3, result4;
        var pos0, pos1;
        
        pos0 = pos;
        pos1 = pos;
        result0 = parse_attrName();
        if (result0 !== null) {
          result1 = parse__();
          if (result1 !== null) {
            result2 = parse_attrEqOps();
            if (result2 !== null) {
              result3 = parse__();
              if (result3 !== null) {
                result4 = parse_type();
                if (result4 === null) {
                  result4 = parse_regex();
                }
                if (result4 !== null) {
                  result0 = [result0, result1, result2, result3, result4];
                } else {
                  result0 = null;
                  pos = pos1;
                }
              } else {
                result0 = null;
                pos = pos1;
              }
            } else {
              result0 = null;
              pos = pos1;
            }
          } else {
            result0 = null;
            pos = pos1;
          }
        } else {
          result0 = null;
          pos = pos1;
        }
        if (result0 !== null) {
          result0 = (function(offset, name, op, value) {
              return { type: 'attribute', name: name, operator: op, value: value };
            })(pos0, result0[0], result0[2], result0[4]);
        }
        if (result0 === null) {
          pos = pos0;
        }
        if (result0 === null) {
          pos0 = pos;
          pos1 = pos;
          result0 = parse_attrName();
          if (result0 !== null) {
            result1 = parse__();
            if (result1 !== null) {
              result2 = parse_attrOps();
              if (result2 !== null) {
                result3 = parse__();
                if (result3 !== null) {
                  result4 = parse_string();
                  if (result4 === null) {
                    result4 = parse_number();
                    if (result4 === null) {
                      result4 = parse_path();
                    }
                  }
                  if (result4 !== null) {
                    result0 = [result0, result1, result2, result3, result4];
                  } else {
                    result0 = null;
                    pos = pos1;
                  }
                } else {
                  result0 = null;
                  pos = pos1;
                }
              } else {
                result0 = null;
                pos = pos1;
              }
            } else {
              result0 = null;
              pos = pos1;
            }
          } else {
            result0 = null;
            pos = pos1;
          }
          if (result0 !== null) {
            result0 = (function(offset, name, op, value) {
                return { type: 'attribute', name: name, operator: op, value: value };
              })(pos0, result0[0], result0[2], result0[4]);
          }
          if (result0 === null) {
            pos = pos0;
          }
          if (result0 === null) {
            pos0 = pos;
            result0 = parse_attrName();
            if (result0 !== null) {
              result0 = (function(offset, name) { return { type: 'attribute', name: name }; })(pos0, result0);
            }
            if (result0 === null) {
              pos = pos0;
            }
          }
        }
        
        cache[cacheKey] = {
          nextPos: pos,
          result:  result0
        };
        return result0;
      }
      
      function parse_string() {
        var cacheKey = "string@" + pos;
        var cachedResult = cache[cacheKey];
        if (cachedResult) {
          pos = cachedResult.nextPos;
          return cachedResult.result;
        }
        
        var result0, result1, result2, result3;
        var pos0, pos1, pos2, pos3;
        
        pos0 = pos;
        pos1 = pos;
        if (input.charCodeAt(pos) === 34) {
          result0 = "\"";
          pos++;
        } else {
          result0 = null;
          if (reportFailures === 0) {
            matchFailed("\"\\\"\"");
          }
        }
        if (result0 !== null) {
          result1 = [];
          if (/^[^\\"]/.test(input.charAt(pos))) {
            result2 = input.charAt(pos);
            pos++;
          } else {
            result2 = null;
            if (reportFailures === 0) {
              matchFailed("[^\\\\\"]");
            }
          }
          if (result2 === null) {
            pos2 = pos;
            pos3 = pos;
            if (input.charCodeAt(pos) === 92) {
              result2 = "\\";
              pos++;
            } else {
              result2 = null;
              if (reportFailures === 0) {
                matchFailed("\"\\\\\"");
              }
            }
            if (result2 !== null) {
              if (input.length > pos) {
                result3 = input.charAt(pos);
                pos++;
              } else {
                result3 = null;
                if (reportFailures === 0) {
                  matchFailed("any character");
                }
              }
              if (result3 !== null) {
                result2 = [result2, result3];
              } else {
                result2 = null;
                pos = pos3;
              }
            } else {
              result2 = null;
              pos = pos3;
            }
            if (result2 !== null) {
              result2 = (function(offset, a, b) { return a + b; })(pos2, result2[0], result2[1]);
            }
            if (result2 === null) {
              pos = pos2;
            }
          }
          while (result2 !== null) {
            result1.push(result2);
            if (/^[^\\"]/.test(input.charAt(pos))) {
              result2 = input.charAt(pos);
              pos++;
            } else {
              result2 = null;
              if (reportFailures === 0) {
                matchFailed("[^\\\\\"]");
              }
            }
            if (result2 === null) {
              pos2 = pos;
              pos3 = pos;
              if (input.charCodeAt(pos) === 92) {
                result2 = "\\";
                pos++;
              } else {
                result2 = null;
                if (reportFailures === 0) {
                  matchFailed("\"\\\\\"");
                }
              }
              if (result2 !== null) {
                if (input.length > pos) {
                  result3 = input.charAt(pos);
                  pos++;
                } else {
                  result3 = null;
                  if (reportFailures === 0) {
                    matchFailed("any character");
                  }
                }
                if (result3 !== null) {
                  result2 = [result2, result3];
                } else {
                  result2 = null;
                  pos = pos3;
                }
              } else {
                result2 = null;
                pos = pos3;
              }
              if (result2 !== null) {
                result2 = (function(offset, a, b) { return a + b; })(pos2, result2[0], result2[1]);
              }
              if (result2 === null) {
                pos = pos2;
              }
            }
          }
          if (result1 !== null) {
            if (input.charCodeAt(pos) === 34) {
              result2 = "\"";
              pos++;
            } else {
              result2 = null;
              if (reportFailures === 0) {
                matchFailed("\"\\\"\"");
              }
            }
            if (result2 !== null) {
              result0 = [result0, result1, result2];
            } else {
              result0 = null;
              pos = pos1;
            }
          } else {
            result0 = null;
            pos = pos1;
          }
        } else {
          result0 = null;
          pos = pos1;
        }
        if (result0 !== null) {
          result0 = (function(offset, d) {
                return { type: 'literal', value: strUnescape(d.join('')) };
              })(pos0, result0[1]);
        }
        if (result0 === null) {
          pos = pos0;
        }
        if (result0 === null) {
          pos0 = pos;
          pos1 = pos;
          if (input.charCodeAt(pos) === 39) {
            result0 = "'";
            pos++;
          } else {
            result0 = null;
            if (reportFailures === 0) {
              matchFailed("\"'\"");
            }
          }
          if (result0 !== null) {
            result1 = [];
            if (/^[^\\']/.test(input.charAt(pos))) {
              result2 = input.charAt(pos);
              pos++;
            } else {
              result2 = null;
              if (reportFailures === 0) {
                matchFailed("[^\\\\']");
              }
            }
            if (result2 === null) {
              pos2 = pos;
              pos3 = pos;
              if (input.charCodeAt(pos) === 92) {
                result2 = "\\";
                pos++;
              } else {
                result2 = null;
                if (reportFailures === 0) {
                  matchFailed("\"\\\\\"");
                }
              }
              if (result2 !== null) {
                if (input.length > pos) {
                  result3 = input.charAt(pos);
                  pos++;
                } else {
                  result3 = null;
                  if (reportFailures === 0) {
                    matchFailed("any character");
                  }
                }
                if (result3 !== null) {
                  result2 = [result2, result3];
                } else {
                  result2 = null;
                  pos = pos3;
                }
              } else {
                result2 = null;
                pos = pos3;
              }
              if (result2 !== null) {
                result2 = (function(offset, a, b) { return a + b; })(pos2, result2[0], result2[1]);
              }
              if (result2 === null) {
                pos = pos2;
              }
            }
            while (result2 !== null) {
              result1.push(result2);
              if (/^[^\\']/.test(input.charAt(pos))) {
                result2 = input.charAt(pos);
                pos++;
              } else {
                result2 = null;
                if (reportFailures === 0) {
                  matchFailed("[^\\\\']");
                }
              }
              if (result2 === null) {
                pos2 = pos;
                pos3 = pos;
                if (input.charCodeAt(pos) === 92) {
                  result2 = "\\";
                  pos++;
                } else {
                  result2 = null;
                  if (reportFailures === 0) {
                    matchFailed("\"\\\\\"");
                  }
                }
                if (result2 !== null) {
                  if (input.length > pos) {
                    result3 = input.charAt(pos);
                    pos++;
                  } else {
                    result3 = null;
                    if (reportFailures === 0) {
                      matchFailed("any character");
                    }
                  }
                  if (result3 !== null) {
                    result2 = [result2, result3];
                  } else {
                    result2 = null;
                    pos = pos3;
                  }
                } else {
                  result2 = null;
                  pos = pos3;
                }
                if (result2 !== null) {
                  result2 = (function(offset, a, b) { return a + b; })(pos2, result2[0], result2[1]);
                }
                if (result2 === null) {
                  pos = pos2;
                }
              }
            }
            if (result1 !== null) {
              if (input.charCodeAt(pos) === 39) {
                result2 = "'";
                pos++;
              } else {
                result2 = null;
                if (reportFailures === 0) {
                  matchFailed("\"'\"");
                }
              }
              if (result2 !== null) {
                result0 = [result0, result1, result2];
              } else {
                result0 = null;
                pos = pos1;
              }
            } else {
              result0 = null;
              pos = pos1;
            }
          } else {
            result0 = null;
            pos = pos1;
          }
          if (result0 !== null) {
            result0 = (function(offset, d) {
                  return { type: 'literal', value: strUnescape(d.join('')) };
                })(pos0, result0[1]);
          }
          if (result0 === null) {
            pos = pos0;
          }
        }
        
        cache[cacheKey] = {
          nextPos: pos,
          result:  result0
        };
        return result0;
      }
      
      function parse_number() {
        var cacheKey = "number@" + pos;
        var cachedResult = cache[cacheKey];
        if (cachedResult) {
          pos = cachedResult.nextPos;
          return cachedResult.result;
        }
        
        var result0, result1, result2;
        var pos0, pos1, pos2;
        
        pos0 = pos;
        pos1 = pos;
        pos2 = pos;
        result0 = [];
        if (/^[0-9]/.test(input.charAt(pos))) {
          result1 = input.charAt(pos);
          pos++;
        } else {
          result1 = null;
          if (reportFailures === 0) {
            matchFailed("[0-9]");
          }
        }
        while (result1 !== null) {
          result0.push(result1);
          if (/^[0-9]/.test(input.charAt(pos))) {
            result1 = input.charAt(pos);
            pos++;
          } else {
            result1 = null;
            if (reportFailures === 0) {
              matchFailed("[0-9]");
            }
          }
        }
        if (result0 !== null) {
          if (input.charCodeAt(pos) === 46) {
            result1 = ".";
            pos++;
          } else {
            result1 = null;
            if (reportFailures === 0) {
              matchFailed("\".\"");
            }
          }
          if (result1 !== null) {
            result0 = [result0, result1];
          } else {
            result0 = null;
            pos = pos2;
          }
        } else {
          result0 = null;
          pos = pos2;
        }
        result0 = result0 !== null ? result0 : "";
        if (result0 !== null) {
          if (/^[0-9]/.test(input.charAt(pos))) {
            result2 = input.charAt(pos);
            pos++;
          } else {
            result2 = null;
            if (reportFailures === 0) {
              matchFailed("[0-9]");
            }
          }
          if (result2 !== null) {
            result1 = [];
            while (result2 !== null) {
              result1.push(result2);
              if (/^[0-9]/.test(input.charAt(pos))) {
                result2 = input.charAt(pos);
                pos++;
              } else {
                result2 = null;
                if (reportFailures === 0) {
                  matchFailed("[0-9]");
                }
              }
            }
          } else {
            result1 = null;
          }
          if (result1 !== null) {
            result0 = [result0, result1];
          } else {
            result0 = null;
            pos = pos1;
          }
        } else {
          result0 = null;
          pos = pos1;
        }
        if (result0 !== null) {
          result0 = (function(offset, a, b) {
                return { type: 'literal', value: parseFloat((a ? a.join('') : '') + b.join('')) };
              })(pos0, result0[0], result0[1]);
        }
        if (result0 === null) {
          pos = pos0;
        }
        
        cache[cacheKey] = {
          nextPos: pos,
          result:  result0
        };
        return result0;
      }
      
      function parse_path() {
        var cacheKey = "path@" + pos;
        var cachedResult = cache[cacheKey];
        if (cachedResult) {
          pos = cachedResult.nextPos;
          return cachedResult.result;
        }
        
        var result0;
        var pos0;
        
        pos0 = pos;
        result0 = parse_identifierName();
        if (result0 !== null) {
          result0 = (function(offset, i) { return { type: 'literal', value: i }; })(pos0, result0);
        }
        if (result0 === null) {
          pos = pos0;
        }
        
        cache[cacheKey] = {
          nextPos: pos,
          result:  result0
        };
        return result0;
      }
      
      function parse_type() {
        var cacheKey = "type@" + pos;
        var cachedResult = cache[cacheKey];
        if (cachedResult) {
          pos = cachedResult.nextPos;
          return cachedResult.result;
        }
        
        var result0, result1, result2, result3, result4;
        var pos0, pos1;
        
        pos0 = pos;
        pos1 = pos;
        if (input.substr(pos, 5) === "type(") {
          result0 = "type(";
          pos += 5;
        } else {
          result0 = null;
          if (reportFailures === 0) {
            matchFailed("\"type(\"");
          }
        }
        if (result0 !== null) {
          result1 = parse__();
          if (result1 !== null) {
            if (/^[^ )]/.test(input.charAt(pos))) {
              result3 = input.charAt(pos);
              pos++;
            } else {
              result3 = null;
              if (reportFailures === 0) {
                matchFailed("[^ )]");
              }
            }
            if (result3 !== null) {
              result2 = [];
              while (result3 !== null) {
                result2.push(result3);
                if (/^[^ )]/.test(input.charAt(pos))) {
                  result3 = input.charAt(pos);
                  pos++;
                } else {
                  result3 = null;
                  if (reportFailures === 0) {
                    matchFailed("[^ )]");
                  }
                }
              }
            } else {
              result2 = null;
            }
            if (result2 !== null) {
              result3 = parse__();
              if (result3 !== null) {
                if (input.charCodeAt(pos) === 41) {
                  result4 = ")";
                  pos++;
                } else {
                  result4 = null;
                  if (reportFailures === 0) {
                    matchFailed("\")\"");
                  }
                }
                if (result4 !== null) {
                  result0 = [result0, result1, result2, result3, result4];
                } else {
                  result0 = null;
                  pos = pos1;
                }
              } else {
                result0 = null;
                pos = pos1;
              }
            } else {
              result0 = null;
              pos = pos1;
            }
          } else {
            result0 = null;
            pos = pos1;
          }
        } else {
          result0 = null;
          pos = pos1;
        }
        if (result0 !== null) {
          result0 = (function(offset, t) { return { type: 'type', value: t.join('') }; })(pos0, result0[2]);
        }
        if (result0 === null) {
          pos = pos0;
        }
        
        cache[cacheKey] = {
          nextPos: pos,
          result:  result0
        };
        return result0;
      }
      
      function parse_regex() {
        var cacheKey = "regex@" + pos;
        var cachedResult = cache[cacheKey];
        if (cachedResult) {
          pos = cachedResult.nextPos;
          return cachedResult.result;
        }
        
        var result0, result1, result2;
        var pos0, pos1;
        
        pos0 = pos;
        pos1 = pos;
        if (input.charCodeAt(pos) === 47) {
          result0 = "/";
          pos++;
        } else {
          result0 = null;
          if (reportFailures === 0) {
            matchFailed("\"/\"");
          }
        }
        if (result0 !== null) {
          if (/^[^\/]/.test(input.charAt(pos))) {
            result2 = input.charAt(pos);
            pos++;
          } else {
            result2 = null;
            if (reportFailures === 0) {
              matchFailed("[^\\/]");
            }
          }
          if (result2 !== null) {
            result1 = [];
            while (result2 !== null) {
              result1.push(result2);
              if (/^[^\/]/.test(input.charAt(pos))) {
                result2 = input.charAt(pos);
                pos++;
              } else {
                result2 = null;
                if (reportFailures === 0) {
                  matchFailed("[^\\/]");
                }
              }
            }
          } else {
            result1 = null;
          }
          if (result1 !== null) {
            if (input.charCodeAt(pos) === 47) {
              result2 = "/";
              pos++;
            } else {
              result2 = null;
              if (reportFailures === 0) {
                matchFailed("\"/\"");
              }
            }
            if (result2 !== null) {
              result0 = [result0, result1, result2];
            } else {
              result0 = null;
              pos = pos1;
            }
          } else {
            result0 = null;
            pos = pos1;
          }
        } else {
          result0 = null;
          pos = pos1;
        }
        if (result0 !== null) {
          result0 = (function(offset, d) { return { type: 'regexp', value: new RegExp(d.join('')) }; })(pos0, result0[1]);
        }
        if (result0 === null) {
          pos = pos0;
        }
        
        cache[cacheKey] = {
          nextPos: pos,
          result:  result0
        };
        return result0;
      }
      
      function parse_field() {
        var cacheKey = "field@" + pos;
        var cachedResult = cache[cacheKey];
        if (cachedResult) {
          pos = cachedResult.nextPos;
          return cachedResult.result;
        }
        
        var result0, result1, result2, result3, result4;
        var pos0, pos1, pos2;
        
        pos0 = pos;
        pos1 = pos;
        if (input.charCodeAt(pos) === 46) {
          result0 = ".";
          pos++;
        } else {
          result0 = null;
          if (reportFailures === 0) {
            matchFailed("\".\"");
          }
        }
        if (result0 !== null) {
          result1 = parse_identifierName();
          if (result1 !== null) {
            result2 = [];
            pos2 = pos;
            if (input.charCodeAt(pos) === 46) {
              result3 = ".";
              pos++;
            } else {
              result3 = null;
              if (reportFailures === 0) {
                matchFailed("\".\"");
              }
            }
            if (result3 !== null) {
              result4 = parse_identifierName();
              if (result4 !== null) {
                result3 = [result3, result4];
              } else {
                result3 = null;
                pos = pos2;
              }
            } else {
              result3 = null;
              pos = pos2;
            }
            while (result3 !== null) {
              result2.push(result3);
              pos2 = pos;
              if (input.charCodeAt(pos) === 46) {
                result3 = ".";
                pos++;
              } else {
                result3 = null;
                if (reportFailures === 0) {
                  matchFailed("\".\"");
                }
              }
              if (result3 !== null) {
                result4 = parse_identifierName();
                if (result4 !== null) {
                  result3 = [result3, result4];
                } else {
                  result3 = null;
                  pos = pos2;
                }
              } else {
                result3 = null;
                pos = pos2;
              }
            }
            if (result2 !== null) {
              result0 = [result0, result1, result2];
            } else {
              result0 = null;
              pos = pos1;
            }
          } else {
            result0 = null;
            pos = pos1;
          }
        } else {
          result0 = null;
          pos = pos1;
        }
        if (result0 !== null) {
          result0 = (function(offset, i, is) {
          return { type: 'field', name: is.reduce(function(memo, p){ return memo + p[0] + p[1]; }, i)};
        })(pos0, result0[1], result0[2]);
        }
        if (result0 === null) {
          pos = pos0;
        }
        
        cache[cacheKey] = {
          nextPos: pos,
          result:  result0
        };
        return result0;
      }
      
      function parse_negation() {
        var cacheKey = "negation@" + pos;
        var cachedResult = cache[cacheKey];
        if (cachedResult) {
          pos = cachedResult.nextPos;
          return cachedResult.result;
        }
        
        var result0, result1, result2, result3, result4;
        var pos0, pos1;
        
        pos0 = pos;
        pos1 = pos;
        if (input.substr(pos, 5) === ":not(") {
          result0 = ":not(";
          pos += 5;
        } else {
          result0 = null;
          if (reportFailures === 0) {
            matchFailed("\":not(\"");
          }
        }
        if (result0 !== null) {
          result1 = parse__();
          if (result1 !== null) {
            result2 = parse_selectors();
            if (result2 !== null) {
              result3 = parse__();
              if (result3 !== null) {
                if (input.charCodeAt(pos) === 41) {
                  result4 = ")";
                  pos++;
                } else {
                  result4 = null;
                  if (reportFailures === 0) {
                    matchFailed("\")\"");
                  }
                }
                if (result4 !== null) {
                  result0 = [result0, result1, result2, result3, result4];
                } else {
                  result0 = null;
                  pos = pos1;
                }
              } else {
                result0 = null;
                pos = pos1;
              }
            } else {
              result0 = null;
              pos = pos1;
            }
          } else {
            result0 = null;
            pos = pos1;
          }
        } else {
          result0 = null;
          pos = pos1;
        }
        if (result0 !== null) {
          result0 = (function(offset, ss) { return { type: 'not', selectors: ss }; })(pos0, result0[2]);
        }
        if (result0 === null) {
          pos = pos0;
        }
        
        cache[cacheKey] = {
          nextPos: pos,
          result:  result0
        };
        return result0;
      }
      
      function parse_matches() {
        var cacheKey = "matches@" + pos;
        var cachedResult = cache[cacheKey];
        if (cachedResult) {
          pos = cachedResult.nextPos;
          return cachedResult.result;
        }
        
        var result0, result1, result2, result3, result4;
        var pos0, pos1;
        
        pos0 = pos;
        pos1 = pos;
        if (input.substr(pos, 9) === ":matches(") {
          result0 = ":matches(";
          pos += 9;
        } else {
          result0 = null;
          if (reportFailures === 0) {
            matchFailed("\":matches(\"");
          }
        }
        if (result0 !== null) {
          result1 = parse__();
          if (result1 !== null) {
            result2 = parse_selectors();
            if (result2 !== null) {
              result3 = parse__();
              if (result3 !== null) {
                if (input.charCodeAt(pos) === 41) {
                  result4 = ")";
                  pos++;
                } else {
                  result4 = null;
                  if (reportFailures === 0) {
                    matchFailed("\")\"");
                  }
                }
                if (result4 !== null) {
                  result0 = [result0, result1, result2, result3, result4];
                } else {
                  result0 = null;
                  pos = pos1;
                }
              } else {
                result0 = null;
                pos = pos1;
              }
            } else {
              result0 = null;
              pos = pos1;
            }
          } else {
            result0 = null;
            pos = pos1;
          }
        } else {
          result0 = null;
          pos = pos1;
        }
        if (result0 !== null) {
          result0 = (function(offset, ss) { return { type: 'matches', selectors: ss }; })(pos0, result0[2]);
        }
        if (result0 === null) {
          pos = pos0;
        }
        
        cache[cacheKey] = {
          nextPos: pos,
          result:  result0
        };
        return result0;
      }
      
      function parse_firstChild() {
        var cacheKey = "firstChild@" + pos;
        var cachedResult = cache[cacheKey];
        if (cachedResult) {
          pos = cachedResult.nextPos;
          return cachedResult.result;
        }
        
        var result0;
        var pos0;
        
        pos0 = pos;
        if (input.substr(pos, 12) === ":first-child") {
          result0 = ":first-child";
          pos += 12;
        } else {
          result0 = null;
          if (reportFailures === 0) {
            matchFailed("\":first-child\"");
          }
        }
        if (result0 !== null) {
          result0 = (function(offset) { return nth(1); })(pos0);
        }
        if (result0 === null) {
          pos = pos0;
        }
        
        cache[cacheKey] = {
          nextPos: pos,
          result:  result0
        };
        return result0;
      }
      
      function parse_lastChild() {
        var cacheKey = "lastChild@" + pos;
        var cachedResult = cache[cacheKey];
        if (cachedResult) {
          pos = cachedResult.nextPos;
          return cachedResult.result;
        }
        
        var result0;
        var pos0;
        
        pos0 = pos;
        if (input.substr(pos, 11) === ":last-child") {
          result0 = ":last-child";
          pos += 11;
        } else {
          result0 = null;
          if (reportFailures === 0) {
            matchFailed("\":last-child\"");
          }
        }
        if (result0 !== null) {
          result0 = (function(offset) { return nthLast(1); })(pos0);
        }
        if (result0 === null) {
          pos = pos0;
        }
        
        cache[cacheKey] = {
          nextPos: pos,
          result:  result0
        };
        return result0;
      }
      
      function parse_nthChild() {
        var cacheKey = "nthChild@" + pos;
        var cachedResult = cache[cacheKey];
        if (cachedResult) {
          pos = cachedResult.nextPos;
          return cachedResult.result;
        }
        
        var result0, result1, result2, result3, result4;
        var pos0, pos1;
        
        pos0 = pos;
        pos1 = pos;
        if (input.substr(pos, 11) === ":nth-child(") {
          result0 = ":nth-child(";
          pos += 11;
        } else {
          result0 = null;
          if (reportFailures === 0) {
            matchFailed("\":nth-child(\"");
          }
        }
        if (result0 !== null) {
          result1 = parse__();
          if (result1 !== null) {
            if (/^[0-9]/.test(input.charAt(pos))) {
              result3 = input.charAt(pos);
              pos++;
            } else {
              result3 = null;
              if (reportFailures === 0) {
                matchFailed("[0-9]");
              }
            }
            if (result3 !== null) {
              result2 = [];
              while (result3 !== null) {
                result2.push(result3);
                if (/^[0-9]/.test(input.charAt(pos))) {
                  result3 = input.charAt(pos);
                  pos++;
                } else {
                  result3 = null;
                  if (reportFailures === 0) {
                    matchFailed("[0-9]");
                  }
                }
              }
            } else {
              result2 = null;
            }
            if (result2 !== null) {
              result3 = parse__();
              if (result3 !== null) {
                if (input.charCodeAt(pos) === 41) {
                  result4 = ")";
                  pos++;
                } else {
                  result4 = null;
                  if (reportFailures === 0) {
                    matchFailed("\")\"");
                  }
                }
                if (result4 !== null) {
                  result0 = [result0, result1, result2, result3, result4];
                } else {
                  result0 = null;
                  pos = pos1;
                }
              } else {
                result0 = null;
                pos = pos1;
              }
            } else {
              result0 = null;
              pos = pos1;
            }
          } else {
            result0 = null;
            pos = pos1;
          }
        } else {
          result0 = null;
          pos = pos1;
        }
        if (result0 !== null) {
          result0 = (function(offset, n) { return nth(parseInt(n.join(''), 10)); })(pos0, result0[2]);
        }
        if (result0 === null) {
          pos = pos0;
        }
        
        cache[cacheKey] = {
          nextPos: pos,
          result:  result0
        };
        return result0;
      }
      
      function parse_nthLastChild() {
        var cacheKey = "nthLastChild@" + pos;
        var cachedResult = cache[cacheKey];
        if (cachedResult) {
          pos = cachedResult.nextPos;
          return cachedResult.result;
        }
        
        var result0, result1, result2, result3, result4;
        var pos0, pos1;
        
        pos0 = pos;
        pos1 = pos;
        if (input.substr(pos, 16) === ":nth-last-child(") {
          result0 = ":nth-last-child(";
          pos += 16;
        } else {
          result0 = null;
          if (reportFailures === 0) {
            matchFailed("\":nth-last-child(\"");
          }
        }
        if (result0 !== null) {
          result1 = parse__();
          if (result1 !== null) {
            if (/^[0-9]/.test(input.charAt(pos))) {
              result3 = input.charAt(pos);
              pos++;
            } else {
              result3 = null;
              if (reportFailures === 0) {
                matchFailed("[0-9]");
              }
            }
            if (result3 !== null) {
              result2 = [];
              while (result3 !== null) {
                result2.push(result3);
                if (/^[0-9]/.test(input.charAt(pos))) {
                  result3 = input.charAt(pos);
                  pos++;
                } else {
                  result3 = null;
                  if (reportFailures === 0) {
                    matchFailed("[0-9]");
                  }
                }
              }
            } else {
              result2 = null;
            }
            if (result2 !== null) {
              result3 = parse__();
              if (result3 !== null) {
                if (input.charCodeAt(pos) === 41) {
                  result4 = ")";
                  pos++;
                } else {
                  result4 = null;
                  if (reportFailures === 0) {
                    matchFailed("\")\"");
                  }
                }
                if (result4 !== null) {
                  result0 = [result0, result1, result2, result3, result4];
                } else {
                  result0 = null;
                  pos = pos1;
                }
              } else {
                result0 = null;
                pos = pos1;
              }
            } else {
              result0 = null;
              pos = pos1;
            }
          } else {
            result0 = null;
            pos = pos1;
          }
        } else {
          result0 = null;
          pos = pos1;
        }
        if (result0 !== null) {
          result0 = (function(offset, n) { return nthLast(parseInt(n.join(''), 10)); })(pos0, result0[2]);
        }
        if (result0 === null) {
          pos = pos0;
        }
        
        cache[cacheKey] = {
          nextPos: pos,
          result:  result0
        };
        return result0;
      }
      
      function parse_class() {
        var cacheKey = "class@" + pos;
        var cachedResult = cache[cacheKey];
        if (cachedResult) {
          pos = cachedResult.nextPos;
          return cachedResult.result;
        }
        
        var result0, result1;
        var pos0, pos1;
        
        pos0 = pos;
        pos1 = pos;
        if (input.charCodeAt(pos) === 58) {
          result0 = ":";
          pos++;
        } else {
          result0 = null;
          if (reportFailures === 0) {
            matchFailed("\":\"");
          }
        }
        if (result0 !== null) {
          if (input.substr(pos, 9).toLowerCase() === "statement") {
            result1 = input.substr(pos, 9);
            pos += 9;
          } else {
            result1 = null;
            if (reportFailures === 0) {
              matchFailed("\"statement\"");
            }
          }
          if (result1 === null) {
            if (input.substr(pos, 10).toLowerCase() === "expression") {
              result1 = input.substr(pos, 10);
              pos += 10;
            } else {
              result1 = null;
              if (reportFailures === 0) {
                matchFailed("\"expression\"");
              }
            }
            if (result1 === null) {
              if (input.substr(pos, 11).toLowerCase() === "declaration") {
                result1 = input.substr(pos, 11);
                pos += 11;
              } else {
                result1 = null;
                if (reportFailures === 0) {
                  matchFailed("\"declaration\"");
                }
              }
              if (result1 === null) {
                if (input.substr(pos, 8).toLowerCase() === "function") {
                  result1 = input.substr(pos, 8);
                  pos += 8;
                } else {
                  result1 = null;
                  if (reportFailures === 0) {
                    matchFailed("\"function\"");
                  }
                }
                if (result1 === null) {
                  if (input.substr(pos, 7).toLowerCase() === "pattern") {
                    result1 = input.substr(pos, 7);
                    pos += 7;
                  } else {
                    result1 = null;
                    if (reportFailures === 0) {
                      matchFailed("\"pattern\"");
                    }
                  }
                }
              }
            }
          }
          if (result1 !== null) {
            result0 = [result0, result1];
          } else {
            result0 = null;
            pos = pos1;
          }
        } else {
          result0 = null;
          pos = pos1;
        }
        if (result0 !== null) {
          result0 = (function(offset, c) {
          return { type: 'class', name: c };
        })(pos0, result0[1]);
        }
        if (result0 === null) {
          pos = pos0;
        }
        
        cache[cacheKey] = {
          nextPos: pos,
          result:  result0
        };
        return result0;
      }
      
      
      function cleanupExpected(expected) {
        expected.sort();
        
        var lastExpected = null;
        var cleanExpected = [];
        for (var i = 0; i < expected.length; i++) {
          if (expected[i] !== lastExpected) {
            cleanExpected.push(expected[i]);
            lastExpected = expected[i];
          }
        }
        return cleanExpected;
      }
      
      function computeErrorPosition() {
        /*
         * The first idea was to use |String.split| to break the input up to the
         * error position along newlines and derive the line and column from
         * there. However IE's |split| implementation is so broken that it was
         * enough to prevent it.
         */
        
        var line = 1;
        var column = 1;
        var seenCR = false;
        
        for (var i = 0; i < Math.max(pos, rightmostFailuresPos); i++) {
          var ch = input.charAt(i);
          if (ch === "\n") {
            if (!seenCR) { line++; }
            column = 1;
            seenCR = false;
          } else if (ch === "\r" || ch === "\u2028" || ch === "\u2029") {
            line++;
            column = 1;
            seenCR = true;
          } else {
            column++;
            seenCR = false;
          }
        }
        
        return { line: line, column: column };
      }
      
      
        function nth(n) { return { type: 'nth-child', index: { type: 'literal', value: n } }; }
        function nthLast(n) { return { type: 'nth-last-child', index: { type: 'literal', value: n } }; }
        function strUnescape(s) {
          return s.replace(/\\(.)/g, function(match, ch) {
            switch(ch) {
              case 'a': return '\a';
              case 'b': return '\b';
              case 'f': return '\f';
              case 'n': return '\n';
              case 'r': return '\r';
              case 't': return '\t';
              case 'v': return '\v';
              default: return ch;
            }
          });
        }
      
      
      var result = parseFunctions[startRule]();
      
      /*
       * The parser is now in one of the following three states:
       *
       * 1. The parser successfully parsed the whole input.
       *
       *    - |result !== null|
       *    - |pos === input.length|
       *    - |rightmostFailuresExpected| may or may not contain something
       *
       * 2. The parser successfully parsed only a part of the input.
       *
       *    - |result !== null|
       *    - |pos < input.length|
       *    - |rightmostFailuresExpected| may or may not contain something
       *
       * 3. The parser did not successfully parse any part of the input.
       *
       *   - |result === null|
       *   - |pos === 0|
       *   - |rightmostFailuresExpected| contains at least one failure
       *
       * All code following this comment (including called functions) must
       * handle these states.
       */
      if (result === null || pos !== input.length) {
        var offset = Math.max(pos, rightmostFailuresPos);
        var found = offset < input.length ? input.charAt(offset) : null;
        var errorPosition = computeErrorPosition();
        
        throw new this.SyntaxError(
          cleanupExpected(rightmostFailuresExpected),
          found,
          offset,
          errorPosition.line,
          errorPosition.column
        );
      }
      
      return result;
    },
    
    /* Returns the parser source code. */
    toSource: function() { return this._source; }
  };
  
  /* Thrown when a parser encounters a syntax error. */
  
  result.SyntaxError = function(expected, found, offset, line, column) {
    function buildMessage(expected, found) {
      var expectedHumanized, foundHumanized;
      
      switch (expected.length) {
        case 0:
          expectedHumanized = "end of input";
          break;
        case 1:
          expectedHumanized = expected[0];
          break;
        default:
          expectedHumanized = expected.slice(0, expected.length - 1).join(", ")
            + " or "
            + expected[expected.length - 1];
      }
      
      foundHumanized = found ? quote(found) : "end of input";
      
      return "Expected " + expectedHumanized + " but " + foundHumanized + " found.";
    }
    
    this.name = "SyntaxError";
    this.expected = expected;
    this.found = found;
    this.message = buildMessage(expected, found);
    this.offset = offset;
    this.line = line;
    this.column = column;
  };
  
  result.SyntaxError.prototype = Error.prototype;
  
  return result;
})();
if (typeof define === "function" && define.amd) { define(function(){ return result; }); } else if (typeof module !== "undefined" && module.exports) { module.exports = result; } else { this.esquery = result; }

},{}],309:[function(require,module,exports){
/*
  Copyright (C) 2012-2013 Yusuke Suzuki <utatane.tea@gmail.com>
  Copyright (C) 2012 Ariya Hidayat <ariya.hidayat@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*jslint vars:false, bitwise:true*/
/*jshint indent:4*/
/*global exports:true*/
(function clone(exports) {
    'use strict';

    var Syntax,
        isArray,
        VisitorOption,
        VisitorKeys,
        objectCreate,
        objectKeys,
        BREAK,
        SKIP,
        REMOVE;

    function ignoreJSHintError() { }

    isArray = Array.isArray;
    if (!isArray) {
        isArray = function isArray(array) {
            return Object.prototype.toString.call(array) === '[object Array]';
        };
    }

    function deepCopy(obj) {
        var ret = {}, key, val;
        for (key in obj) {
            if (obj.hasOwnProperty(key)) {
                val = obj[key];
                if (typeof val === 'object' && val !== null) {
                    ret[key] = deepCopy(val);
                } else {
                    ret[key] = val;
                }
            }
        }
        return ret;
    }

    function shallowCopy(obj) {
        var ret = {}, key;
        for (key in obj) {
            if (obj.hasOwnProperty(key)) {
                ret[key] = obj[key];
            }
        }
        return ret;
    }
    ignoreJSHintError(shallowCopy);

    // based on LLVM libc++ upper_bound / lower_bound
    // MIT License

    function upperBound(array, func) {
        var diff, len, i, current;

        len = array.length;
        i = 0;

        while (len) {
            diff = len >>> 1;
            current = i + diff;
            if (func(array[current])) {
                len = diff;
            } else {
                i = current + 1;
                len -= diff + 1;
            }
        }
        return i;
    }

    function lowerBound(array, func) {
        var diff, len, i, current;

        len = array.length;
        i = 0;

        while (len) {
            diff = len >>> 1;
            current = i + diff;
            if (func(array[current])) {
                i = current + 1;
                len -= diff + 1;
            } else {
                len = diff;
            }
        }
        return i;
    }
    ignoreJSHintError(lowerBound);

    objectCreate = Object.create || (function () {
        function F() { }

        return function (o) {
            F.prototype = o;
            return new F();
        };
    })();

    objectKeys = Object.keys || function (o) {
        var keys = [], key;
        for (key in o) {
            keys.push(key);
        }
        return keys;
    };

    function extend(to, from) {
        var keys = objectKeys(from), key, i, len;
        for (i = 0, len = keys.length; i < len; i += 1) {
            key = keys[i];
            to[key] = from[key];
        }
        return to;
    }

    Syntax = {
        AssignmentExpression: 'AssignmentExpression',
        AssignmentPattern: 'AssignmentPattern',
        ArrayExpression: 'ArrayExpression',
        ArrayPattern: 'ArrayPattern',
        ArrowFunctionExpression: 'ArrowFunctionExpression',
        AwaitExpression: 'AwaitExpression', // CAUTION: It's deferred to ES7.
        BlockStatement: 'BlockStatement',
        BinaryExpression: 'BinaryExpression',
        BreakStatement: 'BreakStatement',
        CallExpression: 'CallExpression',
        CatchClause: 'CatchClause',
        ClassBody: 'ClassBody',
        ClassDeclaration: 'ClassDeclaration',
        ClassExpression: 'ClassExpression',
        ComprehensionBlock: 'ComprehensionBlock',  // CAUTION: It's deferred to ES7.
        ComprehensionExpression: 'ComprehensionExpression',  // CAUTION: It's deferred to ES7.
        ConditionalExpression: 'ConditionalExpression',
        ContinueStatement: 'ContinueStatement',
        DebuggerStatement: 'DebuggerStatement',
        DirectiveStatement: 'DirectiveStatement',
        DoWhileStatement: 'DoWhileStatement',
        EmptyStatement: 'EmptyStatement',
        ExportAllDeclaration: 'ExportAllDeclaration',
        ExportDefaultDeclaration: 'ExportDefaultDeclaration',
        ExportNamedDeclaration: 'ExportNamedDeclaration',
        ExportSpecifier: 'ExportSpecifier',
        ExpressionStatement: 'ExpressionStatement',
        ForStatement: 'ForStatement',
        ForInStatement: 'ForInStatement',
        ForOfStatement: 'ForOfStatement',
        FunctionDeclaration: 'FunctionDeclaration',
        FunctionExpression: 'FunctionExpression',
        GeneratorExpression: 'GeneratorExpression',  // CAUTION: It's deferred to ES7.
        Identifier: 'Identifier',
        IfStatement: 'IfStatement',
        ImportDeclaration: 'ImportDeclaration',
        ImportDefaultSpecifier: 'ImportDefaultSpecifier',
        ImportNamespaceSpecifier: 'ImportNamespaceSpecifier',
        ImportSpecifier: 'ImportSpecifier',
        Literal: 'Literal',
        LabeledStatement: 'LabeledStatement',
        LogicalExpression: 'LogicalExpression',
        MemberExpression: 'MemberExpression',
        MetaProperty: 'MetaProperty',
        MethodDefinition: 'MethodDefinition',
        ModuleSpecifier: 'ModuleSpecifier',
        NewExpression: 'NewExpression',
        ObjectExpression: 'ObjectExpression',
        ObjectPattern: 'ObjectPattern',
        Program: 'Program',
        Property: 'Property',
        RestElement: 'RestElement',
        ReturnStatement: 'ReturnStatement',
        SequenceExpression: 'SequenceExpression',
        SpreadElement: 'SpreadElement',
        Super: 'Super',
        SwitchStatement: 'SwitchStatement',
        SwitchCase: 'SwitchCase',
        TaggedTemplateExpression: 'TaggedTemplateExpression',
        TemplateElement: 'TemplateElement',
        TemplateLiteral: 'TemplateLiteral',
        ThisExpression: 'ThisExpression',
        ThrowStatement: 'ThrowStatement',
        TryStatement: 'TryStatement',
        UnaryExpression: 'UnaryExpression',
        UpdateExpression: 'UpdateExpression',
        VariableDeclaration: 'VariableDeclaration',
        VariableDeclarator: 'VariableDeclarator',
        WhileStatement: 'WhileStatement',
        WithStatement: 'WithStatement',
        YieldExpression: 'YieldExpression'
    };

    VisitorKeys = {
        AssignmentExpression: ['left', 'right'],
        AssignmentPattern: ['left', 'right'],
        ArrayExpression: ['elements'],
        ArrayPattern: ['elements'],
        ArrowFunctionExpression: ['params', 'body'],
        AwaitExpression: ['argument'], // CAUTION: It's deferred to ES7.
        BlockStatement: ['body'],
        BinaryExpression: ['left', 'right'],
        BreakStatement: ['label'],
        CallExpression: ['callee', 'arguments'],
        CatchClause: ['param', 'body'],
        ClassBody: ['body'],
        ClassDeclaration: ['id', 'superClass', 'body'],
        ClassExpression: ['id', 'superClass', 'body'],
        ComprehensionBlock: ['left', 'right'],  // CAUTION: It's deferred to ES7.
        ComprehensionExpression: ['blocks', 'filter', 'body'],  // CAUTION: It's deferred to ES7.
        ConditionalExpression: ['test', 'consequent', 'alternate'],
        ContinueStatement: ['label'],
        DebuggerStatement: [],
        DirectiveStatement: [],
        DoWhileStatement: ['body', 'test'],
        EmptyStatement: [],
        ExportAllDeclaration: ['source'],
        ExportDefaultDeclaration: ['declaration'],
        ExportNamedDeclaration: ['declaration', 'specifiers', 'source'],
        ExportSpecifier: ['exported', 'local'],
        ExpressionStatement: ['expression'],
        ForStatement: ['init', 'test', 'update', 'body'],
        ForInStatement: ['left', 'right', 'body'],
        ForOfStatement: ['left', 'right', 'body'],
        FunctionDeclaration: ['id', 'params', 'body'],
        FunctionExpression: ['id', 'params', 'body'],
        GeneratorExpression: ['blocks', 'filter', 'body'],  // CAUTION: It's deferred to ES7.
        Identifier: [],
        IfStatement: ['test', 'consequent', 'alternate'],
        ImportDeclaration: ['specifiers', 'source'],
        ImportDefaultSpecifier: ['local'],
        ImportNamespaceSpecifier: ['local'],
        ImportSpecifier: ['imported', 'local'],
        Literal: [],
        LabeledStatement: ['label', 'body'],
        LogicalExpression: ['left', 'right'],
        MemberExpression: ['object', 'property'],
        MetaProperty: ['meta', 'property'],
        MethodDefinition: ['key', 'value'],
        ModuleSpecifier: [],
        NewExpression: ['callee', 'arguments'],
        ObjectExpression: ['properties'],
        ObjectPattern: ['properties'],
        Program: ['body'],
        Property: ['key', 'value'],
        RestElement: [ 'argument' ],
        ReturnStatement: ['argument'],
        SequenceExpression: ['expressions'],
        SpreadElement: ['argument'],
        Super: [],
        SwitchStatement: ['discriminant', 'cases'],
        SwitchCase: ['test', 'consequent'],
        TaggedTemplateExpression: ['tag', 'quasi'],
        TemplateElement: [],
        TemplateLiteral: ['quasis', 'expressions'],
        ThisExpression: [],
        ThrowStatement: ['argument'],
        TryStatement: ['block', 'handler', 'finalizer'],
        UnaryExpression: ['argument'],
        UpdateExpression: ['argument'],
        VariableDeclaration: ['declarations'],
        VariableDeclarator: ['id', 'init'],
        WhileStatement: ['test', 'body'],
        WithStatement: ['object', 'body'],
        YieldExpression: ['argument']
    };

    // unique id
    BREAK = {};
    SKIP = {};
    REMOVE = {};

    VisitorOption = {
        Break: BREAK,
        Skip: SKIP,
        Remove: REMOVE
    };

    function Reference(parent, key) {
        this.parent = parent;
        this.key = key;
    }

    Reference.prototype.replace = function replace(node) {
        this.parent[this.key] = node;
    };

    Reference.prototype.remove = function remove() {
        if (isArray(this.parent)) {
            this.parent.splice(this.key, 1);
            return true;
        } else {
            this.replace(null);
            return false;
        }
    };

    function Element(node, path, wrap, ref) {
        this.node = node;
        this.path = path;
        this.wrap = wrap;
        this.ref = ref;
    }

    function Controller() { }

    // API:
    // return property path array from root to current node
    Controller.prototype.path = function path() {
        var i, iz, j, jz, result, element;

        function addToPath(result, path) {
            if (isArray(path)) {
                for (j = 0, jz = path.length; j < jz; ++j) {
                    result.push(path[j]);
                }
            } else {
                result.push(path);
            }
        }

        // root node
        if (!this.__current.path) {
            return null;
        }

        // first node is sentinel, second node is root element
        result = [];
        for (i = 2, iz = this.__leavelist.length; i < iz; ++i) {
            element = this.__leavelist[i];
            addToPath(result, element.path);
        }
        addToPath(result, this.__current.path);
        return result;
    };

    // API:
    // return type of current node
    Controller.prototype.type = function () {
        var node = this.current();
        return node.type || this.__current.wrap;
    };

    // API:
    // return array of parent elements
    Controller.prototype.parents = function parents() {
        var i, iz, result;

        // first node is sentinel
        result = [];
        for (i = 1, iz = this.__leavelist.length; i < iz; ++i) {
            result.push(this.__leavelist[i].node);
        }

        return result;
    };

    // API:
    // return current node
    Controller.prototype.current = function current() {
        return this.__current.node;
    };

    Controller.prototype.__execute = function __execute(callback, element) {
        var previous, result;

        result = undefined;

        previous  = this.__current;
        this.__current = element;
        this.__state = null;
        if (callback) {
            result = callback.call(this, element.node, this.__leavelist[this.__leavelist.length - 1].node);
        }
        this.__current = previous;

        return result;
    };

    // API:
    // notify control skip / break
    Controller.prototype.notify = function notify(flag) {
        this.__state = flag;
    };

    // API:
    // skip child nodes of current node
    Controller.prototype.skip = function () {
        this.notify(SKIP);
    };

    // API:
    // break traversals
    Controller.prototype['break'] = function () {
        this.notify(BREAK);
    };

    // API:
    // remove node
    Controller.prototype.remove = function () {
        this.notify(REMOVE);
    };

    Controller.prototype.__initialize = function(root, visitor) {
        this.visitor = visitor;
        this.root = root;
        this.__worklist = [];
        this.__leavelist = [];
        this.__current = null;
        this.__state = null;
        this.__fallback = visitor.fallback === 'iteration';
        this.__keys = VisitorKeys;
        if (visitor.keys) {
            this.__keys = extend(objectCreate(this.__keys), visitor.keys);
        }
    };

    function isNode(node) {
        if (node == null) {
            return false;
        }
        return typeof node === 'object' && typeof node.type === 'string';
    }

    function isProperty(nodeType, key) {
        return (nodeType === Syntax.ObjectExpression || nodeType === Syntax.ObjectPattern) && 'properties' === key;
    }

    Controller.prototype.traverse = function traverse(root, visitor) {
        var worklist,
            leavelist,
            element,
            node,
            nodeType,
            ret,
            key,
            current,
            current2,
            candidates,
            candidate,
            sentinel;

        this.__initialize(root, visitor);

        sentinel = {};

        // reference
        worklist = this.__worklist;
        leavelist = this.__leavelist;

        // initialize
        worklist.push(new Element(root, null, null, null));
        leavelist.push(new Element(null, null, null, null));

        while (worklist.length) {
            element = worklist.pop();

            if (element === sentinel) {
                element = leavelist.pop();

                ret = this.__execute(visitor.leave, element);

                if (this.__state === BREAK || ret === BREAK) {
                    return;
                }
                continue;
            }

            if (element.node) {

                ret = this.__execute(visitor.enter, element);

                if (this.__state === BREAK || ret === BREAK) {
                    return;
                }

                worklist.push(sentinel);
                leavelist.push(element);

                if (this.__state === SKIP || ret === SKIP) {
                    continue;
                }

                node = element.node;
                nodeType = element.wrap || node.type;
                candidates = this.__keys[nodeType];
                if (!candidates) {
                    if (this.__fallback) {
                        candidates = objectKeys(node);
                    } else {
                        throw new Error('Unknown node type ' + nodeType + '.');
                    }
                }

                current = candidates.length;
                while ((current -= 1) >= 0) {
                    key = candidates[current];
                    candidate = node[key];
                    if (!candidate) {
                        continue;
                    }

                    if (isArray(candidate)) {
                        current2 = candidate.length;
                        while ((current2 -= 1) >= 0) {
                            if (!candidate[current2]) {
                                continue;
                            }
                            if (isProperty(nodeType, candidates[current])) {
                                element = new Element(candidate[current2], [key, current2], 'Property', null);
                            } else if (isNode(candidate[current2])) {
                                element = new Element(candidate[current2], [key, current2], null, null);
                            } else {
                                continue;
                            }
                            worklist.push(element);
                        }
                    } else if (isNode(candidate)) {
                        worklist.push(new Element(candidate, key, null, null));
                    }
                }
            }
        }
    };

    Controller.prototype.replace = function replace(root, visitor) {
        function removeElem(element) {
            var i,
                key,
                nextElem,
                parent;

            if (element.ref.remove()) {
                // When the reference is an element of an array.
                key = element.ref.key;
                parent = element.ref.parent;

                // If removed from array, then decrease following items' keys.
                i = worklist.length;
                while (i--) {
                    nextElem = worklist[i];
                    if (nextElem.ref && nextElem.ref.parent === parent) {
                        if  (nextElem.ref.key < key) {
                            break;
                        }
                        --nextElem.ref.key;
                    }
                }
            }
        }

        var worklist,
            leavelist,
            node,
            nodeType,
            target,
            element,
            current,
            current2,
            candidates,
            candidate,
            sentinel,
            outer,
            key;

        this.__initialize(root, visitor);

        sentinel = {};

        // reference
        worklist = this.__worklist;
        leavelist = this.__leavelist;

        // initialize
        outer = {
            root: root
        };
        element = new Element(root, null, null, new Reference(outer, 'root'));
        worklist.push(element);
        leavelist.push(element);

        while (worklist.length) {
            element = worklist.pop();

            if (element === sentinel) {
                element = leavelist.pop();

                target = this.__execute(visitor.leave, element);

                // node may be replaced with null,
                // so distinguish between undefined and null in this place
                if (target !== undefined && target !== BREAK && target !== SKIP && target !== REMOVE) {
                    // replace
                    element.ref.replace(target);
                }

                if (this.__state === REMOVE || target === REMOVE) {
                    removeElem(element);
                }

                if (this.__state === BREAK || target === BREAK) {
                    return outer.root;
                }
                continue;
            }

            target = this.__execute(visitor.enter, element);

            // node may be replaced with null,
            // so distinguish between undefined and null in this place
            if (target !== undefined && target !== BREAK && target !== SKIP && target !== REMOVE) {
                // replace
                element.ref.replace(target);
                element.node = target;
            }

            if (this.__state === REMOVE || target === REMOVE) {
                removeElem(element);
                element.node = null;
            }

            if (this.__state === BREAK || target === BREAK) {
                return outer.root;
            }

            // node may be null
            node = element.node;
            if (!node) {
                continue;
            }

            worklist.push(sentinel);
            leavelist.push(element);

            if (this.__state === SKIP || target === SKIP) {
                continue;
            }

            nodeType = element.wrap || node.type;
            candidates = this.__keys[nodeType];
            if (!candidates) {
                if (this.__fallback) {
                    candidates = objectKeys(node);
                } else {
                    throw new Error('Unknown node type ' + nodeType + '.');
                }
            }

            current = candidates.length;
            while ((current -= 1) >= 0) {
                key = candidates[current];
                candidate = node[key];
                if (!candidate) {
                    continue;
                }

                if (isArray(candidate)) {
                    current2 = candidate.length;
                    while ((current2 -= 1) >= 0) {
                        if (!candidate[current2]) {
                            continue;
                        }
                        if (isProperty(nodeType, candidates[current])) {
                            element = new Element(candidate[current2], [key, current2], 'Property', new Reference(candidate, current2));
                        } else if (isNode(candidate[current2])) {
                            element = new Element(candidate[current2], [key, current2], null, new Reference(candidate, current2));
                        } else {
                            continue;
                        }
                        worklist.push(element);
                    }
                } else if (isNode(candidate)) {
                    worklist.push(new Element(candidate, key, null, new Reference(node, key)));
                }
            }
        }

        return outer.root;
    };

    function traverse(root, visitor) {
        var controller = new Controller();
        return controller.traverse(root, visitor);
    }

    function replace(root, visitor) {
        var controller = new Controller();
        return controller.replace(root, visitor);
    }

    function extendCommentRange(comment, tokens) {
        var target;

        target = upperBound(tokens, function search(token) {
            return token.range[0] > comment.range[0];
        });

        comment.extendedRange = [comment.range[0], comment.range[1]];

        if (target !== tokens.length) {
            comment.extendedRange[1] = tokens[target].range[0];
        }

        target -= 1;
        if (target >= 0) {
            comment.extendedRange[0] = tokens[target].range[1];
        }

        return comment;
    }

    function attachComments(tree, providedComments, tokens) {
        // At first, we should calculate extended comment ranges.
        var comments = [], comment, len, i, cursor;

        if (!tree.range) {
            throw new Error('attachComments needs range information');
        }

        // tokens array is empty, we attach comments to tree as 'leadingComments'
        if (!tokens.length) {
            if (providedComments.length) {
                for (i = 0, len = providedComments.length; i < len; i += 1) {
                    comment = deepCopy(providedComments[i]);
                    comment.extendedRange = [0, tree.range[0]];
                    comments.push(comment);
                }
                tree.leadingComments = comments;
            }
            return tree;
        }

        for (i = 0, len = providedComments.length; i < len; i += 1) {
            comments.push(extendCommentRange(deepCopy(providedComments[i]), tokens));
        }

        // This is based on John Freeman's implementation.
        cursor = 0;
        traverse(tree, {
            enter: function (node) {
                var comment;

                while (cursor < comments.length) {
                    comment = comments[cursor];
                    if (comment.extendedRange[1] > node.range[0]) {
                        break;
                    }

                    if (comment.extendedRange[1] === node.range[0]) {
                        if (!node.leadingComments) {
                            node.leadingComments = [];
                        }
                        node.leadingComments.push(comment);
                        comments.splice(cursor, 1);
                    } else {
                        cursor += 1;
                    }
                }

                // already out of owned node
                if (cursor === comments.length) {
                    return VisitorOption.Break;
                }

                if (comments[cursor].extendedRange[0] > node.range[1]) {
                    return VisitorOption.Skip;
                }
            }
        });

        cursor = 0;
        traverse(tree, {
            leave: function (node) {
                var comment;

                while (cursor < comments.length) {
                    comment = comments[cursor];
                    if (node.range[1] < comment.extendedRange[0]) {
                        break;
                    }

                    if (node.range[1] === comment.extendedRange[0]) {
                        if (!node.trailingComments) {
                            node.trailingComments = [];
                        }
                        node.trailingComments.push(comment);
                        comments.splice(cursor, 1);
                    } else {
                        cursor += 1;
                    }
                }

                // already out of owned node
                if (cursor === comments.length) {
                    return VisitorOption.Break;
                }

                if (comments[cursor].extendedRange[0] > node.range[1]) {
                    return VisitorOption.Skip;
                }
            }
        });

        return tree;
    }

    exports.version = require('./package.json').version;
    exports.Syntax = Syntax;
    exports.traverse = traverse;
    exports.replace = replace;
    exports.attachComments = attachComments;
    exports.VisitorKeys = VisitorKeys;
    exports.VisitorOption = VisitorOption;
    exports.Controller = Controller;
    exports.cloneEnvironment = function () { return clone({}); };

    return exports;
}(exports));
/* vim: set sw=4 ts=4 et tw=80 : */

},{"./package.json":310}],310:[function(require,module,exports){
module.exports={
  "name": "estraverse",
  "description": "ECMAScript JS AST traversal functions",
  "homepage": "https://github.com/estools/estraverse",
  "main": "estraverse.js",
  "version": "4.1.0",
  "engines": {
    "node": ">=0.10.0"
  },
  "maintainers": [
    {
      "name": "constellation",
      "email": "utatane.tea@gmail.com"
    },
    {
      "name": "michaelficarra",
      "email": "npm@michael.ficarra.me"
    }
  ],
  "repository": {
    "type": "git",
    "url": "git+ssh://git@github.com/estools/estraverse.git"
  },
  "devDependencies": {
    "chai": "^2.1.1",
    "coffee-script": "^1.8.0",
    "espree": "^1.11.0",
    "gulp": "^3.8.10",
    "gulp-bump": "^0.2.2",
    "gulp-filter": "^2.0.0",
    "gulp-git": "^1.0.1",
    "gulp-tag-version": "^1.2.1",
    "jshint": "^2.5.6",
    "mocha": "^2.1.0"
  },
  "licenses": [
    {
      "type": "BSD",
      "url": "http://github.com/estools/estraverse/raw/master/LICENSE.BSD"
    }
  ],
  "scripts": {
    "test": "npm run-script lint && npm run-script unit-test",
    "lint": "jshint estraverse.js",
    "unit-test": "mocha --compilers coffee:coffee-script/register"
  },
  "gitHead": "347d52996336719b5910c7ffb5ff3ea8ecb87cf3",
  "bugs": {
    "url": "https://github.com/estools/estraverse/issues"
  },
  "_id": "estraverse@4.1.0",
  "_shasum": "40f23a76092041be6467d7f235c933b670766e05",
  "_from": "estraverse@>=4.0.0 <5.0.0",
  "_npmVersion": "2.8.3",
  "_nodeVersion": "1.8.1",
  "_npmUser": {
    "name": "constellation",
    "email": "utatane.tea@gmail.com"
  },
  "dist": {
    "shasum": "40f23a76092041be6467d7f235c933b670766e05",
    "tarball": "http://registry.npmjs.org/estraverse/-/estraverse-4.1.0.tgz"
  },
  "directories": {},
  "_resolved": "https://registry.npmjs.org/estraverse/-/estraverse-4.1.0.tgz"
}

},{}],311:[function(require,module,exports){
/*
  Copyright (C) 2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 'AS IS'
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

(function () {
    'use strict';

    function isExpression(node) {
        if (node == null) { return false; }
        switch (node.type) {
            case 'ArrayExpression':
            case 'AssignmentExpression':
            case 'BinaryExpression':
            case 'CallExpression':
            case 'ConditionalExpression':
            case 'FunctionExpression':
            case 'Identifier':
            case 'Literal':
            case 'LogicalExpression':
            case 'MemberExpression':
            case 'NewExpression':
            case 'ObjectExpression':
            case 'SequenceExpression':
            case 'ThisExpression':
            case 'UnaryExpression':
            case 'UpdateExpression':
                return true;
        }
        return false;
    }

    function isIterationStatement(node) {
        if (node == null) { return false; }
        switch (node.type) {
            case 'DoWhileStatement':
            case 'ForInStatement':
            case 'ForStatement':
            case 'WhileStatement':
                return true;
        }
        return false;
    }

    function isStatement(node) {
        if (node == null) { return false; }
        switch (node.type) {
            case 'BlockStatement':
            case 'BreakStatement':
            case 'ContinueStatement':
            case 'DebuggerStatement':
            case 'DoWhileStatement':
            case 'EmptyStatement':
            case 'ExpressionStatement':
            case 'ForInStatement':
            case 'ForStatement':
            case 'IfStatement':
            case 'LabeledStatement':
            case 'ReturnStatement':
            case 'SwitchStatement':
            case 'ThrowStatement':
            case 'TryStatement':
            case 'VariableDeclaration':
            case 'WhileStatement':
            case 'WithStatement':
                return true;
        }
        return false;
    }

    function isSourceElement(node) {
      return isStatement(node) || node != null && node.type === 'FunctionDeclaration';
    }

    function trailingStatement(node) {
        switch (node.type) {
        case 'IfStatement':
            if (node.alternate != null) {
                return node.alternate;
            }
            return node.consequent;

        case 'LabeledStatement':
        case 'ForStatement':
        case 'ForInStatement':
        case 'WhileStatement':
        case 'WithStatement':
            return node.body;
        }
        return null;
    }

    function isProblematicIfStatement(node) {
        var current;

        if (node.type !== 'IfStatement') {
            return false;
        }
        if (node.alternate == null) {
            return false;
        }
        current = node.consequent;
        do {
            if (current.type === 'IfStatement') {
                if (current.alternate == null)  {
                    return true;
                }
            }
            current = trailingStatement(current);
        } while (current);

        return false;
    }

    module.exports = {
        isExpression: isExpression,
        isStatement: isStatement,
        isIterationStatement: isIterationStatement,
        isSourceElement: isSourceElement,
        isProblematicIfStatement: isProblematicIfStatement,

        trailingStatement: trailingStatement
    };
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{}],312:[function(require,module,exports){
/*
  Copyright (C) 2013-2014 Yusuke Suzuki <utatane.tea@gmail.com>
  Copyright (C) 2014 Ivan Nikulin <ifaaan@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

(function () {
    'use strict';

    var ES6Regex, ES5Regex, NON_ASCII_WHITESPACES, IDENTIFIER_START, IDENTIFIER_PART, ch;

    // See `tools/generate-identifier-regex.js`.
    ES5Regex = {
        // ECMAScript 5.1/Unicode v7.0.0 NonAsciiIdentifierStart:
        NonAsciiIdentifierStart: /[\xAA\xB5\xBA\xC0-\xD6\xD8-\xF6\xF8-\u02C1\u02C6-\u02D1\u02E0-\u02E4\u02EC\u02EE\u0370-\u0374\u0376\u0377\u037A-\u037D\u037F\u0386\u0388-\u038A\u038C\u038E-\u03A1\u03A3-\u03F5\u03F7-\u0481\u048A-\u052F\u0531-\u0556\u0559\u0561-\u0587\u05D0-\u05EA\u05F0-\u05F2\u0620-\u064A\u066E\u066F\u0671-\u06D3\u06D5\u06E5\u06E6\u06EE\u06EF\u06FA-\u06FC\u06FF\u0710\u0712-\u072F\u074D-\u07A5\u07B1\u07CA-\u07EA\u07F4\u07F5\u07FA\u0800-\u0815\u081A\u0824\u0828\u0840-\u0858\u08A0-\u08B2\u0904-\u0939\u093D\u0950\u0958-\u0961\u0971-\u0980\u0985-\u098C\u098F\u0990\u0993-\u09A8\u09AA-\u09B0\u09B2\u09B6-\u09B9\u09BD\u09CE\u09DC\u09DD\u09DF-\u09E1\u09F0\u09F1\u0A05-\u0A0A\u0A0F\u0A10\u0A13-\u0A28\u0A2A-\u0A30\u0A32\u0A33\u0A35\u0A36\u0A38\u0A39\u0A59-\u0A5C\u0A5E\u0A72-\u0A74\u0A85-\u0A8D\u0A8F-\u0A91\u0A93-\u0AA8\u0AAA-\u0AB0\u0AB2\u0AB3\u0AB5-\u0AB9\u0ABD\u0AD0\u0AE0\u0AE1\u0B05-\u0B0C\u0B0F\u0B10\u0B13-\u0B28\u0B2A-\u0B30\u0B32\u0B33\u0B35-\u0B39\u0B3D\u0B5C\u0B5D\u0B5F-\u0B61\u0B71\u0B83\u0B85-\u0B8A\u0B8E-\u0B90\u0B92-\u0B95\u0B99\u0B9A\u0B9C\u0B9E\u0B9F\u0BA3\u0BA4\u0BA8-\u0BAA\u0BAE-\u0BB9\u0BD0\u0C05-\u0C0C\u0C0E-\u0C10\u0C12-\u0C28\u0C2A-\u0C39\u0C3D\u0C58\u0C59\u0C60\u0C61\u0C85-\u0C8C\u0C8E-\u0C90\u0C92-\u0CA8\u0CAA-\u0CB3\u0CB5-\u0CB9\u0CBD\u0CDE\u0CE0\u0CE1\u0CF1\u0CF2\u0D05-\u0D0C\u0D0E-\u0D10\u0D12-\u0D3A\u0D3D\u0D4E\u0D60\u0D61\u0D7A-\u0D7F\u0D85-\u0D96\u0D9A-\u0DB1\u0DB3-\u0DBB\u0DBD\u0DC0-\u0DC6\u0E01-\u0E30\u0E32\u0E33\u0E40-\u0E46\u0E81\u0E82\u0E84\u0E87\u0E88\u0E8A\u0E8D\u0E94-\u0E97\u0E99-\u0E9F\u0EA1-\u0EA3\u0EA5\u0EA7\u0EAA\u0EAB\u0EAD-\u0EB0\u0EB2\u0EB3\u0EBD\u0EC0-\u0EC4\u0EC6\u0EDC-\u0EDF\u0F00\u0F40-\u0F47\u0F49-\u0F6C\u0F88-\u0F8C\u1000-\u102A\u103F\u1050-\u1055\u105A-\u105D\u1061\u1065\u1066\u106E-\u1070\u1075-\u1081\u108E\u10A0-\u10C5\u10C7\u10CD\u10D0-\u10FA\u10FC-\u1248\u124A-\u124D\u1250-\u1256\u1258\u125A-\u125D\u1260-\u1288\u128A-\u128D\u1290-\u12B0\u12B2-\u12B5\u12B8-\u12BE\u12C0\u12C2-\u12C5\u12C8-\u12D6\u12D8-\u1310\u1312-\u1315\u1318-\u135A\u1380-\u138F\u13A0-\u13F4\u1401-\u166C\u166F-\u167F\u1681-\u169A\u16A0-\u16EA\u16EE-\u16F8\u1700-\u170C\u170E-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176C\u176E-\u1770\u1780-\u17B3\u17D7\u17DC\u1820-\u1877\u1880-\u18A8\u18AA\u18B0-\u18F5\u1900-\u191E\u1950-\u196D\u1970-\u1974\u1980-\u19AB\u19C1-\u19C7\u1A00-\u1A16\u1A20-\u1A54\u1AA7\u1B05-\u1B33\u1B45-\u1B4B\u1B83-\u1BA0\u1BAE\u1BAF\u1BBA-\u1BE5\u1C00-\u1C23\u1C4D-\u1C4F\u1C5A-\u1C7D\u1CE9-\u1CEC\u1CEE-\u1CF1\u1CF5\u1CF6\u1D00-\u1DBF\u1E00-\u1F15\u1F18-\u1F1D\u1F20-\u1F45\u1F48-\u1F4D\u1F50-\u1F57\u1F59\u1F5B\u1F5D\u1F5F-\u1F7D\u1F80-\u1FB4\u1FB6-\u1FBC\u1FBE\u1FC2-\u1FC4\u1FC6-\u1FCC\u1FD0-\u1FD3\u1FD6-\u1FDB\u1FE0-\u1FEC\u1FF2-\u1FF4\u1FF6-\u1FFC\u2071\u207F\u2090-\u209C\u2102\u2107\u210A-\u2113\u2115\u2119-\u211D\u2124\u2126\u2128\u212A-\u212D\u212F-\u2139\u213C-\u213F\u2145-\u2149\u214E\u2160-\u2188\u2C00-\u2C2E\u2C30-\u2C5E\u2C60-\u2CE4\u2CEB-\u2CEE\u2CF2\u2CF3\u2D00-\u2D25\u2D27\u2D2D\u2D30-\u2D67\u2D6F\u2D80-\u2D96\u2DA0-\u2DA6\u2DA8-\u2DAE\u2DB0-\u2DB6\u2DB8-\u2DBE\u2DC0-\u2DC6\u2DC8-\u2DCE\u2DD0-\u2DD6\u2DD8-\u2DDE\u2E2F\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303C\u3041-\u3096\u309D-\u309F\u30A1-\u30FA\u30FC-\u30FF\u3105-\u312D\u3131-\u318E\u31A0-\u31BA\u31F0-\u31FF\u3400-\u4DB5\u4E00-\u9FCC\uA000-\uA48C\uA4D0-\uA4FD\uA500-\uA60C\uA610-\uA61F\uA62A\uA62B\uA640-\uA66E\uA67F-\uA69D\uA6A0-\uA6EF\uA717-\uA71F\uA722-\uA788\uA78B-\uA78E\uA790-\uA7AD\uA7B0\uA7B1\uA7F7-\uA801\uA803-\uA805\uA807-\uA80A\uA80C-\uA822\uA840-\uA873\uA882-\uA8B3\uA8F2-\uA8F7\uA8FB\uA90A-\uA925\uA930-\uA946\uA960-\uA97C\uA984-\uA9B2\uA9CF\uA9E0-\uA9E4\uA9E6-\uA9EF\uA9FA-\uA9FE\uAA00-\uAA28\uAA40-\uAA42\uAA44-\uAA4B\uAA60-\uAA76\uAA7A\uAA7E-\uAAAF\uAAB1\uAAB5\uAAB6\uAAB9-\uAABD\uAAC0\uAAC2\uAADB-\uAADD\uAAE0-\uAAEA\uAAF2-\uAAF4\uAB01-\uAB06\uAB09-\uAB0E\uAB11-\uAB16\uAB20-\uAB26\uAB28-\uAB2E\uAB30-\uAB5A\uAB5C-\uAB5F\uAB64\uAB65\uABC0-\uABE2\uAC00-\uD7A3\uD7B0-\uD7C6\uD7CB-\uD7FB\uF900-\uFA6D\uFA70-\uFAD9\uFB00-\uFB06\uFB13-\uFB17\uFB1D\uFB1F-\uFB28\uFB2A-\uFB36\uFB38-\uFB3C\uFB3E\uFB40\uFB41\uFB43\uFB44\uFB46-\uFBB1\uFBD3-\uFD3D\uFD50-\uFD8F\uFD92-\uFDC7\uFDF0-\uFDFB\uFE70-\uFE74\uFE76-\uFEFC\uFF21-\uFF3A\uFF41-\uFF5A\uFF66-\uFFBE\uFFC2-\uFFC7\uFFCA-\uFFCF\uFFD2-\uFFD7\uFFDA-\uFFDC]/,
        // ECMAScript 5.1/Unicode v7.0.0 NonAsciiIdentifierPart:
        NonAsciiIdentifierPart: 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    };

    ES6Regex = {
        // ECMAScript 6/Unicode v7.0.0 NonAsciiIdentifierStart:
        NonAsciiIdentifierStart: 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        // ECMAScript 6/Unicode v7.0.0 NonAsciiIdentifierPart:
        NonAsciiIdentifierPart: /[\xAA\xB5\xB7\xBA\xC0-\xD6\xD8-\xF6\xF8-\u02C1\u02C6-\u02D1\u02E0-\u02E4\u02EC\u02EE\u0300-\u0374\u0376\u0377\u037A-\u037D\u037F\u0386-\u038A\u038C\u038E-\u03A1\u03A3-\u03F5\u03F7-\u0481\u0483-\u0487\u048A-\u052F\u0531-\u0556\u0559\u0561-\u0587\u0591-\u05BD\u05BF\u05C1\u05C2\u05C4\u05C5\u05C7\u05D0-\u05EA\u05F0-\u05F2\u0610-\u061A\u0620-\u0669\u066E-\u06D3\u06D5-\u06DC\u06DF-\u06E8\u06EA-\u06FC\u06FF\u0710-\u074A\u074D-\u07B1\u07C0-\u07F5\u07FA\u0800-\u082D\u0840-\u085B\u08A0-\u08B2\u08E4-\u0963\u0966-\u096F\u0971-\u0983\u0985-\u098C\u098F\u0990\u0993-\u09A8\u09AA-\u09B0\u09B2\u09B6-\u09B9\u09BC-\u09C4\u09C7\u09C8\u09CB-\u09CE\u09D7\u09DC\u09DD\u09DF-\u09E3\u09E6-\u09F1\u0A01-\u0A03\u0A05-\u0A0A\u0A0F\u0A10\u0A13-\u0A28\u0A2A-\u0A30\u0A32\u0A33\u0A35\u0A36\u0A38\u0A39\u0A3C\u0A3E-\u0A42\u0A47\u0A48\u0A4B-\u0A4D\u0A51\u0A59-\u0A5C\u0A5E\u0A66-\u0A75\u0A81-\u0A83\u0A85-\u0A8D\u0A8F-\u0A91\u0A93-\u0AA8\u0AAA-\u0AB0\u0AB2\u0AB3\u0AB5-\u0AB9\u0ABC-\u0AC5\u0AC7-\u0AC9\u0ACB-\u0ACD\u0AD0\u0AE0-\u0AE3\u0AE6-\u0AEF\u0B01-\u0B03\u0B05-\u0B0C\u0B0F\u0B10\u0B13-\u0B28\u0B2A-\u0B30\u0B32\u0B33\u0B35-\u0B39\u0B3C-\u0B44\u0B47\u0B48\u0B4B-\u0B4D\u0B56\u0B57\u0B5C\u0B5D\u0B5F-\u0B63\u0B66-\u0B6F\u0B71\u0B82\u0B83\u0B85-\u0B8A\u0B8E-\u0B90\u0B92-\u0B95\u0B99\u0B9A\u0B9C\u0B9E\u0B9F\u0BA3\u0BA4\u0BA8-\u0BAA\u0BAE-\u0BB9\u0BBE-\u0BC2\u0BC6-\u0BC8\u0BCA-\u0BCD\u0BD0\u0BD7\u0BE6-\u0BEF\u0C00-\u0C03\u0C05-\u0C0C\u0C0E-\u0C10\u0C12-\u0C28\u0C2A-\u0C39\u0C3D-\u0C44\u0C46-\u0C48\u0C4A-\u0C4D\u0C55\u0C56\u0C58\u0C59\u0C60-\u0C63\u0C66-\u0C6F\u0C81-\u0C83\u0C85-\u0C8C\u0C8E-\u0C90\u0C92-\u0CA8\u0CAA-\u0CB3\u0CB5-\u0CB9\u0CBC-\u0CC4\u0CC6-\u0CC8\u0CCA-\u0CCD\u0CD5\u0CD6\u0CDE\u0CE0-\u0CE3\u0CE6-\u0CEF\u0CF1\u0CF2\u0D01-\u0D03\u0D05-\u0D0C\u0D0E-\u0D10\u0D12-\u0D3A\u0D3D-\u0D44\u0D46-\u0D48\u0D4A-\u0D4E\u0D57\u0D60-\u0D63\u0D66-\u0D6F\u0D7A-\u0D7F\u0D82\u0D83\u0D85-\u0D96\u0D9A-\u0DB1\u0DB3-\u0DBB\u0DBD\u0DC0-\u0DC6\u0DCA\u0DCF-\u0DD4\u0DD6\u0DD8-\u0DDF\u0DE6-\u0DEF\u0DF2\u0DF3\u0E01-\u0E3A\u0E40-\u0E4E\u0E50-\u0E59\u0E81\u0E82\u0E84\u0E87\u0E88\u0E8A\u0E8D\u0E94-\u0E97\u0E99-\u0E9F\u0EA1-\u0EA3\u0EA5\u0EA7\u0EAA\u0EAB\u0EAD-\u0EB9\u0EBB-\u0EBD\u0EC0-\u0EC4\u0EC6\u0EC8-\u0ECD\u0ED0-\u0ED9\u0EDC-\u0EDF\u0F00\u0F18\u0F19\u0F20-\u0F29\u0F35\u0F37\u0F39\u0F3E-\u0F47\u0F49-\u0F6C\u0F71-\u0F84\u0F86-\u0F97\u0F99-\u0FBC\u0FC6\u1000-\u1049\u1050-\u109D\u10A0-\u10C5\u10C7\u10CD\u10D0-\u10FA\u10FC-\u1248\u124A-\u124D\u1250-\u1256\u1258\u125A-\u125D\u1260-\u1288\u128A-\u128D\u1290-\u12B0\u12B2-\u12B5\u12B8-\u12BE\u12C0\u12C2-\u12C5\u12C8-\u12D6\u12D8-\u1310\u1312-\u1315\u1318-\u135A\u135D-\u135F\u1369-\u1371\u1380-\u138F\u13A0-\u13F4\u1401-\u166C\u166F-\u167F\u1681-\u169A\u16A0-\u16EA\u16EE-\u16F8\u1700-\u170C\u170E-\u1714\u1720-\u1734\u1740-\u1753\u1760-\u176C\u176E-\u1770\u1772\u1773\u1780-\u17D3\u17D7\u17DC\u17DD\u17E0-\u17E9\u180B-\u180D\u1810-\u1819\u1820-\u1877\u1880-\u18AA\u18B0-\u18F5\u1900-\u191E\u1920-\u192B\u1930-\u193B\u1946-\u196D\u1970-\u1974\u1980-\u19AB\u19B0-\u19C9\u19D0-\u19DA\u1A00-\u1A1B\u1A20-\u1A5E\u1A60-\u1A7C\u1A7F-\u1A89\u1A90-\u1A99\u1AA7\u1AB0-\u1ABD\u1B00-\u1B4B\u1B50-\u1B59\u1B6B-\u1B73\u1B80-\u1BF3\u1C00-\u1C37\u1C40-\u1C49\u1C4D-\u1C7D\u1CD0-\u1CD2\u1CD4-\u1CF6\u1CF8\u1CF9\u1D00-\u1DF5\u1DFC-\u1F15\u1F18-\u1F1D\u1F20-\u1F45\u1F48-\u1F4D\u1F50-\u1F57\u1F59\u1F5B\u1F5D\u1F5F-\u1F7D\u1F80-\u1FB4\u1FB6-\u1FBC\u1FBE\u1FC2-\u1FC4\u1FC6-\u1FCC\u1FD0-\u1FD3\u1FD6-\u1FDB\u1FE0-\u1FEC\u1FF2-\u1FF4\u1FF6-\u1FFC\u200C\u200D\u203F\u2040\u2054\u2071\u207F\u2090-\u209C\u20D0-\u20DC\u20E1\u20E5-\u20F0\u2102\u2107\u210A-\u2113\u2115\u2118-\u211D\u2124\u2126\u2128\u212A-\u2139\u213C-\u213F\u2145-\u2149\u214E\u2160-\u2188\u2C00-\u2C2E\u2C30-\u2C5E\u2C60-\u2CE4\u2CEB-\u2CF3\u2D00-\u2D25\u2D27\u2D2D\u2D30-\u2D67\u2D6F\u2D7F-\u2D96\u2DA0-\u2DA6\u2DA8-\u2DAE\u2DB0-\u2DB6\u2DB8-\u2DBE\u2DC0-\u2DC6\u2DC8-\u2DCE\u2DD0-\u2DD6\u2DD8-\u2DDE\u2DE0-\u2DFF\u3005-\u3007\u3021-\u302F\u3031-\u3035\u3038-\u303C\u3041-\u3096\u3099-\u309F\u30A1-\u30FA\u30FC-\u30FF\u3105-\u312D\u3131-\u318E\u31A0-\u31BA\u31F0-\u31FF\u3400-\u4DB5\u4E00-\u9FCC\uA000-\uA48C\uA4D0-\uA4FD\uA500-\uA60C\uA610-\uA62B\uA640-\uA66F\uA674-\uA67D\uA67F-\uA69D\uA69F-\uA6F1\uA717-\uA71F\uA722-\uA788\uA78B-\uA78E\uA790-\uA7AD\uA7B0\uA7B1\uA7F7-\uA827\uA840-\uA873\uA880-\uA8C4\uA8D0-\uA8D9\uA8E0-\uA8F7\uA8FB\uA900-\uA92D\uA930-\uA953\uA960-\uA97C\uA980-\uA9C0\uA9CF-\uA9D9\uA9E0-\uA9FE\uAA00-\uAA36\uAA40-\uAA4D\uAA50-\uAA59\uAA60-\uAA76\uAA7A-\uAAC2\uAADB-\uAADD\uAAE0-\uAAEF\uAAF2-\uAAF6\uAB01-\uAB06\uAB09-\uAB0E\uAB11-\uAB16\uAB20-\uAB26\uAB28-\uAB2E\uAB30-\uAB5A\uAB5C-\uAB5F\uAB64\uAB65\uABC0-\uABEA\uABEC\uABED\uABF0-\uABF9\uAC00-\uD7A3\uD7B0-\uD7C6\uD7CB-\uD7FB\uF900-\uFA6D\uFA70-\uFAD9\uFB00-\uFB06\uFB13-\uFB17\uFB1D-\uFB28\uFB2A-\uFB36\uFB38-\uFB3C\uFB3E\uFB40\uFB41\uFB43\uFB44\uFB46-\uFBB1\uFBD3-\uFD3D\uFD50-\uFD8F\uFD92-\uFDC7\uFDF0-\uFDFB\uFE00-\uFE0F\uFE20-\uFE2D\uFE33\uFE34\uFE4D-\uFE4F\uFE70-\uFE74\uFE76-\uFEFC\uFF10-\uFF19\uFF21-\uFF3A\uFF3F\uFF41-\uFF5A\uFF66-\uFFBE\uFFC2-\uFFC7\uFFCA-\uFFCF\uFFD2-\uFFD7\uFFDA-\uFFDC]|\uD800[\uDC00-\uDC0B\uDC0D-\uDC26\uDC28-\uDC3A\uDC3C\uDC3D\uDC3F-\uDC4D\uDC50-\uDC5D\uDC80-\uDCFA\uDD40-\uDD74\uDDFD\uDE80-\uDE9C\uDEA0-\uDED0\uDEE0\uDF00-\uDF1F\uDF30-\uDF4A\uDF50-\uDF7A\uDF80-\uDF9D\uDFA0-\uDFC3\uDFC8-\uDFCF\uDFD1-\uDFD5]|\uD801[\uDC00-\uDC9D\uDCA0-\uDCA9\uDD00-\uDD27\uDD30-\uDD63\uDE00-\uDF36\uDF40-\uDF55\uDF60-\uDF67]|\uD802[\uDC00-\uDC05\uDC08\uDC0A-\uDC35\uDC37\uDC38\uDC3C\uDC3F-\uDC55\uDC60-\uDC76\uDC80-\uDC9E\uDD00-\uDD15\uDD20-\uDD39\uDD80-\uDDB7\uDDBE\uDDBF\uDE00-\uDE03\uDE05\uDE06\uDE0C-\uDE13\uDE15-\uDE17\uDE19-\uDE33\uDE38-\uDE3A\uDE3F\uDE60-\uDE7C\uDE80-\uDE9C\uDEC0-\uDEC7\uDEC9-\uDEE6\uDF00-\uDF35\uDF40-\uDF55\uDF60-\uDF72\uDF80-\uDF91]|\uD803[\uDC00-\uDC48]|\uD804[\uDC00-\uDC46\uDC66-\uDC6F\uDC7F-\uDCBA\uDCD0-\uDCE8\uDCF0-\uDCF9\uDD00-\uDD34\uDD36-\uDD3F\uDD50-\uDD73\uDD76\uDD80-\uDDC4\uDDD0-\uDDDA\uDE00-\uDE11\uDE13-\uDE37\uDEB0-\uDEEA\uDEF0-\uDEF9\uDF01-\uDF03\uDF05-\uDF0C\uDF0F\uDF10\uDF13-\uDF28\uDF2A-\uDF30\uDF32\uDF33\uDF35-\uDF39\uDF3C-\uDF44\uDF47\uDF48\uDF4B-\uDF4D\uDF57\uDF5D-\uDF63\uDF66-\uDF6C\uDF70-\uDF74]|\uD805[\uDC80-\uDCC5\uDCC7\uDCD0-\uDCD9\uDD80-\uDDB5\uDDB8-\uDDC0\uDE00-\uDE40\uDE44\uDE50-\uDE59\uDE80-\uDEB7\uDEC0-\uDEC9]|\uD806[\uDCA0-\uDCE9\uDCFF\uDEC0-\uDEF8]|\uD808[\uDC00-\uDF98]|\uD809[\uDC00-\uDC6E]|[\uD80C\uD840-\uD868\uD86A-\uD86C][\uDC00-\uDFFF]|\uD80D[\uDC00-\uDC2E]|\uD81A[\uDC00-\uDE38\uDE40-\uDE5E\uDE60-\uDE69\uDED0-\uDEED\uDEF0-\uDEF4\uDF00-\uDF36\uDF40-\uDF43\uDF50-\uDF59\uDF63-\uDF77\uDF7D-\uDF8F]|\uD81B[\uDF00-\uDF44\uDF50-\uDF7E\uDF8F-\uDF9F]|\uD82C[\uDC00\uDC01]|\uD82F[\uDC00-\uDC6A\uDC70-\uDC7C\uDC80-\uDC88\uDC90-\uDC99\uDC9D\uDC9E]|\uD834[\uDD65-\uDD69\uDD6D-\uDD72\uDD7B-\uDD82\uDD85-\uDD8B\uDDAA-\uDDAD\uDE42-\uDE44]|\uD835[\uDC00-\uDC54\uDC56-\uDC9C\uDC9E\uDC9F\uDCA2\uDCA5\uDCA6\uDCA9-\uDCAC\uDCAE-\uDCB9\uDCBB\uDCBD-\uDCC3\uDCC5-\uDD05\uDD07-\uDD0A\uDD0D-\uDD14\uDD16-\uDD1C\uDD1E-\uDD39\uDD3B-\uDD3E\uDD40-\uDD44\uDD46\uDD4A-\uDD50\uDD52-\uDEA5\uDEA8-\uDEC0\uDEC2-\uDEDA\uDEDC-\uDEFA\uDEFC-\uDF14\uDF16-\uDF34\uDF36-\uDF4E\uDF50-\uDF6E\uDF70-\uDF88\uDF8A-\uDFA8\uDFAA-\uDFC2\uDFC4-\uDFCB\uDFCE-\uDFFF]|\uD83A[\uDC00-\uDCC4\uDCD0-\uDCD6]|\uD83B[\uDE00-\uDE03\uDE05-\uDE1F\uDE21\uDE22\uDE24\uDE27\uDE29-\uDE32\uDE34-\uDE37\uDE39\uDE3B\uDE42\uDE47\uDE49\uDE4B\uDE4D-\uDE4F\uDE51\uDE52\uDE54\uDE57\uDE59\uDE5B\uDE5D\uDE5F\uDE61\uDE62\uDE64\uDE67-\uDE6A\uDE6C-\uDE72\uDE74-\uDE77\uDE79-\uDE7C\uDE7E\uDE80-\uDE89\uDE8B-\uDE9B\uDEA1-\uDEA3\uDEA5-\uDEA9\uDEAB-\uDEBB]|\uD869[\uDC00-\uDED6\uDF00-\uDFFF]|\uD86D[\uDC00-\uDF34\uDF40-\uDFFF]|\uD86E[\uDC00-\uDC1D]|\uD87E[\uDC00-\uDE1D]|\uDB40[\uDD00-\uDDEF]/
    };

    function isDecimalDigit(ch) {
        return 0x30 <= ch && ch <= 0x39;  // 0..9
    }

    function isHexDigit(ch) {
        return 0x30 <= ch && ch <= 0x39 ||  // 0..9
            0x61 <= ch && ch <= 0x66 ||     // a..f
            0x41 <= ch && ch <= 0x46;       // A..F
    }

    function isOctalDigit(ch) {
        return ch >= 0x30 && ch <= 0x37;  // 0..7
    }

    // 7.2 White Space

    NON_ASCII_WHITESPACES = [
        0x1680, 0x180E,
        0x2000, 0x2001, 0x2002, 0x2003, 0x2004, 0x2005, 0x2006, 0x2007, 0x2008, 0x2009, 0x200A,
        0x202F, 0x205F,
        0x3000,
        0xFEFF
    ];

    function isWhiteSpace(ch) {
        return ch === 0x20 || ch === 0x09 || ch === 0x0B || ch === 0x0C || ch === 0xA0 ||
            ch >= 0x1680 && NON_ASCII_WHITESPACES.indexOf(ch) >= 0;
    }

    // 7.3 Line Terminators

    function isLineTerminator(ch) {
        return ch === 0x0A || ch === 0x0D || ch === 0x2028 || ch === 0x2029;
    }

    // 7.6 Identifier Names and Identifiers

    function fromCodePoint(cp) {
        if (cp <= 0xFFFF) { return String.fromCharCode(cp); }
        var cu1 = String.fromCharCode(Math.floor((cp - 0x10000) / 0x400) + 0xD800);
        var cu2 = String.fromCharCode(((cp - 0x10000) % 0x400) + 0xDC00);
        return cu1 + cu2;
    }

    IDENTIFIER_START = new Array(0x80);
    for(ch = 0; ch < 0x80; ++ch) {
        IDENTIFIER_START[ch] =
            ch >= 0x61 && ch <= 0x7A ||  // a..z
            ch >= 0x41 && ch <= 0x5A ||  // A..Z
            ch === 0x24 || ch === 0x5F;  // $ (dollar) and _ (underscore)
    }

    IDENTIFIER_PART = new Array(0x80);
    for(ch = 0; ch < 0x80; ++ch) {
        IDENTIFIER_PART[ch] =
            ch >= 0x61 && ch <= 0x7A ||  // a..z
            ch >= 0x41 && ch <= 0x5A ||  // A..Z
            ch >= 0x30 && ch <= 0x39 ||  // 0..9
            ch === 0x24 || ch === 0x5F;  // $ (dollar) and _ (underscore)
    }

    function isIdentifierStartES5(ch) {
        return ch < 0x80 ? IDENTIFIER_START[ch] : ES5Regex.NonAsciiIdentifierStart.test(fromCodePoint(ch));
    }

    function isIdentifierPartES5(ch) {
        return ch < 0x80 ? IDENTIFIER_PART[ch] : ES5Regex.NonAsciiIdentifierPart.test(fromCodePoint(ch));
    }

    function isIdentifierStartES6(ch) {
        return ch < 0x80 ? IDENTIFIER_START[ch] : ES6Regex.NonAsciiIdentifierStart.test(fromCodePoint(ch));
    }

    function isIdentifierPartES6(ch) {
        return ch < 0x80 ? IDENTIFIER_PART[ch] : ES6Regex.NonAsciiIdentifierPart.test(fromCodePoint(ch));
    }

    module.exports = {
        isDecimalDigit: isDecimalDigit,
        isHexDigit: isHexDigit,
        isOctalDigit: isOctalDigit,
        isWhiteSpace: isWhiteSpace,
        isLineTerminator: isLineTerminator,
        isIdentifierStartES5: isIdentifierStartES5,
        isIdentifierPartES5: isIdentifierPartES5,
        isIdentifierStartES6: isIdentifierStartES6,
        isIdentifierPartES6: isIdentifierPartES6
    };
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{}],313:[function(require,module,exports){
/*
  Copyright (C) 2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

(function () {
    'use strict';

    var code = require('./code');

    function isStrictModeReservedWordES6(id) {
        switch (id) {
        case 'implements':
        case 'interface':
        case 'package':
        case 'private':
        case 'protected':
        case 'public':
        case 'static':
        case 'let':
            return true;
        default:
            return false;
        }
    }

    function isKeywordES5(id, strict) {
        // yield should not be treated as keyword under non-strict mode.
        if (!strict && id === 'yield') {
            return false;
        }
        return isKeywordES6(id, strict);
    }

    function isKeywordES6(id, strict) {
        if (strict && isStrictModeReservedWordES6(id)) {
            return true;
        }

        switch (id.length) {
        case 2:
            return (id === 'if') || (id === 'in') || (id === 'do');
        case 3:
            return (id === 'var') || (id === 'for') || (id === 'new') || (id === 'try');
        case 4:
            return (id === 'this') || (id === 'else') || (id === 'case') ||
                (id === 'void') || (id === 'with') || (id === 'enum');
        case 5:
            return (id === 'while') || (id === 'break') || (id === 'catch') ||
                (id === 'throw') || (id === 'const') || (id === 'yield') ||
                (id === 'class') || (id === 'super');
        case 6:
            return (id === 'return') || (id === 'typeof') || (id === 'delete') ||
                (id === 'switch') || (id === 'export') || (id === 'import');
        case 7:
            return (id === 'default') || (id === 'finally') || (id === 'extends');
        case 8:
            return (id === 'function') || (id === 'continue') || (id === 'debugger');
        case 10:
            return (id === 'instanceof');
        default:
            return false;
        }
    }

    function isReservedWordES5(id, strict) {
        return id === 'null' || id === 'true' || id === 'false' || isKeywordES5(id, strict);
    }

    function isReservedWordES6(id, strict) {
        return id === 'null' || id === 'true' || id === 'false' || isKeywordES6(id, strict);
    }

    function isRestrictedWord(id) {
        return id === 'eval' || id === 'arguments';
    }

    function isIdentifierNameES5(id) {
        var i, iz, ch;

        if (id.length === 0) { return false; }

        ch = id.charCodeAt(0);
        if (!code.isIdentifierStartES5(ch)) {
            return false;
        }

        for (i = 1, iz = id.length; i < iz; ++i) {
            ch = id.charCodeAt(i);
            if (!code.isIdentifierPartES5(ch)) {
                return false;
            }
        }
        return true;
    }

    function decodeUtf16(lead, trail) {
        return (lead - 0xD800) * 0x400 + (trail - 0xDC00) + 0x10000;
    }

    function isIdentifierNameES6(id) {
        var i, iz, ch, lowCh, check;

        if (id.length === 0) { return false; }

        check = code.isIdentifierStartES6;
        for (i = 0, iz = id.length; i < iz; ++i) {
            ch = id.charCodeAt(i);
            if (0xD800 <= ch && ch <= 0xDBFF) {
                ++i;
                if (i >= iz) { return false; }
                lowCh = id.charCodeAt(i);
                if (!(0xDC00 <= lowCh && lowCh <= 0xDFFF)) {
                    return false;
                }
                ch = decodeUtf16(ch, lowCh);
            }
            if (!check(ch)) {
                return false;
            }
            check = code.isIdentifierPartES6;
        }
        return true;
    }

    function isIdentifierES5(id, strict) {
        return isIdentifierNameES5(id) && !isReservedWordES5(id, strict);
    }

    function isIdentifierES6(id, strict) {
        return isIdentifierNameES6(id) && !isReservedWordES6(id, strict);
    }

    module.exports = {
        isKeywordES5: isKeywordES5,
        isKeywordES6: isKeywordES6,
        isReservedWordES5: isReservedWordES5,
        isReservedWordES6: isReservedWordES6,
        isRestrictedWord: isRestrictedWord,
        isIdentifierNameES5: isIdentifierNameES5,
        isIdentifierNameES6: isIdentifierNameES6,
        isIdentifierES5: isIdentifierES5,
        isIdentifierES6: isIdentifierES6
    };
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{"./code":312}],314:[function(require,module,exports){
/*
  Copyright (C) 2013 Yusuke Suzuki <utatane.tea@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/


(function () {
    'use strict';

    exports.ast = require('./ast');
    exports.code = require('./code');
    exports.keyword = require('./keyword');
}());
/* vim: set sw=4 ts=4 et tw=80 : */

},{"./ast":311,"./code":312,"./keyword":313}],315:[function(require,module,exports){
module.exports={
	"builtin": {
		"Array": false,
		"ArrayBuffer": false,
		"Boolean": false,
		"constructor": false,
		"Date": false,
		"decodeURI": false,
		"decodeURIComponent": false,
		"encodeURI": false,
		"encodeURIComponent": false,
		"Error": false,
		"eval": false,
		"EvalError": false,
		"Float32Array": false,
		"Float64Array": false,
		"Function": false,
		"hasOwnProperty": false,
		"Infinity": false,
		"Int16Array": false,
		"Int32Array": false,
		"Int8Array": false,
		"isFinite": false,
		"isNaN": false,
		"isPrototypeOf": false,
		"JSON": false,
		"Map": false,
		"Math": false,
		"NaN": false,
		"Number": false,
		"Object": false,
		"parseFloat": false,
		"parseInt": false,
		"Promise": false,
		"propertyIsEnumerable": false,
		"Proxy": false,
		"RangeError": false,
		"ReferenceError": false,
		"Reflect": false,
		"RegExp": false,
		"Set": false,
		"String": false,
		"Symbol": false,
		"SyntaxError": false,
		"System": false,
		"toLocaleString": false,
		"toString": false,
		"TypeError": false,
		"Uint16Array": false,
		"Uint32Array": false,
		"Uint8Array": false,
		"Uint8ClampedArray": false,
		"undefined": false,
		"URIError": false,
		"valueOf": false,
		"WeakMap": false,
		"WeakSet": false
	},
	"nonstandard": {
		"escape": false,
		"unescape": false
	},
	"browser": {
		"addEventListener": false,
		"alert": false,
		"applicationCache": false,
		"atob": false,
		"Audio": false,
		"AudioProcessingEvent": false,
		"BeforeUnloadEvent": false,
		"Blob": false,
		"blur": false,
		"btoa": false,
		"cancelAnimationFrame": false,
		"CanvasGradient": false,
		"CanvasPattern": false,
		"CanvasRenderingContext2D": false,
		"clearInterval": false,
		"clearTimeout": false,
		"close": false,
		"closed": false,
		"CloseEvent": false,
		"Comment": false,
		"CompositionEvent": false,
		"confirm": false,
		"console": false,
		"crypto": false,
		"CSS": false,
		"CustomEvent": false,
		"DataView": false,
		"Debug": false,
		"defaultStatus": false,
		"devicePixelRatio": false,
		"dispatchEvent": false,
		"document": false,
		"Document": false,
		"DocumentFragment": false,
		"DOMParser": false,
		"DragEvent": false,
		"Element": false,
		"ElementTimeControl": false,
		"ErrorEvent": false,
		"event": false,
		"Event": false,
		"FileReader": false,
		"fetch": false,
		"find": false,
		"focus": false,
		"FocusEvent": false,
		"FormData": false,
		"frameElement": false,
		"frames": false,
		"GamepadEvent": false,
		"getComputedStyle": false,
		"getSelection": false,
		"HashChangeEvent": false,
		"Headers": false,
		"history": false,
		"HTMLAnchorElement": false,
		"HTMLBaseElement": false,
		"HTMLBlockquoteElement": false,
		"HTMLBodyElement": false,
		"HTMLBRElement": false,
		"HTMLButtonElement": false,
		"HTMLCanvasElement": false,
		"HTMLDirectoryElement": false,
		"HTMLDivElement": false,
		"HTMLDListElement": false,
		"HTMLElement": false,
		"HTMLFieldSetElement": false,
		"HTMLFontElement": false,
		"HTMLFormElement": false,
		"HTMLFrameElement": false,
		"HTMLFrameSetElement": false,
		"HTMLHeadElement": false,
		"HTMLHeadingElement": false,
		"HTMLHRElement": false,
		"HTMLHtmlElement": false,
		"HTMLIFrameElement": false,
		"HTMLImageElement": false,
		"HTMLInputElement": false,
		"HTMLIsIndexElement": false,
		"HTMLLabelElement": false,
		"HTMLLayerElement": false,
		"HTMLLegendElement": false,
		"HTMLLIElement": false,
		"HTMLLinkElement": false,
		"HTMLMapElement": false,
		"HTMLMenuElement": false,
		"HTMLMetaElement": false,
		"HTMLModElement": false,
		"HTMLObjectElement": false,
		"HTMLOListElement": false,
		"HTMLOptGroupElement": false,
		"HTMLOptionElement": false,
		"HTMLParagraphElement": false,
		"HTMLParamElement": false,
		"HTMLPreElement": false,
		"HTMLQuoteElement": false,
		"HTMLScriptElement": false,
		"HTMLSelectElement": false,
		"HTMLStyleElement": false,
		"HTMLTableCaptionElement": false,
		"HTMLTableCellElement": false,
		"HTMLTableColElement": false,
		"HTMLTableElement": false,
		"HTMLTableRowElement": false,
		"HTMLTableSectionElement": false,
		"HTMLTextAreaElement": false,
		"HTMLTitleElement": false,
		"HTMLUListElement": false,
		"HTMLVideoElement": false,
		"IDBCursor": false,
		"IDBCursorWithValue": false,
		"IDBDatabase": false,
		"IDBEnvironment": false,
		"IDBFactory": false,
		"IDBIndex": false,
		"IDBKeyRange": false,
		"IDBObjectStore": false,
		"IDBOpenDBRequest": false,
		"IDBRequest": false,
		"IDBTransaction": false,
		"IDBVersionChangeEvent": false,
		"Image": false,
		"indexedDB": false,
		"innerHeight": false,
		"innerWidth": false,
		"InputEvent": false,
		"Intl": false,
		"KeyboardEvent": false,
		"length": false,
		"localStorage": false,
		"location": false,
		"matchMedia": false,
		"MessageChannel": false,
		"MessageEvent": false,
		"MessagePort": false,
		"MouseEvent": false,
		"moveBy": false,
		"moveTo": false,
		"MutationObserver": false,
		"name": false,
		"navigator": false,
		"Node": false,
		"NodeFilter": false,
		"NodeList": false,
		"Notification": false,
		"OfflineAudioCompletionEvent": false,
		"onbeforeunload": true,
		"onblur": true,
		"onerror": true,
		"onfocus": true,
		"onload": true,
		"onresize": true,
		"onunload": true,
		"open": false,
		"openDatabase": false,
		"opener": false,
		"opera": false,
		"Option": false,
		"outerHeight": false,
		"outerWidth": false,
		"PageTransitionEvent": false,
		"pageXOffset": false,
		"pageYOffset": false,
		"parent": false,
		"PopStateEvent": false,
		"postMessage": false,
		"print": false,
		"ProgressEvent": false,
		"prompt": false,
		"Range": false,
		"Request": false,
		"Response": false,
		"removeEventListener": false,
		"requestAnimationFrame": false,
		"resizeBy": false,
		"resizeTo": false,
		"screen": false,
		"screenX": false,
		"screenY": false,
		"scroll": false,
		"scrollbars": false,
		"scrollBy": false,
		"scrollTo": false,
		"scrollX": false,
		"scrollY": false,
		"self": false,
		"sessionStorage": false,
		"setInterval": false,
		"setTimeout": false,
		"SharedWorker": false,
		"showModalDialog": false,
		"status": false,
		"stop": false,
		"StorageEvent": false,
		"SVGAElement": false,
		"SVGAltGlyphDefElement": false,
		"SVGAltGlyphElement": false,
		"SVGAltGlyphItemElement": false,
		"SVGAngle": false,
		"SVGAnimateColorElement": false,
		"SVGAnimatedAngle": false,
		"SVGAnimatedBoolean": false,
		"SVGAnimatedEnumeration": false,
		"SVGAnimatedInteger": false,
		"SVGAnimatedLength": false,
		"SVGAnimatedLengthList": false,
		"SVGAnimatedNumber": false,
		"SVGAnimatedNumberList": false,
		"SVGAnimatedPathData": false,
		"SVGAnimatedPoints": false,
		"SVGAnimatedPreserveAspectRatio": false,
		"SVGAnimatedRect": false,
		"SVGAnimatedString": false,
		"SVGAnimatedTransformList": false,
		"SVGAnimateElement": false,
		"SVGAnimateMotionElement": false,
		"SVGAnimateTransformElement": false,
		"SVGAnimationElement": false,
		"SVGCircleElement": false,
		"SVGClipPathElement": false,
		"SVGColor": false,
		"SVGColorProfileElement": false,
		"SVGColorProfileRule": false,
		"SVGComponentTransferFunctionElement": false,
		"SVGCSSRule": false,
		"SVGCursorElement": false,
		"SVGDefsElement": false,
		"SVGDescElement": false,
		"SVGDocument": false,
		"SVGElement": false,
		"SVGElementInstance": false,
		"SVGElementInstanceList": false,
		"SVGEllipseElement": false,
		"SVGEvent": false,
		"SVGExternalResourcesRequired": false,
		"SVGFEBlendElement": false,
		"SVGFEColorMatrixElement": false,
		"SVGFEComponentTransferElement": false,
		"SVGFECompositeElement": false,
		"SVGFEConvolveMatrixElement": false,
		"SVGFEDiffuseLightingElement": false,
		"SVGFEDisplacementMapElement": false,
		"SVGFEDistantLightElement": false,
		"SVGFEFloodElement": false,
		"SVGFEFuncAElement": false,
		"SVGFEFuncBElement": false,
		"SVGFEFuncGElement": false,
		"SVGFEFuncRElement": false,
		"SVGFEGaussianBlurElement": false,
		"SVGFEImageElement": false,
		"SVGFEMergeElement": false,
		"SVGFEMergeNodeElement": false,
		"SVGFEMorphologyElement": false,
		"SVGFEOffsetElement": false,
		"SVGFEPointLightElement": false,
		"SVGFESpecularLightingElement": false,
		"SVGFESpotLightElement": false,
		"SVGFETileElement": false,
		"SVGFETurbulenceElement": false,
		"SVGFilterElement": false,
		"SVGFilterPrimitiveStandardAttributes": false,
		"SVGFitToViewBox": false,
		"SVGFontElement": false,
		"SVGFontFaceElement": false,
		"SVGFontFaceFormatElement": false,
		"SVGFontFaceNameElement": false,
		"SVGFontFaceSrcElement": false,
		"SVGFontFaceUriElement": false,
		"SVGForeignObjectElement": false,
		"SVGGElement": false,
		"SVGGlyphElement": false,
		"SVGGlyphRefElement": false,
		"SVGGradientElement": false,
		"SVGHKernElement": false,
		"SVGICCColor": false,
		"SVGImageElement": false,
		"SVGLangSpace": false,
		"SVGLength": false,
		"SVGLengthList": false,
		"SVGLinearGradientElement": false,
		"SVGLineElement": false,
		"SVGLocatable": false,
		"SVGMarkerElement": false,
		"SVGMaskElement": false,
		"SVGMatrix": false,
		"SVGMetadataElement": false,
		"SVGMissingGlyphElement": false,
		"SVGMPathElement": false,
		"SVGNumber": false,
		"SVGNumberList": false,
		"SVGPaint": false,
		"SVGPathElement": false,
		"SVGPathSeg": false,
		"SVGPathSegArcAbs": false,
		"SVGPathSegArcRel": false,
		"SVGPathSegClosePath": false,
		"SVGPathSegCurvetoCubicAbs": false,
		"SVGPathSegCurvetoCubicRel": false,
		"SVGPathSegCurvetoCubicSmoothAbs": false,
		"SVGPathSegCurvetoCubicSmoothRel": false,
		"SVGPathSegCurvetoQuadraticAbs": false,
		"SVGPathSegCurvetoQuadraticRel": false,
		"SVGPathSegCurvetoQuadraticSmoothAbs": false,
		"SVGPathSegCurvetoQuadraticSmoothRel": false,
		"SVGPathSegLinetoAbs": false,
		"SVGPathSegLinetoHorizontalAbs": false,
		"SVGPathSegLinetoHorizontalRel": false,
		"SVGPathSegLinetoRel": false,
		"SVGPathSegLinetoVerticalAbs": false,
		"SVGPathSegLinetoVerticalRel": false,
		"SVGPathSegList": false,
		"SVGPathSegMovetoAbs": false,
		"SVGPathSegMovetoRel": false,
		"SVGPatternElement": false,
		"SVGPoint": false,
		"SVGPointList": false,
		"SVGPolygonElement": false,
		"SVGPolylineElement": false,
		"SVGPreserveAspectRatio": false,
		"SVGRadialGradientElement": false,
		"SVGRect": false,
		"SVGRectElement": false,
		"SVGRenderingIntent": false,
		"SVGScriptElement": false,
		"SVGSetElement": false,
		"SVGStopElement": false,
		"SVGStringList": false,
		"SVGStylable": false,
		"SVGStyleElement": false,
		"SVGSVGElement": false,
		"SVGSwitchElement": false,
		"SVGSymbolElement": false,
		"SVGTests": false,
		"SVGTextContentElement": false,
		"SVGTextElement": false,
		"SVGTextPathElement": false,
		"SVGTextPositioningElement": false,
		"SVGTitleElement": false,
		"SVGTransform": false,
		"SVGTransformable": false,
		"SVGTransformList": false,
		"SVGTRefElement": false,
		"SVGTSpanElement": false,
		"SVGUnitTypes": false,
		"SVGURIReference": false,
		"SVGUseElement": false,
		"SVGViewElement": false,
		"SVGViewSpec": false,
		"SVGVKernElement": false,
		"SVGZoomAndPan": false,
		"Text": false,
		"TextDecoder": false,
		"TextEncoder": false,
		"TimeEvent": false,
		"top": false,
		"TouchEvent": false,
		"UIEvent": false,
		"URL": false,
		"WebGLActiveInfo": false,
		"WebGLBuffer": false,
		"WebGLContextEvent": false,
		"WebGLFramebuffer": false,
		"WebGLProgram": false,
		"WebGLRenderbuffer": false,
		"WebGLRenderingContext": false,
		"WebGLShader": false,
		"WebGLShaderPrecisionFormat": false,
		"WebGLTexture": false,
		"WebGLUniformLocation": false,
		"WebSocket": false,
		"WheelEvent": false,
		"window": false,
		"Window": false,
		"Worker": false,
		"XDomainRequest": false,
		"XMLHttpRequest": false,
		"XMLSerializer": false,
		"XPathEvaluator": false,
		"XPathException": false,
		"XPathExpression": false,
		"XPathNamespace": false,
		"XPathNSResolver": false,
		"XPathResult": false
	},
	"worker": {
		"importScripts": true,
		"postMessage": true,
		"self": true
	},
	"node": {
		"__dirname": false,
		"__filename": false,
		"arguments": false,
		"Buffer": false,
		"clearImmediate": false,
		"clearInterval": false,
		"clearTimeout": false,
		"console": false,
		"DataView": false,
		"exports": true,
		"GLOBAL": false,
		"global": false,
		"module": false,
		"process": false,
		"require": false,
		"setImmediate": false,
		"setInterval": false,
		"setTimeout": false
	},
	"amd": {
		"define": false,
		"require": false
	},
	"mocha": {
		"after": false,
		"afterEach": false,
		"before": false,
		"beforeEach": false,
		"context": false,
		"describe": false,
		"it": false,
		"setup": false,
		"specify": false,
		"suite": false,
		"suiteSetup": false,
		"suiteTeardown": false,
		"teardown": false,
		"test": false,
		"xcontext": false,
		"xdescribe": false,
		"xit": false,
		"xspecify": false
	},
	"jasmine": {
		"afterAll": false,
		"afterEach": false,
		"beforeAll": false,
		"beforeEach": false,
		"describe": false,
		"expect": false,
		"fail": false,
		"fdescribe": false,
		"fit": false,
		"it": false,
		"jasmine": false,
		"pending": false,
		"runs": false,
		"spyOn": false,
		"waits": false,
		"waitsFor": false,
		"xdescribe": false,
		"xit": false
	},
	"qunit": {
		"asyncTest": false,
		"deepEqual": false,
		"equal": false,
		"expect": false,
		"module": false,
		"notDeepEqual": false,
		"notEqual": false,
		"notPropEqual": false,
		"notStrictEqual": false,
		"ok": false,
		"propEqual": false,
		"QUnit": false,
		"raises": false,
		"start": false,
		"stop": false,
		"strictEqual": false,
		"test": false,
		"throws": false
	},
	"phantomjs": {
		"console": true,
		"exports": true,
		"phantom": true,
		"require": true,
		"WebPage": true
	},
	"couch": {
		"emit": false,
		"exports": false,
		"getRow": false,
		"log": false,
		"module": false,
		"provides": false,
		"require": false,
		"respond": false,
		"send": false,
		"start": false,
		"sum": false
	},
	"rhino": {
		"defineClass": false,
		"deserialize": false,
		"gc": false,
		"help": false,
		"importClass": false,
		"importPackage": false,
		"java": false,
		"load": false,
		"loadClass": false,
		"Packages": false,
		"print": false,
		"quit": false,
		"readFile": false,
		"readUrl": false,
		"runCommand": false,
		"seal": false,
		"serialize": false,
		"spawn": false,
		"sync": false,
		"toint32": false,
		"version": false
	},
	"wsh": {
		"ActiveXObject": true,
		"Enumerator": true,
		"GetObject": true,
		"ScriptEngine": true,
		"ScriptEngineBuildVersion": true,
		"ScriptEngineMajorVersion": true,
		"ScriptEngineMinorVersion": true,
		"VBArray": true,
		"WScript": true,
		"WSH": true,
		"XDomainRequest": true
	},
	"jquery": {
		"$": false,
		"jQuery": false
	},
	"yui": {
		"Y": false,
		"YUI": false,
		"YUI_config": false
	},
	"shelljs": {
		"cat": false,
		"cd": false,
		"chmod": false,
		"config": false,
		"cp": false,
		"dirs": false,
		"echo": false,
		"env": false,
		"error": false,
		"exec": false,
		"exit": false,
		"find": false,
		"grep": false,
		"ls": false,
		"mkdir": false,
		"mv": false,
		"popd": false,
		"pushd": false,
		"pwd": false,
		"rm": false,
		"sed": false,
		"target": false,
		"tempdir": false,
		"test": false,
		"which": false
	},
	"prototypejs": {
		"$": false,
		"$$": false,
		"$A": false,
		"$break": false,
		"$continue": false,
		"$F": false,
		"$H": false,
		"$R": false,
		"$w": false,
		"Abstract": false,
		"Ajax": false,
		"Autocompleter": false,
		"Builder": false,
		"Class": false,
		"Control": false,
		"Draggable": false,
		"Draggables": false,
		"Droppables": false,
		"Effect": false,
		"Element": false,
		"Enumerable": false,
		"Event": false,
		"Field": false,
		"Form": false,
		"Hash": false,
		"Insertion": false,
		"ObjectRange": false,
		"PeriodicalExecuter": false,
		"Position": false,
		"Prototype": false,
		"Scriptaculous": false,
		"Selector": false,
		"Sortable": false,
		"SortableObserver": false,
		"Sound": false,
		"Template": false,
		"Toggle": false,
		"Try": false
	},
	"meteor": {
		"$": false,
		"_": false,
		"Accounts": false,
		"App": false,
		"Assets": false,
		"Blaze": false,
		"check": false,
		"Cordova": false,
		"DDP": false,
		"DDPServer": false,
		"Deps": false,
		"EJSON": false,
		"Email": false,
		"HTTP": false,
		"Log": false,
		"Match": false,
		"Meteor": false,
		"Mongo": false,
		"MongoInternals": false,
		"Npm": false,
		"Package": false,
		"Plugin": false,
		"process": false,
		"Random": false,
		"ReactiveDict": false,
		"ReactiveVar": false,
		"Router": false,
		"Session": false,
		"share": false,
		"Spacebars": false,
		"Template": false,
		"Tinytest": false,
		"Tracker": false,
		"UI": false,
		"Utils": false,
		"WebApp": false,
		"WebAppInternals": false
	},
	"mongo": {
		"_isWindows": false,
		"_rand": false,
		"BulkWriteResult": false,
		"cat": false,
		"cd": false,
		"connect": false,
		"db": false,
		"getHostName": false,
		"getMemInfo": false,
		"hostname": false,
		"listFiles": false,
		"load": false,
		"ls": false,
		"md5sumFile": false,
		"mkdir": false,
		"Mongo": false,
		"ObjectId": false,
		"PlanCache": false,
		"pwd": false,
		"quit": false,
		"removeFile": false,
		"rs": false,
		"sh": false,
		"UUID": false,
		"version": false,
		"WriteResult": false
	},
	"applescript": {
		"$": false,
		"Application": false,
		"Automation": false,
		"console": false,
		"delay": false,
		"Library": false,
		"ObjC": false,
		"ObjectSpecifier": false,
		"Path": false,
		"Progress": false,
		"Ref": false
	}
}

},{}],316:[function(require,module,exports){
module.exports = require('./globals.json');

},{"./globals.json":315}],317:[function(require,module,exports){
// https://github.com/paulmillr/es6-shim
// http://people.mozilla.org/~jorendorff/es6-draft.html#sec-number.isinteger
var isNaN = require("is-nan");
var isFinite = require("is-finite");
module.exports = Number.isInteger || function(val) {
	return typeof val === "number" &&
		! isNaN(val) &&
		isFinite(val) &&
		parseInt(val, 10) === val;
};

},{"is-finite":318,"is-nan":319}],318:[function(require,module,exports){
'use strict';
module.exports = Number.isFinite || function (val) {
	// Number.isNaN() => val !== val
	if (typeof val !== 'number' || val !== val || val === Infinity || val === -Infinity) {
		return false;
	}

	return true;
};

},{}],319:[function(require,module,exports){
"use strict";

/* https://people.mozilla.org/~jorendorff/es6-draft.html#sec-number.isnan */

module.exports = function isNaN(value) {
	return value !== value;
};


},{}],320:[function(require,module,exports){
// Copyright 2014, 2015 Simon Lydell
// X11 (“MIT”) Licensed. (See LICENSE.)

// This regex comes from regex.coffee, and is inserted here by generate-index.js
// (run `npm run build`).
module.exports = /((['"])(?:(?!\2|\\).|\\(?:\r\n|[\s\S]))*(\2)?|`(?:[^`\\$]|\\[\s\S]|\$(?!\{)|\$\{(?:[^{}]|\{[^}]*\}?)*\}?)*(`)?)|(\/\/.*)|(\/\*(?:[^*]|\*(?!\/))*(\*\/)?)|(\/(?!\*)(?:\[(?:(?![\]\\]).|\\.)*\]|(?![\/\]\\]).|\\.)+\/(?:(?!\s*(?:\b|[\u0080-\uFFFF$\\'"~({]|[+\-!](?!=)|\.?\d))|[gmiyu]{1,5}\b(?![\u0080-\uFFFF$\\]|\s*(?:[+\-*%&|^<>!=?({]|\/(?![\/*])))))|((?:0[xX][\da-fA-F]+|0[oO][0-7]+|0[bB][01]+|(?:\d*\.\d+|\d+\.?)(?:[eE][+-]?\d+)?))|((?!\d)(?:(?!\s)[$\w\u0080-\uFFFF]|\\u[\da-fA-F]{4}|\\u\{[\da-fA-F]{1,6}\})+)|(--|\+\+|&&|\|\||=>|\.{3}|(?:[+\-*\/%&|^]|<{1,2}|>{1,3}|!=?|={1,2})=?|[?:~]|[;,.[\](){}])|(\s+)|(^$|[\s\S])/g

module.exports.matchToToken = function(match) {
  token = {type: "invalid", value: match[0]}
       if (match[ 1]) token.type = "string" , token.closed = !!(match[3] || match[4])
  else if (match[ 5]) token.type = "comment"
  else if (match[ 6]) token.type = "comment", token.closed = !!match[7]
  else if (match[ 8]) token.type = "regex"
  else if (match[ 9]) token.type = "number"
  else if (match[10]) token.type = "name"
  else if (match[11]) token.type = "punctuator"
  else if (match[12]) token.type = "whitespace"
  return token
}

},{}],321:[function(require,module,exports){
// intentionally commented out as it makes it slower...
//'use strict';

var arr = [];
var charCodeCache = [];

module.exports = function (a, b) {
	if (a === b) {
		return 0;
	}

	var aLen = a.length;
	var bLen = b.length;

	if (aLen === 0) {
		return bLen;
	}

	if (bLen === 0) {
		return aLen;
	}

	var bCharCode;
	var ret;
	var tmp;
	var tmp2;
	var i = 0;
	var j = 0;

	while (i < aLen) {
		charCodeCache[i] = a.charCodeAt(i);
		arr[i] = ++i;
	}

	while (j < bLen) {
		bCharCode = b.charCodeAt(j);
		tmp = j++;
		ret = j;

		for (i = 0; i < aLen; i++) {
			tmp2 = bCharCode === charCodeCache[i] ? tmp : tmp + 1;
			tmp = arr[i];
			ret = arr[i] = tmp > ret ? tmp2 > ret ? ret + 1 : tmp2 : tmp2 > tmp ? tmp + 1 : tmp2;
		}
	}

	return ret;
};

},{}],322:[function(require,module,exports){
// Copyright 2014, 2015 Simon Lydell
// X11 (“MIT”) Licensed. (See LICENSE.)

var leftPad = require("left-pad")

function get(options, key, defaultValue) {
  return (key in options ? options[key] : defaultValue)
}

function lineNumbers(code, options) {
  var getOption = get.bind(null, options || {})
  var transform = getOption("transform", Function.prototype)
  var padding   = getOption("padding", " ")
  var before    = getOption("before", " ")
  var after     = getOption("after", " | ")
  var start     = getOption("start", 1)
  var isArray   = Array.isArray(code)
  var lines     = (isArray ? code : code.split("\n"))
  var end       = start + lines.length - 1
  var width     = String(end).length
  var numbered  = lines.map(function(line, index) {
    var number  = start + index
    var params  = {before: before, number: number, width: width, after: after,
                   line: line}
    transform(params)
    return params.before + leftPad(params.number, width, padding) +
           params.after + params.line
  })
  return (isArray ? numbered : numbered.join("\n"))
}

module.exports = lineNumbers

},{"left-pad":323}],323:[function(require,module,exports){
module.exports = leftpad;

function leftpad (str, len, ch) {
  str = String(str);

  var i = -1;

  ch || (ch = ' ');
  len = len - str.length;


  while (++i < len) {
    str = ch + str;
  }

  return str;
}

},{}],324:[function(require,module,exports){
/**
 * Creates an array with all falsey values removed. The values `false`, `null`,
 * `0`, `""`, `undefined`, and `NaN` are falsey.
 *
 * @static
 * @memberOf _
 * @category Array
 * @param {Array} array The array to compact.
 * @returns {Array} Returns the new array of filtered values.
 * @example
 *
 * _.compact([0, 1, false, 2, '', 3]);
 * // => [1, 2, 3]
 */
function compact(array) {
  var index = -1,
      length = array ? array.length : 0,
      resIndex = -1,
      result = [];

  while (++index < length) {
    var value = array[index];
    if (value) {
      result[++resIndex] = value;
    }
  }
  return result;
}

module.exports = compact;

},{}],325:[function(require,module,exports){
var baseFlatten = require('../internal/baseFlatten'),
    isIterateeCall = require('../internal/isIterateeCall');

/**
 * Flattens a nested array. If `isDeep` is `true` the array is recursively
 * flattened, otherwise it is only flattened a single level.
 *
 * @static
 * @memberOf _
 * @category Array
 * @param {Array} array The array to flatten.
 * @param {boolean} [isDeep] Specify a deep flatten.
 * @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
 * @returns {Array} Returns the new flattened array.
 * @example
 *
 * _.flatten([1, [2, 3, [4]]]);
 * // => [1, 2, 3, [4]]
 *
 * // using `isDeep`
 * _.flatten([1, [2, 3, [4]]], true);
 * // => [1, 2, 3, 4]
 */
function flatten(array, isDeep, guard) {
  var length = array ? array.length : 0;
  if (guard && isIterateeCall(array, isDeep, guard)) {
    isDeep = false;
  }
  return length ? baseFlatten(array, isDeep) : [];
}

module.exports = flatten;

},{"../internal/baseFlatten":352,"../internal/isIterateeCall":394}],326:[function(require,module,exports){
/**
 * Gets the last element of `array`.
 *
 * @static
 * @memberOf _
 * @category Array
 * @param {Array} array The array to query.
 * @returns {*} Returns the last element of `array`.
 * @example
 *
 * _.last([1, 2, 3]);
 * // => 3
 */
function last(array) {
  var length = array ? array.length : 0;
  return length ? array[length - 1] : undefined;
}

module.exports = last;

},{}],327:[function(require,module,exports){
var baseIndexOf = require('../internal/baseIndexOf');

/** Used for native method references. */
var arrayProto = Array.prototype;

/** Native method references. */
var splice = arrayProto.splice;

/**
 * Removes all provided values from `array` using `SameValueZero` for equality
 * comparisons.
 *
 * **Notes:**
 *  - Unlike `_.without`, this method mutates `array`
 *  - [`SameValueZero`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-samevaluezero)
 *    comparisons are like strict equality comparisons, e.g. `===`, except
 *    that `NaN` matches `NaN`
 *
 * @static
 * @memberOf _
 * @category Array
 * @param {Array} array The array to modify.
 * @param {...*} [values] The values to remove.
 * @returns {Array} Returns `array`.
 * @example
 *
 * var array = [1, 2, 3, 1, 2, 3];
 *
 * _.pull(array, 2, 3);
 * console.log(array);
 * // => [1, 1]
 */
function pull() {
  var args = arguments,
      array = args[0];

  if (!(array && array.length)) {
    return array;
  }
  var index = 0,
      indexOf = baseIndexOf,
      length = args.length;

  while (++index < length) {
    var fromIndex = 0,
        value = args[index];

    while ((fromIndex = indexOf(array, value, fromIndex)) > -1) {
      splice.call(array, fromIndex, 1);
    }
  }
  return array;
}

module.exports = pull;

},{"../internal/baseIndexOf":358}],328:[function(require,module,exports){
var baseCallback = require('../internal/baseCallback'),
    baseUniq = require('../internal/baseUniq'),
    isIterateeCall = require('../internal/isIterateeCall'),
    sortedUniq = require('../internal/sortedUniq');

/**
 * Creates a duplicate-value-free version of an array using `SameValueZero`
 * for equality comparisons. Providing `true` for `isSorted` performs a faster
 * search algorithm for sorted arrays. If an iteratee function is provided it
 * is invoked for each value in the array to generate the criterion by which
 * uniqueness is computed. The `iteratee` is bound to `thisArg` and invoked
 * with three arguments: (value, index, array).
 *
 * If a property name is provided for `iteratee` the created `_.property`
 * style callback returns the property value of the given element.
 *
 * If a value is also provided for `thisArg` the created `_.matchesProperty`
 * style callback returns `true` for elements that have a matching property
 * value, else `false`.
 *
 * If an object is provided for `iteratee` the created `_.matches` style
 * callback returns `true` for elements that have the properties of the given
 * object, else `false`.
 *
 * **Note:** [`SameValueZero`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-samevaluezero)
 * comparisons are like strict equality comparisons, e.g. `===`, except that
 * `NaN` matches `NaN`.
 *
 * @static
 * @memberOf _
 * @alias unique
 * @category Array
 * @param {Array} array The array to inspect.
 * @param {boolean} [isSorted] Specify the array is sorted.
 * @param {Function|Object|string} [iteratee] The function invoked per iteration.
 * @param {*} [thisArg] The `this` binding of `iteratee`.
 * @returns {Array} Returns the new duplicate-value-free array.
 * @example
 *
 * _.uniq([1, 2, 1]);
 * // => [1, 2]
 *
 * // using `isSorted`
 * _.uniq([1, 1, 2], true);
 * // => [1, 2]
 *
 * // using an iteratee function
 * _.uniq([1, 2.5, 1.5, 2], function(n) {
 *   return this.floor(n);
 * }, Math);
 * // => [1, 2.5]
 *
 * // using the `_.property` callback shorthand
 * _.uniq([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x');
 * // => [{ 'x': 1 }, { 'x': 2 }]
 */
function uniq(array, isSorted, iteratee, thisArg) {
  var length = array ? array.length : 0;
  if (!length) {
    return [];
  }
  if (isSorted != null && typeof isSorted != 'boolean') {
    thisArg = iteratee;
    iteratee = isIterateeCall(array, isSorted, thisArg) ? null : isSorted;
    isSorted = false;
  }
  iteratee = iteratee == null ? iteratee : baseCallback(iteratee, thisArg, 3);
  return (isSorted)
    ? sortedUniq(array, iteratee)
    : baseUniq(array, iteratee);
}

module.exports = uniq;

},{"../internal/baseCallback":346,"../internal/baseUniq":373,"../internal/isIterateeCall":394,"../internal/sortedUniq":400}],329:[function(require,module,exports){
module.exports = require('./includes');

},{"./includes":332}],330:[function(require,module,exports){
module.exports = require('./forEach');

},{"./forEach":331}],331:[function(require,module,exports){
var arrayEach = require('../internal/arrayEach'),
    baseEach = require('../internal/baseEach'),
    createForEach = require('../internal/createForEach');

/**
 * Iterates over elements of `collection` invoking `iteratee` for each element.
 * The `iteratee` is bound to `thisArg` and invoked with three arguments:
 * (value, index|key, collection). Iterator functions may exit iteration early
 * by explicitly returning `false`.
 *
 * **Note:** As with other "Collections" methods, objects with a `length` property
 * are iterated like arrays. To avoid this behavior `_.forIn` or `_.forOwn`
 * may be used for object iteration.
 *
 * @static
 * @memberOf _
 * @alias each
 * @category Collection
 * @param {Array|Object|string} collection The collection to iterate over.
 * @param {Function} [iteratee=_.identity] The function invoked per iteration.
 * @param {*} [thisArg] The `this` binding of `iteratee`.
 * @returns {Array|Object|string} Returns `collection`.
 * @example
 *
 * _([1, 2]).forEach(function(n) {
 *   console.log(n);
 * }).value();
 * // => logs each value from left to right and returns the array
 *
 * _.forEach({ 'a': 1, 'b': 2 }, function(n, key) {
 *   console.log(n, key);
 * });
 * // => logs each value-key pair and returns the object (iteration order is not guaranteed)
 */
var forEach = createForEach(arrayEach, baseEach);

module.exports = forEach;

},{"../internal/arrayEach":340,"../internal/baseEach":350,"../internal/createForEach":384}],332:[function(require,module,exports){
var baseIndexOf = require('../internal/baseIndexOf'),
    isArray = require('../lang/isArray'),
    isIterateeCall = require('../internal/isIterateeCall'),
    isLength = require('../internal/isLength'),
    isString = require('../lang/isString'),
    values = require('../object/values');

/* Native method references for those with the same name as other `lodash` methods. */
var nativeMax = Math.max;

/**
 * Checks if `value` is in `collection` using `SameValueZero` for equality
 * comparisons. If `fromIndex` is negative, it is used as the offset from
 * the end of `collection`.
 *
 * **Note:** [`SameValueZero`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-samevaluezero)
 * comparisons are like strict equality comparisons, e.g. `===`, except that
 * `NaN` matches `NaN`.
 *
 * @static
 * @memberOf _
 * @alias contains, include
 * @category Collection
 * @param {Array|Object|string} collection The collection to search.
 * @param {*} target The value to search for.
 * @param {number} [fromIndex=0] The index to search from.
 * @param- {Object} [guard] Enables use as a callback for functions like `_.reduce`.
 * @returns {boolean} Returns `true` if a matching element is found, else `false`.
 * @example
 *
 * _.includes([1, 2, 3], 1);
 * // => true
 *
 * _.includes([1, 2, 3], 1, 2);
 * // => false
 *
 * _.includes({ 'user': 'fred', 'age': 40 }, 'fred');
 * // => true
 *
 * _.includes('pebbles', 'eb');
 * // => true
 */
function includes(collection, target, fromIndex, guard) {
  var length = collection ? collection.length : 0;
  if (!isLength(length)) {
    collection = values(collection);
    length = collection.length;
  }
  if (!length) {
    return false;
  }
  if (typeof fromIndex != 'number' || (guard && isIterateeCall(target, fromIndex, guard))) {
    fromIndex = 0;
  } else {
    fromIndex = fromIndex < 0 ? nativeMax(length + fromIndex, 0) : (fromIndex || 0);
  }
  return (typeof collection == 'string' || !isArray(collection) && isString(collection))
    ? (fromIndex < length && collection.indexOf(target, fromIndex) > -1)
    : (baseIndexOf(collection, target, fromIndex) > -1);
}

module.exports = includes;

},{"../internal/baseIndexOf":358,"../internal/isIterateeCall":394,"../internal/isLength":395,"../lang/isArray":405,"../lang/isString":414,"../object/values":424}],333:[function(require,module,exports){
var arrayMap = require('../internal/arrayMap'),
    baseCallback = require('../internal/baseCallback'),
    baseMap = require('../internal/baseMap'),
    isArray = require('../lang/isArray');

/**
 * Creates an array of values by running each element in `collection` through
 * `iteratee`. The `iteratee` is bound to `thisArg` and invoked with three
 * arguments: (value, index|key, collection).
 *
 * If a property name is provided for `iteratee` the created `_.property`
 * style callback returns the property value of the given element.
 *
 * If a value is also provided for `thisArg` the created `_.matchesProperty`
 * style callback returns `true` for elements that have a matching property
 * value, else `false`.
 *
 * If an object is provided for `iteratee` the created `_.matches` style
 * callback returns `true` for elements that have the properties of the given
 * object, else `false`.
 *
 * Many lodash methods are guarded to work as interatees for methods like
 * `_.every`, `_.filter`, `_.map`, `_.mapValues`, `_.reject`, and `_.some`.
 *
 * The guarded methods are:
 * `ary`, `callback`, `chunk`, `clone`, `create`, `curry`, `curryRight`, `drop`,
 * `dropRight`, `every`, `fill`, `flatten`, `invert`, `max`, `min`, `parseInt`,
 * `slice`, `sortBy`, `take`, `takeRight`, `template`, `trim`, `trimLeft`,
 * `trimRight`, `trunc`, `random`, `range`, `sample`, `some`, `uniq`, and `words`
 *
 * @static
 * @memberOf _
 * @alias collect
 * @category Collection
 * @param {Array|Object|string} collection The collection to iterate over.
 * @param {Function|Object|string} [iteratee=_.identity] The function invoked
 *  per iteration.
 *  create a `_.property` or `_.matches` style callback respectively.
 * @param {*} [thisArg] The `this` binding of `iteratee`.
 * @returns {Array} Returns the new mapped array.
 * @example
 *
 * function timesThree(n) {
 *   return n * 3;
 * }
 *
 * _.map([1, 2], timesThree);
 * // => [3, 6]
 *
 * _.map({ 'a': 1, 'b': 2 }, timesThree);
 * // => [3, 6] (iteration order is not guaranteed)
 *
 * var users = [
 *   { 'user': 'barney' },
 *   { 'user': 'fred' }
 * ];
 *
 * // using the `_.property` callback shorthand
 * _.map(users, 'user');
 * // => ['barney', 'fred']
 */
function map(collection, iteratee, thisArg) {
  var func = isArray(collection) ? arrayMap : baseMap;
  iteratee = baseCallback(iteratee, thisArg, 3);
  return func(collection, iteratee);
}

module.exports = map;

},{"../internal/arrayMap":341,"../internal/baseCallback":346,"../internal/baseMap":363,"../lang/isArray":405}],334:[function(require,module,exports){
var arrayReduceRight = require('../internal/arrayReduceRight'),
    baseEachRight = require('../internal/baseEachRight'),
    createReduce = require('../internal/createReduce');

/**
 * This method is like `_.reduce` except that it iterates over elements of
 * `collection` from right to left.
 *
 * @static
 * @memberOf _
 * @alias foldr
 * @category Collection
 * @param {Array|Object|string} collection The collection to iterate over.
 * @param {Function} [iteratee=_.identity] The function invoked per iteration.
 * @param {*} [accumulator] The initial value.
 * @param {*} [thisArg] The `this` binding of `iteratee`.
 * @returns {*} Returns the accumulated value.
 * @example
 *
 * var array = [[0, 1], [2, 3], [4, 5]];
 *
 * _.reduceRight(array, function(flattened, other) {
 *   return flattened.concat(other);
 * }, []);
 * // => [4, 5, 2, 3, 0, 1]
 */
var reduceRight =  createReduce(arrayReduceRight, baseEachRight);

module.exports = reduceRight;

},{"../internal/arrayReduceRight":342,"../internal/baseEachRight":351,"../internal/createReduce":385}],335:[function(require,module,exports){
var arraySome = require('../internal/arraySome'),
    baseCallback = require('../internal/baseCallback'),
    baseSome = require('../internal/baseSome'),
    isArray = require('../lang/isArray'),
    isIterateeCall = require('../internal/isIterateeCall');

/**
 * Checks if `predicate` returns truthy for **any** element of `collection`.
 * The function returns as soon as it finds a passing value and does not iterate
 * over the entire collection. The predicate is bound to `thisArg` and invoked
 * with three arguments: (value, index|key, collection).
 *
 * If a property name is provided for `predicate` the created `_.property`
 * style callback returns the property value of the given element.
 *
 * If a value is also provided for `thisArg` the created `_.matchesProperty`
 * style callback returns `true` for elements that have a matching property
 * value, else `false`.
 *
 * If an object is provided for `predicate` the created `_.matches` style
 * callback returns `true` for elements that have the properties of the given
 * object, else `false`.
 *
 * @static
 * @memberOf _
 * @alias any
 * @category Collection
 * @param {Array|Object|string} collection The collection to iterate over.
 * @param {Function|Object|string} [predicate=_.identity] The function invoked
 *  per iteration.
 * @param {*} [thisArg] The `this` binding of `predicate`.
 * @returns {boolean} Returns `true` if any element passes the predicate check,
 *  else `false`.
 * @example
 *
 * _.some([null, 0, 'yes', false], Boolean);
 * // => true
 *
 * var users = [
 *   { 'user': 'barney', 'active': true },
 *   { 'user': 'fred',   'active': false }
 * ];
 *
 * // using the `_.matches` callback shorthand
 * _.some(users, { 'user': 'barney', 'active': false });
 * // => false
 *
 * // using the `_.matchesProperty` callback shorthand
 * _.some(users, 'active', false);
 * // => true
 *
 * // using the `_.property` callback shorthand
 * _.some(users, 'active');
 * // => true
 */
function some(collection, predicate, thisArg) {
  var func = isArray(collection) ? arraySome : baseSome;
  if (thisArg && isIterateeCall(collection, predicate, thisArg)) {
    predicate = null;
  }
  if (typeof predicate != 'function' || typeof thisArg != 'undefined') {
    predicate = baseCallback(predicate, thisArg, 3);
  }
  return func(collection, predicate);
}

module.exports = some;

},{"../internal/arraySome":343,"../internal/baseCallback":346,"../internal/baseSome":370,"../internal/isIterateeCall":394,"../lang/isArray":405}],336:[function(require,module,exports){
var baseCallback = require('../internal/baseCallback'),
    baseEach = require('../internal/baseEach'),
    baseSortBy = require('../internal/baseSortBy'),
    compareAscending = require('../internal/compareAscending'),
    isIterateeCall = require('../internal/isIterateeCall'),
    isLength = require('../internal/isLength');

/**
 * Creates an array of elements, sorted in ascending order by the results of
 * running each element in a collection through `iteratee`. This method performs
 * a stable sort, that is, it preserves the original sort order of equal elements.
 * The `iteratee` is bound to `thisArg` and invoked with three arguments:
 * (value, index|key, collection).
 *
 * If a property name is provided for `iteratee` the created `_.property`
 * style callback returns the property value of the given element.
 *
 * If a value is also provided for `thisArg` the created `_.matchesProperty`
 * style callback returns `true` for elements that have a matching property
 * value, else `false`.
 *
 * If an object is provided for `iteratee` the created `_.matches` style
 * callback returns `true` for elements that have the properties of the given
 * object, else `false`.
 *
 * @static
 * @memberOf _
 * @category Collection
 * @param {Array|Object|string} collection The collection to iterate over.
 * @param {Array|Function|Object|string} [iteratee=_.identity] The function
 *  invoked per iteration. If a property name or an object is provided it is
 *  used to create a `_.property` or `_.matches` style callback respectively.
 * @param {*} [thisArg] The `this` binding of `iteratee`.
 * @returns {Array} Returns the new sorted array.
 * @example
 *
 * _.sortBy([1, 2, 3], function(n) {
 *   return Math.sin(n);
 * });
 * // => [3, 1, 2]
 *
 * _.sortBy([1, 2, 3], function(n) {
 *   return this.sin(n);
 * }, Math);
 * // => [3, 1, 2]
 *
 * var users = [
 *   { 'user': 'fred' },
 *   { 'user': 'pebbles' },
 *   { 'user': 'barney' }
 * ];
 *
 * // using the `_.property` callback shorthand
 * _.pluck(_.sortBy(users, 'user'), 'user');
 * // => ['barney', 'fred', 'pebbles']
 */
function sortBy(collection, iteratee, thisArg) {
  if (collection == null) {
    return [];
  }
  var index = -1,
      length = collection.length,
      result = isLength(length) ? Array(length) : [];

  if (thisArg && isIterateeCall(collection, iteratee, thisArg)) {
    iteratee = null;
  }
  iteratee = baseCallback(iteratee, thisArg, 3);
  baseEach(collection, function(value, key, collection) {
    result[++index] = { 'criteria': iteratee(value, key, collection), 'index': index, 'value': value };
  });
  return baseSortBy(result, compareAscending);
}

module.exports = sortBy;

},{"../internal/baseCallback":346,"../internal/baseEach":350,"../internal/baseSortBy":371,"../internal/compareAscending":379,"../internal/isIterateeCall":394,"../internal/isLength":395}],337:[function(require,module,exports){
/** Used as the `TypeError` message for "Functions" methods. */
var FUNC_ERROR_TEXT = 'Expected a function';

/* Native method references for those with the same name as other `lodash` methods. */
var nativeMax = Math.max;

/**
 * Creates a function that invokes `func` with the `this` binding of the
 * created function and arguments from `start` and beyond provided as an array.
 *
 * **Note:** This method is based on the [rest parameter](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/rest_parameters).
 *
 * @static
 * @memberOf _
 * @category Function
 * @param {Function} func The function to apply a rest parameter to.
 * @param {number} [start=func.length-1] The start position of the rest parameter.
 * @returns {Function} Returns the new function.
 * @example
 *
 * var say = _.restParam(function(what, names) {
 *   return what + ' ' + _.initial(names).join(', ') +
 *     (_.size(names) > 1 ? ', & ' : '') + _.last(names);
 * });
 *
 * say('hello', 'fred', 'barney', 'pebbles');
 * // => 'hello fred, barney, & pebbles'
 */
function restParam(func, start) {
  if (typeof func != 'function') {
    throw new TypeError(FUNC_ERROR_TEXT);
  }
  start = nativeMax(typeof start == 'undefined' ? (func.length - 1) : (+start || 0), 0);
  return function() {
    var args = arguments,
        index = -1,
        length = nativeMax(args.length - start, 0),
        rest = Array(length);

    while (++index < length) {
      rest[index] = args[start + index];
    }
    switch (start) {
      case 0: return func.call(this, rest);
      case 1: return func.call(this, args[0], rest);
      case 2: return func.call(this, args[0], args[1], rest);
    }
    var otherArgs = Array(start + 1);
    index = -1;
    while (++index < start) {
      otherArgs[index] = args[index];
    }
    otherArgs[start] = rest;
    return func.apply(this, otherArgs);
  };
}

module.exports = restParam;

},{}],338:[function(require,module,exports){
(function (global){
var cachePush = require('./cachePush'),
    isNative = require('../lang/isNative');

/** Native method references. */
var Set = isNative(Set = global.Set) && Set;

/* Native method references for those with the same name as other `lodash` methods. */
var nativeCreate = isNative(nativeCreate = Object.create) && nativeCreate;

/**
 *
 * Creates a cache object to store unique values.
 *
 * @private
 * @param {Array} [values] The values to cache.
 */
function SetCache(values) {
  var length = values ? values.length : 0;

  this.data = { 'hash': nativeCreate(null), 'set': new Set };
  while (length--) {
    this.push(values[length]);
  }
}

// Add functions to the `Set` cache.
SetCache.prototype.push = cachePush;

module.exports = SetCache;

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../lang/isNative":409,"./cachePush":378}],339:[function(require,module,exports){
/**
 * Copies the values of `source` to `array`.
 *
 * @private
 * @param {Array} source The array to copy values from.
 * @param {Array} [array=[]] The array to copy values to.
 * @returns {Array} Returns `array`.
 */
function arrayCopy(source, array) {
  var index = -1,
      length = source.length;

  array || (array = Array(length));
  while (++index < length) {
    array[index] = source[index];
  }
  return array;
}

module.exports = arrayCopy;

},{}],340:[function(require,module,exports){
/**
 * A specialized version of `_.forEach` for arrays without support for callback
 * shorthands and `this` binding.
 *
 * @private
 * @param {Array} array The array to iterate over.
 * @param {Function} iteratee The function invoked per iteration.
 * @returns {Array} Returns `array`.
 */
function arrayEach(array, iteratee) {
  var index = -1,
      length = array.length;

  while (++index < length) {
    if (iteratee(array[index], index, array) === false) {
      break;
    }
  }
  return array;
}

module.exports = arrayEach;

},{}],341:[function(require,module,exports){
/**
 * A specialized version of `_.map` for arrays without support for callback
 * shorthands and `this` binding.
 *
 * @private
 * @param {Array} array The array to iterate over.
 * @param {Function} iteratee The function invoked per iteration.
 * @returns {Array} Returns the new mapped array.
 */
function arrayMap(array, iteratee) {
  var index = -1,
      length = array.length,
      result = Array(length);

  while (++index < length) {
    result[index] = iteratee(array[index], index, array);
  }
  return result;
}

module.exports = arrayMap;

},{}],342:[function(require,module,exports){
/**
 * A specialized version of `_.reduceRight` for arrays without support for
 * callback shorthands and `this` binding.
 *
 * @private
 * @param {Array} array The array to iterate over.
 * @param {Function} iteratee The function invoked per iteration.
 * @param {*} [accumulator] The initial value.
 * @param {boolean} [initFromArray] Specify using the last element of `array`
 *  as the initial value.
 * @returns {*} Returns the accumulated value.
 */
function arrayReduceRight(array, iteratee, accumulator, initFromArray) {
  var length = array.length;
  if (initFromArray && length) {
    accumulator = array[--length];
  }
  while (length--) {
    accumulator = iteratee(accumulator, array[length], length, array);
  }
  return accumulator;
}

module.exports = arrayReduceRight;

},{}],343:[function(require,module,exports){
/**
 * A specialized version of `_.some` for arrays without support for callback
 * shorthands and `this` binding.
 *
 * @private
 * @param {Array} array The array to iterate over.
 * @param {Function} predicate The function invoked per iteration.
 * @returns {boolean} Returns `true` if any element passes the predicate check,
 *  else `false`.
 */
function arraySome(array, predicate) {
  var index = -1,
      length = array.length;

  while (++index < length) {
    if (predicate(array[index], index, array)) {
      return true;
    }
  }
  return false;
}

module.exports = arraySome;

},{}],344:[function(require,module,exports){
/**
 * Used by `_.defaults` to customize its `_.assign` use.
 *
 * @private
 * @param {*} objectValue The destination object property value.
 * @param {*} sourceValue The source object property value.
 * @returns {*} Returns the value to assign to the destination object.
 */
function assignDefaults(objectValue, sourceValue) {
  return typeof objectValue == 'undefined' ? sourceValue : objectValue;
}

module.exports = assignDefaults;

},{}],345:[function(require,module,exports){
var baseCopy = require('./baseCopy'),
    keys = require('../object/keys');

/**
 * The base implementation of `_.assign` without support for argument juggling,
 * multiple sources, and `this` binding `customizer` functions.
 *
 * @private
 * @param {Object} object The destination object.
 * @param {Object} source The source object.
 * @param {Function} [customizer] The function to customize assigning values.
 * @returns {Object} Returns the destination object.
 */
function baseAssign(object, source, customizer) {
  var props = keys(source);
  if (!customizer) {
    return baseCopy(source, object, props);
  }
  var index = -1,
      length = props.length;

  while (++index < length) {
    var key = props[index],
        value = object[key],
        result = customizer(value, source[key], key, object, source);

    if ((result === result ? (result !== value) : (value === value)) ||
        (typeof value == 'undefined' && !(key in object))) {
      object[key] = result;
    }
  }
  return object;
}

module.exports = baseAssign;

},{"../object/keys":421,"./baseCopy":349}],346:[function(require,module,exports){
var baseMatches = require('./baseMatches'),
    baseMatchesProperty = require('./baseMatchesProperty'),
    baseProperty = require('./baseProperty'),
    bindCallback = require('./bindCallback'),
    identity = require('../utility/identity');

/**
 * The base implementation of `_.callback` which supports specifying the
 * number of arguments to provide to `func`.
 *
 * @private
 * @param {*} [func=_.identity] The value to convert to a callback.
 * @param {*} [thisArg] The `this` binding of `func`.
 * @param {number} [argCount] The number of arguments to provide to `func`.
 * @returns {Function} Returns the callback.
 */
function baseCallback(func, thisArg, argCount) {
  var type = typeof func;
  if (type == 'function') {
    return typeof thisArg == 'undefined'
      ? func
      : bindCallback(func, thisArg, argCount);
  }
  if (func == null) {
    return identity;
  }
  if (type == 'object') {
    return baseMatches(func);
  }
  return typeof thisArg == 'undefined'
    ? baseProperty(func + '')
    : baseMatchesProperty(func + '', thisArg);
}

module.exports = baseCallback;

},{"../utility/identity":429,"./baseMatches":364,"./baseMatchesProperty":365,"./baseProperty":368,"./bindCallback":375}],347:[function(require,module,exports){
var arrayCopy = require('./arrayCopy'),
    arrayEach = require('./arrayEach'),
    baseCopy = require('./baseCopy'),
    baseForOwn = require('./baseForOwn'),
    initCloneArray = require('./initCloneArray'),
    initCloneByTag = require('./initCloneByTag'),
    initCloneObject = require('./initCloneObject'),
    isArray = require('../lang/isArray'),
    isObject = require('../lang/isObject'),
    keys = require('../object/keys');

/** `Object#toString` result references. */
var argsTag = '[object Arguments]',
    arrayTag = '[object Array]',
    boolTag = '[object Boolean]',
    dateTag = '[object Date]',
    errorTag = '[object Error]',
    funcTag = '[object Function]',
    mapTag = '[object Map]',
    numberTag = '[object Number]',
    objectTag = '[object Object]',
    regexpTag = '[object RegExp]',
    setTag = '[object Set]',
    stringTag = '[object String]',
    weakMapTag = '[object WeakMap]';

var arrayBufferTag = '[object ArrayBuffer]',
    float32Tag = '[object Float32Array]',
    float64Tag = '[object Float64Array]',
    int8Tag = '[object Int8Array]',
    int16Tag = '[object Int16Array]',
    int32Tag = '[object Int32Array]',
    uint8Tag = '[object Uint8Array]',
    uint8ClampedTag = '[object Uint8ClampedArray]',
    uint16Tag = '[object Uint16Array]',
    uint32Tag = '[object Uint32Array]';

/** Used to identify `toStringTag` values supported by `_.clone`. */
var cloneableTags = {};
cloneableTags[argsTag] = cloneableTags[arrayTag] =
cloneableTags[arrayBufferTag] = cloneableTags[boolTag] =
cloneableTags[dateTag] = cloneableTags[float32Tag] =
cloneableTags[float64Tag] = cloneableTags[int8Tag] =
cloneableTags[int16Tag] = cloneableTags[int32Tag] =
cloneableTags[numberTag] = cloneableTags[objectTag] =
cloneableTags[regexpTag] = cloneableTags[stringTag] =
cloneableTags[uint8Tag] = cloneableTags[uint8ClampedTag] =
cloneableTags[uint16Tag] = cloneableTags[uint32Tag] = true;
cloneableTags[errorTag] = cloneableTags[funcTag] =
cloneableTags[mapTag] = cloneableTags[setTag] =
cloneableTags[weakMapTag] = false;

/** Used for native method references. */
var objectProto = Object.prototype;

/**
 * Used to resolve the [`toStringTag`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-object.prototype.tostring)
 * of values.
 */
var objToString = objectProto.toString;

/**
 * The base implementation of `_.clone` without support for argument juggling
 * and `this` binding `customizer` functions.
 *
 * @private
 * @param {*} value The value to clone.
 * @param {boolean} [isDeep] Specify a deep clone.
 * @param {Function} [customizer] The function to customize cloning values.
 * @param {string} [key] The key of `value`.
 * @param {Object} [object] The object `value` belongs to.
 * @param {Array} [stackA=[]] Tracks traversed source objects.
 * @param {Array} [stackB=[]] Associates clones with source counterparts.
 * @returns {*} Returns the cloned value.
 */
function baseClone(value, isDeep, customizer, key, object, stackA, stackB) {
  var result;
  if (customizer) {
    result = object ? customizer(value, key, object) : customizer(value);
  }
  if (typeof result != 'undefined') {
    return result;
  }
  if (!isObject(value)) {
    return value;
  }
  var isArr = isArray(value);
  if (isArr) {
    result = initCloneArray(value);
    if (!isDeep) {
      return arrayCopy(value, result);
    }
  } else {
    var tag = objToString.call(value),
        isFunc = tag == funcTag;

    if (tag == objectTag || tag == argsTag || (isFunc && !object)) {
      result = initCloneObject(isFunc ? {} : value);
      if (!isDeep) {
        return baseCopy(value, result, keys(value));
      }
    } else {
      return cloneableTags[tag]
        ? initCloneByTag(value, tag, isDeep)
        : (object ? value : {});
    }
  }
  // Check for circular references and return corresponding clone.
  stackA || (stackA = []);
  stackB || (stackB = []);

  var length = stackA.length;
  while (length--) {
    if (stackA[length] == value) {
      return stackB[length];
    }
  }
  // Add the source value to the stack of traversed objects and associate it with its clone.
  stackA.push(value);
  stackB.push(result);

  // Recursively populate clone (susceptible to call stack limits).
  (isArr ? arrayEach : baseForOwn)(value, function(subValue, key) {
    result[key] = baseClone(subValue, isDeep, customizer, key, value, stackA, stackB);
  });
  return result;
}

module.exports = baseClone;

},{"../lang/isArray":405,"../lang/isObject":411,"../object/keys":421,"./arrayCopy":339,"./arrayEach":340,"./baseCopy":349,"./baseForOwn":355,"./initCloneArray":390,"./initCloneByTag":391,"./initCloneObject":392}],348:[function(require,module,exports){
/**
 * The base implementation of `compareAscending` which compares values and
 * sorts them in ascending order without guaranteeing a stable sort.
 *
 * @private
 * @param {*} value The value to compare to `other`.
 * @param {*} other The value to compare to `value`.
 * @returns {number} Returns the sort order indicator for `value`.
 */
function baseCompareAscending(value, other) {
  if (value !== other) {
    var valIsReflexive = value === value,
        othIsReflexive = other === other;

    if (value > other || !valIsReflexive || (typeof value == 'undefined' && othIsReflexive)) {
      return 1;
    }
    if (value < other || !othIsReflexive || (typeof other == 'undefined' && valIsReflexive)) {
      return -1;
    }
  }
  return 0;
}

module.exports = baseCompareAscending;

},{}],349:[function(require,module,exports){
/**
 * Copies the properties of `source` to `object`.
 *
 * @private
 * @param {Object} source The object to copy properties from.
 * @param {Object} [object={}] The object to copy properties to.
 * @param {Array} props The property names to copy.
 * @returns {Object} Returns `object`.
 */
function baseCopy(source, object, props) {
  if (!props) {
    props = object;
    object = {};
  }
  var index = -1,
      length = props.length;

  while (++index < length) {
    var key = props[index];
    object[key] = source[key];
  }
  return object;
}

module.exports = baseCopy;

},{}],350:[function(require,module,exports){
var baseForOwn = require('./baseForOwn'),
    createBaseEach = require('./createBaseEach');

/**
 * The base implementation of `_.forEach` without support for callback
 * shorthands and `this` binding.
 *
 * @private
 * @param {Array|Object|string} collection The collection to iterate over.
 * @param {Function} iteratee The function invoked per iteration.
 * @returns {Array|Object|string} Returns `collection`.
 */
var baseEach = createBaseEach(baseForOwn);

module.exports = baseEach;

},{"./baseForOwn":355,"./createBaseEach":381}],351:[function(require,module,exports){
var baseForOwnRight = require('./baseForOwnRight'),
    createBaseEach = require('./createBaseEach');

/**
 * The base implementation of `_.forEachRight` without support for callback
 * shorthands and `this` binding.
 *
 * @private
 * @param {Array|Object|string} collection The collection to iterate over.
 * @param {Function} iteratee The function invoked per iteration.
 * @returns {Array|Object|string} Returns `collection`.
 */
var baseEachRight = createBaseEach(baseForOwnRight, true);

module.exports = baseEachRight;

},{"./baseForOwnRight":356,"./createBaseEach":381}],352:[function(require,module,exports){
var isArguments = require('../lang/isArguments'),
    isArray = require('../lang/isArray'),
    isLength = require('./isLength'),
    isObjectLike = require('./isObjectLike');

/**
 * The base implementation of `_.flatten` with added support for restricting
 * flattening and specifying the start index.
 *
 * @private
 * @param {Array} array The array to flatten.
 * @param {boolean} isDeep Specify a deep flatten.
 * @param {boolean} isStrict Restrict flattening to arrays and `arguments` objects.
 * @returns {Array} Returns the new flattened array.
 */
function baseFlatten(array, isDeep, isStrict) {
  var index = -1,
      length = array.length,
      resIndex = -1,
      result = [];

  while (++index < length) {
    var value = array[index];

    if (isObjectLike(value) && isLength(value.length) && (isArray(value) || isArguments(value))) {
      if (isDeep) {
        // Recursively flatten arrays (susceptible to call stack limits).
        value = baseFlatten(value, isDeep, isStrict);
      }
      var valIndex = -1,
          valLength = value.length;

      result.length += valLength;
      while (++valIndex < valLength) {
        result[++resIndex] = value[valIndex];
      }
    } else if (!isStrict) {
      result[++resIndex] = value;
    }
  }
  return result;
}

module.exports = baseFlatten;

},{"../lang/isArguments":404,"../lang/isArray":405,"./isLength":395,"./isObjectLike":396}],353:[function(require,module,exports){
var createBaseFor = require('./createBaseFor');

/**
 * The base implementation of `baseForIn` and `baseForOwn` which iterates
 * over `object` properties returned by `keysFunc` invoking `iteratee` for
 * each property. Iterator functions may exit iteration early by explicitly
 * returning `false`.
 *
 * @private
 * @param {Object} object The object to iterate over.
 * @param {Function} iteratee The function invoked per iteration.
 * @param {Function} keysFunc The function to get the keys of `object`.
 * @returns {Object} Returns `object`.
 */
var baseFor = createBaseFor();

module.exports = baseFor;

},{"./createBaseFor":382}],354:[function(require,module,exports){
var baseFor = require('./baseFor'),
    keysIn = require('../object/keysIn');

/**
 * The base implementation of `_.forIn` without support for callback
 * shorthands and `this` binding.
 *
 * @private
 * @param {Object} object The object to iterate over.
 * @param {Function} iteratee The function invoked per iteration.
 * @returns {Object} Returns `object`.
 */
function baseForIn(object, iteratee) {
  return baseFor(object, iteratee, keysIn);
}

module.exports = baseForIn;

},{"../object/keysIn":422,"./baseFor":353}],355:[function(require,module,exports){
var baseFor = require('./baseFor'),
    keys = require('../object/keys');

/**
 * The base implementation of `_.forOwn` without support for callback
 * shorthands and `this` binding.
 *
 * @private
 * @param {Object} object The object to iterate over.
 * @param {Function} iteratee The function invoked per iteration.
 * @returns {Object} Returns `object`.
 */
function baseForOwn(object, iteratee) {
  return baseFor(object, iteratee, keys);
}

module.exports = baseForOwn;

},{"../object/keys":421,"./baseFor":353}],356:[function(require,module,exports){
var baseForRight = require('./baseForRight'),
    keys = require('../object/keys');

/**
 * The base implementation of `_.forOwnRight` without support for callback
 * shorthands and `this` binding.
 *
 * @private
 * @param {Object} object The object to iterate over.
 * @param {Function} iteratee The function invoked per iteration.
 * @returns {Object} Returns `object`.
 */
function baseForOwnRight(object, iteratee) {
  return baseForRight(object, iteratee, keys);
}

module.exports = baseForOwnRight;

},{"../object/keys":421,"./baseForRight":357}],357:[function(require,module,exports){
var createBaseFor = require('./createBaseFor');

/**
 * This function is like `baseFor` except that it iterates over properties
 * in the opposite order.
 *
 * @private
 * @param {Object} object The object to iterate over.
 * @param {Function} iteratee The function invoked per iteration.
 * @param {Function} keysFunc The function to get the keys of `object`.
 * @returns {Object} Returns `object`.
 */
var baseForRight = createBaseFor(true);

module.exports = baseForRight;

},{"./createBaseFor":382}],358:[function(require,module,exports){
var indexOfNaN = require('./indexOfNaN');

/**
 * The base implementation of `_.indexOf` without support for binary searches.
 *
 * @private
 * @param {Array} array The array to search.
 * @param {*} value The value to search for.
 * @param {number} fromIndex The index to search from.
 * @returns {number} Returns the index of the matched value, else `-1`.
 */
function baseIndexOf(array, value, fromIndex) {
  if (value !== value) {
    return indexOfNaN(array, fromIndex);
  }
  var index = fromIndex - 1,
      length = array.length;

  while (++index < length) {
    if (array[index] === value) {
      return index;
    }
  }
  return -1;
}

module.exports = baseIndexOf;

},{"./indexOfNaN":389}],359:[function(require,module,exports){
var baseIsEqualDeep = require('./baseIsEqualDeep');

/**
 * The base implementation of `_.isEqual` without support for `this` binding
 * `customizer` functions.
 *
 * @private
 * @param {*} value The value to compare.
 * @param {*} other The other value to compare.
 * @param {Function} [customizer] The function to customize comparing values.
 * @param {boolean} [isLoose] Specify performing partial comparisons.
 * @param {Array} [stackA] Tracks traversed `value` objects.
 * @param {Array} [stackB] Tracks traversed `other` objects.
 * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
 */
function baseIsEqual(value, other, customizer, isLoose, stackA, stackB) {
  // Exit early for identical values.
  if (value === other) {
    // Treat `+0` vs. `-0` as not equal.
    return value !== 0 || (1 / value == 1 / other);
  }
  var valType = typeof value,
      othType = typeof other;

  // Exit early for unlike primitive values.
  if ((valType != 'function' && valType != 'object' && othType != 'function' && othType != 'object') ||
      value == null || other == null) {
    // Return `false` unless both values are `NaN`.
    return value !== value && other !== other;
  }
  return baseIsEqualDeep(value, other, baseIsEqual, customizer, isLoose, stackA, stackB);
}

module.exports = baseIsEqual;

},{"./baseIsEqualDeep":360}],360:[function(require,module,exports){
var equalArrays = require('./equalArrays'),
    equalByTag = require('./equalByTag'),
    equalObjects = require('./equalObjects'),
    isArray = require('../lang/isArray'),
    isTypedArray = require('../lang/isTypedArray');

/** `Object#toString` result references. */
var argsTag = '[object Arguments]',
    arrayTag = '[object Array]',
    funcTag = '[object Function]',
    objectTag = '[object Object]';

/** Used for native method references. */
var objectProto = Object.prototype;

/** Used to check objects for own properties. */
var hasOwnProperty = objectProto.hasOwnProperty;

/**
 * Used to resolve the [`toStringTag`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-object.prototype.tostring)
 * of values.
 */
var objToString = objectProto.toString;

/**
 * A specialized version of `baseIsEqual` for arrays and objects which performs
 * deep comparisons and tracks traversed objects enabling objects with circular
 * references to be compared.
 *
 * @private
 * @param {Object} object The object to compare.
 * @param {Object} other The other object to compare.
 * @param {Function} equalFunc The function to determine equivalents of values.
 * @param {Function} [customizer] The function to customize comparing objects.
 * @param {boolean} [isLoose] Specify performing partial comparisons.
 * @param {Array} [stackA=[]] Tracks traversed `value` objects.
 * @param {Array} [stackB=[]] Tracks traversed `other` objects.
 * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
 */
function baseIsEqualDeep(object, other, equalFunc, customizer, isLoose, stackA, stackB) {
  var objIsArr = isArray(object),
      othIsArr = isArray(other),
      objTag = arrayTag,
      othTag = arrayTag;

  if (!objIsArr) {
    objTag = objToString.call(object);
    if (objTag == argsTag) {
      objTag = objectTag;
    } else if (objTag != objectTag) {
      objIsArr = isTypedArray(object);
    }
  }
  if (!othIsArr) {
    othTag = objToString.call(other);
    if (othTag == argsTag) {
      othTag = objectTag;
    } else if (othTag != objectTag) {
      othIsArr = isTypedArray(other);
    }
  }
  var objIsObj = (objTag == objectTag || (isLoose && objTag == funcTag)),
      othIsObj = (othTag == objectTag || (isLoose && othTag == funcTag)),
      isSameTag = objTag == othTag;

  if (isSameTag && !(objIsArr || objIsObj)) {
    return equalByTag(object, other, objTag);
  }
  if (isLoose) {
    if (!isSameTag && !(objIsObj && othIsObj)) {
      return false;
    }
  } else {
    var valWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'),
        othWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__');

    if (valWrapped || othWrapped) {
      return equalFunc(valWrapped ? object.value() : object, othWrapped ? other.value() : other, customizer, isLoose, stackA, stackB);
    }
    if (!isSameTag) {
      return false;
    }
  }
  // Assume cyclic values are equal.
  // For more information on detecting circular references see https://es5.github.io/#JO.
  stackA || (stackA = []);
  stackB || (stackB = []);

  var length = stackA.length;
  while (length--) {
    if (stackA[length] == object) {
      return stackB[length] == other;
    }
  }
  // Add `object` and `other` to the stack of traversed objects.
  stackA.push(object);
  stackB.push(other);

  var result = (objIsArr ? equalArrays : equalObjects)(object, other, equalFunc, customizer, isLoose, stackA, stackB);

  stackA.pop();
  stackB.pop();

  return result;
}

module.exports = baseIsEqualDeep;

},{"../lang/isArray":405,"../lang/isTypedArray":415,"./equalArrays":386,"./equalByTag":387,"./equalObjects":388}],361:[function(require,module,exports){
/**
 * The base implementation of `_.isFunction` without support for environments
 * with incorrect `typeof` results.
 *
 * @private
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
 */
function baseIsFunction(value) {
  // Avoid a Chakra JIT bug in compatibility modes of IE 11.
  // See https://github.com/jashkenas/underscore/issues/1621 for more details.
  return typeof value == 'function' || false;
}

module.exports = baseIsFunction;

},{}],362:[function(require,module,exports){
var baseIsEqual = require('./baseIsEqual');

/**
 * The base implementation of `_.isMatch` without support for callback
 * shorthands and `this` binding.
 *
 * @private
 * @param {Object} object The object to inspect.
 * @param {Array} props The source property names to match.
 * @param {Array} values The source values to match.
 * @param {Array} strictCompareFlags Strict comparison flags for source values.
 * @param {Function} [customizer] The function to customize comparing objects.
 * @returns {boolean} Returns `true` if `object` is a match, else `false`.
 */
function baseIsMatch(object, props, values, strictCompareFlags, customizer) {
  var index = -1,
      length = props.length,
      noCustomizer = !customizer;

  while (++index < length) {
    if ((noCustomizer && strictCompareFlags[index])
          ? values[index] !== object[props[index]]
          : !(props[index] in object)
        ) {
      return false;
    }
  }
  index = -1;
  while (++index < length) {
    var key = props[index],
        objValue = object[key],
        srcValue = values[index];

    if (noCustomizer && strictCompareFlags[index]) {
      var result = typeof objValue != 'undefined' || (key in object);
    } else {
      result = customizer ? customizer(objValue, srcValue, key) : undefined;
      if (typeof result == 'undefined') {
        result = baseIsEqual(srcValue, objValue, customizer, true);
      }
    }
    if (!result) {
      return false;
    }
  }
  return true;
}

module.exports = baseIsMatch;

},{"./baseIsEqual":359}],363:[function(require,module,exports){
var baseEach = require('./baseEach');

/**
 * The base implementation of `_.map` without support for callback shorthands
 * and `this` binding.
 *
 * @private
 * @param {Array|Object|string} collection The collection to iterate over.
 * @param {Function} iteratee The function invoked per iteration.
 * @returns {Array} Returns the new mapped array.
 */
function baseMap(collection, iteratee) {
  var result = [];
  baseEach(collection, function(value, key, collection) {
    result.push(iteratee(value, key, collection));
  });
  return result;
}

module.exports = baseMap;

},{"./baseEach":350}],364:[function(require,module,exports){
var baseIsMatch = require('./baseIsMatch'),
    constant = require('../utility/constant'),
    isStrictComparable = require('./isStrictComparable'),
    keys = require('../object/keys'),
    toObject = require('./toObject');

/**
 * The base implementation of `_.matches` which does not clone `source`.
 *
 * @private
 * @param {Object} source The object of property values to match.
 * @returns {Function} Returns the new function.
 */
function baseMatches(source) {
  var props = keys(source),
      length = props.length;

  if (!length) {
    return constant(true);
  }
  if (length == 1) {
    var key = props[0],
        value = source[key];

    if (isStrictComparable(value)) {
      return function(object) {
        return object != null && object[key] === value &&
          (typeof value != 'undefined' || (key in toObject(object)));
      };
    }
  }
  var values = Array(length),
      strictCompareFlags = Array(length);

  while (length--) {
    value = source[props[length]];
    values[length] = value;
    strictCompareFlags[length] = isStrictComparable(value);
  }
  return function(object) {
    return object != null && baseIsMatch(toObject(object), props, values, strictCompareFlags);
  };
}

module.exports = baseMatches;

},{"../object/keys":421,"../utility/constant":428,"./baseIsMatch":362,"./isStrictComparable":397,"./toObject":401}],365:[function(require,module,exports){
var baseIsEqual = require('./baseIsEqual'),
    isStrictComparable = require('./isStrictComparable'),
    toObject = require('./toObject');

/**
 * The base implementation of `_.matchesProperty` which does not coerce `key`
 * to a string.
 *
 * @private
 * @param {string} key The key of the property to get.
 * @param {*} value The value to compare.
 * @returns {Function} Returns the new function.
 */
function baseMatchesProperty(key, value) {
  if (isStrictComparable(value)) {
    return function(object) {
      return object != null && object[key] === value &&
        (typeof value != 'undefined' || (key in toObject(object)));
    };
  }
  return function(object) {
    return object != null && baseIsEqual(value, object[key], null, true);
  };
}

module.exports = baseMatchesProperty;

},{"./baseIsEqual":359,"./isStrictComparable":397,"./toObject":401}],366:[function(require,module,exports){
var arrayEach = require('./arrayEach'),
    baseForOwn = require('./baseForOwn'),
    baseMergeDeep = require('./baseMergeDeep'),
    isArray = require('../lang/isArray'),
    isLength = require('./isLength'),
    isObject = require('../lang/isObject'),
    isObjectLike = require('./isObjectLike'),
    isTypedArray = require('../lang/isTypedArray');

/**
 * The base implementation of `_.merge` without support for argument juggling,
 * multiple sources, and `this` binding `customizer` functions.
 *
 * @private
 * @param {Object} object The destination object.
 * @param {Object} source The source object.
 * @param {Function} [customizer] The function to customize merging properties.
 * @param {Array} [stackA=[]] Tracks traversed source objects.
 * @param {Array} [stackB=[]] Associates values with source counterparts.
 * @returns {Object} Returns the destination object.
 */
function baseMerge(object, source, customizer, stackA, stackB) {
  if (!isObject(object)) {
    return object;
  }
  var isSrcArr = isLength(source.length) && (isArray(source) || isTypedArray(source));
  (isSrcArr ? arrayEach : baseForOwn)(source, function(srcValue, key, source) {
    if (isObjectLike(srcValue)) {
      stackA || (stackA = []);
      stackB || (stackB = []);
      return baseMergeDeep(object, source, key, baseMerge, customizer, stackA, stackB);
    }
    var value = object[key],
        result = customizer ? customizer(value, srcValue, key, object, source) : undefined,
        isCommon = typeof result == 'undefined';

    if (isCommon) {
      result = srcValue;
    }
    if ((isSrcArr || typeof result != 'undefined') &&
        (isCommon || (result === result ? (result !== value) : (value === value)))) {
      object[key] = result;
    }
  });
  return object;
}

module.exports = baseMerge;

},{"../lang/isArray":405,"../lang/isObject":411,"../lang/isTypedArray":415,"./arrayEach":340,"./baseForOwn":355,"./baseMergeDeep":367,"./isLength":395,"./isObjectLike":396}],367:[function(require,module,exports){
var arrayCopy = require('./arrayCopy'),
    isArguments = require('../lang/isArguments'),
    isArray = require('../lang/isArray'),
    isLength = require('./isLength'),
    isPlainObject = require('../lang/isPlainObject'),
    isTypedArray = require('../lang/isTypedArray'),
    toPlainObject = require('../lang/toPlainObject');

/**
 * A specialized version of `baseMerge` for arrays and objects which performs
 * deep merges and tracks traversed objects enabling objects with circular
 * references to be merged.
 *
 * @private
 * @param {Object} object The destination object.
 * @param {Object} source The source object.
 * @param {string} key The key of the value to merge.
 * @param {Function} mergeFunc The function to merge values.
 * @param {Function} [customizer] The function to customize merging properties.
 * @param {Array} [stackA=[]] Tracks traversed source objects.
 * @param {Array} [stackB=[]] Associates values with source counterparts.
 * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
 */
function baseMergeDeep(object, source, key, mergeFunc, customizer, stackA, stackB) {
  var length = stackA.length,
      srcValue = source[key];

  while (length--) {
    if (stackA[length] == srcValue) {
      object[key] = stackB[length];
      return;
    }
  }
  var value = object[key],
      result = customizer ? customizer(value, srcValue, key, object, source) : undefined,
      isCommon = typeof result == 'undefined';

  if (isCommon) {
    result = srcValue;
    if (isLength(srcValue.length) && (isArray(srcValue) || isTypedArray(srcValue))) {
      result = isArray(value)
        ? value
        : ((value && value.length) ? arrayCopy(value) : []);
    }
    else if (isPlainObject(srcValue) || isArguments(srcValue)) {
      result = isArguments(value)
        ? toPlainObject(value)
        : (isPlainObject(value) ? value : {});
    }
    else {
      isCommon = false;
    }
  }
  // Add the source value to the stack of traversed objects and associate
  // it with its merged value.
  stackA.push(srcValue);
  stackB.push(result);

  if (isCommon) {
    // Recursively merge objects and arrays (susceptible to call stack limits).
    object[key] = mergeFunc(result, srcValue, customizer, stackA, stackB);
  } else if (result === result ? (result !== value) : (value === value)) {
    object[key] = result;
  }
}

module.exports = baseMergeDeep;

},{"../lang/isArguments":404,"../lang/isArray":405,"../lang/isPlainObject":412,"../lang/isTypedArray":415,"../lang/toPlainObject":416,"./arrayCopy":339,"./isLength":395}],368:[function(require,module,exports){
/**
 * The base implementation of `_.property` which does not coerce `key` to a string.
 *
 * @private
 * @param {string} key The key of the property to get.
 * @returns {Function} Returns the new function.
 */
function baseProperty(key) {
  return function(object) {
    return object == null ? undefined : object[key];
  };
}

module.exports = baseProperty;

},{}],369:[function(require,module,exports){
/**
 * The base implementation of `_.reduce` and `_.reduceRight` without support
 * for callback shorthands and `this` binding, which iterates over `collection`
 * using the provided `eachFunc`.
 *
 * @private
 * @param {Array|Object|string} collection The collection to iterate over.
 * @param {Function} iteratee The function invoked per iteration.
 * @param {*} accumulator The initial value.
 * @param {boolean} initFromCollection Specify using the first or last element
 *  of `collection` as the initial value.
 * @param {Function} eachFunc The function to iterate over `collection`.
 * @returns {*} Returns the accumulated value.
 */
function baseReduce(collection, iteratee, accumulator, initFromCollection, eachFunc) {
  eachFunc(collection, function(value, index, collection) {
    accumulator = initFromCollection
      ? (initFromCollection = false, value)
      : iteratee(accumulator, value, index, collection);
  });
  return accumulator;
}

module.exports = baseReduce;

},{}],370:[function(require,module,exports){
var baseEach = require('./baseEach');

/**
 * The base implementation of `_.some` without support for callback shorthands
 * and `this` binding.
 *
 * @private
 * @param {Array|Object|string} collection The collection to iterate over.
 * @param {Function} predicate The function invoked per iteration.
 * @returns {boolean} Returns `true` if any element passes the predicate check,
 *  else `false`.
 */
function baseSome(collection, predicate) {
  var result;

  baseEach(collection, function(value, index, collection) {
    result = predicate(value, index, collection);
    return !result;
  });
  return !!result;
}

module.exports = baseSome;

},{"./baseEach":350}],371:[function(require,module,exports){
/**
 * The base implementation of `_.sortBy` which uses `comparer` to define
 * the sort order of `array` and replaces criteria objects with their
 * corresponding values.
 *
 * @private
 * @param {Array} array The array to sort.
 * @param {Function} comparer The function to define sort order.
 * @returns {Array} Returns `array`.
 */
function baseSortBy(array, comparer) {
  var length = array.length;

  array.sort(comparer);
  while (length--) {
    array[length] = array[length].value;
  }
  return array;
}

module.exports = baseSortBy;

},{}],372:[function(require,module,exports){
/**
 * Converts `value` to a string if it is not one. An empty string is returned
 * for `null` or `undefined` values.
 *
 * @private
 * @param {*} value The value to process.
 * @returns {string} Returns the string.
 */
function baseToString(value) {
  if (typeof value == 'string') {
    return value;
  }
  return value == null ? '' : (value + '');
}

module.exports = baseToString;

},{}],373:[function(require,module,exports){
var baseIndexOf = require('./baseIndexOf'),
    cacheIndexOf = require('./cacheIndexOf'),
    createCache = require('./createCache');

/**
 * The base implementation of `_.uniq` without support for callback shorthands
 * and `this` binding.
 *
 * @private
 * @param {Array} array The array to inspect.
 * @param {Function} [iteratee] The function invoked per iteration.
 * @returns {Array} Returns the new duplicate-value-free array.
 */
function baseUniq(array, iteratee) {
  var index = -1,
      indexOf = baseIndexOf,
      length = array.length,
      isCommon = true,
      isLarge = isCommon && length >= 200,
      seen = isLarge ? createCache() : null,
      result = [];

  if (seen) {
    indexOf = cacheIndexOf;
    isCommon = false;
  } else {
    isLarge = false;
    seen = iteratee ? [] : result;
  }
  outer:
  while (++index < length) {
    var value = array[index],
        computed = iteratee ? iteratee(value, index, array) : value;

    if (isCommon && value === value) {
      var seenIndex = seen.length;
      while (seenIndex--) {
        if (seen[seenIndex] === computed) {
          continue outer;
        }
      }
      if (iteratee) {
        seen.push(computed);
      }
      result.push(value);
    }
    else if (indexOf(seen, computed, 0) < 0) {
      if (iteratee || isLarge) {
        seen.push(computed);
      }
      result.push(value);
    }
  }
  return result;
}

module.exports = baseUniq;

},{"./baseIndexOf":358,"./cacheIndexOf":377,"./createCache":383}],374:[function(require,module,exports){
/**
 * The base implementation of `_.values` and `_.valuesIn` which creates an
 * array of `object` property values corresponding to the property names
 * returned by `keysFunc`.
 *
 * @private
 * @param {Object} object The object to query.
 * @param {Array} props The property names to get values for.
 * @returns {Object} Returns the array of property values.
 */
function baseValues(object, props) {
  var index = -1,
      length = props.length,
      result = Array(length);

  while (++index < length) {
    result[index] = object[props[index]];
  }
  return result;
}

module.exports = baseValues;

},{}],375:[function(require,module,exports){
var identity = require('../utility/identity');

/**
 * A specialized version of `baseCallback` which only supports `this` binding
 * and specifying the number of arguments to provide to `func`.
 *
 * @private
 * @param {Function} func The function to bind.
 * @param {*} thisArg The `this` binding of `func`.
 * @param {number} [argCount] The number of arguments to provide to `func`.
 * @returns {Function} Returns the callback.
 */
function bindCallback(func, thisArg, argCount) {
  if (typeof func != 'function') {
    return identity;
  }
  if (typeof thisArg == 'undefined') {
    return func;
  }
  switch (argCount) {
    case 1: return function(value) {
      return func.call(thisArg, value);
    };
    case 3: return function(value, index, collection) {
      return func.call(thisArg, value, index, collection);
    };
    case 4: return function(accumulator, value, index, collection) {
      return func.call(thisArg, accumulator, value, index, collection);
    };
    case 5: return function(value, other, key, object, source) {
      return func.call(thisArg, value, other, key, object, source);
    };
  }
  return function() {
    return func.apply(thisArg, arguments);
  };
}

module.exports = bindCallback;

},{"../utility/identity":429}],376:[function(require,module,exports){
(function (global){
var constant = require('../utility/constant'),
    isNative = require('../lang/isNative');

/** Native method references. */
var ArrayBuffer = isNative(ArrayBuffer = global.ArrayBuffer) && ArrayBuffer,
    bufferSlice = isNative(bufferSlice = ArrayBuffer && new ArrayBuffer(0).slice) && bufferSlice,
    floor = Math.floor,
    Uint8Array = isNative(Uint8Array = global.Uint8Array) && Uint8Array;

/** Used to clone array buffers. */
var Float64Array = (function() {
  // Safari 5 errors when using an array buffer to initialize a typed array
  // where the array buffer's `byteLength` is not a multiple of the typed
  // array's `BYTES_PER_ELEMENT`.
  try {
    var func = isNative(func = global.Float64Array) && func,
        result = new func(new ArrayBuffer(10), 0, 1) && func;
  } catch(e) {}
  return result;
}());

/** Used as the size, in bytes, of each `Float64Array` element. */
var FLOAT64_BYTES_PER_ELEMENT = Float64Array ? Float64Array.BYTES_PER_ELEMENT : 0;

/**
 * Creates a clone of the given array buffer.
 *
 * @private
 * @param {ArrayBuffer} buffer The array buffer to clone.
 * @returns {ArrayBuffer} Returns the cloned array buffer.
 */
function bufferClone(buffer) {
  return bufferSlice.call(buffer, 0);
}
if (!bufferSlice) {
  // PhantomJS has `ArrayBuffer` and `Uint8Array` but not `Float64Array`.
  bufferClone = !(ArrayBuffer && Uint8Array) ? constant(null) : function(buffer) {
    var byteLength = buffer.byteLength,
        floatLength = Float64Array ? floor(byteLength / FLOAT64_BYTES_PER_ELEMENT) : 0,
        offset = floatLength * FLOAT64_BYTES_PER_ELEMENT,
        result = new ArrayBuffer(byteLength);

    if (floatLength) {
      var view = new Float64Array(result, 0, floatLength);
      view.set(new Float64Array(buffer, 0, floatLength));
    }
    if (byteLength != offset) {
      view = new Uint8Array(result, offset);
      view.set(new Uint8Array(buffer, offset));
    }
    return result;
  };
}

module.exports = bufferClone;

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../lang/isNative":409,"../utility/constant":428}],377:[function(require,module,exports){
var isObject = require('../lang/isObject');

/**
 * Checks if `value` is in `cache` mimicking the return signature of
 * `_.indexOf` by returning `0` if the value is found, else `-1`.
 *
 * @private
 * @param {Object} cache The cache to search.
 * @param {*} value The value to search for.
 * @returns {number} Returns `0` if `value` is found, else `-1`.
 */
function cacheIndexOf(cache, value) {
  var data = cache.data,
      result = (typeof value == 'string' || isObject(value)) ? data.set.has(value) : data.hash[value];

  return result ? 0 : -1;
}

module.exports = cacheIndexOf;

},{"../lang/isObject":411}],378:[function(require,module,exports){
var isObject = require('../lang/isObject');

/**
 * Adds `value` to the cache.
 *
 * @private
 * @name push
 * @memberOf SetCache
 * @param {*} value The value to cache.
 */
function cachePush(value) {
  var data = this.data;
  if (typeof value == 'string' || isObject(value)) {
    data.set.add(value);
  } else {
    data.hash[value] = true;
  }
}

module.exports = cachePush;

},{"../lang/isObject":411}],379:[function(require,module,exports){
var baseCompareAscending = require('./baseCompareAscending');

/**
 * Used by `_.sortBy` to compare transformed elements of a collection and stable
 * sort them in ascending order.
 *
 * @private
 * @param {Object} object The object to compare to `other`.
 * @param {Object} other The object to compare to `object`.
 * @returns {number} Returns the sort order indicator for `object`.
 */
function compareAscending(object, other) {
  return baseCompareAscending(object.criteria, other.criteria) || (object.index - other.index);
}

module.exports = compareAscending;

},{"./baseCompareAscending":348}],380:[function(require,module,exports){
var bindCallback = require('./bindCallback'),
    isIterateeCall = require('./isIterateeCall');

/**
 * Creates a function that assigns properties of source object(s) to a given
 * destination object.
 *
 * **Note:** This function is used to create `_.assign`, `_.defaults`, and `_.merge`.
 *
 * @private
 * @param {Function} assigner The function to assign values.
 * @returns {Function} Returns the new assigner function.
 */
function createAssigner(assigner) {
  return function() {
    var args = arguments,
        length = args.length,
        object = args[0];

    if (length < 2 || object == null) {
      return object;
    }
    var customizer = args[length - 2],
        thisArg = args[length - 1],
        guard = args[3];

    if (length > 3 && typeof customizer == 'function') {
      customizer = bindCallback(customizer, thisArg, 5);
      length -= 2;
    } else {
      customizer = (length > 2 && typeof thisArg == 'function') ? thisArg : null;
      length -= (customizer ? 1 : 0);
    }
    if (guard && isIterateeCall(args[1], args[2], guard)) {
      customizer = length == 3 ? null : customizer;
      length = 2;
    }
    var index = 0;
    while (++index < length) {
      var source = args[index];
      if (source) {
        assigner(object, source, customizer);
      }
    }
    return object;
  };
}

module.exports = createAssigner;

},{"./bindCallback":375,"./isIterateeCall":394}],381:[function(require,module,exports){
var isLength = require('./isLength'),
    toObject = require('./toObject');

/**
 * Creates a `baseEach` or `baseEachRight` function.
 *
 * @private
 * @param {Function} eachFunc The function to iterate over a collection.
 * @param {boolean} [fromRight] Specify iterating from right to left.
 * @returns {Function} Returns the new base function.
 */
function createBaseEach(eachFunc, fromRight) {
  return function(collection, iteratee) {
    var length = collection ? collection.length : 0;
    if (!isLength(length)) {
      return eachFunc(collection, iteratee);
    }
    var index = fromRight ? length : -1,
        iterable = toObject(collection);

    while ((fromRight ? index-- : ++index < length)) {
      if (iteratee(iterable[index], index, iterable) === false) {
        break;
      }
    }
    return collection;
  };
}

module.exports = createBaseEach;

},{"./isLength":395,"./toObject":401}],382:[function(require,module,exports){
var toObject = require('./toObject');

/**
 * Creates a base function for `_.forIn` or `_.forInRight`.
 *
 * @private
 * @param {boolean} [fromRight] Specify iterating from right to left.
 * @returns {Function} Returns the new base function.
 */
function createBaseFor(fromRight) {
  return function(object, iteratee, keysFunc) {
    var iterable = toObject(object),
        props = keysFunc(object),
        length = props.length,
        index = fromRight ? length : -1;

    while ((fromRight ? index-- : ++index < length)) {
      var key = props[index];
      if (iteratee(iterable[key], key, iterable) === false) {
        break;
      }
    }
    return object;
  };
}

module.exports = createBaseFor;

},{"./toObject":401}],383:[function(require,module,exports){
(function (global){
var SetCache = require('./SetCache'),
    constant = require('../utility/constant'),
    isNative = require('../lang/isNative');

/** Native method references. */
var Set = isNative(Set = global.Set) && Set;

/* Native method references for those with the same name as other `lodash` methods. */
var nativeCreate = isNative(nativeCreate = Object.create) && nativeCreate;

/**
 * Creates a `Set` cache object to optimize linear searches of large arrays.
 *
 * @private
 * @param {Array} [values] The values to cache.
 * @returns {null|Object} Returns the new cache object if `Set` is supported, else `null`.
 */
var createCache = !(nativeCreate && Set) ? constant(null) : function(values) {
  return new SetCache(values);
};

module.exports = createCache;

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../lang/isNative":409,"../utility/constant":428,"./SetCache":338}],384:[function(require,module,exports){
var bindCallback = require('./bindCallback'),
    isArray = require('../lang/isArray');

/**
 * Creates a function for `_.forEach` or `_.forEachRight`.
 *
 * @private
 * @param {Function} arrayFunc The function to iterate over an array.
 * @param {Function} eachFunc The function to iterate over a collection.
 * @returns {Function} Returns the new each function.
 */
function createForEach(arrayFunc, eachFunc) {
  return function(collection, iteratee, thisArg) {
    return (typeof iteratee == 'function' && typeof thisArg == 'undefined' && isArray(collection))
      ? arrayFunc(collection, iteratee)
      : eachFunc(collection, bindCallback(iteratee, thisArg, 3));
  };
}

module.exports = createForEach;

},{"../lang/isArray":405,"./bindCallback":375}],385:[function(require,module,exports){
var baseCallback = require('./baseCallback'),
    baseReduce = require('./baseReduce'),
    isArray = require('../lang/isArray');

/**
 * Creates a function for `_.reduce` or `_.reduceRight`.
 *
 * @private
 * @param {Function} arrayFunc The function to iterate over an array.
 * @param {Function} eachFunc The function to iterate over a collection.
 * @returns {Function} Returns the new each function.
 */
function createReduce(arrayFunc, eachFunc) {
  return function(collection, iteratee, accumulator, thisArg) {
    var initFromArray = arguments.length < 3;
    return (typeof iteratee == 'function' && typeof thisArg == 'undefined' && isArray(collection))
      ? arrayFunc(collection, iteratee, accumulator, initFromArray)
      : baseReduce(collection, baseCallback(iteratee, thisArg, 4), accumulator, initFromArray, eachFunc);
  };
}

module.exports = createReduce;

},{"../lang/isArray":405,"./baseCallback":346,"./baseReduce":369}],386:[function(require,module,exports){
/**
 * A specialized version of `baseIsEqualDeep` for arrays with support for
 * partial deep comparisons.
 *
 * @private
 * @param {Array} array The array to compare.
 * @param {Array} other The other array to compare.
 * @param {Function} equalFunc The function to determine equivalents of values.
 * @param {Function} [customizer] The function to customize comparing arrays.
 * @param {boolean} [isLoose] Specify performing partial comparisons.
 * @param {Array} [stackA] Tracks traversed `value` objects.
 * @param {Array} [stackB] Tracks traversed `other` objects.
 * @returns {boolean} Returns `true` if the arrays are equivalent, else `false`.
 */
function equalArrays(array, other, equalFunc, customizer, isLoose, stackA, stackB) {
  var index = -1,
      arrLength = array.length,
      othLength = other.length,
      result = true;

  if (arrLength != othLength && !(isLoose && othLength > arrLength)) {
    return false;
  }
  // Deep compare the contents, ignoring non-numeric properties.
  while (result && ++index < arrLength) {
    var arrValue = array[index],
        othValue = other[index];

    result = undefined;
    if (customizer) {
      result = isLoose
        ? customizer(othValue, arrValue, index)
        : customizer(arrValue, othValue, index);
    }
    if (typeof result == 'undefined') {
      // Recursively compare arrays (susceptible to call stack limits).
      if (isLoose) {
        var othIndex = othLength;
        while (othIndex--) {
          othValue = other[othIndex];
          result = (arrValue && arrValue === othValue) || equalFunc(arrValue, othValue, customizer, isLoose, stackA, stackB);
          if (result) {
            break;
          }
        }
      } else {
        result = (arrValue && arrValue === othValue) || equalFunc(arrValue, othValue, customizer, isLoose, stackA, stackB);
      }
    }
  }
  return !!result;
}

module.exports = equalArrays;

},{}],387:[function(require,module,exports){
/** `Object#toString` result references. */
var boolTag = '[object Boolean]',
    dateTag = '[object Date]',
    errorTag = '[object Error]',
    numberTag = '[object Number]',
    regexpTag = '[object RegExp]',
    stringTag = '[object String]';

/**
 * A specialized version of `baseIsEqualDeep` for comparing objects of
 * the same `toStringTag`.
 *
 * **Note:** This function only supports comparing values with tags of
 * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.
 *
 * @private
 * @param {Object} value The object to compare.
 * @param {Object} other The other object to compare.
 * @param {string} tag The `toStringTag` of the objects to compare.
 * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
 */
function equalByTag(object, other, tag) {
  switch (tag) {
    case boolTag:
    case dateTag:
      // Coerce dates and booleans to numbers, dates to milliseconds and booleans
      // to `1` or `0` treating invalid dates coerced to `NaN` as not equal.
      return +object == +other;

    case errorTag:
      return object.name == other.name && object.message == other.message;

    case numberTag:
      // Treat `NaN` vs. `NaN` as equal.
      return (object != +object)
        ? other != +other
        // But, treat `-0` vs. `+0` as not equal.
        : (object == 0 ? ((1 / object) == (1 / other)) : object == +other);

    case regexpTag:
    case stringTag:
      // Coerce regexes to strings and treat strings primitives and string
      // objects as equal. See https://es5.github.io/#x15.10.6.4 for more details.
      return object == (other + '');
  }
  return false;
}

module.exports = equalByTag;

},{}],388:[function(require,module,exports){
var keys = require('../object/keys');

/** Used for native method references. */
var objectProto = Object.prototype;

/** Used to check objects for own properties. */
var hasOwnProperty = objectProto.hasOwnProperty;

/**
 * A specialized version of `baseIsEqualDeep` for objects with support for
 * partial deep comparisons.
 *
 * @private
 * @param {Object} object The object to compare.
 * @param {Object} other The other object to compare.
 * @param {Function} equalFunc The function to determine equivalents of values.
 * @param {Function} [customizer] The function to customize comparing values.
 * @param {boolean} [isLoose] Specify performing partial comparisons.
 * @param {Array} [stackA] Tracks traversed `value` objects.
 * @param {Array} [stackB] Tracks traversed `other` objects.
 * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
 */
function equalObjects(object, other, equalFunc, customizer, isLoose, stackA, stackB) {
  var objProps = keys(object),
      objLength = objProps.length,
      othProps = keys(other),
      othLength = othProps.length;

  if (objLength != othLength && !isLoose) {
    return false;
  }
  var skipCtor = isLoose,
      index = -1;

  while (++index < objLength) {
    var key = objProps[index],
        result = isLoose ? key in other : hasOwnProperty.call(other, key);

    if (result) {
      var objValue = object[key],
          othValue = other[key];

      result = undefined;
      if (customizer) {
        result = isLoose
          ? customizer(othValue, objValue, key)
          : customizer(objValue, othValue, key);
      }
      if (typeof result == 'undefined') {
        // Recursively compare objects (susceptible to call stack limits).
        result = (objValue && objValue === othValue) || equalFunc(objValue, othValue, customizer, isLoose, stackA, stackB);
      }
    }
    if (!result) {
      return false;
    }
    skipCtor || (skipCtor = key == 'constructor');
  }
  if (!skipCtor) {
    var objCtor = object.constructor,
        othCtor = other.constructor;

    // Non `Object` object instances with different constructors are not equal.
    if (objCtor != othCtor &&
        ('constructor' in object && 'constructor' in other) &&
        !(typeof objCtor == 'function' && objCtor instanceof objCtor &&
          typeof othCtor == 'function' && othCtor instanceof othCtor)) {
      return false;
    }
  }
  return true;
}

module.exports = equalObjects;

},{"../object/keys":421}],389:[function(require,module,exports){
/**
 * Gets the index at which the first occurrence of `NaN` is found in `array`.
 *
 * @private
 * @param {Array} array The array to search.
 * @param {number} fromIndex The index to search from.
 * @param {boolean} [fromRight] Specify iterating from right to left.
 * @returns {number} Returns the index of the matched `NaN`, else `-1`.
 */
function indexOfNaN(array, fromIndex, fromRight) {
  var length = array.length,
      index = fromIndex + (fromRight ? 0 : -1);

  while ((fromRight ? index-- : ++index < length)) {
    var other = array[index];
    if (other !== other) {
      return index;
    }
  }
  return -1;
}

module.exports = indexOfNaN;

},{}],390:[function(require,module,exports){
/** Used for native method references. */
var objectProto = Object.prototype;

/** Used to check objects for own properties. */
var hasOwnProperty = objectProto.hasOwnProperty;

/**
 * Initializes an array clone.
 *
 * @private
 * @param {Array} array The array to clone.
 * @returns {Array} Returns the initialized clone.
 */
function initCloneArray(array) {
  var length = array.length,
      result = new array.constructor(length);

  // Add array properties assigned by `RegExp#exec`.
  if (length && typeof array[0] == 'string' && hasOwnProperty.call(array, 'index')) {
    result.index = array.index;
    result.input = array.input;
  }
  return result;
}

module.exports = initCloneArray;

},{}],391:[function(require,module,exports){
var bufferClone = require('./bufferClone');

/** `Object#toString` result references. */
var boolTag = '[object Boolean]',
    dateTag = '[object Date]',
    numberTag = '[object Number]',
    regexpTag = '[object RegExp]',
    stringTag = '[object String]';

var arrayBufferTag = '[object ArrayBuffer]',
    float32Tag = '[object Float32Array]',
    float64Tag = '[object Float64Array]',
    int8Tag = '[object Int8Array]',
    int16Tag = '[object Int16Array]',
    int32Tag = '[object Int32Array]',
    uint8Tag = '[object Uint8Array]',
    uint8ClampedTag = '[object Uint8ClampedArray]',
    uint16Tag = '[object Uint16Array]',
    uint32Tag = '[object Uint32Array]';

/** Used to match `RegExp` flags from their coerced string values. */
var reFlags = /\w*$/;

/**
 * Initializes an object clone based on its `toStringTag`.
 *
 * **Note:** This function only supports cloning values with tags of
 * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.
 *
 *
 * @private
 * @param {Object} object The object to clone.
 * @param {string} tag The `toStringTag` of the object to clone.
 * @param {boolean} [isDeep] Specify a deep clone.
 * @returns {Object} Returns the initialized clone.
 */
function initCloneByTag(object, tag, isDeep) {
  var Ctor = object.constructor;
  switch (tag) {
    case arrayBufferTag:
      return bufferClone(object);

    case boolTag:
    case dateTag:
      return new Ctor(+object);

    case float32Tag: case float64Tag:
    case int8Tag: case int16Tag: case int32Tag:
    case uint8Tag: case uint8ClampedTag: case uint16Tag: case uint32Tag:
      var buffer = object.buffer;
      return new Ctor(isDeep ? bufferClone(buffer) : buffer, object.byteOffset, object.length);

    case numberTag:
    case stringTag:
      return new Ctor(object);

    case regexpTag:
      var result = new Ctor(object.source, reFlags.exec(object));
      result.lastIndex = object.lastIndex;
  }
  return result;
}

module.exports = initCloneByTag;

},{"./bufferClone":376}],392:[function(require,module,exports){
/**
 * Initializes an object clone.
 *
 * @private
 * @param {Object} object The object to clone.
 * @returns {Object} Returns the initialized clone.
 */
function initCloneObject(object) {
  var Ctor = object.constructor;
  if (!(typeof Ctor == 'function' && Ctor instanceof Ctor)) {
    Ctor = Object;
  }
  return new Ctor;
}

module.exports = initCloneObject;

},{}],393:[function(require,module,exports){
/**
 * Used as the [maximum length](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-number.max_safe_integer)
 * of an array-like value.
 */
var MAX_SAFE_INTEGER = Math.pow(2, 53) - 1;

/**
 * Checks if `value` is a valid array-like index.
 *
 * @private
 * @param {*} value The value to check.
 * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.
 * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.
 */
function isIndex(value, length) {
  value = +value;
  length = length == null ? MAX_SAFE_INTEGER : length;
  return value > -1 && value % 1 == 0 && value < length;
}

module.exports = isIndex;

},{}],394:[function(require,module,exports){
var isIndex = require('./isIndex'),
    isLength = require('./isLength'),
    isObject = require('../lang/isObject');

/**
 * Checks if the provided arguments are from an iteratee call.
 *
 * @private
 * @param {*} value The potential iteratee value argument.
 * @param {*} index The potential iteratee index or key argument.
 * @param {*} object The potential iteratee object argument.
 * @returns {boolean} Returns `true` if the arguments are from an iteratee call, else `false`.
 */
function isIterateeCall(value, index, object) {
  if (!isObject(object)) {
    return false;
  }
  var type = typeof index;
  if (type == 'number') {
    var length = object.length,
        prereq = isLength(length) && isIndex(index, length);
  } else {
    prereq = type == 'string' && index in object;
  }
  if (prereq) {
    var other = object[index];
    return value === value ? (value === other) : (other !== other);
  }
  return false;
}

module.exports = isIterateeCall;

},{"../lang/isObject":411,"./isIndex":393,"./isLength":395}],395:[function(require,module,exports){
/**
 * Used as the [maximum length](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-number.max_safe_integer)
 * of an array-like value.
 */
var MAX_SAFE_INTEGER = Math.pow(2, 53) - 1;

/**
 * Checks if `value` is a valid array-like length.
 *
 * **Note:** This function is based on [`ToLength`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-tolength).
 *
 * @private
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.
 */
function isLength(value) {
  return typeof value == 'number' && value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;
}

module.exports = isLength;

},{}],396:[function(require,module,exports){
/**
 * Checks if `value` is object-like.
 *
 * @private
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is object-like, else `false`.
 */
function isObjectLike(value) {
  return !!value && typeof value == 'object';
}

module.exports = isObjectLike;

},{}],397:[function(require,module,exports){
var isObject = require('../lang/isObject');

/**
 * Checks if `value` is suitable for strict equality comparisons, i.e. `===`.
 *
 * @private
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` if suitable for strict
 *  equality comparisons, else `false`.
 */
function isStrictComparable(value) {
  return value === value && (value === 0 ? ((1 / value) > 0) : !isObject(value));
}

module.exports = isStrictComparable;

},{"../lang/isObject":411}],398:[function(require,module,exports){
var baseForIn = require('./baseForIn'),
    isObjectLike = require('./isObjectLike');

/** `Object#toString` result references. */
var objectTag = '[object Object]';

/** Used for native method references. */
var objectProto = Object.prototype;

/** Used to check objects for own properties. */
var hasOwnProperty = objectProto.hasOwnProperty;

/**
 * Used to resolve the [`toStringTag`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-object.prototype.tostring)
 * of values.
 */
var objToString = objectProto.toString;

/**
 * A fallback implementation of `_.isPlainObject` which checks if `value`
 * is an object created by the `Object` constructor or has a `[[Prototype]]`
 * of `null`.
 *
 * @private
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a plain object, else `false`.
 */
function shimIsPlainObject(value) {
  var Ctor;

  // Exit early for non `Object` objects.
  if (!(isObjectLike(value) && objToString.call(value) == objectTag) ||
      (!hasOwnProperty.call(value, 'constructor') &&
        (Ctor = value.constructor, typeof Ctor == 'function' && !(Ctor instanceof Ctor)))) {
    return false;
  }
  // IE < 9 iterates inherited properties before own properties. If the first
  // iterated property is an object's own property then there are no inherited
  // enumerable properties.
  var result;
  // In most environments an object's own properties are iterated before
  // its inherited properties. If the last iterated property is an object's
  // own property then there are no inherited enumerable properties.
  baseForIn(value, function(subValue, key) {
    result = key;
  });
  return typeof result == 'undefined' || hasOwnProperty.call(value, result);
}

module.exports = shimIsPlainObject;

},{"./baseForIn":354,"./isObjectLike":396}],399:[function(require,module,exports){
var isArguments = require('../lang/isArguments'),
    isArray = require('../lang/isArray'),
    isIndex = require('./isIndex'),
    isLength = require('./isLength'),
    keysIn = require('../object/keysIn'),
    support = require('../support');

/** Used for native method references. */
var objectProto = Object.prototype;

/** Used to check objects for own properties. */
var hasOwnProperty = objectProto.hasOwnProperty;

/**
 * A fallback implementation of `Object.keys` which creates an array of the
 * own enumerable property names of `object`.
 *
 * @private
 * @param {Object} object The object to inspect.
 * @returns {Array} Returns the array of property names.
 */
function shimKeys(object) {
  var props = keysIn(object),
      propsLength = props.length,
      length = propsLength && object.length;

  var allowIndexes = length && isLength(length) &&
    (isArray(object) || (support.nonEnumArgs && isArguments(object)));

  var index = -1,
      result = [];

  while (++index < propsLength) {
    var key = props[index];
    if ((allowIndexes && isIndex(key, length)) || hasOwnProperty.call(object, key)) {
      result.push(key);
    }
  }
  return result;
}

module.exports = shimKeys;

},{"../lang/isArguments":404,"../lang/isArray":405,"../object/keysIn":422,"../support":427,"./isIndex":393,"./isLength":395}],400:[function(require,module,exports){
/**
 * An implementation of `_.uniq` optimized for sorted arrays without support
 * for callback shorthands and `this` binding.
 *
 * @private
 * @param {Array} array The array to inspect.
 * @param {Function} [iteratee] The function invoked per iteration.
 * @returns {Array} Returns the new duplicate-value-free array.
 */
function sortedUniq(array, iteratee) {
  var seen,
      index = -1,
      length = array.length,
      resIndex = -1,
      result = [];

  while (++index < length) {
    var value = array[index],
        computed = iteratee ? iteratee(value, index, array) : value;

    if (!index || seen !== computed) {
      seen = computed;
      result[++resIndex] = value;
    }
  }
  return result;
}

module.exports = sortedUniq;

},{}],401:[function(require,module,exports){
var isObject = require('../lang/isObject');

/**
 * Converts `value` to an object if it is not one.
 *
 * @private
 * @param {*} value The value to process.
 * @returns {Object} Returns the object.
 */
function toObject(value) {
  return isObject(value) ? value : Object(value);
}

module.exports = toObject;

},{"../lang/isObject":411}],402:[function(require,module,exports){
var baseClone = require('../internal/baseClone'),
    bindCallback = require('../internal/bindCallback'),
    isIterateeCall = require('../internal/isIterateeCall');

/**
 * Creates a clone of `value`. If `isDeep` is `true` nested objects are cloned,
 * otherwise they are assigned by reference. If `customizer` is provided it is
 * invoked to produce the cloned values. If `customizer` returns `undefined`
 * cloning is handled by the method instead. The `customizer` is bound to
 * `thisArg` and invoked with two argument; (value [, index|key, object]).
 *
 * **Note:** This method is loosely based on the
 * [structured clone algorithm](http://www.w3.org/TR/html5/infrastructure.html#internal-structured-cloning-algorithm).
 * The enumerable properties of `arguments` objects and objects created by
 * constructors other than `Object` are cloned to plain `Object` objects. An
 * empty object is returned for uncloneable values such as functions, DOM nodes,
 * Maps, Sets, and WeakMaps.
 *
 * @static
 * @memberOf _
 * @category Lang
 * @param {*} value The value to clone.
 * @param {boolean} [isDeep] Specify a deep clone.
 * @param {Function} [customizer] The function to customize cloning values.
 * @param {*} [thisArg] The `this` binding of `customizer`.
 * @returns {*} Returns the cloned value.
 * @example
 *
 * var users = [
 *   { 'user': 'barney' },
 *   { 'user': 'fred' }
 * ];
 *
 * var shallow = _.clone(users);
 * shallow[0] === users[0];
 * // => true
 *
 * var deep = _.clone(users, true);
 * deep[0] === users[0];
 * // => false
 *
 * // using a customizer callback
 * var el = _.clone(document.body, function(value) {
 *   if (_.isElement(value)) {
 *     return value.cloneNode(false);
 *   }
 * });
 *
 * el === document.body
 * // => false
 * el.nodeName
 * // => BODY
 * el.childNodes.length;
 * // => 0
 */
function clone(value, isDeep, customizer, thisArg) {
  if (isDeep && typeof isDeep != 'boolean' && isIterateeCall(value, isDeep, customizer)) {
    isDeep = false;
  }
  else if (typeof isDeep == 'function') {
    thisArg = customizer;
    customizer = isDeep;
    isDeep = false;
  }
  customizer = typeof customizer == 'function' && bindCallback(customizer, thisArg, 1);
  return baseClone(value, isDeep, customizer);
}

module.exports = clone;

},{"../internal/baseClone":347,"../internal/bindCallback":375,"../internal/isIterateeCall":394}],403:[function(require,module,exports){
var baseClone = require('../internal/baseClone'),
    bindCallback = require('../internal/bindCallback');

/**
 * Creates a deep clone of `value`. If `customizer` is provided it is invoked
 * to produce the cloned values. If `customizer` returns `undefined` cloning
 * is handled by the method instead. The `customizer` is bound to `thisArg`
 * and invoked with two argument; (value [, index|key, object]).
 *
 * **Note:** This method is loosely based on the
 * [structured clone algorithm](http://www.w3.org/TR/html5/infrastructure.html#internal-structured-cloning-algorithm).
 * The enumerable properties of `arguments` objects and objects created by
 * constructors other than `Object` are cloned to plain `Object` objects. An
 * empty object is returned for uncloneable values such as functions, DOM nodes,
 * Maps, Sets, and WeakMaps.
 *
 * @static
 * @memberOf _
 * @category Lang
 * @param {*} value The value to deep clone.
 * @param {Function} [customizer] The function to customize cloning values.
 * @param {*} [thisArg] The `this` binding of `customizer`.
 * @returns {*} Returns the deep cloned value.
 * @example
 *
 * var users = [
 *   { 'user': 'barney' },
 *   { 'user': 'fred' }
 * ];
 *
 * var deep = _.cloneDeep(users);
 * deep[0] === users[0];
 * // => false
 *
 * // using a customizer callback
 * var el = _.cloneDeep(document.body, function(value) {
 *   if (_.isElement(value)) {
 *     return value.cloneNode(true);
 *   }
 * });
 *
 * el === document.body
 * // => false
 * el.nodeName
 * // => BODY
 * el.childNodes.length;
 * // => 20
 */
function cloneDeep(value, customizer, thisArg) {
  customizer = typeof customizer == 'function' && bindCallback(customizer, thisArg, 1);
  return baseClone(value, true, customizer);
}

module.exports = cloneDeep;

},{"../internal/baseClone":347,"../internal/bindCallback":375}],404:[function(require,module,exports){
var isLength = require('../internal/isLength'),
    isObjectLike = require('../internal/isObjectLike');

/** `Object#toString` result references. */
var argsTag = '[object Arguments]';

/** Used for native method references. */
var objectProto = Object.prototype;

/**
 * Used to resolve the [`toStringTag`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-object.prototype.tostring)
 * of values.
 */
var objToString = objectProto.toString;

/**
 * Checks if `value` is classified as an `arguments` object.
 *
 * @static
 * @memberOf _
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
 * @example
 *
 * _.isArguments(function() { return arguments; }());
 * // => true
 *
 * _.isArguments([1, 2, 3]);
 * // => false
 */
function isArguments(value) {
  var length = isObjectLike(value) ? value.length : undefined;
  return isLength(length) && objToString.call(value) == argsTag;
}

module.exports = isArguments;

},{"../internal/isLength":395,"../internal/isObjectLike":396}],405:[function(require,module,exports){
var isLength = require('../internal/isLength'),
    isNative = require('./isNative'),
    isObjectLike = require('../internal/isObjectLike');

/** `Object#toString` result references. */
var arrayTag = '[object Array]';

/** Used for native method references. */
var objectProto = Object.prototype;

/**
 * Used to resolve the [`toStringTag`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-object.prototype.tostring)
 * of values.
 */
var objToString = objectProto.toString;

/* Native method references for those with the same name as other `lodash` methods. */
var nativeIsArray = isNative(nativeIsArray = Array.isArray) && nativeIsArray;

/**
 * Checks if `value` is classified as an `Array` object.
 *
 * @static
 * @memberOf _
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
 * @example
 *
 * _.isArray([1, 2, 3]);
 * // => true
 *
 * _.isArray(function() { return arguments; }());
 * // => false
 */
var isArray = nativeIsArray || function(value) {
  return isObjectLike(value) && isLength(value.length) && objToString.call(value) == arrayTag;
};

module.exports = isArray;

},{"../internal/isLength":395,"../internal/isObjectLike":396,"./isNative":409}],406:[function(require,module,exports){
var isObjectLike = require('../internal/isObjectLike');

/** `Object#toString` result references. */
var boolTag = '[object Boolean]';

/** Used for native method references. */
var objectProto = Object.prototype;

/**
 * Used to resolve the [`toStringTag`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-object.prototype.tostring)
 * of values.
 */
var objToString = objectProto.toString;

/**
 * Checks if `value` is classified as a boolean primitive or object.
 *
 * @static
 * @memberOf _
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
 * @example
 *
 * _.isBoolean(false);
 * // => true
 *
 * _.isBoolean(null);
 * // => false
 */
function isBoolean(value) {
  return value === true || value === false || (isObjectLike(value) && objToString.call(value) == boolTag);
}

module.exports = isBoolean;

},{"../internal/isObjectLike":396}],407:[function(require,module,exports){
var isArguments = require('./isArguments'),
    isArray = require('./isArray'),
    isFunction = require('./isFunction'),
    isLength = require('../internal/isLength'),
    isObjectLike = require('../internal/isObjectLike'),
    isString = require('./isString'),
    keys = require('../object/keys');

/**
 * Checks if `value` is empty. A value is considered empty unless it is an
 * `arguments` object, array, string, or jQuery-like collection with a length
 * greater than `0` or an object with own enumerable properties.
 *
 * @static
 * @memberOf _
 * @category Lang
 * @param {Array|Object|string} value The value to inspect.
 * @returns {boolean} Returns `true` if `value` is empty, else `false`.
 * @example
 *
 * _.isEmpty(null);
 * // => true
 *
 * _.isEmpty(true);
 * // => true
 *
 * _.isEmpty(1);
 * // => true
 *
 * _.isEmpty([1, 2, 3]);
 * // => false
 *
 * _.isEmpty({ 'a': 1 });
 * // => false
 */
function isEmpty(value) {
  if (value == null) {
    return true;
  }
  var length = value.length;
  if (isLength(length) && (isArray(value) || isString(value) || isArguments(value) ||
      (isObjectLike(value) && isFunction(value.splice)))) {
    return !length;
  }
  return !keys(value).length;
}

module.exports = isEmpty;

},{"../internal/isLength":395,"../internal/isObjectLike":396,"../object/keys":421,"./isArguments":404,"./isArray":405,"./isFunction":408,"./isString":414}],408:[function(require,module,exports){
(function (global){
var baseIsFunction = require('../internal/baseIsFunction'),
    isNative = require('./isNative');

/** `Object#toString` result references. */
var funcTag = '[object Function]';

/** Used for native method references. */
var objectProto = Object.prototype;

/**
 * Used to resolve the [`toStringTag`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-object.prototype.tostring)
 * of values.
 */
var objToString = objectProto.toString;

/** Native method references. */
var Uint8Array = isNative(Uint8Array = global.Uint8Array) && Uint8Array;

/**
 * Checks if `value` is classified as a `Function` object.
 *
 * @static
 * @memberOf _
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
 * @example
 *
 * _.isFunction(_);
 * // => true
 *
 * _.isFunction(/abc/);
 * // => false
 */
var isFunction = !(baseIsFunction(/x/) || (Uint8Array && !baseIsFunction(Uint8Array))) ? baseIsFunction : function(value) {
  // The use of `Object#toString` avoids issues with the `typeof` operator
  // in older versions of Chrome and Safari which return 'function' for regexes
  // and Safari 8 equivalents which return 'object' for typed array constructors.
  return objToString.call(value) == funcTag;
};

module.exports = isFunction;

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../internal/baseIsFunction":361,"./isNative":409}],409:[function(require,module,exports){
var escapeRegExp = require('../string/escapeRegExp'),
    isObjectLike = require('../internal/isObjectLike');

/** `Object#toString` result references. */
var funcTag = '[object Function]';

/** Used to detect host constructors (Safari > 5). */
var reHostCtor = /^\[object .+?Constructor\]$/;

/** Used for native method references. */
var objectProto = Object.prototype;

/** Used to resolve the decompiled source of functions. */
var fnToString = Function.prototype.toString;

/**
 * Used to resolve the [`toStringTag`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-object.prototype.tostring)
 * of values.
 */
var objToString = objectProto.toString;

/** Used to detect if a method is native. */
var reNative = RegExp('^' +
  escapeRegExp(objToString)
  .replace(/toString|(function).*?(?=\\\()| for .+?(?=\\\])/g, '$1.*?') + '$'
);

/**
 * Checks if `value` is a native function.
 *
 * @static
 * @memberOf _
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a native function, else `false`.
 * @example
 *
 * _.isNative(Array.prototype.push);
 * // => true
 *
 * _.isNative(_);
 * // => false
 */
function isNative(value) {
  if (value == null) {
    return false;
  }
  if (objToString.call(value) == funcTag) {
    return reNative.test(fnToString.call(value));
  }
  return isObjectLike(value) && reHostCtor.test(value);
}

module.exports = isNative;

},{"../internal/isObjectLike":396,"../string/escapeRegExp":425}],410:[function(require,module,exports){
var isObjectLike = require('../internal/isObjectLike');

/** `Object#toString` result references. */
var numberTag = '[object Number]';

/** Used for native method references. */
var objectProto = Object.prototype;

/**
 * Used to resolve the [`toStringTag`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-object.prototype.tostring)
 * of values.
 */
var objToString = objectProto.toString;

/**
 * Checks if `value` is classified as a `Number` primitive or object.
 *
 * **Note:** To exclude `Infinity`, `-Infinity`, and `NaN`, which are classified
 * as numbers, use the `_.isFinite` method.
 *
 * @static
 * @memberOf _
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
 * @example
 *
 * _.isNumber(8.4);
 * // => true
 *
 * _.isNumber(NaN);
 * // => true
 *
 * _.isNumber('8.4');
 * // => false
 */
function isNumber(value) {
  return typeof value == 'number' || (isObjectLike(value) && objToString.call(value) == numberTag);
}

module.exports = isNumber;

},{"../internal/isObjectLike":396}],411:[function(require,module,exports){
/**
 * Checks if `value` is the [language type](https://es5.github.io/#x8) of `Object`.
 * (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
 *
 * @static
 * @memberOf _
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is an object, else `false`.
 * @example
 *
 * _.isObject({});
 * // => true
 *
 * _.isObject([1, 2, 3]);
 * // => true
 *
 * _.isObject(1);
 * // => false
 */
function isObject(value) {
  // Avoid a V8 JIT bug in Chrome 19-20.
  // See https://code.google.com/p/v8/issues/detail?id=2291 for more details.
  var type = typeof value;
  return type == 'function' || (!!value && type == 'object');
}

module.exports = isObject;

},{}],412:[function(require,module,exports){
var isNative = require('./isNative'),
    shimIsPlainObject = require('../internal/shimIsPlainObject');

/** `Object#toString` result references. */
var objectTag = '[object Object]';

/** Used for native method references. */
var objectProto = Object.prototype;

/**
 * Used to resolve the [`toStringTag`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-object.prototype.tostring)
 * of values.
 */
var objToString = objectProto.toString;

/** Native method references. */
var getPrototypeOf = isNative(getPrototypeOf = Object.getPrototypeOf) && getPrototypeOf;

/**
 * Checks if `value` is a plain object, that is, an object created by the
 * `Object` constructor or one with a `[[Prototype]]` of `null`.
 *
 * **Note:** This method assumes objects created by the `Object` constructor
 * have no inherited enumerable properties.
 *
 * @static
 * @memberOf _
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a plain object, else `false`.
 * @example
 *
 * function Foo() {
 *   this.a = 1;
 * }
 *
 * _.isPlainObject(new Foo);
 * // => false
 *
 * _.isPlainObject([1, 2, 3]);
 * // => false
 *
 * _.isPlainObject({ 'x': 0, 'y': 0 });
 * // => true
 *
 * _.isPlainObject(Object.create(null));
 * // => true
 */
var isPlainObject = !getPrototypeOf ? shimIsPlainObject : function(value) {
  if (!(value && objToString.call(value) == objectTag)) {
    return false;
  }
  var valueOf = value.valueOf,
      objProto = isNative(valueOf) && (objProto = getPrototypeOf(valueOf)) && getPrototypeOf(objProto);

  return objProto
    ? (value == objProto || getPrototypeOf(value) == objProto)
    : shimIsPlainObject(value);
};

module.exports = isPlainObject;

},{"../internal/shimIsPlainObject":398,"./isNative":409}],413:[function(require,module,exports){
var isObjectLike = require('../internal/isObjectLike');

/** `Object#toString` result references. */
var regexpTag = '[object RegExp]';

/** Used for native method references. */
var objectProto = Object.prototype;

/**
 * Used to resolve the [`toStringTag`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-object.prototype.tostring)
 * of values.
 */
var objToString = objectProto.toString;

/**
 * Checks if `value` is classified as a `RegExp` object.
 *
 * @static
 * @memberOf _
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
 * @example
 *
 * _.isRegExp(/abc/);
 * // => true
 *
 * _.isRegExp('/abc/');
 * // => false
 */
function isRegExp(value) {
  return (isObjectLike(value) && objToString.call(value) == regexpTag) || false;
}

module.exports = isRegExp;

},{"../internal/isObjectLike":396}],414:[function(require,module,exports){
var isObjectLike = require('../internal/isObjectLike');

/** `Object#toString` result references. */
var stringTag = '[object String]';

/** Used for native method references. */
var objectProto = Object.prototype;

/**
 * Used to resolve the [`toStringTag`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-object.prototype.tostring)
 * of values.
 */
var objToString = objectProto.toString;

/**
 * Checks if `value` is classified as a `String` primitive or object.
 *
 * @static
 * @memberOf _
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
 * @example
 *
 * _.isString('abc');
 * // => true
 *
 * _.isString(1);
 * // => false
 */
function isString(value) {
  return typeof value == 'string' || (isObjectLike(value) && objToString.call(value) == stringTag);
}

module.exports = isString;

},{"../internal/isObjectLike":396}],415:[function(require,module,exports){
var isLength = require('../internal/isLength'),
    isObjectLike = require('../internal/isObjectLike');

/** `Object#toString` result references. */
var argsTag = '[object Arguments]',
    arrayTag = '[object Array]',
    boolTag = '[object Boolean]',
    dateTag = '[object Date]',
    errorTag = '[object Error]',
    funcTag = '[object Function]',
    mapTag = '[object Map]',
    numberTag = '[object Number]',
    objectTag = '[object Object]',
    regexpTag = '[object RegExp]',
    setTag = '[object Set]',
    stringTag = '[object String]',
    weakMapTag = '[object WeakMap]';

var arrayBufferTag = '[object ArrayBuffer]',
    float32Tag = '[object Float32Array]',
    float64Tag = '[object Float64Array]',
    int8Tag = '[object Int8Array]',
    int16Tag = '[object Int16Array]',
    int32Tag = '[object Int32Array]',
    uint8Tag = '[object Uint8Array]',
    uint8ClampedTag = '[object Uint8ClampedArray]',
    uint16Tag = '[object Uint16Array]',
    uint32Tag = '[object Uint32Array]';

/** Used to identify `toStringTag` values of typed arrays. */
var typedArrayTags = {};
typedArrayTags[float32Tag] = typedArrayTags[float64Tag] =
typedArrayTags[int8Tag] = typedArrayTags[int16Tag] =
typedArrayTags[int32Tag] = typedArrayTags[uint8Tag] =
typedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] =
typedArrayTags[uint32Tag] = true;
typedArrayTags[argsTag] = typedArrayTags[arrayTag] =
typedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] =
typedArrayTags[dateTag] = typedArrayTags[errorTag] =
typedArrayTags[funcTag] = typedArrayTags[mapTag] =
typedArrayTags[numberTag] = typedArrayTags[objectTag] =
typedArrayTags[regexpTag] = typedArrayTags[setTag] =
typedArrayTags[stringTag] = typedArrayTags[weakMapTag] = false;

/** Used for native method references. */
var objectProto = Object.prototype;

/**
 * Used to resolve the [`toStringTag`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-object.prototype.tostring)
 * of values.
 */
var objToString = objectProto.toString;

/**
 * Checks if `value` is classified as a typed array.
 *
 * @static
 * @memberOf _
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
 * @example
 *
 * _.isTypedArray(new Uint8Array);
 * // => true
 *
 * _.isTypedArray([]);
 * // => false
 */
function isTypedArray(value) {
  return isObjectLike(value) && isLength(value.length) && !!typedArrayTags[objToString.call(value)];
}

module.exports = isTypedArray;

},{"../internal/isLength":395,"../internal/isObjectLike":396}],416:[function(require,module,exports){
var baseCopy = require('../internal/baseCopy'),
    keysIn = require('../object/keysIn');

/**
 * Converts `value` to a plain object flattening inherited enumerable
 * properties of `value` to own properties of the plain object.
 *
 * @static
 * @memberOf _
 * @category Lang
 * @param {*} value The value to convert.
 * @returns {Object} Returns the converted plain object.
 * @example
 *
 * function Foo() {
 *   this.b = 2;
 * }
 *
 * Foo.prototype.c = 3;
 *
 * _.assign({ 'a': 1 }, new Foo);
 * // => { 'a': 1, 'b': 2 }
 *
 * _.assign({ 'a': 1 }, _.toPlainObject(new Foo));
 * // => { 'a': 1, 'b': 2, 'c': 3 }
 */
function toPlainObject(value) {
  return baseCopy(value, keysIn(value));
}

module.exports = toPlainObject;

},{"../internal/baseCopy":349,"../object/keysIn":422}],417:[function(require,module,exports){
var baseAssign = require('../internal/baseAssign'),
    createAssigner = require('../internal/createAssigner');

/**
 * Assigns own enumerable properties of source object(s) to the destination
 * object. Subsequent sources overwrite property assignments of previous sources.
 * If `customizer` is provided it is invoked to produce the assigned values.
 * The `customizer` is bound to `thisArg` and invoked with five arguments:
 * (objectValue, sourceValue, key, object, source).
 *
 * @static
 * @memberOf _
 * @alias extend
 * @category Object
 * @param {Object} object The destination object.
 * @param {...Object} [sources] The source objects.
 * @param {Function} [customizer] The function to customize assigning values.
 * @param {*} [thisArg] The `this` binding of `customizer`.
 * @returns {Object} Returns `object`.
 * @example
 *
 * _.assign({ 'user': 'barney' }, { 'age': 40 }, { 'user': 'fred' });
 * // => { 'user': 'fred', 'age': 40 }
 *
 * // using a customizer callback
 * var defaults = _.partialRight(_.assign, function(value, other) {
 *   return typeof value == 'undefined' ? other : value;
 * });
 *
 * defaults({ 'user': 'barney' }, { 'age': 36 }, { 'user': 'fred' });
 * // => { 'user': 'barney', 'age': 36 }
 */
var assign = createAssigner(baseAssign);

module.exports = assign;

},{"../internal/baseAssign":345,"../internal/createAssigner":380}],418:[function(require,module,exports){
var assign = require('./assign'),
    assignDefaults = require('../internal/assignDefaults'),
    restParam = require('../function/restParam');

/**
 * Assigns own enumerable properties of source object(s) to the destination
 * object for all destination properties that resolve to `undefined`. Once a
 * property is set, additional values of the same property are ignored.
 *
 * @static
 * @memberOf _
 * @category Object
 * @param {Object} object The destination object.
 * @param {...Object} [sources] The source objects.
 * @returns {Object} Returns `object`.
 * @example
 *
 * _.defaults({ 'user': 'barney' }, { 'age': 36 }, { 'user': 'fred' });
 * // => { 'user': 'barney', 'age': 36 }
 */
var defaults = restParam(function(args) {
  var object = args[0];
  if (object == null) {
    return object;
  }
  args.push(assignDefaults);
  return assign.apply(undefined, args);
});

module.exports = defaults;

},{"../function/restParam":337,"../internal/assignDefaults":344,"./assign":417}],419:[function(require,module,exports){
module.exports = require('./assign');

},{"./assign":417}],420:[function(require,module,exports){
/** Used for native method references. */
var objectProto = Object.prototype;

/** Used to check objects for own properties. */
var hasOwnProperty = objectProto.hasOwnProperty;

/**
 * Checks if `key` exists as a direct property of `object` instead of an
 * inherited property.
 *
 * @static
 * @memberOf _
 * @category Object
 * @param {Object} object The object to inspect.
 * @param {string} key The key to check.
 * @returns {boolean} Returns `true` if `key` is a direct property, else `false`.
 * @example
 *
 * var object = { 'a': 1, 'b': 2, 'c': 3 };
 *
 * _.has(object, 'b');
 * // => true
 */
function has(object, key) {
  return object ? hasOwnProperty.call(object, key) : false;
}

module.exports = has;

},{}],421:[function(require,module,exports){
var isLength = require('../internal/isLength'),
    isNative = require('../lang/isNative'),
    isObject = require('../lang/isObject'),
    shimKeys = require('../internal/shimKeys');

/* Native method references for those with the same name as other `lodash` methods. */
var nativeKeys = isNative(nativeKeys = Object.keys) && nativeKeys;

/**
 * Creates an array of the own enumerable property names of `object`.
 *
 * **Note:** Non-object values are coerced to objects. See the
 * [ES spec](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-object.keys)
 * for more details.
 *
 * @static
 * @memberOf _
 * @category Object
 * @param {Object} object The object to inspect.
 * @returns {Array} Returns the array of property names.
 * @example
 *
 * function Foo() {
 *   this.a = 1;
 *   this.b = 2;
 * }
 *
 * Foo.prototype.c = 3;
 *
 * _.keys(new Foo);
 * // => ['a', 'b'] (iteration order is not guaranteed)
 *
 * _.keys('hi');
 * // => ['0', '1']
 */
var keys = !nativeKeys ? shimKeys : function(object) {
  if (object) {
    var Ctor = object.constructor,
        length = object.length;
  }
  if ((typeof Ctor == 'function' && Ctor.prototype === object) ||
      (typeof object != 'function' && (length && isLength(length)))) {
    return shimKeys(object);
  }
  return isObject(object) ? nativeKeys(object) : [];
};

module.exports = keys;

},{"../internal/isLength":395,"../internal/shimKeys":399,"../lang/isNative":409,"../lang/isObject":411}],422:[function(require,module,exports){
var isArguments = require('../lang/isArguments'),
    isArray = require('../lang/isArray'),
    isIndex = require('../internal/isIndex'),
    isLength = require('../internal/isLength'),
    isObject = require('../lang/isObject'),
    support = require('../support');

/** Used for native method references. */
var objectProto = Object.prototype;

/** Used to check objects for own properties. */
var hasOwnProperty = objectProto.hasOwnProperty;

/**
 * Creates an array of the own and inherited enumerable property names of `object`.
 *
 * **Note:** Non-object values are coerced to objects.
 *
 * @static
 * @memberOf _
 * @category Object
 * @param {Object} object The object to inspect.
 * @returns {Array} Returns the array of property names.
 * @example
 *
 * function Foo() {
 *   this.a = 1;
 *   this.b = 2;
 * }
 *
 * Foo.prototype.c = 3;
 *
 * _.keysIn(new Foo);
 * // => ['a', 'b', 'c'] (iteration order is not guaranteed)
 */
function keysIn(object) {
  if (object == null) {
    return [];
  }
  if (!isObject(object)) {
    object = Object(object);
  }
  var length = object.length;
  length = (length && isLength(length) &&
    (isArray(object) || (support.nonEnumArgs && isArguments(object))) && length) || 0;

  var Ctor = object.constructor,
      index = -1,
      isProto = typeof Ctor == 'function' && Ctor.prototype === object,
      result = Array(length),
      skipIndexes = length > 0;

  while (++index < length) {
    result[index] = (index + '');
  }
  for (var key in object) {
    if (!(skipIndexes && isIndex(key, length)) &&
        !(key == 'constructor' && (isProto || !hasOwnProperty.call(object, key)))) {
      result.push(key);
    }
  }
  return result;
}

module.exports = keysIn;

},{"../internal/isIndex":393,"../internal/isLength":395,"../lang/isArguments":404,"../lang/isArray":405,"../lang/isObject":411,"../support":427}],423:[function(require,module,exports){
var baseMerge = require('../internal/baseMerge'),
    createAssigner = require('../internal/createAssigner');

/**
 * Recursively merges own enumerable properties of the source object(s), that
 * don't resolve to `undefined` into the destination object. Subsequent sources
 * overwrite property assignments of previous sources. If `customizer` is
 * provided it is invoked to produce the merged values of the destination and
 * source properties. If `customizer` returns `undefined` merging is handled
 * by the method instead. The `customizer` is bound to `thisArg` and invoked
 * with five arguments: (objectValue, sourceValue, key, object, source).
 *
 * @static
 * @memberOf _
 * @category Object
 * @param {Object} object The destination object.
 * @param {...Object} [sources] The source objects.
 * @param {Function} [customizer] The function to customize merging properties.
 * @param {*} [thisArg] The `this` binding of `customizer`.
 * @returns {Object} Returns `object`.
 * @example
 *
 * var users = {
 *   'data': [{ 'user': 'barney' }, { 'user': 'fred' }]
 * };
 *
 * var ages = {
 *   'data': [{ 'age': 36 }, { 'age': 40 }]
 * };
 *
 * _.merge(users, ages);
 * // => { 'data': [{ 'user': 'barney', 'age': 36 }, { 'user': 'fred', 'age': 40 }] }
 *
 * // using a customizer callback
 * var object = {
 *   'fruits': ['apple'],
 *   'vegetables': ['beet']
 * };
 *
 * var other = {
 *   'fruits': ['banana'],
 *   'vegetables': ['carrot']
 * };
 *
 * _.merge(object, other, function(a, b) {
 *   if (_.isArray(a)) {
 *     return a.concat(b);
 *   }
 * });
 * // => { 'fruits': ['apple', 'banana'], 'vegetables': ['beet', 'carrot'] }
 */
var merge = createAssigner(baseMerge);

module.exports = merge;

},{"../internal/baseMerge":366,"../internal/createAssigner":380}],424:[function(require,module,exports){
var baseValues = require('../internal/baseValues'),
    keys = require('./keys');

/**
 * Creates an array of the own enumerable property values of `object`.
 *
 * **Note:** Non-object values are coerced to objects.
 *
 * @static
 * @memberOf _
 * @category Object
 * @param {Object} object The object to query.
 * @returns {Array} Returns the array of property values.
 * @example
 *
 * function Foo() {
 *   this.a = 1;
 *   this.b = 2;
 * }
 *
 * Foo.prototype.c = 3;
 *
 * _.values(new Foo);
 * // => [1, 2] (iteration order is not guaranteed)
 *
 * _.values('hi');
 * // => ['h', 'i']
 */
function values(object) {
  return baseValues(object, keys(object));
}

module.exports = values;

},{"../internal/baseValues":374,"./keys":421}],425:[function(require,module,exports){
var baseToString = require('../internal/baseToString');

/**
 * Used to match `RegExp` [special characters](http://www.regular-expressions.info/characters.html#special).
 * In addition to special characters the forward slash is escaped to allow for
 * easier `eval` use and `Function` compilation.
 */
var reRegExpChars = /[.*+?^${}()|[\]\/\\]/g,
    reHasRegExpChars = RegExp(reRegExpChars.source);

/**
 * Escapes the `RegExp` special characters "\", "/", "^", "$", ".", "|", "?",
 * "*", "+", "(", ")", "[", "]", "{" and "}" in `string`.
 *
 * @static
 * @memberOf _
 * @category String
 * @param {string} [string=''] The string to escape.
 * @returns {string} Returns the escaped string.
 * @example
 *
 * _.escapeRegExp('[lodash](https://lodash.com/)');
 * // => '\[lodash\]\(https:\/\/lodash\.com\/\)'
 */
function escapeRegExp(string) {
  string = baseToString(string);
  return (string && reHasRegExpChars.test(string))
    ? string.replace(reRegExpChars, '\\$&')
    : string;
}

module.exports = escapeRegExp;

},{"../internal/baseToString":372}],426:[function(require,module,exports){
var baseToString = require('../internal/baseToString');

/* Native method references for those with the same name as other `lodash` methods. */
var nativeMin = Math.min;

/**
 * Checks if `string` starts with the given target string.
 *
 * @static
 * @memberOf _
 * @category String
 * @param {string} [string=''] The string to search.
 * @param {string} [target] The string to search for.
 * @param {number} [position=0] The position to search from.
 * @returns {boolean} Returns `true` if `string` starts with `target`, else `false`.
 * @example
 *
 * _.startsWith('abc', 'a');
 * // => true
 *
 * _.startsWith('abc', 'b');
 * // => false
 *
 * _.startsWith('abc', 'b', 1);
 * // => true
 */
function startsWith(string, target, position) {
  string = baseToString(string);
  position = position == null
    ? 0
    : nativeMin(position < 0 ? 0 : (+position || 0), string.length);

  return string.lastIndexOf(target, position) == position;
}

module.exports = startsWith;

},{"../internal/baseToString":372}],427:[function(require,module,exports){
(function (global){
/** Used for native method references. */
var objectProto = Object.prototype;

/** Used to detect DOM support. */
var document = (document = global.window) && document.document;

/** Native method references. */
var propertyIsEnumerable = objectProto.propertyIsEnumerable;

/**
 * An object environment feature flags.
 *
 * @static
 * @memberOf _
 * @type Object
 */
var support = {};

(function(x) {

  /**
   * Detect if functions can be decompiled by `Function#toString`
   * (all but Firefox OS certified apps, older Opera mobile browsers, and
   * the PlayStation 3; forced `false` for Windows 8 apps).
   *
   * @memberOf _.support
   * @type boolean
   */
  support.funcDecomp = /\bthis\b/.test(function() { return this; });

  /**
   * Detect if `Function#name` is supported (all but IE).
   *
   * @memberOf _.support
   * @type boolean
   */
  support.funcNames = typeof Function.name == 'string';

  /**
   * Detect if the DOM is supported.
   *
   * @memberOf _.support
   * @type boolean
   */
  try {
    support.dom = document.createDocumentFragment().nodeType === 11;
  } catch(e) {
    support.dom = false;
  }

  /**
   * Detect if `arguments` object indexes are non-enumerable.
   *
   * In Firefox < 4, IE < 9, PhantomJS, and Safari < 5.1 `arguments` object
   * indexes are non-enumerable. Chrome < 25 and Node.js < 0.11.0 treat
   * `arguments` object indexes as non-enumerable and fail `hasOwnProperty`
   * checks for indexes that exceed their function's formal parameters with
   * associated values of `0`.
   *
   * @memberOf _.support
   * @type boolean
   */
  try {
    support.nonEnumArgs = !propertyIsEnumerable.call(arguments, 1);
  } catch(e) {
    support.nonEnumArgs = true;
  }
}(0, 0));

module.exports = support;

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],428:[function(require,module,exports){
/**
 * Creates a function that returns `value`.
 *
 * @static
 * @memberOf _
 * @category Utility
 * @param {*} value The value to return from the new function.
 * @returns {Function} Returns the new function.
 * @example
 *
 * var object = { 'user': 'fred' };
 * var getter = _.constant(object);
 *
 * getter() === object;
 * // => true
 */
function constant(value) {
  return function() {
    return value;
  };
}

module.exports = constant;

},{}],429:[function(require,module,exports){
/**
 * This method returns the first argument provided to it.
 *
 * @static
 * @memberOf _
 * @category Utility
 * @param {*} value Any value.
 * @returns {*} Returns `value`.
 * @example
 *
 * var object = { 'user': 'fred' };
 *
 * _.identity(object) === object;
 * // => true
 */
function identity(value) {
  return value;
}

module.exports = identity;

},{}],430:[function(require,module,exports){
(function (process){
module.exports = minimatch
minimatch.Minimatch = Minimatch

var isWindows = false
if (typeof process !== 'undefined' && process.platform === 'win32')
  isWindows = true

var GLOBSTAR = minimatch.GLOBSTAR = Minimatch.GLOBSTAR = {}
  , expand = require("brace-expansion")

  // any single thing other than /
  // don't need to escape / when using new RegExp()
  , qmark = "[^/]"

  // * => any number of characters
  , star = qmark + "*?"

  // ** when dots are allowed.  Anything goes, except .. and .
  // not (^ or / followed by one or two dots followed by $ or /),
  // followed by anything, any number of times.
  , twoStarDot = "(?:(?!(?:\\\/|^)(?:\\.{1,2})($|\\\/)).)*?"

  // not a ^ or / followed by a dot,
  // followed by anything, any number of times.
  , twoStarNoDot = "(?:(?!(?:\\\/|^)\\.).)*?"

  // characters that need to be escaped in RegExp.
  , reSpecials = charSet("().*{}+?[]^$\\!")

// "abc" -> { a:true, b:true, c:true }
function charSet (s) {
  return s.split("").reduce(function (set, c) {
    set[c] = true
    return set
  }, {})
}

// normalizes slashes.
var slashSplit = /\/+/

minimatch.filter = filter
function filter (pattern, options) {
  options = options || {}
  return function (p, i, list) {
    return minimatch(p, pattern, options)
  }
}

function ext (a, b) {
  a = a || {}
  b = b || {}
  var t = {}
  Object.keys(b).forEach(function (k) {
    t[k] = b[k]
  })
  Object.keys(a).forEach(function (k) {
    t[k] = a[k]
  })
  return t
}

minimatch.defaults = function (def) {
  if (!def || !Object.keys(def).length) return minimatch

  var orig = minimatch

  var m = function minimatch (p, pattern, options) {
    return orig.minimatch(p, pattern, ext(def, options))
  }

  m.Minimatch = function Minimatch (pattern, options) {
    return new orig.Minimatch(pattern, ext(def, options))
  }

  return m
}

Minimatch.defaults = function (def) {
  if (!def || !Object.keys(def).length) return Minimatch
  return minimatch.defaults(def).Minimatch
}


function minimatch (p, pattern, options) {
  if (typeof pattern !== "string") {
    throw new TypeError("glob pattern string required")
  }

  if (!options) options = {}

  // shortcut: comments match nothing.
  if (!options.nocomment && pattern.charAt(0) === "#") {
    return false
  }

  // "" only matches ""
  if (pattern.trim() === "") return p === ""

  return new Minimatch(pattern, options).match(p)
}

function Minimatch (pattern, options) {
  if (!(this instanceof Minimatch)) {
    return new Minimatch(pattern, options)
  }

  if (typeof pattern !== "string") {
    throw new TypeError("glob pattern string required")
  }

  if (!options) options = {}
  pattern = pattern.trim()

  // windows support: need to use /, not \
  if (isWindows)
    pattern = pattern.split("\\").join("/")

  this.options = options
  this.set = []
  this.pattern = pattern
  this.regexp = null
  this.negate = false
  this.comment = false
  this.empty = false

  // make the set of regexps etc.
  this.make()
}

Minimatch.prototype.debug = function() {}

Minimatch.prototype.make = make
function make () {
  // don't do it more than once.
  if (this._made) return

  var pattern = this.pattern
  var options = this.options

  // empty patterns and comments match nothing.
  if (!options.nocomment && pattern.charAt(0) === "#") {
    this.comment = true
    return
  }
  if (!pattern) {
    this.empty = true
    return
  }

  // step 1: figure out negation, etc.
  this.parseNegate()

  // step 2: expand braces
  var set = this.globSet = this.braceExpand()

  if (options.debug) this.debug = console.error

  this.debug(this.pattern, set)

  // step 3: now we have a set, so turn each one into a series of path-portion
  // matching patterns.
  // These will be regexps, except in the case of "**", which is
  // set to the GLOBSTAR object for globstar behavior,
  // and will not contain any / characters
  set = this.globParts = set.map(function (s) {
    return s.split(slashSplit)
  })

  this.debug(this.pattern, set)

  // glob --> regexps
  set = set.map(function (s, si, set) {
    return s.map(this.parse, this)
  }, this)

  this.debug(this.pattern, set)

  // filter out everything that didn't compile properly.
  set = set.filter(function (s) {
    return -1 === s.indexOf(false)
  })

  this.debug(this.pattern, set)

  this.set = set
}

Minimatch.prototype.parseNegate = parseNegate
function parseNegate () {
  var pattern = this.pattern
    , negate = false
    , options = this.options
    , negateOffset = 0

  if (options.nonegate) return

  for ( var i = 0, l = pattern.length
      ; i < l && pattern.charAt(i) === "!"
      ; i ++) {
    negate = !negate
    negateOffset ++
  }

  if (negateOffset) this.pattern = pattern.substr(negateOffset)
  this.negate = negate
}

// Brace expansion:
// a{b,c}d -> abd acd
// a{b,}c -> abc ac
// a{0..3}d -> a0d a1d a2d a3d
// a{b,c{d,e}f}g -> abg acdfg acefg
// a{b,c}d{e,f}g -> abdeg acdeg abdeg abdfg
//
// Invalid sets are not expanded.
// a{2..}b -> a{2..}b
// a{b}c -> a{b}c
minimatch.braceExpand = function (pattern, options) {
  return braceExpand(pattern, options)
}

Minimatch.prototype.braceExpand = braceExpand

function braceExpand (pattern, options) {
  if (!options) {
    if (this instanceof Minimatch)
      options = this.options
    else
      options = {}
  }

  pattern = typeof pattern === "undefined"
    ? this.pattern : pattern

  if (typeof pattern === "undefined") {
    throw new Error("undefined pattern")
  }

  if (options.nobrace ||
      !pattern.match(/\{.*\}/)) {
    // shortcut. no need to expand.
    return [pattern]
  }

  return expand(pattern)
}

// parse a component of the expanded set.
// At this point, no pattern may contain "/" in it
// so we're going to return a 2d array, where each entry is the full
// pattern, split on '/', and then turned into a regular expression.
// A regexp is made at the end which joins each array with an
// escaped /, and another full one which joins each regexp with |.
//
// Following the lead of Bash 4.1, note that "**" only has special meaning
// when it is the *only* thing in a path portion.  Otherwise, any series
// of * is equivalent to a single *.  Globstar behavior is enabled by
// default, and can be disabled by setting options.noglobstar.
Minimatch.prototype.parse = parse
var SUBPARSE = {}
function parse (pattern, isSub) {
  var options = this.options

  // shortcuts
  if (!options.noglobstar && pattern === "**") return GLOBSTAR
  if (pattern === "") return ""

  var re = ""
    , hasMagic = !!options.nocase
    , escaping = false
    // ? => one single character
    , patternListStack = []
    , plType
    , stateChar
    , inClass = false
    , reClassStart = -1
    , classStart = -1
    // . and .. never match anything that doesn't start with .,
    // even when options.dot is set.
    , patternStart = pattern.charAt(0) === "." ? "" // anything
      // not (start or / followed by . or .. followed by / or end)
      : options.dot ? "(?!(?:^|\\\/)\\.{1,2}(?:$|\\\/))"
      : "(?!\\.)"
    , self = this

  function clearStateChar () {
    if (stateChar) {
      // we had some state-tracking character
      // that wasn't consumed by this pass.
      switch (stateChar) {
        case "*":
          re += star
          hasMagic = true
          break
        case "?":
          re += qmark
          hasMagic = true
          break
        default:
          re += "\\"+stateChar
          break
      }
      self.debug('clearStateChar %j %j', stateChar, re)
      stateChar = false
    }
  }

  for ( var i = 0, len = pattern.length, c
      ; (i < len) && (c = pattern.charAt(i))
      ; i ++ ) {

    this.debug("%s\t%s %s %j", pattern, i, re, c)

    // skip over any that are escaped.
    if (escaping && reSpecials[c]) {
      re += "\\" + c
      escaping = false
      continue
    }

    SWITCH: switch (c) {
      case "/":
        // completely not allowed, even escaped.
        // Should already be path-split by now.
        return false

      case "\\":
        clearStateChar()
        escaping = true
        continue

      // the various stateChar values
      // for the "extglob" stuff.
      case "?":
      case "*":
      case "+":
      case "@":
      case "!":
        this.debug("%s\t%s %s %j <-- stateChar", pattern, i, re, c)

        // all of those are literals inside a class, except that
        // the glob [!a] means [^a] in regexp
        if (inClass) {
          this.debug('  in class')
          if (c === "!" && i === classStart + 1) c = "^"
          re += c
          continue
        }

        // if we already have a stateChar, then it means
        // that there was something like ** or +? in there.
        // Handle the stateChar, then proceed with this one.
        self.debug('call clearStateChar %j', stateChar)
        clearStateChar()
        stateChar = c
        // if extglob is disabled, then +(asdf|foo) isn't a thing.
        // just clear the statechar *now*, rather than even diving into
        // the patternList stuff.
        if (options.noext) clearStateChar()
        continue

      case "(":
        if (inClass) {
          re += "("
          continue
        }

        if (!stateChar) {
          re += "\\("
          continue
        }

        plType = stateChar
        patternListStack.push({ type: plType
                              , start: i - 1
                              , reStart: re.length })
        // negation is (?:(?!js)[^/]*)
        re += stateChar === "!" ? "(?:(?!" : "(?:"
        this.debug('plType %j %j', stateChar, re)
        stateChar = false
        continue

      case ")":
        if (inClass || !patternListStack.length) {
          re += "\\)"
          continue
        }

        clearStateChar()
        hasMagic = true
        re += ")"
        plType = patternListStack.pop().type
        // negation is (?:(?!js)[^/]*)
        // The others are (?:<pattern>)<type>
        switch (plType) {
          case "!":
            re += "[^/]*?)"
            break
          case "?":
          case "+":
          case "*": re += plType
          case "@": break // the default anyway
        }
        continue

      case "|":
        if (inClass || !patternListStack.length || escaping) {
          re += "\\|"
          escaping = false
          continue
        }

        clearStateChar()
        re += "|"
        continue

      // these are mostly the same in regexp and glob
      case "[":
        // swallow any state-tracking char before the [
        clearStateChar()

        if (inClass) {
          re += "\\" + c
          continue
        }

        inClass = true
        classStart = i
        reClassStart = re.length
        re += c
        continue

      case "]":
        //  a right bracket shall lose its special
        //  meaning and represent itself in
        //  a bracket expression if it occurs
        //  first in the list.  -- POSIX.2 2.8.3.2
        if (i === classStart + 1 || !inClass) {
          re += "\\" + c
          escaping = false
          continue
        }

        // handle the case where we left a class open.
        // "[z-a]" is valid, equivalent to "\[z-a\]"
        if (inClass) {
          // split where the last [ was, make sure we don't have
          // an invalid re. if so, re-walk the contents of the
          // would-be class to re-translate any characters that
          // were passed through as-is
          // TODO: It would probably be faster to determine this
          // without a try/catch and a new RegExp, but it's tricky
          // to do safely.  For now, this is safe and works.
          var cs = pattern.substring(classStart + 1, i)
          try {
            new RegExp('[' + cs + ']')
          } catch (er) {
            // not a valid class!
            var sp = this.parse(cs, SUBPARSE)
            re = re.substr(0, reClassStart) + "\\[" + sp[0] + '\\]'
            hasMagic = hasMagic || sp[1]
            inClass = false
            continue
          }
        }

        // finish up the class.
        hasMagic = true
        inClass = false
        re += c
        continue

      default:
        // swallow any state char that wasn't consumed
        clearStateChar()

        if (escaping) {
          // no need
          escaping = false
        } else if (reSpecials[c]
                   && !(c === "^" && inClass)) {
          re += "\\"
        }

        re += c

    } // switch
  } // for


  // handle the case where we left a class open.
  // "[abc" is valid, equivalent to "\[abc"
  if (inClass) {
    // split where the last [ was, and escape it
    // this is a huge pita.  We now have to re-walk
    // the contents of the would-be class to re-translate
    // any characters that were passed through as-is
    var cs = pattern.substr(classStart + 1)
      , sp = this.parse(cs, SUBPARSE)
    re = re.substr(0, reClassStart) + "\\[" + sp[0]
    hasMagic = hasMagic || sp[1]
  }

  // handle the case where we had a +( thing at the *end*
  // of the pattern.
  // each pattern list stack adds 3 chars, and we need to go through
  // and escape any | chars that were passed through as-is for the regexp.
  // Go through and escape them, taking care not to double-escape any
  // | chars that were already escaped.
  var pl
  while (pl = patternListStack.pop()) {
    var tail = re.slice(pl.reStart + 3)
    // maybe some even number of \, then maybe 1 \, followed by a |
    tail = tail.replace(/((?:\\{2})*)(\\?)\|/g, function (_, $1, $2) {
      if (!$2) {
        // the | isn't already escaped, so escape it.
        $2 = "\\"
      }

      // need to escape all those slashes *again*, without escaping the
      // one that we need for escaping the | character.  As it works out,
      // escaping an even number of slashes can be done by simply repeating
      // it exactly after itself.  That's why this trick works.
      //
      // I am sorry that you have to see this.
      return $1 + $1 + $2 + "|"
    })

    this.debug("tail=%j\n   %s", tail, tail)
    var t = pl.type === "*" ? star
          : pl.type === "?" ? qmark
          : "\\" + pl.type

    hasMagic = true
    re = re.slice(0, pl.reStart)
       + t + "\\("
       + tail
  }

  // handle trailing things that only matter at the very end.
  clearStateChar()
  if (escaping) {
    // trailing \\
    re += "\\\\"
  }

  // only need to apply the nodot start if the re starts with
  // something that could conceivably capture a dot
  var addPatternStart = false
  switch (re.charAt(0)) {
    case ".":
    case "[":
    case "(": addPatternStart = true
  }

  // if the re is not "" at this point, then we need to make sure
  // it doesn't match against an empty path part.
  // Otherwise a/* will match a/, which it should not.
  if (re !== "" && hasMagic) re = "(?=.)" + re

  if (addPatternStart) re = patternStart + re

  // parsing just a piece of a larger pattern.
  if (isSub === SUBPARSE) {
    return [ re, hasMagic ]
  }

  // skip the regexp for non-magical patterns
  // unescape anything in it, though, so that it'll be
  // an exact match against a file etc.
  if (!hasMagic) {
    return globUnescape(pattern)
  }

  var flags = options.nocase ? "i" : ""
    , regExp = new RegExp("^" + re + "$", flags)

  regExp._glob = pattern
  regExp._src = re

  return regExp
}

minimatch.makeRe = function (pattern, options) {
  return new Minimatch(pattern, options || {}).makeRe()
}

Minimatch.prototype.makeRe = makeRe
function makeRe () {
  if (this.regexp || this.regexp === false) return this.regexp

  // at this point, this.set is a 2d array of partial
  // pattern strings, or "**".
  //
  // It's better to use .match().  This function shouldn't
  // be used, really, but it's pretty convenient sometimes,
  // when you just want to work with a regex.
  var set = this.set

  if (!set.length) return this.regexp = false
  var options = this.options

  var twoStar = options.noglobstar ? star
      : options.dot ? twoStarDot
      : twoStarNoDot
    , flags = options.nocase ? "i" : ""

  var re = set.map(function (pattern) {
    return pattern.map(function (p) {
      return (p === GLOBSTAR) ? twoStar
           : (typeof p === "string") ? regExpEscape(p)
           : p._src
    }).join("\\\/")
  }).join("|")

  // must match entire pattern
  // ending in a * or ** will make it less strict.
  re = "^(?:" + re + ")$"

  // can match anything, as long as it's not this.
  if (this.negate) re = "^(?!" + re + ").*$"

  try {
    return this.regexp = new RegExp(re, flags)
  } catch (ex) {
    return this.regexp = false
  }
}

minimatch.match = function (list, pattern, options) {
  options = options || {}
  var mm = new Minimatch(pattern, options)
  list = list.filter(function (f) {
    return mm.match(f)
  })
  if (mm.options.nonull && !list.length) {
    list.push(pattern)
  }
  return list
}

Minimatch.prototype.match = match
function match (f, partial) {
  this.debug("match", f, this.pattern)
  // short-circuit in the case of busted things.
  // comments, etc.
  if (this.comment) return false
  if (this.empty) return f === ""

  if (f === "/" && partial) return true

  var options = this.options

  // windows: need to use /, not \
  if (isWindows)
    f = f.split("\\").join("/")

  // treat the test path as a set of pathparts.
  f = f.split(slashSplit)
  this.debug(this.pattern, "split", f)

  // just ONE of the pattern sets in this.set needs to match
  // in order for it to be valid.  If negating, then just one
  // match means that we have failed.
  // Either way, return on the first hit.

  var set = this.set
  this.debug(this.pattern, "set", set)

  // Find the basename of the path by looking for the last non-empty segment
  var filename;
  for (var i = f.length - 1; i >= 0; i--) {
    filename = f[i]
    if (filename) break
  }

  for (var i = 0, l = set.length; i < l; i ++) {
    var pattern = set[i], file = f
    if (options.matchBase && pattern.length === 1) {
      file = [filename]
    }
    var hit = this.matchOne(file, pattern, partial)
    if (hit) {
      if (options.flipNegate) return true
      return !this.negate
    }
  }

  // didn't get any hits.  this is success if it's a negative
  // pattern, failure otherwise.
  if (options.flipNegate) return false
  return this.negate
}

// set partial to true to test if, for example,
// "/a/b" matches the start of "/*/b/*/d"
// Partial means, if you run out of file before you run
// out of pattern, then that's fine, as long as all
// the parts match.
Minimatch.prototype.matchOne = function (file, pattern, partial) {
  var options = this.options

  this.debug("matchOne",
              { "this": this
              , file: file
              , pattern: pattern })

  this.debug("matchOne", file.length, pattern.length)

  for ( var fi = 0
          , pi = 0
          , fl = file.length
          , pl = pattern.length
      ; (fi < fl) && (pi < pl)
      ; fi ++, pi ++ ) {

    this.debug("matchOne loop")
    var p = pattern[pi]
      , f = file[fi]

    this.debug(pattern, p, f)

    // should be impossible.
    // some invalid regexp stuff in the set.
    if (p === false) return false

    if (p === GLOBSTAR) {
      this.debug('GLOBSTAR', [pattern, p, f])

      // "**"
      // a/**/b/**/c would match the following:
      // a/b/x/y/z/c
      // a/x/y/z/b/c
      // a/b/x/b/x/c
      // a/b/c
      // To do this, take the rest of the pattern after
      // the **, and see if it would match the file remainder.
      // If so, return success.
      // If not, the ** "swallows" a segment, and try again.
      // This is recursively awful.
      //
      // a/**/b/**/c matching a/b/x/y/z/c
      // - a matches a
      // - doublestar
      //   - matchOne(b/x/y/z/c, b/**/c)
      //     - b matches b
      //     - doublestar
      //       - matchOne(x/y/z/c, c) -> no
      //       - matchOne(y/z/c, c) -> no
      //       - matchOne(z/c, c) -> no
      //       - matchOne(c, c) yes, hit
      var fr = fi
        , pr = pi + 1
      if (pr === pl) {
        this.debug('** at the end')
        // a ** at the end will just swallow the rest.
        // We have found a match.
        // however, it will not swallow /.x, unless
        // options.dot is set.
        // . and .. are *never* matched by **, for explosively
        // exponential reasons.
        for ( ; fi < fl; fi ++) {
          if (file[fi] === "." || file[fi] === ".." ||
              (!options.dot && file[fi].charAt(0) === ".")) return false
        }
        return true
      }

      // ok, let's see if we can swallow whatever we can.
      WHILE: while (fr < fl) {
        var swallowee = file[fr]

        this.debug('\nglobstar while',
                    file, fr, pattern, pr, swallowee)

        // XXX remove this slice.  Just pass the start index.
        if (this.matchOne(file.slice(fr), pattern.slice(pr), partial)) {
          this.debug('globstar found match!', fr, fl, swallowee)
          // found a match.
          return true
        } else {
          // can't swallow "." or ".." ever.
          // can only swallow ".foo" when explicitly asked.
          if (swallowee === "." || swallowee === ".." ||
              (!options.dot && swallowee.charAt(0) === ".")) {
            this.debug("dot detected!", file, fr, pattern, pr)
            break WHILE
          }

          // ** swallows a segment, and continue.
          this.debug('globstar swallow a segment, and continue')
          fr ++
        }
      }
      // no match was found.
      // However, in partial mode, we can't say this is necessarily over.
      // If there's more *pattern* left, then
      if (partial) {
        // ran out of file
        this.debug("\n>>> no match, partial?", file, fr, pattern, pr)
        if (fr === fl) return true
      }
      return false
    }

    // something other than **
    // non-magic patterns just have to match exactly
    // patterns with magic have been turned into regexps.
    var hit
    if (typeof p === "string") {
      if (options.nocase) {
        hit = f.toLowerCase() === p.toLowerCase()
      } else {
        hit = f === p
      }
      this.debug("string match", p, f, hit)
    } else {
      hit = f.match(p)
      this.debug("pattern match", p, f, hit)
    }

    if (!hit) return false
  }

  // Note: ending in / means that we'll get a final ""
  // at the end of the pattern.  This can only match a
  // corresponding "" at the end of the file.
  // If the file ends in /, then it can only match a
  // a pattern that ends in /, unless the pattern just
  // doesn't have any more for it. But, a/b/ should *not*
  // match "a/b/*", even though "" matches against the
  // [^/]*? pattern, except in partial mode, where it might
  // simply not be reached yet.
  // However, a/b/ should still satisfy a/*

  // now either we fell off the end of the pattern, or we're done.
  if (fi === fl && pi === pl) {
    // ran out of pattern and filename at the same time.
    // an exact hit!
    return true
  } else if (fi === fl) {
    // ran out of file, but still had pattern left.
    // this is ok if we're doing the match as part of
    // a glob fs traversal.
    return partial
  } else if (pi === pl) {
    // ran out of pattern, still have file left.
    // this is only acceptable if we're on the very last
    // empty segment of a file with a trailing slash.
    // a/* should match a/b/
    var emptyFileEnd = (fi === fl - 1) && (file[fi] === "")
    return emptyFileEnd
  }

  // should be unreachable.
  throw new Error("wtf?")
}


// replace stuff like \* with *
function globUnescape (s) {
  return s.replace(/\\(.)/g, "$1")
}


function regExpEscape (s) {
  return s.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, "\\$&")
}

}).call(this,require('_process'))
},{"_process":200,"brace-expansion":431}],431:[function(require,module,exports){
var concatMap = require('concat-map');
var balanced = require('balanced-match');

module.exports = expandTop;

var escSlash = '\0SLASH'+Math.random()+'\0';
var escOpen = '\0OPEN'+Math.random()+'\0';
var escClose = '\0CLOSE'+Math.random()+'\0';
var escComma = '\0COMMA'+Math.random()+'\0';
var escPeriod = '\0PERIOD'+Math.random()+'\0';

function numeric(str) {
  return parseInt(str, 10) == str
    ? parseInt(str, 10)
    : str.charCodeAt(0);
}

function escapeBraces(str) {
  return str.split('\\\\').join(escSlash)
            .split('\\{').join(escOpen)
            .split('\\}').join(escClose)
            .split('\\,').join(escComma)
            .split('\\.').join(escPeriod);
}

function unescapeBraces(str) {
  return str.split(escSlash).join('\\')
            .split(escOpen).join('{')
            .split(escClose).join('}')
            .split(escComma).join(',')
            .split(escPeriod).join('.');
}


// Basically just str.split(","), but handling cases
// where we have nested braced sections, which should be
// treated as individual members, like {a,{b,c},d}
function parseCommaParts(str) {
  if (!str)
    return [''];

  var parts = [];
  var m = balanced('{', '}', str);

  if (!m)
    return str.split(',');

  var pre = m.pre;
  var body = m.body;
  var post = m.post;
  var p = pre.split(',');

  p[p.length-1] += '{' + body + '}';
  var postParts = parseCommaParts(post);
  if (post.length) {
    p[p.length-1] += postParts.shift();
    p.push.apply(p, postParts);
  }

  parts.push.apply(parts, p);

  return parts;
}

function expandTop(str) {
  if (!str)
    return [];

  return expand(escapeBraces(str), true).map(unescapeBraces);
}

function identity(e) {
  return e;
}

function embrace(str) {
  return '{' + str + '}';
}
function isPadded(el) {
  return /^-?0\d/.test(el);
}

function lte(i, y) {
  return i <= y;
}
function gte(i, y) {
  return i >= y;
}

function expand(str, isTop) {
  var expansions = [];

  var m = balanced('{', '}', str);
  if (!m || /\$$/.test(m.pre)) return [str];

  var isNumericSequence = /^-?\d+\.\.-?\d+(?:\.\.-?\d+)?$/.test(m.body);
  var isAlphaSequence = /^[a-zA-Z]\.\.[a-zA-Z](?:\.\.-?\d+)?$/.test(m.body);
  var isSequence = isNumericSequence || isAlphaSequence;
  var isOptions = /^(.*,)+(.+)?$/.test(m.body);
  if (!isSequence && !isOptions) {
    // {a},b}
    if (m.post.match(/,.*}/)) {
      str = m.pre + '{' + m.body + escClose + m.post;
      return expand(str);
    }
    return [str];
  }

  var n;
  if (isSequence) {
    n = m.body.split(/\.\./);
  } else {
    n = parseCommaParts(m.body);
    if (n.length === 1) {
      // x{{a,b}}y ==> x{a}y x{b}y
      n = expand(n[0], false).map(embrace);
      if (n.length === 1) {
        var post = m.post.length
          ? expand(m.post, false)
          : [''];
        return post.map(function(p) {
          return m.pre + n[0] + p;
        });
      }
    }
  }

  // at this point, n is the parts, and we know it's not a comma set
  // with a single entry.

  // no need to expand pre, since it is guaranteed to be free of brace-sets
  var pre = m.pre;
  var post = m.post.length
    ? expand(m.post, false)
    : [''];

  var N;

  if (isSequence) {
    var x = numeric(n[0]);
    var y = numeric(n[1]);
    var width = Math.max(n[0].length, n[1].length)
    var incr = n.length == 3
      ? Math.abs(numeric(n[2]))
      : 1;
    var test = lte;
    var reverse = y < x;
    if (reverse) {
      incr *= -1;
      test = gte;
    }
    var pad = n.some(isPadded);

    N = [];

    for (var i = x; test(i, y); i += incr) {
      var c;
      if (isAlphaSequence) {
        c = String.fromCharCode(i);
        if (c === '\\')
          c = '';
      } else {
        c = String(i);
        if (pad) {
          var need = width - c.length;
          if (need > 0) {
            var z = new Array(need + 1).join('0');
            if (i < 0)
              c = '-' + z + c.slice(1);
            else
              c = z + c;
          }
        }
      }
      N.push(c);
    }
  } else {
    N = concatMap(n, function(el) { return expand(el, false) });
  }

  for (var j = 0; j < N.length; j++) {
    for (var k = 0; k < post.length; k++) {
      var expansion = pre + N[j] + post[k];
      if (!isTop || isSequence || expansion)
        expansions.push(expansion);
    }
  }

  return expansions;
}


},{"balanced-match":432,"concat-map":433}],432:[function(require,module,exports){
module.exports = balanced;
function balanced(a, b, str) {
  var bal = 0;
  var m = {};
  var ended = false;

  for (var i = 0; i < str.length; i++) {
    if (a == str.substr(i, a.length)) {
      if (!('start' in m)) m.start = i;
      bal++;
    }
    else if (b == str.substr(i, b.length) && 'start' in m) {
      ended = true;
      bal--;
      if (!bal) {
        m.end = i;
        m.pre = str.substr(0, m.start);
        m.body = (m.end - m.start > 1)
          ? str.substring(m.start + a.length, m.end)
          : '';
        m.post = str.slice(m.end + b.length);
        return m;
      }
    }
  }

  // if we opened more than we closed, find the one we closed
  if (bal && ended) {
    var start = m.start + a.length;
    m = balanced(a, b, str.substr(start));
    if (m) {
      m.start += start;
      m.end += start;
      m.pre = str.slice(0, start) + m.pre;
    }
    return m;
  }
}

},{}],433:[function(require,module,exports){
module.exports = function (xs, fn) {
    var res = [];
    for (var i = 0; i < xs.length; i++) {
        var x = fn(xs[i], i);
        if (isArray(x)) res.push.apply(res, x);
        else res.push(x);
    }
    return res;
};

var isArray = Array.isArray || function (xs) {
    return Object.prototype.toString.call(xs) === '[object Array]';
};

},{}],434:[function(require,module,exports){
(function (process){
'use strict';

function posix(path) {
	return path.charAt(0) === '/';
};

function win32(path) {
	// https://github.com/joyent/node/blob/b3fcc245fb25539909ef1d5eaa01dbf92e168633/lib/path.js#L56
	var splitDeviceRe = /^([a-zA-Z]:|[\\\/]{2}[^\\\/]+[\\\/]+[^\\\/]+)?([\\\/])?([\s\S]*?)$/;
	var result = splitDeviceRe.exec(path);
	var device = result[1] || '';
	var isUnc = !!device && device.charAt(1) !== ':';

	// UNC paths are always absolute
	return !!result[2] || isUnc;
};

module.exports = process.platform === 'win32' ? win32 : posix;
module.exports.posix = posix;
module.exports.win32 = win32;

}).call(this,require('_process'))
},{"_process":200}],435:[function(require,module,exports){
"use strict";

var originalObject = Object;
var originalDefProp = Object.defineProperty;
var originalCreate = Object.create;

function defProp(obj, name, value) {
  if (originalDefProp) try {
    originalDefProp.call(originalObject, obj, name, { value: value });
  } catch (definePropertyIsBrokenInIE8) {
    obj[name] = value;
  } else {
    obj[name] = value;
  }
}

// For functions that will be invoked using .call or .apply, we need to
// define those methods on the function objects themselves, rather than
// inheriting them from Function.prototype, so that a malicious or clumsy
// third party cannot interfere with the functionality of this module by
// redefining Function.prototype.call or .apply.
function makeSafeToCall(fun) {
  if (fun) {
    defProp(fun, "call", fun.call);
    defProp(fun, "apply", fun.apply);
  }
  return fun;
}

makeSafeToCall(originalDefProp);
makeSafeToCall(originalCreate);

var hasOwn = makeSafeToCall(Object.prototype.hasOwnProperty);
var numToStr = makeSafeToCall(Number.prototype.toString);
var strSlice = makeSafeToCall(String.prototype.slice);

var cloner = function(){};
function create(prototype) {
  if (originalCreate) {
    return originalCreate.call(originalObject, prototype);
  }
  cloner.prototype = prototype || null;
  return new cloner;
}

var rand = Math.random;
var uniqueKeys = create(null);

function makeUniqueKey() {
  // Collisions are highly unlikely, but this module is in the business of
  // making guarantees rather than safe bets.
  do var uniqueKey = internString(strSlice.call(numToStr.call(rand(), 36), 2));
  while (hasOwn.call(uniqueKeys, uniqueKey));
  return uniqueKeys[uniqueKey] = uniqueKey;
}

function internString(str) {
  var obj = {};
  obj[str] = true;
  return Object.keys(obj)[0];
}

// External users might find this function useful, but it is not necessary
// for the typical use of this module.
defProp(exports, "makeUniqueKey", makeUniqueKey);

// Object.getOwnPropertyNames is the only way to enumerate non-enumerable
// properties, so if we wrap it to ignore our secret keys, there should be
// no way (except guessing) to access those properties.
var originalGetOPNs = Object.getOwnPropertyNames;
Object.getOwnPropertyNames = function getOwnPropertyNames(object) {
  for (var names = originalGetOPNs(object),
           src = 0,
           dst = 0,
           len = names.length;
       src < len;
       ++src) {
    if (!hasOwn.call(uniqueKeys, names[src])) {
      if (src > dst) {
        names[dst] = names[src];
      }
      ++dst;
    }
  }
  names.length = dst;
  return names;
};

function defaultCreatorFn(object) {
  return create(null);
}

function makeAccessor(secretCreatorFn) {
  var brand = makeUniqueKey();
  var passkey = create(null);

  secretCreatorFn = secretCreatorFn || defaultCreatorFn;

  function register(object) {
    var secret; // Created lazily.

    function vault(key, forget) {
      // Only code that has access to the passkey can retrieve (or forget)
      // the secret object.
      if (key === passkey) {
        return forget
          ? secret = null
          : secret || (secret = secretCreatorFn(object));
      }
    }

    defProp(object, brand, vault);
  }

  function accessor(object) {
    if (!hasOwn.call(object, brand))
      register(object);
    return object[brand](passkey);
  }

  accessor.forget = function(object) {
    if (hasOwn.call(object, brand))
      object[brand](passkey, true);
  };

  return accessor;
}

defProp(exports, "makeAccessor", makeAccessor);

},{}],436:[function(require,module,exports){
/**
 * Copyright (c) 2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * https://raw.github.com/facebook/regenerator/master/LICENSE file. An
 * additional grant of patent rights can be found in the PATENTS file in
 * the same directory.
 */

var assert = require("assert");
var types = require("recast").types;
var isArray = types.builtInTypes.array;
var b = types.builders;
var n = types.namedTypes;
var leap = require("./leap");
var meta = require("./meta");
var util = require("./util");
var runtimeProperty = util.runtimeProperty;
var hasOwn = Object.prototype.hasOwnProperty;

function Emitter(contextId) {
  assert.ok(this instanceof Emitter);
  n.Identifier.assert(contextId);

  Object.defineProperties(this, {
    // In order to make sure the context object does not collide with
    // anything in the local scope, we might have to rename it, so we
    // refer to it symbolically instead of just assuming that it will be
    // called "context".
    contextId: { value: contextId },

    // An append-only list of Statements that grows each time this.emit is
    // called.
    listing: { value: [] },

    // A sparse array whose keys correspond to locations in this.listing
    // that have been marked as branch/jump targets.
    marked: { value: [true] },

    // The last location will be marked when this.getDispatchLoop is
    // called.
    finalLoc: { value: loc() },

    // A list of all leap.TryEntry statements emitted.
    tryEntries: { value: [] }
  });

  // The .leapManager property needs to be defined by a separate
  // defineProperties call so that .finalLoc will be visible to the
  // leap.LeapManager constructor.
  Object.defineProperties(this, {
    // Each time we evaluate the body of a loop, we tell this.leapManager
    // to enter a nested loop context that determines the meaning of break
    // and continue statements therein.
    leapManager: { value: new leap.LeapManager(this) }
  });
}

var Ep = Emitter.prototype;
exports.Emitter = Emitter;

// Offsets into this.listing that could be used as targets for branches or
// jumps are represented as numeric Literal nodes. This representation has
// the amazingly convenient benefit of allowing the exact value of the
// location to be determined at any time, even after generating code that
// refers to the location.
function loc() {
  return b.literal(-1);
}

// Sets the exact value of the given location to the offset of the next
// Statement emitted.
Ep.mark = function(loc) {
  n.Literal.assert(loc);
  var index = this.listing.length;
  if (loc.value === -1) {
    loc.value = index;
  } else {
    // Locations can be marked redundantly, but their values cannot change
    // once set the first time.
    assert.strictEqual(loc.value, index);
  }
  this.marked[index] = true;
  return loc;
};

Ep.emit = function(node) {
  if (n.Expression.check(node))
    node = b.expressionStatement(node);
  n.Statement.assert(node);
  this.listing.push(node);
};

// Shorthand for emitting assignment statements. This will come in handy
// for assignments to temporary variables.
Ep.emitAssign = function(lhs, rhs) {
  this.emit(this.assign(lhs, rhs));
  return lhs;
};

// Shorthand for an assignment statement.
Ep.assign = function(lhs, rhs) {
  return b.expressionStatement(
    b.assignmentExpression("=", lhs, rhs));
};

// Convenience function for generating expressions like context.next,
// context.sent, and context.rval.
Ep.contextProperty = function(name, computed) {
  return b.memberExpression(
    this.contextId,
    computed ? b.literal(name) : b.identifier(name),
    !!computed
  );
};

var volatileContextPropertyNames = {
  prev: true,
  next: true,
  sent: true,
  rval: true
};

// A "volatile" context property is a MemberExpression like context.sent
// that should probably be stored in a temporary variable when there's a
// possibility the property will get overwritten.
Ep.isVolatileContextProperty = function(expr) {
  if (n.MemberExpression.check(expr)) {
    if (expr.computed) {
      // If it's a computed property such as context[couldBeAnything],
      // assume the worst in terms of volatility.
      return true;
    }

    if (n.Identifier.check(expr.object) &&
        n.Identifier.check(expr.property) &&
        expr.object.name === this.contextId.name &&
        hasOwn.call(volatileContextPropertyNames,
                    expr.property.name)) {
      return true;
    }
  }

  return false;
};

// Shorthand for setting context.rval and jumping to `context.stop()`.
Ep.stop = function(rval) {
  if (rval) {
    this.setReturnValue(rval);
  }

  this.jump(this.finalLoc);
};

Ep.setReturnValue = function(valuePath) {
  n.Expression.assert(valuePath.value);

  this.emitAssign(
    this.contextProperty("rval"),
    this.explodeExpression(valuePath)
  );
};

Ep.clearPendingException = function(tryLoc, assignee) {
  n.Literal.assert(tryLoc);

  var catchCall = b.callExpression(
    this.contextProperty("catch", true),
    [tryLoc]
  );

  if (assignee) {
    this.emitAssign(assignee, catchCall);
  } else {
    this.emit(catchCall);
  }
};

// Emits code for an unconditional jump to the given location, even if the
// exact value of the location is not yet known.
Ep.jump = function(toLoc) {
  this.emitAssign(this.contextProperty("next"), toLoc);
  this.emit(b.breakStatement());
};

// Conditional jump.
Ep.jumpIf = function(test, toLoc) {
  n.Expression.assert(test);
  n.Literal.assert(toLoc);

  this.emit(b.ifStatement(
    test,
    b.blockStatement([
      this.assign(this.contextProperty("next"), toLoc),
      b.breakStatement()
    ])
  ));
};

// Conditional jump, with the condition negated.
Ep.jumpIfNot = function(test, toLoc) {
  n.Expression.assert(test);
  n.Literal.assert(toLoc);

  var negatedTest;
  if (n.UnaryExpression.check(test) &&
      test.operator === "!") {
    // Avoid double negation.
    negatedTest = test.argument;
  } else {
    negatedTest = b.unaryExpression("!", test);
  }

  this.emit(b.ifStatement(
    negatedTest,
    b.blockStatement([
      this.assign(this.contextProperty("next"), toLoc),
      b.breakStatement()
    ])
  ));
};

// Returns a unique MemberExpression that can be used to store and
// retrieve temporary values. Since the object of the member expression is
// the context object, which is presumed to coexist peacefully with all
// other local variables, and since we just increment `nextTempId`
// monotonically, uniqueness is assured.
var nextTempId = 0;
Ep.makeTempVar = function() {
  return this.contextProperty("t" + nextTempId++);
};

Ep.getContextFunction = function(id) {
  return b.functionExpression(
    id || null/*Anonymous*/,
    [this.contextId],
    b.blockStatement([this.getDispatchLoop()]),
    false, // Not a generator anymore!
    false // Nor an expression.
  );
};

// Turns this.listing into a loop of the form
//
//   while (1) switch (context.next) {
//   case 0:
//   ...
//   case n:
//     return context.stop();
//   }
//
// Each marked location in this.listing will correspond to one generated
// case statement.
Ep.getDispatchLoop = function() {
  var self = this;
  var cases = [];
  var current;

  // If we encounter a break, continue, or return statement in a switch
  // case, we can skip the rest of the statements until the next case.
  var alreadyEnded = false;

  self.listing.forEach(function(stmt, i) {
    if (self.marked.hasOwnProperty(i)) {
      cases.push(b.switchCase(
        b.literal(i),
        current = []));
      alreadyEnded = false;
    }

    if (!alreadyEnded) {
      current.push(stmt);
      if (isSwitchCaseEnder(stmt))
        alreadyEnded = true;
    }
  });

  // Now that we know how many statements there will be in this.listing,
  // we can finally resolve this.finalLoc.value.
  this.finalLoc.value = this.listing.length;

  cases.push(
    b.switchCase(this.finalLoc, [
      // Intentionally fall through to the "end" case...
    ]),

    // So that the runtime can jump to the final location without having
    // to know its offset, we provide the "end" case as a synonym.
    b.switchCase(b.literal("end"), [
      // This will check/clear both context.thrown and context.rval.
      b.returnStatement(
        b.callExpression(this.contextProperty("stop"), [])
      )
    ])
  );

  return b.whileStatement(
    b.literal(1),
    b.switchStatement(
      b.assignmentExpression(
        "=",
        this.contextProperty("prev"),
        this.contextProperty("next")
      ),
      cases
    )
  );
};

// See comment above re: alreadyEnded.
function isSwitchCaseEnder(stmt) {
  return n.BreakStatement.check(stmt)
      || n.ContinueStatement.check(stmt)
      || n.ReturnStatement.check(stmt)
      || n.ThrowStatement.check(stmt);
}

Ep.getTryLocsList = function() {
  if (this.tryEntries.length === 0) {
    // To avoid adding a needless [] to the majority of runtime.wrap
    // argument lists, force the caller to handle this case specially.
    return null;
  }

  var lastLocValue = 0;

  return b.arrayExpression(
    this.tryEntries.map(function(tryEntry) {
      var thisLocValue = tryEntry.firstLoc.value;
      assert.ok(thisLocValue >= lastLocValue, "try entries out of order");
      lastLocValue = thisLocValue;

      var ce = tryEntry.catchEntry;
      var fe = tryEntry.finallyEntry;

      var locs = [
        tryEntry.firstLoc,
        // The null here makes a hole in the array.
        ce ? ce.firstLoc : null
      ];

      if (fe) {
        locs[2] = fe.firstLoc;
        locs[3] = fe.afterLoc;
      }

      return b.arrayExpression(locs);
    })
  );
};

// All side effects must be realized in order.

// If any subexpression harbors a leap, all subexpressions must be
// neutered of side effects.

// No destructive modification of AST nodes.

Ep.explode = function(path, ignoreResult) {
  assert.ok(path instanceof types.NodePath);

  var node = path.value;
  var self = this;

  n.Node.assert(node);

  if (n.Statement.check(node))
    return self.explodeStatement(path);

  if (n.Expression.check(node))
    return self.explodeExpression(path, ignoreResult);

  if (n.Declaration.check(node))
    throw getDeclError(node);

  switch (node.type) {
  case "Program":
    return path.get("body").map(
      self.explodeStatement,
      self
    );

  case "VariableDeclarator":
    throw getDeclError(node);

  // These node types should be handled by their parent nodes
  // (ObjectExpression, SwitchStatement, and TryStatement, respectively).
  case "Property":
  case "SwitchCase":
  case "CatchClause":
    throw new Error(
      node.type + " nodes should be handled by their parents");

  default:
    throw new Error(
      "unknown Node of type " +
        JSON.stringify(node.type));
  }
};

function getDeclError(node) {
  return new Error(
    "all declarations should have been transformed into " +
    "assignments before the Exploder began its work: " +
    JSON.stringify(node));
}

Ep.explodeStatement = function(path, labelId) {
  assert.ok(path instanceof types.NodePath);

  var stmt = path.value;
  var self = this;

  n.Statement.assert(stmt);

  if (labelId) {
    n.Identifier.assert(labelId);
  } else {
    labelId = null;
  }

  // Explode BlockStatement nodes even if they do not contain a yield,
  // because we don't want or need the curly braces.
  if (n.BlockStatement.check(stmt)) {
    return path.get("body").each(
      self.explodeStatement,
      self
    );
  }

  if (!meta.containsLeap(stmt)) {
    // Technically we should be able to avoid emitting the statement
    // altogether if !meta.hasSideEffects(stmt), but that leads to
    // confusing generated code (for instance, `while (true) {}` just
    // disappears) and is probably a more appropriate job for a dedicated
    // dead code elimination pass.
    self.emit(stmt);
    return;
  }

  switch (stmt.type) {
  case "ExpressionStatement":
    self.explodeExpression(path.get("expression"), true);
    break;

  case "LabeledStatement":
    var after = loc();

    // Did you know you can break from any labeled block statement or
    // control structure? Well, you can! Note: when a labeled loop is
    // encountered, the leap.LabeledEntry created here will immediately
    // enclose a leap.LoopEntry on the leap manager's stack, and both
    // entries will have the same label. Though this works just fine, it
    // may seem a bit redundant. In theory, we could check here to
    // determine if stmt knows how to handle its own label; for example,
    // stmt happens to be a WhileStatement and so we know it's going to
    // establish its own LoopEntry when we explode it (below). Then this
    // LabeledEntry would be unnecessary. Alternatively, we might be
    // tempted not to pass stmt.label down into self.explodeStatement,
    // because we've handled the label here, but that's a mistake because
    // labeled loops may contain labeled continue statements, which is not
    // something we can handle in this generic case. All in all, I think a
    // little redundancy greatly simplifies the logic of this case, since
    // it's clear that we handle all possible LabeledStatements correctly
    // here, regardless of whether they interact with the leap manager
    // themselves. Also remember that labels and break/continue-to-label
    // statements are rare, and all of this logic happens at transform
    // time, so it has no additional runtime cost.
    self.leapManager.withEntry(
      new leap.LabeledEntry(after, stmt.label),
      function() {
        self.explodeStatement(path.get("body"), stmt.label);
      }
    );

    self.mark(after);

    break;

  case "WhileStatement":
    var before = loc();
    var after = loc();

    self.mark(before);
    self.jumpIfNot(self.explodeExpression(path.get("test")), after);
    self.leapManager.withEntry(
      new leap.LoopEntry(after, before, labelId),
      function() { self.explodeStatement(path.get("body")); }
    );
    self.jump(before);
    self.mark(after);

    break;

  case "DoWhileStatement":
    var first = loc();
    var test = loc();
    var after = loc();

    self.mark(first);
    self.leapManager.withEntry(
      new leap.LoopEntry(after, test, labelId),
      function() { self.explode(path.get("body")); }
    );
    self.mark(test);
    self.jumpIf(self.explodeExpression(path.get("test")), first);
    self.mark(after);

    break;

  case "ForStatement":
    var head = loc();
    var update = loc();
    var after = loc();

    if (stmt.init) {
      // We pass true here to indicate that if stmt.init is an expression
      // then we do not care about its result.
      self.explode(path.get("init"), true);
    }

    self.mark(head);

    if (stmt.test) {
      self.jumpIfNot(self.explodeExpression(path.get("test")), after);
    } else {
      // No test means continue unconditionally.
    }

    self.leapManager.withEntry(
      new leap.LoopEntry(after, update, labelId),
      function() { self.explodeStatement(path.get("body")); }
    );

    self.mark(update);

    if (stmt.update) {
      // We pass true here to indicate that if stmt.update is an
      // expression then we do not care about its result.
      self.explode(path.get("update"), true);
    }

    self.jump(head);

    self.mark(after);

    break;

  case "ForInStatement":
    n.Identifier.assert(stmt.left);

    var head = loc();
    var after = loc();

    var keyIterNextFn = self.makeTempVar();
    self.emitAssign(
      keyIterNextFn,
      b.callExpression(
        runtimeProperty("keys"),
        [self.explodeExpression(path.get("right"))]
      )
    );

    self.mark(head);

    var keyInfoTmpVar = self.makeTempVar();
    self.jumpIf(
      b.memberExpression(
        b.assignmentExpression(
          "=",
          keyInfoTmpVar,
          b.callExpression(keyIterNextFn, [])
        ),
        b.identifier("done"),
        false
      ),
      after
    );

    self.emitAssign(
      stmt.left,
      b.memberExpression(
        keyInfoTmpVar,
        b.identifier("value"),
        false
      )
    );

    self.leapManager.withEntry(
      new leap.LoopEntry(after, head, labelId),
      function() { self.explodeStatement(path.get("body")); }
    );

    self.jump(head);

    self.mark(after);

    break;

  case "BreakStatement":
    self.emitAbruptCompletion({
      type: "break",
      target: self.leapManager.getBreakLoc(stmt.label)
    });

    break;

  case "ContinueStatement":
    self.emitAbruptCompletion({
      type: "continue",
      target: self.leapManager.getContinueLoc(stmt.label)
    });

    break;

  case "SwitchStatement":
    // Always save the discriminant into a temporary variable in case the
    // test expressions overwrite values like context.sent.
    var disc = self.emitAssign(
      self.makeTempVar(),
      self.explodeExpression(path.get("discriminant"))
    );

    var after = loc();
    var defaultLoc = loc();
    var condition = defaultLoc;
    var caseLocs = [];

    // If there are no cases, .cases might be undefined.
    var cases = stmt.cases || [];

    for (var i = cases.length - 1; i >= 0; --i) {
      var c = cases[i];
      n.SwitchCase.assert(c);

      if (c.test) {
        condition = b.conditionalExpression(
          b.binaryExpression("===", disc, c.test),
          caseLocs[i] = loc(),
          condition
        );
      } else {
        caseLocs[i] = defaultLoc;
      }
    }

    self.jump(self.explodeExpression(
      new types.NodePath(condition, path, "discriminant")
    ));

    self.leapManager.withEntry(
      new leap.SwitchEntry(after),
      function() {
        path.get("cases").each(function(casePath) {
          var c = casePath.value;
          var i = casePath.name;

          self.mark(caseLocs[i]);

          casePath.get("consequent").each(
            self.explodeStatement,
            self
          );
        });
      }
    );

    self.mark(after);
    if (defaultLoc.value === -1) {
      self.mark(defaultLoc);
      assert.strictEqual(after.value, defaultLoc.value);
    }

    break;

  case "IfStatement":
    var elseLoc = stmt.alternate && loc();
    var after = loc();

    self.jumpIfNot(
      self.explodeExpression(path.get("test")),
      elseLoc || after
    );

    self.explodeStatement(path.get("consequent"));

    if (elseLoc) {
      self.jump(after);
      self.mark(elseLoc);
      self.explodeStatement(path.get("alternate"));
    }

    self.mark(after);

    break;

  case "ReturnStatement":
    self.emitAbruptCompletion({
      type: "return",
      value: self.explodeExpression(path.get("argument"))
    });

    break;

  case "WithStatement":
    throw new Error(
      node.type + " not supported in generator functions.");

  case "TryStatement":
    var after = loc();

    var handler = stmt.handler;
    if (!handler && stmt.handlers) {
      handler = stmt.handlers[0] || null;
    }

    var catchLoc = handler && loc();
    var catchEntry = catchLoc && new leap.CatchEntry(
      catchLoc,
      handler.param
    );

    var finallyLoc = stmt.finalizer && loc();
    var finallyEntry = finallyLoc &&
      new leap.FinallyEntry(finallyLoc, after);

    var tryEntry = new leap.TryEntry(
      self.getUnmarkedCurrentLoc(),
      catchEntry,
      finallyEntry
    );

    self.tryEntries.push(tryEntry);
    self.updateContextPrevLoc(tryEntry.firstLoc);

    self.leapManager.withEntry(tryEntry, function() {
      self.explodeStatement(path.get("block"));

      if (catchLoc) {
        if (finallyLoc) {
          // If we have both a catch block and a finally block, then
          // because we emit the catch block first, we need to jump over
          // it to the finally block.
          self.jump(finallyLoc);

        } else {
          // If there is no finally block, then we need to jump over the
          // catch block to the fall-through location.
          self.jump(after);
        }

        self.updateContextPrevLoc(self.mark(catchLoc));

        var bodyPath = path.get("handler", "body");
        var safeParam = self.makeTempVar();
        self.clearPendingException(tryEntry.firstLoc, safeParam);

        var catchScope = bodyPath.scope;
        var catchParamName = handler.param.name;
        n.CatchClause.assert(catchScope.node);
        assert.strictEqual(catchScope.lookup(catchParamName), catchScope);

        types.visit(bodyPath, {
          visitIdentifier: function(path) {
            if (util.isReference(path, catchParamName) &&
                path.scope.lookup(catchParamName) === catchScope) {
              return safeParam;
            }

            this.traverse(path);
          },

          visitFunction: function(path) {
            if (path.scope.declares(catchParamName)) {
              // Don't descend into nested scopes that shadow the catch
              // parameter with their own declarations. This isn't
              // logically necessary because of the path.scope.lookup we
              // do in visitIdentifier, but it saves time.
              return false;
            }

            this.traverse(path);
          }
        });

        self.leapManager.withEntry(catchEntry, function() {
          self.explodeStatement(bodyPath);
        });
      }

      if (finallyLoc) {
        self.updateContextPrevLoc(self.mark(finallyLoc));

        self.leapManager.withEntry(finallyEntry, function() {
          self.explodeStatement(path.get("finalizer"));
        });

        self.emit(b.returnStatement(b.callExpression(
          self.contextProperty("finish"),
          [finallyEntry.firstLoc]
        )));
      }
    });

    self.mark(after);

    break;

  case "ThrowStatement":
    self.emit(b.throwStatement(
      self.explodeExpression(path.get("argument"))
    ));

    break;

  default:
    throw new Error(
      "unknown Statement of type " +
        JSON.stringify(stmt.type));
  }
};

Ep.emitAbruptCompletion = function(record) {
  if (!isValidCompletion(record)) {
    assert.ok(
      false,
      "invalid completion record: " +
        JSON.stringify(record)
    );
  }

  assert.notStrictEqual(
    record.type, "normal",
    "normal completions are not abrupt"
  );

  var abruptArgs = [b.literal(record.type)];

  if (record.type === "break" ||
      record.type === "continue") {
    n.Literal.assert(record.target);
    abruptArgs[1] = record.target;
  } else if (record.type === "return" ||
             record.type === "throw") {
    if (record.value) {
      n.Expression.assert(record.value);
      abruptArgs[1] = record.value;
    }
  }

  this.emit(
    b.returnStatement(
      b.callExpression(
        this.contextProperty("abrupt"),
        abruptArgs
      )
    )
  );
};

function isValidCompletion(record) {
  var type = record.type;

  if (type === "normal") {
    return !hasOwn.call(record, "target");
  }

  if (type === "break" ||
      type === "continue") {
    return !hasOwn.call(record, "value")
        && n.Literal.check(record.target);
  }

  if (type === "return" ||
      type === "throw") {
    return hasOwn.call(record, "value")
        && !hasOwn.call(record, "target");
  }

  return false;
}


// Not all offsets into emitter.listing are potential jump targets. For
// example, execution typically falls into the beginning of a try block
// without jumping directly there. This method returns the current offset
// without marking it, so that a switch case will not necessarily be
// generated for this offset (I say "not necessarily" because the same
// location might end up being marked in the process of emitting other
// statements). There's no logical harm in marking such locations as jump
// targets, but minimizing the number of switch cases keeps the generated
// code shorter.
Ep.getUnmarkedCurrentLoc = function() {
  return b.literal(this.listing.length);
};

// The context.prev property takes the value of context.next whenever we
// evaluate the switch statement discriminant, which is generally good
// enough for tracking the last location we jumped to, but sometimes
// context.prev needs to be more precise, such as when we fall
// successfully out of a try block and into a finally block without
// jumping. This method exists to update context.prev to the freshest
// available location. If we were implementing a full interpreter, we
// would know the location of the current instruction with complete
// precision at all times, but we don't have that luxury here, as it would
// be costly and verbose to set context.prev before every statement.
Ep.updateContextPrevLoc = function(loc) {
  if (loc) {
    n.Literal.assert(loc);

    if (loc.value === -1) {
      // If an uninitialized location literal was passed in, set its value
      // to the current this.listing.length.
      loc.value = this.listing.length;
    } else {
      // Otherwise assert that the location matches the current offset.
      assert.strictEqual(loc.value, this.listing.length);
    }

  } else {
    loc = this.getUnmarkedCurrentLoc();
  }

  // Make sure context.prev is up to date in case we fell into this try
  // statement without jumping to it. TODO Consider avoiding this
  // assignment when we know control must have jumped here.
  this.emitAssign(this.contextProperty("prev"), loc);
};

Ep.explodeExpression = function(path, ignoreResult) {
  assert.ok(path instanceof types.NodePath);

  var expr = path.value;
  if (expr) {
    n.Expression.assert(expr);
  } else {
    return expr;
  }

  var self = this;
  var result; // Used optionally by several cases below.

  function finish(expr) {
    n.Expression.assert(expr);
    if (ignoreResult) {
      self.emit(expr);
    } else {
      return expr;
    }
  }

  // If the expression does not contain a leap, then we either emit the
  // expression as a standalone statement or return it whole.
  if (!meta.containsLeap(expr)) {
    return finish(expr);
  }

  // If any child contains a leap (such as a yield or labeled continue or
  // break statement), then any sibling subexpressions will almost
  // certainly have to be exploded in order to maintain the order of their
  // side effects relative to the leaping child(ren).
  var hasLeapingChildren = meta.containsLeap.onlyChildren(expr);

  // In order to save the rest of explodeExpression from a combinatorial
  // trainwreck of special cases, explodeViaTempVar is responsible for
  // deciding when a subexpression needs to be "exploded," which is my
  // very technical term for emitting the subexpression as an assignment
  // to a temporary variable and the substituting the temporary variable
  // for the original subexpression. Think of exploded view diagrams, not
  // Michael Bay movies. The point of exploding subexpressions is to
  // control the precise order in which the generated code realizes the
  // side effects of those subexpressions.
  function explodeViaTempVar(tempVar, childPath, ignoreChildResult) {
    assert.ok(childPath instanceof types.NodePath);

    assert.ok(
      !ignoreChildResult || !tempVar,
      "Ignoring the result of a child expression but forcing it to " +
        "be assigned to a temporary variable?"
    );

    var result = self.explodeExpression(childPath, ignoreChildResult);

    if (ignoreChildResult) {
      // Side effects already emitted above.

    } else if (tempVar || (hasLeapingChildren &&
                           (self.isVolatileContextProperty(result) ||
                            meta.hasSideEffects(result)))) {
      // If tempVar was provided, then the result will always be assigned
      // to it, even if the result does not otherwise need to be assigned
      // to a temporary variable.  When no tempVar is provided, we have
      // the flexibility to decide whether a temporary variable is really
      // necessary.  In general, temporary assignment is required only
      // when some other child contains a leap and the child in question
      // is a context property like $ctx.sent that might get overwritten
      // or an expression with side effects that need to occur in proper
      // sequence relative to the leap.
      result = self.emitAssign(
        tempVar || self.makeTempVar(),
        result
      );
    }
    return result;
  }

  // If ignoreResult is true, then we must take full responsibility for
  // emitting the expression with all its side effects, and we should not
  // return a result.

  switch (expr.type) {
  case "MemberExpression":
    return finish(b.memberExpression(
      self.explodeExpression(path.get("object")),
      expr.computed
        ? explodeViaTempVar(null, path.get("property"))
        : expr.property,
      expr.computed
    ));

  case "CallExpression":
    var oldCalleePath = path.get("callee");
    var newCallee = self.explodeExpression(oldCalleePath);

    // If the callee was not previously a MemberExpression, then the
    // CallExpression was "unqualified," meaning its `this` object should
    // be the global object. If the exploded expression has become a
    // MemberExpression, then we need to force it to be unqualified by
    // using the (0, object.property)(...) trick; otherwise, it will
    // receive the object of the MemberExpression as its `this` object.
    if (!n.MemberExpression.check(oldCalleePath.node) &&
        n.MemberExpression.check(newCallee)) {
      newCallee = b.sequenceExpression([
        b.literal(0),
        newCallee
      ]);
    }

    return finish(b.callExpression(
      newCallee,
      path.get("arguments").map(function(argPath) {
        return explodeViaTempVar(null, argPath);
      })
    ));

  case "NewExpression":
    return finish(b.newExpression(
      explodeViaTempVar(null, path.get("callee")),
      path.get("arguments").map(function(argPath) {
        return explodeViaTempVar(null, argPath);
      })
    ));

  case "ObjectExpression":
    return finish(b.objectExpression(
      path.get("properties").map(function(propPath) {
        return b.property(
          propPath.value.kind,
          propPath.value.key,
          explodeViaTempVar(null, propPath.get("value"))
        );
      })
    ));

  case "ArrayExpression":
    return finish(b.arrayExpression(
      path.get("elements").map(function(elemPath) {
        return explodeViaTempVar(null, elemPath);
      })
    ));

  case "SequenceExpression":
    var lastIndex = expr.expressions.length - 1;

    path.get("expressions").each(function(exprPath) {
      if (exprPath.name === lastIndex) {
        result = self.explodeExpression(exprPath, ignoreResult);
      } else {
        self.explodeExpression(exprPath, true);
      }
    });

    return result;

  case "LogicalExpression":
    var after = loc();

    if (!ignoreResult) {
      result = self.makeTempVar();
    }

    var left = explodeViaTempVar(result, path.get("left"));

    if (expr.operator === "&&") {
      self.jumpIfNot(left, after);
    } else {
      assert.strictEqual(expr.operator, "||");
      self.jumpIf(left, after);
    }

    explodeViaTempVar(result, path.get("right"), ignoreResult);

    self.mark(after);

    return result;

  case "ConditionalExpression":
    var elseLoc = loc();
    var after = loc();
    var test = self.explodeExpression(path.get("test"));

    self.jumpIfNot(test, elseLoc);

    if (!ignoreResult) {
      result = self.makeTempVar();
    }

    explodeViaTempVar(result, path.get("consequent"), ignoreResult);
    self.jump(after);

    self.mark(elseLoc);
    explodeViaTempVar(result, path.get("alternate"), ignoreResult);

    self.mark(after);

    return result;

  case "UnaryExpression":
    return finish(b.unaryExpression(
      expr.operator,
      // Can't (and don't need to) break up the syntax of the argument.
      // Think about delete a[b].
      self.explodeExpression(path.get("argument")),
      !!expr.prefix
    ));

  case "BinaryExpression":
    return finish(b.binaryExpression(
      expr.operator,
      explodeViaTempVar(null, path.get("left")),
      explodeViaTempVar(null, path.get("right"))
    ));

  case "AssignmentExpression":
    return finish(b.assignmentExpression(
      expr.operator,
      self.explodeExpression(path.get("left")),
      self.explodeExpression(path.get("right"))
    ));

  case "UpdateExpression":
    return finish(b.updateExpression(
      expr.operator,
      self.explodeExpression(path.get("argument")),
      expr.prefix
    ));

  case "YieldExpression":
    var after = loc();
    var arg = expr.argument && self.explodeExpression(path.get("argument"));

    if (arg && expr.delegate) {
      var result = self.makeTempVar();

      self.emit(b.returnStatement(b.callExpression(
        self.contextProperty("delegateYield"), [
          arg,
          b.literal(result.property.name),
          after
        ]
      )));

      self.mark(after);

      return result;
    }

    self.emitAssign(self.contextProperty("next"), after);
    self.emit(b.returnStatement(arg || null));
    self.mark(after);

    return self.contextProperty("sent");

  default:
    throw new Error(
      "unknown Expression of type " +
        JSON.stringify(expr.type));
  }
};

},{"./leap":438,"./meta":439,"./util":440,"assert":190,"recast":469}],437:[function(require,module,exports){
/**
 * Copyright (c) 2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * https://raw.github.com/facebook/regenerator/master/LICENSE file. An
 * additional grant of patent rights can be found in the PATENTS file in
 * the same directory.
 */

var assert = require("assert");
var types = require("recast").types;
var n = types.namedTypes;
var b = types.builders;
var hasOwn = Object.prototype.hasOwnProperty;

// The hoist function takes a FunctionExpression or FunctionDeclaration
// and replaces any Declaration nodes in its body with assignments, then
// returns a VariableDeclaration containing just the names of the removed
// declarations.
exports.hoist = function(funPath) {
  assert.ok(funPath instanceof types.NodePath);
  n.Function.assert(funPath.value);

  var vars = {};

  function varDeclToExpr(vdec, includeIdentifiers) {
    n.VariableDeclaration.assert(vdec);
    var exprs = [];

    vdec.declarations.forEach(function(dec) {
      vars[dec.id.name] = dec.id;

      if (dec.init) {
        exprs.push(b.assignmentExpression(
          "=", dec.id, dec.init
        ));
      } else if (includeIdentifiers) {
        exprs.push(dec.id);
      }
    });

    if (exprs.length === 0)
      return null;

    if (exprs.length === 1)
      return exprs[0];

    return b.sequenceExpression(exprs);
  }

  types.visit(funPath.get("body"), {
    visitVariableDeclaration: function(path) {
      var expr = varDeclToExpr(path.value, false);
      if (expr === null) {
        path.replace();
      } else {
        // We don't need to traverse this expression any further because
        // there can't be any new declarations inside an expression.
        return b.expressionStatement(expr);
      }

      // Since the original node has been either removed or replaced,
      // avoid traversing it any further.
      return false;
    },

    visitForStatement: function(path) {
      var init = path.value.init;
      if (n.VariableDeclaration.check(init)) {
        path.get("init").replace(varDeclToExpr(init, false));
      }
      this.traverse(path);
    },

    visitForInStatement: function(path) {
      var left = path.value.left;
      if (n.VariableDeclaration.check(left)) {
        path.get("left").replace(varDeclToExpr(left, true));
      }
      this.traverse(path);
    },

    visitFunctionDeclaration: function(path) {
      var node = path.value;
      vars[node.id.name] = node.id;

      var parentNode = path.parent.node;
      var assignment = b.expressionStatement(
        b.assignmentExpression(
          "=",
          node.id,
          b.functionExpression(
            node.id,
            node.params,
            node.body,
            node.generator,
            node.expression
          )
        )
      );

      if (n.BlockStatement.check(path.parent.node)) {
        // Insert the assignment form before the first statement in the
        // enclosing block.
        path.parent.get("body").unshift(assignment);

        // Remove the function declaration now that we've inserted the
        // equivalent assignment form at the beginning of the block.
        path.replace();

      } else {
        // If the parent node is not a block statement, then we can just
        // replace the declaration with the equivalent assignment form
        // without worrying about hoisting it.
        path.replace(assignment);
      }

      // Don't hoist variables out of inner functions.
      return false;
    },

    visitFunctionExpression: function(path) {
      // Don't descend into nested function expressions.
      return false;
    }
  });

  var paramNames = {};
  funPath.get("params").each(function(paramPath) {
    var param = paramPath.value;
    if (n.Identifier.check(param)) {
      paramNames[param.name] = param;
    } else {
      // Variables declared by destructuring parameter patterns will be
      // harmlessly re-declared.
    }
  });

  var declarations = [];

  Object.keys(vars).forEach(function(name) {
    if (!hasOwn.call(paramNames, name)) {
      declarations.push(b.variableDeclarator(vars[name], null));
    }
  });

  if (declarations.length === 0) {
    return null; // Be sure to handle this case!
  }

  return b.variableDeclaration("var", declarations);
};

},{"assert":190,"recast":469}],438:[function(require,module,exports){
/**
 * Copyright (c) 2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * https://raw.github.com/facebook/regenerator/master/LICENSE file. An
 * additional grant of patent rights can be found in the PATENTS file in
 * the same directory.
 */

var assert = require("assert");
var types = require("recast").types;
var n = types.namedTypes;
var b = types.builders;
var inherits = require("util").inherits;
var hasOwn = Object.prototype.hasOwnProperty;

function Entry() {
  assert.ok(this instanceof Entry);
}

function FunctionEntry(returnLoc) {
  Entry.call(this);
  n.Literal.assert(returnLoc);
  this.returnLoc = returnLoc;
}

inherits(FunctionEntry, Entry);
exports.FunctionEntry = FunctionEntry;

function LoopEntry(breakLoc, continueLoc, label) {
  Entry.call(this);

  n.Literal.assert(breakLoc);
  n.Literal.assert(continueLoc);

  if (label) {
    n.Identifier.assert(label);
  } else {
    label = null;
  }

  this.breakLoc = breakLoc;
  this.continueLoc = continueLoc;
  this.label = label;
}

inherits(LoopEntry, Entry);
exports.LoopEntry = LoopEntry;

function SwitchEntry(breakLoc) {
  Entry.call(this);
  n.Literal.assert(breakLoc);
  this.breakLoc = breakLoc;
}

inherits(SwitchEntry, Entry);
exports.SwitchEntry = SwitchEntry;

function TryEntry(firstLoc, catchEntry, finallyEntry) {
  Entry.call(this);

  n.Literal.assert(firstLoc);

  if (catchEntry) {
    assert.ok(catchEntry instanceof CatchEntry);
  } else {
    catchEntry = null;
  }

  if (finallyEntry) {
    assert.ok(finallyEntry instanceof FinallyEntry);
  } else {
    finallyEntry = null;
  }

  // Have to have one or the other (or both).
  assert.ok(catchEntry || finallyEntry);

  this.firstLoc = firstLoc;
  this.catchEntry = catchEntry;
  this.finallyEntry = finallyEntry;
}

inherits(TryEntry, Entry);
exports.TryEntry = TryEntry;

function CatchEntry(firstLoc, paramId) {
  Entry.call(this);

  n.Literal.assert(firstLoc);
  n.Identifier.assert(paramId);

  this.firstLoc = firstLoc;
  this.paramId = paramId;
}

inherits(CatchEntry, Entry);
exports.CatchEntry = CatchEntry;

function FinallyEntry(firstLoc, afterLoc) {
  Entry.call(this);
  n.Literal.assert(firstLoc);
  n.Literal.assert(afterLoc);
  this.firstLoc = firstLoc;
  this.afterLoc = afterLoc;
}

inherits(FinallyEntry, Entry);
exports.FinallyEntry = FinallyEntry;

function LabeledEntry(breakLoc, label) {
  Entry.call(this);

  n.Literal.assert(breakLoc);
  n.Identifier.assert(label);

  this.breakLoc = breakLoc;
  this.label = label;
}

inherits(LabeledEntry, Entry);
exports.LabeledEntry = LabeledEntry;

function LeapManager(emitter) {
  assert.ok(this instanceof LeapManager);

  var Emitter = require("./emit").Emitter;
  assert.ok(emitter instanceof Emitter);

  this.emitter = emitter;
  this.entryStack = [new FunctionEntry(emitter.finalLoc)];
}

var LMp = LeapManager.prototype;
exports.LeapManager = LeapManager;

LMp.withEntry = function(entry, callback) {
  assert.ok(entry instanceof Entry);
  this.entryStack.push(entry);
  try {
    callback.call(this.emitter);
  } finally {
    var popped = this.entryStack.pop();
    assert.strictEqual(popped, entry);
  }
};

LMp._findLeapLocation = function(property, label) {
  for (var i = this.entryStack.length - 1; i >= 0; --i) {
    var entry = this.entryStack[i];
    var loc = entry[property];
    if (loc) {
      if (label) {
        if (entry.label &&
            entry.label.name === label.name) {
          return loc;
        }
      } else if (entry instanceof LabeledEntry) {
        // Ignore LabeledEntry entries unless we are actually breaking to
        // a label.
      } else {
        return loc;
      }
    }
  }

  return null;
};

LMp.getBreakLoc = function(label) {
  return this._findLeapLocation("breakLoc", label);
};

LMp.getContinueLoc = function(label) {
  return this._findLeapLocation("continueLoc", label);
};

},{"./emit":436,"assert":190,"recast":469,"util":216}],439:[function(require,module,exports){
/**
 * Copyright (c) 2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * https://raw.github.com/facebook/regenerator/master/LICENSE file. An
 * additional grant of patent rights can be found in the PATENTS file in
 * the same directory.
 */

var assert = require("assert");
var m = require("private").makeAccessor();
var types = require("recast").types;
var isArray = types.builtInTypes.array;
var n = types.namedTypes;
var hasOwn = Object.prototype.hasOwnProperty;

function makePredicate(propertyName, knownTypes) {
  function onlyChildren(node) {
    n.Node.assert(node);

    // Assume no side effects until we find out otherwise.
    var result = false;

    function check(child) {
      if (result) {
        // Do nothing.
      } else if (isArray.check(child)) {
        child.some(check);
      } else if (n.Node.check(child)) {
        assert.strictEqual(result, false);
        result = predicate(child);
      }
      return result;
    }

    types.eachField(node, function(name, child) {
      check(child);
    });

    return result;
  }

  function predicate(node) {
    n.Node.assert(node);

    var meta = m(node);
    if (hasOwn.call(meta, propertyName))
      return meta[propertyName];

    // Certain types are "opaque," which means they have no side
    // effects or leaps and we don't care about their subexpressions.
    if (hasOwn.call(opaqueTypes, node.type))
      return meta[propertyName] = false;

    if (hasOwn.call(knownTypes, node.type))
      return meta[propertyName] = true;

    return meta[propertyName] = onlyChildren(node);
  }

  predicate.onlyChildren = onlyChildren;

  return predicate;
}

var opaqueTypes = {
  FunctionExpression: true
};

// These types potentially have side effects regardless of what side
// effects their subexpressions have.
var sideEffectTypes = {
  CallExpression: true, // Anything could happen!
  ForInStatement: true, // Modifies the key variable.
  UnaryExpression: true, // Think delete.
  BinaryExpression: true, // Might invoke .toString() or .valueOf().
  AssignmentExpression: true, // Side-effecting by definition.
  UpdateExpression: true, // Updates are essentially assignments.
  NewExpression: true // Similar to CallExpression.
};

// These types are the direct cause of all leaps in control flow.
var leapTypes = {
  YieldExpression: true,
  BreakStatement: true,
  ContinueStatement: true,
  ReturnStatement: true,
  ThrowStatement: true
};

// All leap types are also side effect types.
for (var type in leapTypes) {
  if (hasOwn.call(leapTypes, type)) {
    sideEffectTypes[type] = leapTypes[type];
  }
}

exports.hasSideEffects = makePredicate("hasSideEffects", sideEffectTypes);
exports.containsLeap = makePredicate("containsLeap", leapTypes);

},{"assert":190,"private":435,"recast":469}],440:[function(require,module,exports){
/**
 * Copyright (c) 2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * https://raw.github.com/facebook/regenerator/master/LICENSE file. An
 * additional grant of patent rights can be found in the PATENTS file in
 * the same directory.
 */

var assert = require("assert");
var types = require("recast").types;
var n = types.namedTypes;
var b = types.builders;
var hasOwn = Object.prototype.hasOwnProperty;

exports.defaults = function(obj) {
  var len = arguments.length;
  var extension;

  for (var i = 1; i < len; ++i) {
    if ((extension = arguments[i])) {
      for (var key in extension) {
        if (hasOwn.call(extension, key) && !hasOwn.call(obj, key)) {
          obj[key] = extension[key];
        }
      }
    }
  }

  return obj;
};

exports.runtimeProperty = function(name) {
  return b.memberExpression(
    b.identifier("regeneratorRuntime"),
    b.identifier(name),
    false
  );
};

// Inspired by the isReference function from ast-util:
// https://github.com/eventualbuddha/ast-util/blob/9bf91c5ce8/lib/index.js#L466-L506
exports.isReference = function(path, name) {
  var node = path.value;

  if (!n.Identifier.check(node)) {
    return false;
  }

  if (name && node.name !== name) {
    return false;
  }

  var parent = path.parent.value;

  switch (parent.type) {
  case "VariableDeclarator":
    return path.name === "init";

  case "MemberExpression":
    return path.name === "object" || (
      parent.computed && path.name === "property"
    );

  case "FunctionExpression":
  case "FunctionDeclaration":
  case "ArrowFunctionExpression":
    if (path.name === "id") {
      return false;
    }

    if (parent.params === path.parentPath &&
        parent.params[path.name] === node) {
      return false;
    }

    return true;

  case "ClassDeclaration":
  case "ClassExpression":
    return path.name !== "id";

  case "CatchClause":
    return path.name !== "param";

  case "Property":
  case "MethodDefinition":
    return path.name !== "key";

  case "ImportSpecifier":
  case "ImportDefaultSpecifier":
  case "ImportNamespaceSpecifier":
  case "LabeledStatement":
    return false;

  default:
    return true;
  }
};

},{"assert":190,"recast":469}],441:[function(require,module,exports){
/**
 * Copyright (c) 2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * https://raw.github.com/facebook/regenerator/master/LICENSE file. An
 * additional grant of patent rights can be found in the PATENTS file in
 * the same directory.
 */

var assert = require("assert");
var fs = require("fs");
var recast = require("recast");
var types = recast.types;
var n = types.namedTypes;
var b = types.builders;
var isArray = types.builtInTypes.array;
var isObject = types.builtInTypes.object;
var NodePath = types.NodePath;
var hoist = require("./hoist").hoist;
var Emitter = require("./emit").Emitter;
var runtimeProperty = require("./util").runtimeProperty;
var getMarkInfo = require("private").makeAccessor();

exports.transform = function transform(node, options) {
  options = options || {};

  var path = node instanceof NodePath ? node : new NodePath(node);
  visitor.visit(path, options);
  node = path.value;

  if (options.includeRuntime === true ||
      (options.includeRuntime === 'if used' && visitor.wasChangeReported())) {
    injectRuntime(n.File.check(node) ? node.program : node);
  }

  options.madeChanges = visitor.wasChangeReported();

  return node;
};

function injectRuntime(program) {
  n.Program.assert(program);

  // Include the runtime by modifying the AST rather than by concatenating
  // strings. This technique will allow for more accurate source mapping.
  var runtimePath = require("..").runtime.path;
  var runtime = fs.readFileSync(runtimePath, "utf8");
  var runtimeBody = recast.parse(runtime, {
    sourceFileName: runtimePath
  }).program.body;

  var body = program.body;
  body.unshift.apply(body, runtimeBody);
}

var visitor = types.PathVisitor.fromMethodsObject({
  reset: function(node, options) {
    this.options = options;
  },

  visitFunction: function(path) {
    // Calling this.traverse(path) first makes for a post-order traversal.
    this.traverse(path);

    var node = path.value;
    var shouldTransformAsync = node.async && !this.options.disableAsync;

    if (!node.generator && !shouldTransformAsync) {
      return;
    }

    this.reportChanged();

    node.generator = false;

    if (node.expression) {
      // Transform expression lambdas into normal functions.
      node.expression = false;
      node.body = b.blockStatement([
        b.returnStatement(node.body)
      ]);
    }

    if (shouldTransformAsync) {
      awaitVisitor.visit(path.get("body"));
    }

    var outerBody = [];
    var innerBody = [];
    var bodyPath = path.get("body", "body");

    bodyPath.each(function(childPath) {
      var node = childPath.value;
      if (node && node._blockHoist != null) {
        outerBody.push(node);
      } else {
        innerBody.push(node);
      }
    });

    if (outerBody.length > 0) {
      // Only replace the inner body if we actually hoisted any statements
      // to the outer body.
      bodyPath.replace(innerBody);
    }

    var outerFnExpr = getOuterFnExpr(path);
    // Note that getOuterFnExpr has the side-effect of ensuring that the
    // function has a name (so node.id will always be an Identifier), even
    // if a temporary name has to be synthesized.
    n.Identifier.assert(node.id);
    var innerFnId = b.identifier(node.id.name + "$");
    var contextId = path.scope.declareTemporary("context$");
    var argsId = path.scope.declareTemporary("args$");
    var shouldAliasArguments = renameArguments(path, argsId);
    var vars = hoist(path);

    if (shouldAliasArguments) {
      vars = vars || b.variableDeclaration("var", []);
      vars.declarations.push(b.variableDeclarator(
        argsId, b.identifier("arguments")
      ));
    }

    var emitter = new Emitter(contextId);
    emitter.explode(path.get("body"));

    if (vars && vars.declarations.length > 0) {
      outerBody.push(vars);
    }

    var wrapArgs = [
      emitter.getContextFunction(innerFnId),
      // Async functions don't care about the outer function because they
      // don't need it to be marked and don't inherit from its .prototype.
      shouldTransformAsync ? b.literal(null) : outerFnExpr,
      b.thisExpression()
    ];

    var tryLocsList = emitter.getTryLocsList();
    if (tryLocsList) {
      wrapArgs.push(tryLocsList);
    }

    var wrapCall = b.callExpression(
      runtimeProperty(shouldTransformAsync ? "async" : "wrap"),
      wrapArgs
    );

    outerBody.push(b.returnStatement(wrapCall));
    node.body = b.blockStatement(outerBody);

    if (shouldTransformAsync) {
      node.async = false;
      return;
    }

    if (n.Expression.check(node)) {
      return b.callExpression(runtimeProperty("mark"), [node]);
    }
  },

  visitForOfStatement: function(path) {
    this.traverse(path);

    var node = path.value;
    var tempIterId = path.scope.declareTemporary("t$");
    var tempIterDecl = b.variableDeclarator(
      tempIterId,
      b.callExpression(
        runtimeProperty("values"),
        [node.right]
      )
    );

    var tempInfoId = path.scope.declareTemporary("t$");
    var tempInfoDecl = b.variableDeclarator(tempInfoId, null);

    var init = node.left;
    var loopId;
    if (n.VariableDeclaration.check(init)) {
      loopId = init.declarations[0].id;
      init.declarations.push(tempIterDecl, tempInfoDecl);
    } else {
      loopId = init;
      init = b.variableDeclaration("var", [
        tempIterDecl,
        tempInfoDecl
      ]);
    }
    n.Identifier.assert(loopId);

    var loopIdAssignExprStmt = b.expressionStatement(
      b.assignmentExpression(
        "=",
        loopId,
        b.memberExpression(
          tempInfoId,
          b.identifier("value"),
          false
        )
      )
    );

    if (n.BlockStatement.check(node.body)) {
      node.body.body.unshift(loopIdAssignExprStmt);
    } else {
      node.body = b.blockStatement([
        loopIdAssignExprStmt,
        node.body
      ]);
    }

    return b.forStatement(
      init,
      b.unaryExpression(
        "!",
        b.memberExpression(
          b.assignmentExpression(
            "=",
            tempInfoId,
            b.callExpression(
              b.memberExpression(
                tempIterId,
                b.identifier("next"),
                false
              ),
              []
            )
          ),
          b.identifier("done"),
          false
        )
      ),
      null,
      node.body
    );
  }
});

// Given a NodePath for a Function, return an Expression node that can be
// used to refer reliably to the function object from inside the function.
// This expression is essentially a replacement for arguments.callee, with
// the key advantage that it works in strict mode.
function getOuterFnExpr(funPath) {
  var node = funPath.value;
  n.Function.assert(node);

  if (!node.async && // Async functions don't need to be marked.
      n.FunctionDeclaration.check(node)) {
    var pp = funPath.parent;

    while (pp && !(n.BlockStatement.check(pp.value) ||
                   n.Program.check(pp.value))) {
      pp = pp.parent;
    }

    if (!pp) {
      return node.id;
    }

    var markDecl = getRuntimeMarkDecl(pp);
    var markedArray = markDecl.declarations[0].id;
    var funDeclIdArray = markDecl.declarations[0].init.callee.object;
    n.ArrayExpression.assert(funDeclIdArray);

    var index = funDeclIdArray.elements.length;
    funDeclIdArray.elements.push(node.id);

    return b.memberExpression(
      markedArray,
      b.literal(index),
      true
    );
  }

  return node.id || (
    node.id = funPath.scope.parent.declareTemporary("callee$")
  );
}

function getRuntimeMarkDecl(blockPath) {
  assert.ok(blockPath instanceof NodePath);
  var block = blockPath.node;
  isArray.assert(block.body);

  var info = getMarkInfo(block);
  if (info.decl) {
    return info.decl;
  }

  info.decl = b.variableDeclaration("var", [
    b.variableDeclarator(
      blockPath.scope.declareTemporary("marked"),
      b.callExpression(
        b.memberExpression(
          b.arrayExpression([]),
          b.identifier("map"),
          false
        ),
        [runtimeProperty("mark")]
      )
    )
  ]);

  for (var i = 0; i < block.body.length; ++i) {
    if (!shouldNotHoistAbove(blockPath.get("body", i))) {
      break;
    }
  }

  blockPath.get("body").insertAt(i, info.decl);

  return info.decl;
}

function shouldNotHoistAbove(stmtPath) {
  var value = stmtPath.value;
  n.Statement.assert(value);

  // If the first statement is a "use strict" declaration, make sure to
  // insert hoisted declarations afterwards.
  return n.ExpressionStatement.check(value) &&
    n.Literal.check(value.expression) &&
    value.expression.value === "use strict";
}

function renameArguments(funcPath, argsId) {
  assert.ok(funcPath instanceof types.NodePath);
  var func = funcPath.value;
  var didReplaceArguments = false;
  var hasImplicitArguments = false;

  recast.visit(funcPath, {
    visitFunction: function(path) {
      if (path.value === func) {
        hasImplicitArguments = !path.scope.lookup("arguments");
        this.traverse(path);
      } else {
        return false;
      }
    },

    visitIdentifier: function(path) {
      if (path.value.name === "arguments") {
        var isMemberProperty =
          n.MemberExpression.check(path.parent.node) &&
          path.name === "property" &&
          !path.parent.node.computed;

        if (!isMemberProperty) {
          path.replace(argsId);
          didReplaceArguments = true;
          return false;
        }
      }

      this.traverse(path);
    }
  });

  // If the traversal replaced any arguments identifiers, and those
  // identifiers were free variables, then we need to alias the outer
  // function's arguments object to the variable named by argsId.
  return didReplaceArguments && hasImplicitArguments;
}

var awaitVisitor = types.PathVisitor.fromMethodsObject({
  visitFunction: function(path) {
    return false; // Don't descend into nested function scopes.
  },

  visitAwaitExpression: function(path) {
    // Convert await and await* expressions to yield expressions.
    var argument = path.value.argument;

    // If the parser supports await* syntax using a boolean .all property
    // (#171), desugar that syntax to yield Promise.all(argument).
    if (path.value.all) {
      argument = b.callExpression(
        b.memberExpression(
          b.identifier("Promise"),
          b.identifier("all"),
          false
        ),
        [argument]
      );
    }

    return b.yieldExpression(argument, false);
  }
});

},{"..":442,"./emit":436,"./hoist":437,"./util":440,"assert":190,"fs":189,"private":435,"recast":469}],442:[function(require,module,exports){
(function (__dirname){
/**
 * Copyright (c) 2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * https://raw.github.com/facebook/regenerator/master/LICENSE file. An
 * additional grant of patent rights can be found in the PATENTS file in
 * the same directory.
 */

var assert = require("assert");
var path = require("path");
var fs = require("fs");
var through = require("through");
var transform = require("./lib/visit").transform;
var utils = require("./lib/util");
var recast = require("recast");
var types = recast.types;
var genOrAsyncFunExp = /\bfunction\s*\*|\basync\b/;
var blockBindingExp = /\b(let|const)\s+/;

function exports(file, options) {
  var data = [];
  return through(write, end);

  function write(buf) {
    data.push(buf);
  }

  function end() {
    this.queue(compile(data.join(""), options).code);
    this.queue(null);
  }
}

// To get a writable stream for use as a browserify transform, call
// require("regenerator")().
module.exports = exports;

// To include the runtime globally in the current node process, call
// require("regenerator").runtime().
function runtime() {
  require("./runtime");
}
exports.runtime = runtime;
runtime.path = path.join(__dirname, "runtime.js");

function compile(source, options) {
  options = normalizeOptions(options);

  if (!genOrAsyncFunExp.test(source)) {
    return {
      // Shortcut: no generators or async functions to transform.
      code: (options.includeRuntime === true ? fs.readFileSync(
        path.join(__dirname, "runtime.js"), "utf-8"
      ) + "\n" : "") + source
    };
  }

  var recastOptions = getRecastOptions(options);
  var ast = recast.parse(source, recastOptions);
  var nodePath = new types.NodePath(ast);
  var programPath = nodePath.get("program");

  if (shouldVarify(source, options)) {
    // Transpile let/const into var declarations.
    varifyAst(programPath.node);
  }

  transform(programPath, options);

  return recast.print(nodePath, recastOptions);
}

function normalizeOptions(options) {
  options = utils.defaults(options || {}, {
    includeRuntime: false,
    supportBlockBinding: true
  });

  if (!options.esprima) {
    options.esprima = require("esprima-fb");
  }

  assert.ok(
    /harmony/.test(options.esprima.version),
    "Bad esprima version: " + options.esprima.version
  );

  return options;
}

function getRecastOptions(options) {
  var recastOptions = {
    range: true
  };

  function copy(name) {
    if (name in options) {
      recastOptions[name] = options[name];
    }
  }

  copy("esprima");
  copy("sourceFileName");
  copy("sourceMapName");
  copy("inputSourceMap");
  copy("sourceRoot");

  return recastOptions;
}

function shouldVarify(source, options) {
  var supportBlockBinding = !!options.supportBlockBinding;
  if (supportBlockBinding) {
    if (!blockBindingExp.test(source)) {
      supportBlockBinding = false;
    }
  }

  return supportBlockBinding;
}

function varify(source, options) {
  var recastOptions = getRecastOptions(normalizeOptions(options));
  var ast = recast.parse(source, recastOptions);
  varifyAst(ast.program);
  return recast.print(ast, recastOptions).code;
}

function varifyAst(ast) {
  types.namedTypes.Program.assert(ast);

  var defsResult = require("defs")(ast, {
    ast: true,
    disallowUnknownReferences: false,
    disallowDuplicated: false,
    disallowVars: false,
    loopClosures: "iife"
  });

  if (defsResult.errors) {
    throw new Error(defsResult.errors.join("\n"))
  }

  return ast;
}

// Convenience for just translating let/const to var declarations.
exports.varify = varify;

// Transforms a string of source code, returning the { code, map? } result
// from recast.print.
exports.compile = compile;

// To modify an AST directly, call require("regenerator").transform(ast).
exports.transform = transform;

}).call(this,"/node_modules/regenerator")
},{"./lib/util":440,"./lib/visit":441,"./runtime":472,"assert":190,"defs":443,"esprima-fb":458,"fs":189,"path":199,"recast":469,"through":471}],443:[function(require,module,exports){
"use strict";

var assert = require("assert");
var is = require("simple-is");
var fmt = require("simple-fmt");
var stringmap = require("stringmap");
var stringset = require("stringset");
var alter = require("alter");
var traverse = require("ast-traverse");
var breakable = require("breakable");
var Scope = require("./scope");
var error = require("./error");
var getline = error.getline;
var options = require("./options");
var Stats = require("./stats");
var jshint_vars = require("./jshint_globals/vars.js");


function isConstLet(kind) {
    return is.someof(kind, ["const", "let"]);
}

function isVarConstLet(kind) {
    return is.someof(kind, ["var", "const", "let"]);
}

function isNonFunctionBlock(node) {
    return node.type === "BlockStatement" && is.noneof(node.$parent.type, ["FunctionDeclaration", "FunctionExpression"]);
}

function isForWithConstLet(node) {
    return node.type === "ForStatement" && node.init && node.init.type === "VariableDeclaration" && isConstLet(node.init.kind);
}

function isForInOfWithConstLet(node) {
    return isForInOf(node) && node.left.type === "VariableDeclaration" && isConstLet(node.left.kind);
}

function isForInOf(node) {
    return is.someof(node.type, ["ForInStatement", "ForOfStatement"]);
}

function isFunction(node) {
    return is.someof(node.type, ["FunctionDeclaration", "FunctionExpression"]);
}

function isLoop(node) {
    return is.someof(node.type, ["ForStatement", "ForInStatement", "ForOfStatement", "WhileStatement", "DoWhileStatement"]);
}

function isReference(node) {
    var parent = node.$parent;
    return node.$refToScope ||
        node.type === "Identifier" &&
        !(parent.type === "VariableDeclarator" && parent.id === node) && // var|let|const $
        !(parent.type === "MemberExpression" && parent.computed === false && parent.property === node) && // obj.$
        !(parent.type === "Property" && parent.key === node) && // {$: ...}
        !(parent.type === "LabeledStatement" && parent.label === node) && // $: ...
        !(parent.type === "CatchClause" && parent.param === node) && // catch($)
        !(isFunction(parent) && parent.id === node) && // function $(..
        !(isFunction(parent) && is.someof(node, parent.params)) && // function f($)..
        true;
}

function isLvalue(node) {
    return isReference(node) &&
        ((node.$parent.type === "AssignmentExpression" && node.$parent.left === node) ||
            (node.$parent.type === "UpdateExpression" && node.$parent.argument === node));
}

function createScopes(node, parent) {
    assert(!node.$scope);

    node.$parent = parent;
    node.$scope = node.$parent ? node.$parent.$scope : null; // may be overridden

    if (node.type === "Program") {
        // Top-level program is a scope
        // There's no block-scope under it
        node.$scope = new Scope({
            kind: "hoist",
            node: node,
            parent: null,
        });

    } else if (isFunction(node)) {
        // Function is a scope, with params in it
        // There's no block-scope under it

        node.$scope = new Scope({
            kind: "hoist",
            node: node,
            parent: node.$parent.$scope,
        });

        // function has a name
        if (node.id) {
            assert(node.id.type === "Identifier");

            if (node.type === "FunctionDeclaration") {
                // Function name goes in parent scope for declared functions
                node.$parent.$scope.add(node.id.name, "fun", node.id, null);
            } else if (node.type === "FunctionExpression") {
                // Function name goes in function's scope for named function expressions
                node.$scope.add(node.id.name, "fun", node.id, null);
            } else {
                assert(false);
            }
        }

        node.params.forEach(function(param) {
            node.$scope.add(param.name, "param", param, null);
        });

    } else if (node.type === "VariableDeclaration") {
        // Variable declarations names goes in current scope
        assert(isVarConstLet(node.kind));
        node.declarations.forEach(function(declarator) {
            assert(declarator.type === "VariableDeclarator");
            var name = declarator.id.name;
            if (options.disallowVars && node.kind === "var") {
                error(getline(declarator), "var {0} is not allowed (use let or const)", name);
            }
            node.$scope.add(name, node.kind, declarator.id, declarator.range[1]);
        });

    } else if (isForWithConstLet(node) || isForInOfWithConstLet(node)) {
        // For(In/Of) loop with const|let declaration is a scope, with declaration in it
        // There may be a block-scope under it
        node.$scope = new Scope({
            kind: "block",
            node: node,
            parent: node.$parent.$scope,
        });

    } else if (isNonFunctionBlock(node)) {
        // A block node is a scope unless parent is a function
        node.$scope = new Scope({
            kind: "block",
            node: node,
            parent: node.$parent.$scope,
        });

    } else if (node.type === "CatchClause") {
        var identifier = node.param;

        node.$scope = new Scope({
            kind: "catch-block",
            node: node,
            parent: node.$parent.$scope,
        });
        node.$scope.add(identifier.name, "caught", identifier, null);

        // All hoist-scope keeps track of which variables that are propagated through,
        // i.e. an reference inside the scope points to a declaration outside the scope.
        // This is used to mark "taint" the name since adding a new variable in the scope,
        // with a propagated name, would change the meaning of the existing references.
        //
        // catch(e) is special because even though e is a variable in its own scope,
        // we want to make sure that catch(e){let e} is never transformed to
        // catch(e){var e} (but rather var e$0). For that reason we taint the use of e
        // in the closest hoist-scope, i.e. where var e$0 belongs.
        node.$scope.closestHoistScope().markPropagates(identifier.name);
    }
}

function createTopScope(programScope, environments, globals) {
    function inject(obj) {
        for (var name in obj) {
            var writeable = obj[name];
            var kind = (writeable ? "var" : "const");
            if (topScope.hasOwn(name)) {
                topScope.remove(name);
            }
            topScope.add(name, kind, {loc: {start: {line: -1}}}, -1);
        }
    }

    var topScope = new Scope({
        kind: "hoist",
        node: {},
        parent: null,
    });

    var complementary = {
        undefined: false,
        Infinity: false,
        console: false,
    };

    inject(complementary);
    inject(jshint_vars.reservedVars);
    inject(jshint_vars.ecmaIdentifiers);
    if (environments) {
        environments.forEach(function(env) {
            if (!jshint_vars[env]) {
                error(-1, 'environment "{0}" not found', env);
            } else {
                inject(jshint_vars[env]);
            }
        });
    }
    if (globals) {
        inject(globals);
    }

    // link it in
    programScope.parent = topScope;
    topScope.children.push(programScope);

    return topScope;
}

function setupReferences(ast, allIdentifiers, opts) {
    var analyze = (is.own(opts, "analyze") ? opts.analyze : true);

    function visit(node) {
        if (!isReference(node)) {
            return;
        }
        allIdentifiers.add(node.name);

        var scope = node.$scope.lookup(node.name);
        if (analyze && !scope && options.disallowUnknownReferences) {
            error(getline(node), "reference to unknown global variable {0}", node.name);
        }
        // check const and let for referenced-before-declaration
        if (analyze && scope && is.someof(scope.getKind(node.name), ["const", "let"])) {
            var allowedFromPos = scope.getFromPos(node.name);
            var referencedAtPos = node.range[0];
            assert(is.finitenumber(allowedFromPos));
            assert(is.finitenumber(referencedAtPos));
            if (referencedAtPos < allowedFromPos) {
                if (!node.$scope.hasFunctionScopeBetween(scope)) {
                    error(getline(node), "{0} is referenced before its declaration", node.name);
                }
            }
        }
        node.$refToScope = scope;
    }

    traverse(ast, {pre: visit});
}

// TODO for loops init and body props are parallel to each other but init scope is outer that of body
// TODO is this a problem?

function varify(ast, stats, allIdentifiers, changes) {
    function unique(name) {
        assert(allIdentifiers.has(name));
        for (var cnt = 0; ; cnt++) {
            var genName = name + "$" + String(cnt);
            if (!allIdentifiers.has(genName)) {
                return genName;
            }
        }
    }

    function renameDeclarations(node) {
        if (node.type === "VariableDeclaration" && isConstLet(node.kind)) {
            var hoistScope = node.$scope.closestHoistScope();
            var origScope = node.$scope;

            // text change const|let => var
            changes.push({
                start: node.range[0],
                end: node.range[0] + node.kind.length,
                str: "var",
            });

            node.declarations.forEach(function(declarator) {
                assert(declarator.type === "VariableDeclarator");
                var name = declarator.id.name;

                stats.declarator(node.kind);

                // rename if
                // 1) name already exists in hoistScope, or
                // 2) name is already propagated (passed) through hoistScope or manually tainted
                var rename = (origScope !== hoistScope &&
                    (hoistScope.hasOwn(name) || hoistScope.doesPropagate(name)));

                var newName = (rename ? unique(name) : name);

                origScope.remove(name);
                hoistScope.add(newName, "var", declarator.id, declarator.range[1]);

                origScope.moves = origScope.moves || stringmap();
                origScope.moves.set(name, {
                    name: newName,
                    scope: hoistScope,
                });

                allIdentifiers.add(newName);

                if (newName !== name) {
                    stats.rename(name, newName, getline(declarator));

                    declarator.id.originalName = name;
                    declarator.id.name = newName;

                    // textchange var x => var x$1
                    changes.push({
                        start: declarator.id.range[0],
                        end: declarator.id.range[1],
                        str: newName,
                    });
                }
            });

            // ast change const|let => var
            node.kind = "var";
        }
    }

    function renameReferences(node) {
        if (!node.$refToScope) {
            return;
        }
        var move = node.$refToScope.moves && node.$refToScope.moves.get(node.name);
        if (!move) {
            return;
        }
        node.$refToScope = move.scope;

        if (node.name !== move.name) {
            node.originalName = node.name;
            node.name = move.name;

            if (node.alterop) {
                // node has no range because it is the result of another alter operation
                var existingOp = null;
                for (var i = 0; i < changes.length; i++) {
                    var op = changes[i];
                    if (op.node === node) {
                        existingOp = op;
                        break;
                    }
                }
                assert(existingOp);

                // modify op
                existingOp.str = move.name;
            } else {
                changes.push({
                    start: node.range[0],
                    end: node.range[1],
                    str: move.name,
                });
            }
        }
    }

    traverse(ast, {pre: renameDeclarations});
    traverse(ast, {pre: renameReferences});
    ast.$scope.traverse({pre: function(scope) {
        delete scope.moves;
    }});
}


function detectLoopClosures(ast) {
    traverse(ast, {pre: visit});

    function detectIifyBodyBlockers(body, node) {
        return breakable(function(brk) {
            traverse(body, {pre: function(n) {
                // if we hit an inner function of the loop body, don't traverse further
                if (isFunction(n)) {
                    return false;
                }

                var err = true; // reset to false in else-statement below
                var msg = "loop-variable {0} is captured by a loop-closure that can't be transformed due to use of {1} at line {2}";
                if (n.type === "BreakStatement") {
                    error(getline(node), msg, node.name, "break", getline(n));
                } else if (n.type === "ContinueStatement") {
                    error(getline(node), msg, node.name, "continue", getline(n));
                } else if (n.type === "ReturnStatement") {
                    error(getline(node), msg, node.name, "return", getline(n));
                } else if (n.type === "YieldExpression") {
                    error(getline(node), msg, node.name, "yield", getline(n));
                } else if (n.type === "Identifier" && n.name === "arguments") {
                    error(getline(node), msg, node.name, "arguments", getline(n));
                } else if (n.type === "VariableDeclaration" && n.kind === "var") {
                    error(getline(node), msg, node.name, "var", getline(n));
                } else {
                    err = false;
                }
                if (err) {
                    brk(true); // break traversal
                }
            }});
            return false;
        });
    }

    function visit(node) {
        // forbidden pattern:
        // <any>* <loop> <non-fn>* <constlet-def> <any>* <fn> <any>* <constlet-ref>
        var loopNode = null;
        if (isReference(node) && node.$refToScope && isConstLet(node.$refToScope.getKind(node.name))) {
            // traverse nodes up towards root from constlet-def
            // if we hit a function (before a loop) - ok!
            // if we hit a loop - maybe-ouch
            // if we reach root - ok!
            for (var n = node.$refToScope.node; ; ) {
                if (isFunction(n)) {
                    // we're ok (function-local)
                    return;
                } else if (isLoop(n)) {
                    loopNode = n;
                    // maybe not ok (between loop and function)
                    break;
                }
                n = n.$parent;
                if (!n) {
                    // ok (reached root)
                    return;
                }
            }

            assert(isLoop(loopNode));

            // traverse scopes from reference-scope up towards definition-scope
            // if we hit a function, ouch!
            var defScope = node.$refToScope;
            var generateIIFE = (options.loopClosures === "iife");

            for (var s = node.$scope; s; s = s.parent) {
                if (s === defScope) {
                    // we're ok
                    return;
                } else if (isFunction(s.node)) {
                    // not ok (there's a function between the reference and definition)
                    // may be transformable via IIFE

                    if (!generateIIFE) {
                        var msg = "loop-variable {0} is captured by a loop-closure. Tried \"loopClosures\": \"iife\" in defs-config.json?";
                        return error(getline(node), msg, node.name);
                    }

                    // here be dragons
                    // for (let x = ..; .. ; ..) { (function(){x})() } is forbidden because of current
                    // spec and VM status
                    if (loopNode.type === "ForStatement" && defScope.node === loopNode) {
                        var declarationNode = defScope.getNode(node.name);
                        return error(getline(declarationNode), "Not yet specced ES6 feature. {0} is declared in for-loop header and then captured in loop closure", declarationNode.name);
                    }

                    // speak now or forever hold your peace
                    if (detectIifyBodyBlockers(loopNode.body, node)) {
                        // error already generated
                        return;
                    }

                    // mark loop for IIFE-insertion
                    loopNode.$iify = true;
                }
            }
        }
    }
}

function transformLoopClosures(root, ops, options) {
    function insertOp(pos, str, node) {
        var op = {
            start: pos,
            end: pos,
            str: str,
        }
        if (node) {
            op.node = node;
        }
        ops.push(op);
    }

    traverse(root, {pre: function(node) {
        if (!node.$iify) {
            return;
        }

        var hasBlock = (node.body.type === "BlockStatement");

        var insertHead = (hasBlock ?
            node.body.range[0] + 1 : // just after body {
            node.body.range[0]); // just before existing expression
        var insertFoot = (hasBlock ?
            node.body.range[1] - 1 : // just before body }
            node.body.range[1]);  // just after existing expression

        var forInName = (isForInOf(node) && node.left.declarations[0].id.name);;
        var iifeHead = fmt("(function({0}){", forInName ? forInName : "");
        var iifeTail = fmt("}).call(this{0});", forInName ? ", " + forInName : "");

        // modify AST
        var iifeFragment = options.parse(iifeHead + iifeTail);
        var iifeExpressionStatement = iifeFragment.body[0];
        var iifeBlockStatement = iifeExpressionStatement.expression.callee.object.body;

        if (hasBlock) {
            var forBlockStatement = node.body;
            var tmp = forBlockStatement.body;
            forBlockStatement.body = [iifeExpressionStatement];
            iifeBlockStatement.body = tmp;
        } else {
            var tmp$0 = node.body;
            node.body = iifeExpressionStatement;
            iifeBlockStatement.body[0] = tmp$0;
        }

        // create ops
        insertOp(insertHead, iifeHead);

        if (forInName) {
            insertOp(insertFoot, "}).call(this, ");

            var args = iifeExpressionStatement.expression.arguments;
            var iifeArgumentIdentifier = args[1];
            iifeArgumentIdentifier.alterop = true;
            insertOp(insertFoot, forInName, iifeArgumentIdentifier);

            insertOp(insertFoot, ");");
        } else {
            insertOp(insertFoot, iifeTail);
        }
    }});
}

function detectConstAssignment(ast) {
    traverse(ast, {pre: function(node) {
        if (isLvalue(node)) {
            var scope = node.$scope.lookup(node.name);
            if (scope && scope.getKind(node.name) === "const") {
                error(getline(node), "can't assign to const variable {0}", node.name);
            }
        }
    }});
}

function detectConstantLets(ast) {
    traverse(ast, {pre: function(node) {
        if (isLvalue(node)) {
            var scope = node.$scope.lookup(node.name);
            if (scope) {
                scope.markWrite(node.name);
            }
        }
    }});

    ast.$scope.detectUnmodifiedLets();
}

function setupScopeAndReferences(root, opts) {
    // setup scopes
    traverse(root, {pre: createScopes});
    var topScope = createTopScope(root.$scope, options.environments, options.globals);

    // allIdentifiers contains all declared and referenced vars
    // collect all declaration names (including those in topScope)
    var allIdentifiers = stringset();
    topScope.traverse({pre: function(scope) {
        allIdentifiers.addMany(scope.decls.keys());
    }});

    // setup node.$refToScope, check for errors.
    // also collects all referenced names to allIdentifiers
    setupReferences(root, allIdentifiers, opts);
    return allIdentifiers;
}

function cleanupTree(root) {
    traverse(root, {pre: function(node) {
        for (var prop in node) {
            if (prop[0] === "$") {
                delete node[prop];
            }
        }
    }});
}

function run(src, config) {
    // alter the options singleton with user configuration
    for (var key in config) {
        options[key] = config[key];
    }

    var parsed;

    if (is.object(src)) {
        if (!options.ast) {
            return {
                errors: [
                    "Can't produce string output when input is an AST. " +
                    "Did you forget to set options.ast = true?"
                ],
            };
        }

        // Received an AST object as src, so no need to parse it.
        parsed = src;

    } else if (is.string(src)) {
        try {
            parsed = options.parse(src, {
                loc: true,
                range: true,
            });
        } catch (e) {
            return {
                errors: [
                    fmt("line {0} column {1}: Error during input file parsing\n{2}\n{3}",
                        e.lineNumber,
                        e.column,
                        src.split("\n")[e.lineNumber - 1],
                        fmt.repeat(" ", e.column - 1) + "^")
                ],
            };
        }

    } else {
        return {
            errors: ["Input was neither an AST object nor a string."],
        };
    }

    var ast = parsed;

    // TODO detect unused variables (never read)
    error.reset();

    var allIdentifiers = setupScopeAndReferences(ast, {});

    // static analysis passes
    detectLoopClosures(ast);
    detectConstAssignment(ast);
    //detectConstantLets(ast);

    var changes = [];
    transformLoopClosures(ast, changes, options);

    //ast.$scope.print(); process.exit(-1);

    if (error.errors.length >= 1) {
        return {
            errors: error.errors,
        };
    }

    if (changes.length > 0) {
        cleanupTree(ast);
        allIdentifiers = setupScopeAndReferences(ast, {analyze: false});
    }
    assert(error.errors.length === 0);

    // change constlet declarations to var, renamed if needed
    // varify modifies the scopes and AST accordingly and
    // returns a list of change fragments (to use with alter)
    var stats = new Stats();
    varify(ast, stats, allIdentifiers, changes);

    if (options.ast) {
        // return the modified AST instead of src code
        // get rid of all added $ properties first, such as $parent and $scope
        cleanupTree(ast);
        return {
            stats: stats,
            ast: ast,
        };
    } else {
        // apply changes produced by varify and return the transformed src
        var transformedSrc = alter(src, changes);
        return {
            stats: stats,
            src: transformedSrc,
        };
    }
}

module.exports = run;

},{"./error":444,"./jshint_globals/vars.js":445,"./options":446,"./scope":447,"./stats":448,"alter":449,"assert":190,"ast-traverse":451,"breakable":452,"simple-fmt":454,"simple-is":455,"stringmap":456,"stringset":457}],444:[function(require,module,exports){
"use strict";

var fmt = require("simple-fmt");
var assert = require("assert");

function error(line, var_args) {
    assert(arguments.length >= 2);

    var msg = (arguments.length === 2 ?
        String(var_args) : fmt.apply(fmt, Array.prototype.slice.call(arguments, 1)));

    error.errors.push(line === -1 ? msg : fmt("line {0}: {1}", line, msg));
}

error.reset = function() {
    error.errors = [];
};

error.getline = function(node) {
    if (node && node.loc && node.loc.start) {
        return node.loc.start.line;
    }
    return -1;
};

error.reset();

module.exports = error;

},{"assert":190,"simple-fmt":454}],445:[function(require,module,exports){
// jshint -W001

"use strict";

// Identifiers provided by the ECMAScript standard.

exports.reservedVars = {
	arguments : false,
	NaN       : false
};

exports.ecmaIdentifiers = {
	Array              : false,
	Boolean            : false,
	Date               : false,
	decodeURI          : false,
	decodeURIComponent : false,
	encodeURI          : false,
	encodeURIComponent : false,
	Error              : false,
	"eval"             : false,
	EvalError          : false,
	Function           : false,
	hasOwnProperty     : false,
	isFinite           : false,
	isNaN              : false,
	JSON               : false,
	Math               : false,
	Map                : false,
	Number             : false,
	Object             : false,
	parseInt           : false,
	parseFloat         : false,
	RangeError         : false,
	ReferenceError     : false,
	RegExp             : false,
	Set                : false,
	String             : false,
	SyntaxError        : false,
	TypeError          : false,
	URIError           : false,
	WeakMap            : false
};

// Global variables commonly provided by a web browser environment.

exports.browser = {
	ArrayBuffer          : false,
	ArrayBufferView      : false,
	Audio                : false,
	Blob                 : false,
	addEventListener     : false,
	applicationCache     : false,
	atob                 : false,
	blur                 : false,
	btoa                 : false,
	clearInterval        : false,
	clearTimeout         : false,
	close                : false,
	closed               : false,
	DataView             : false,
	DOMParser            : false,
	defaultStatus        : false,
	document             : false,
	Element              : false,
	event                : false,
	FileReader           : false,
	Float32Array         : false,
	Float64Array         : false,
	FormData             : false,
	focus                : false,
	frames               : false,
	getComputedStyle     : false,
	HTMLElement          : false,
	HTMLAnchorElement    : false,
	HTMLBaseElement      : false,
	HTMLBlockquoteElement: false,
	HTMLBodyElement      : false,
	HTMLBRElement        : false,
	HTMLButtonElement    : false,
	HTMLCanvasElement    : false,
	HTMLDirectoryElement : false,
	HTMLDivElement       : false,
	HTMLDListElement     : false,
	HTMLFieldSetElement  : false,
	HTMLFontElement      : false,
	HTMLFormElement      : false,
	HTMLFrameElement     : false,
	HTMLFrameSetElement  : false,
	HTMLHeadElement      : false,
	HTMLHeadingElement   : false,
	HTMLHRElement        : false,
	HTMLHtmlElement      : false,
	HTMLIFrameElement    : false,
	HTMLImageElement     : false,
	HTMLInputElement     : false,
	HTMLIsIndexElement   : false,
	HTMLLabelElement     : false,
	HTMLLayerElement     : false,
	HTMLLegendElement    : false,
	HTMLLIElement        : false,
	HTMLLinkElement      : false,
	HTMLMapElement       : false,
	HTMLMenuElement      : false,
	HTMLMetaElement      : false,
	HTMLModElement       : false,
	HTMLObjectElement    : false,
	HTMLOListElement     : false,
	HTMLOptGroupElement  : false,
	HTMLOptionElement    : false,
	HTMLParagraphElement : false,
	HTMLParamElement     : false,
	HTMLPreElement       : false,
	HTMLQuoteElement     : false,
	HTMLScriptElement    : false,
	HTMLSelectElement    : false,
	HTMLStyleElement     : false,
	HTMLTableCaptionElement: false,
	HTMLTableCellElement : false,
	HTMLTableColElement  : false,
	HTMLTableElement     : false,
	HTMLTableRowElement  : false,
	HTMLTableSectionElement: false,
	HTMLTextAreaElement  : false,
	HTMLTitleElement     : false,
	HTMLUListElement     : false,
	HTMLVideoElement     : false,
	history              : false,
	Int16Array           : false,
	Int32Array           : false,
	Int8Array            : false,
	Image                : false,
	length               : false,
	localStorage         : false,
	location             : false,
	MessageChannel       : false,
	MessageEvent         : false,
	MessagePort          : false,
	moveBy               : false,
	moveTo               : false,
	MutationObserver     : false,
	name                 : false,
	Node                 : false,
	NodeFilter           : false,
	navigator            : false,
	onbeforeunload       : true,
	onblur               : true,
	onerror              : true,
	onfocus              : true,
	onload               : true,
	onresize             : true,
	onunload             : true,
	open                 : false,
	openDatabase         : false,
	opener               : false,
	Option               : false,
	parent               : false,
	print                : false,
	removeEventListener  : false,
	resizeBy             : false,
	resizeTo             : false,
	screen               : false,
	scroll               : false,
	scrollBy             : false,
	scrollTo             : false,
	sessionStorage       : false,
	setInterval          : false,
	setTimeout           : false,
	SharedWorker         : false,
	status               : false,
	top                  : false,
	Uint16Array          : false,
	Uint32Array          : false,
	Uint8Array           : false,
	Uint8ClampedArray    : false,
	WebSocket            : false,
	window               : false,
	Worker               : false,
	XMLHttpRequest       : false,
	XMLSerializer        : false,
	XPathEvaluator       : false,
	XPathException       : false,
	XPathExpression      : false,
	XPathNamespace       : false,
	XPathNSResolver      : false,
	XPathResult          : false
};

exports.devel = {
	alert  : false,
	confirm: false,
	console: false,
	Debug  : false,
	opera  : false,
	prompt : false
};

exports.worker = {
	importScripts: true,
	postMessage  : true,
	self         : true
};

// Widely adopted global names that are not part of ECMAScript standard
exports.nonstandard = {
	escape  : false,
	unescape: false
};

// Globals provided by popular JavaScript environments.

exports.couch = {
	"require" : false,
	respond   : false,
	getRow    : false,
	emit      : false,
	send      : false,
	start     : false,
	sum       : false,
	log       : false,
	exports   : false,
	module    : false,
	provides  : false
};

exports.node = {
	__filename   : false,
	__dirname    : false,
	Buffer       : false,
	DataView     : false,
	console      : false,
	exports      : true,  // In Node it is ok to exports = module.exports = foo();
	GLOBAL       : false,
	global       : false,
	module       : false,
	process      : false,
	require      : false,
	setTimeout   : false,
	clearTimeout : false,
	setInterval  : false,
	clearInterval: false
};

exports.phantom = {
	phantom      : true,
	require      : true,
	WebPage      : true
};

exports.rhino = {
	defineClass  : false,
	deserialize  : false,
	gc           : false,
	help         : false,
	importPackage: false,
	"java"       : false,
	load         : false,
	loadClass    : false,
	print        : false,
	quit         : false,
	readFile     : false,
	readUrl      : false,
	runCommand   : false,
	seal         : false,
	serialize    : false,
	spawn        : false,
	sync         : false,
	toint32      : false,
	version      : false
};

exports.wsh = {
	ActiveXObject            : true,
	Enumerator               : true,
	GetObject                : true,
	ScriptEngine             : true,
	ScriptEngineBuildVersion : true,
	ScriptEngineMajorVersion : true,
	ScriptEngineMinorVersion : true,
	VBArray                  : true,
	WSH                      : true,
	WScript                  : true,
	XDomainRequest           : true
};

// Globals provided by popular JavaScript libraries.

exports.dojo = {
	dojo     : false,
	dijit    : false,
	dojox    : false,
	define	 : false,
	"require": false
};

exports.jquery = {
	"$"    : false,
	jQuery : false
};

exports.mootools = {
	"$"           : false,
	"$$"          : false,
	Asset         : false,
	Browser       : false,
	Chain         : false,
	Class         : false,
	Color         : false,
	Cookie        : false,
	Core          : false,
	Document      : false,
	DomReady      : false,
	DOMEvent      : false,
	DOMReady      : false,
	Drag          : false,
	Element       : false,
	Elements      : false,
	Event         : false,
	Events        : false,
	Fx            : false,
	Group         : false,
	Hash          : false,
	HtmlTable     : false,
	Iframe        : false,
	IframeShim    : false,
	InputValidator: false,
	instanceOf    : false,
	Keyboard      : false,
	Locale        : false,
	Mask          : false,
	MooTools      : false,
	Native        : false,
	Options       : false,
	OverText      : false,
	Request       : false,
	Scroller      : false,
	Slick         : false,
	Slider        : false,
	Sortables     : false,
	Spinner       : false,
	Swiff         : false,
	Tips          : false,
	Type          : false,
	typeOf        : false,
	URI           : false,
	Window        : false
};

exports.prototypejs = {
	"$"               : false,
	"$$"              : false,
	"$A"              : false,
	"$F"              : false,
	"$H"              : false,
	"$R"              : false,
	"$break"          : false,
	"$continue"       : false,
	"$w"              : false,
	Abstract          : false,
	Ajax              : false,
	Class             : false,
	Enumerable        : false,
	Element           : false,
	Event             : false,
	Field             : false,
	Form              : false,
	Hash              : false,
	Insertion         : false,
	ObjectRange       : false,
	PeriodicalExecuter: false,
	Position          : false,
	Prototype         : false,
	Selector          : false,
	Template          : false,
	Toggle            : false,
	Try               : false,
	Autocompleter     : false,
	Builder           : false,
	Control           : false,
	Draggable         : false,
	Draggables        : false,
	Droppables        : false,
	Effect            : false,
	Sortable          : false,
	SortableObserver  : false,
	Sound             : false,
	Scriptaculous     : false
};

exports.yui = {
	YUI       : false,
	Y         : false,
	YUI_config: false
};


},{}],446:[function(require,module,exports){
// default configuration

module.exports = {
    disallowVars: false,
    disallowDuplicated: true,
    disallowUnknownReferences: true,
    parse: require("esprima-fb").parse,
};

},{"esprima-fb":453}],447:[function(require,module,exports){
"use strict";

var assert = require("assert");
var stringmap = require("stringmap");
var stringset = require("stringset");
var is = require("simple-is");
var fmt = require("simple-fmt");
var error = require("./error");
var getline = error.getline;
var options = require("./options");

function Scope(args) {
    assert(is.someof(args.kind, ["hoist", "block", "catch-block"]));
    assert(is.object(args.node));
    assert(args.parent === null || is.object(args.parent));

    // kind === "hoist": function scopes, program scope, injected globals
    // kind === "block": ES6 block scopes
    // kind === "catch-block": catch block scopes
    this.kind = args.kind;

    // the AST node the block corresponds to
    this.node = args.node;

    // parent scope
    this.parent = args.parent;

    // children scopes for easier traversal (populated internally)
    this.children = [];

    // scope declarations. decls[variable_name] = {
    //     kind: "fun" for functions,
    //           "param" for function parameters,
    //           "caught" for catch parameter
    //           "var",
    //           "const",
    //           "let"
    //     node: the AST node the declaration corresponds to
    //     from: source code index from which it is visible at earliest
    //           (only stored for "const", "let" [and "var"] nodes)
    // }
    this.decls = stringmap();

    // names of all declarations within this scope that was ever written
    // TODO move to decls.w?
    // TODO create corresponding read?
    this.written = stringset();

    // names of all variables declared outside this hoist scope but
    // referenced in this scope (immediately or in child).
    // only stored on hoist scopes for efficiency
    // (because we currently generate lots of empty block scopes)
    this.propagates = (this.kind === "hoist" ? stringset() : null);

    // scopes register themselves with their parents for easier traversal
    if (this.parent) {
        this.parent.children.push(this);
    }
}

Scope.prototype.print = function(indent) {
    indent = indent || 0;
    var scope = this;
    var names = this.decls.keys().map(function(name) {
        return fmt("{0} [{1}]", name, scope.decls.get(name).kind);
    }).join(", ");
    var propagates = this.propagates ? this.propagates.items().join(", ") : "";
    console.log(fmt("{0}{1}: {2}. propagates: {3}", fmt.repeat(" ", indent), this.node.type, names, propagates));
    this.children.forEach(function(c) {
        c.print(indent + 2);
    });
};

Scope.prototype.add = function(name, kind, node, referableFromPos) {
    assert(is.someof(kind, ["fun", "param", "var", "caught", "const", "let"]));

    function isConstLet(kind) {
        return is.someof(kind, ["const", "let"]);
    }

    var scope = this;

    // search nearest hoist-scope for fun, param and var's
    // const, let and caught variables go directly in the scope (which may be hoist, block or catch-block)
    if (is.someof(kind, ["fun", "param", "var"])) {
        while (scope.kind !== "hoist") {
            if (scope.decls.has(name) && isConstLet(scope.decls.get(name).kind)) { // could be caught
                return error(getline(node), "{0} is already declared", name);
            }
            scope = scope.parent;
        }
    }
    // name exists in scope and either new or existing kind is const|let => error
    if (scope.decls.has(name) && (options.disallowDuplicated || isConstLet(scope.decls.get(name).kind) || isConstLet(kind))) {
        return error(getline(node), "{0} is already declared", name);
    }

    var declaration = {
        kind: kind,
        node: node,
    };
    if (referableFromPos) {
        assert(is.someof(kind, ["var", "const", "let"]));
        declaration.from = referableFromPos;
    }
    scope.decls.set(name, declaration);
};

Scope.prototype.getKind = function(name) {
    assert(is.string(name));
    var decl = this.decls.get(name);
    return decl ? decl.kind : null;
};

Scope.prototype.getNode = function(name) {
    assert(is.string(name));
    var decl = this.decls.get(name);
    return decl ? decl.node : null;
};

Scope.prototype.getFromPos = function(name) {
    assert(is.string(name));
    var decl = this.decls.get(name);
    return decl ? decl.from : null;
};

Scope.prototype.hasOwn = function(name) {
    return this.decls.has(name);
};

Scope.prototype.remove = function(name) {
    return this.decls.remove(name);
};

Scope.prototype.doesPropagate = function(name) {
    return this.propagates.has(name);
};

Scope.prototype.markPropagates = function(name) {
    this.propagates.add(name);
};

Scope.prototype.closestHoistScope = function() {
    var scope = this;
    while (scope.kind !== "hoist") {
        scope = scope.parent;
    }
    return scope;
};

Scope.prototype.hasFunctionScopeBetween = function(outer) {
    function isFunction(node) {
        return is.someof(node.type, ["FunctionDeclaration", "FunctionExpression"]);
    }

    for (var scope = this; scope; scope = scope.parent) {
        if (scope === outer) {
            return false;
        }
        if (isFunction(scope.node)) {
            return true;
        }
    }

    throw new Error("wasn't inner scope of outer");
};

Scope.prototype.lookup = function(name) {
    for (var scope = this; scope; scope = scope.parent) {
        if (scope.decls.has(name)) {
            return scope;
        } else if (scope.kind === "hoist") {
            scope.propagates.add(name);
        }
    }
    return null;
};

Scope.prototype.markWrite = function(name) {
    assert(is.string(name));
    this.written.add(name);
};

// detects let variables that are never modified (ignores top-level)
Scope.prototype.detectUnmodifiedLets = function() {
    var outmost = this;

    function detect(scope) {
        if (scope !== outmost) {
            scope.decls.keys().forEach(function(name) {
                if (scope.getKind(name) === "let" && !scope.written.has(name)) {
                    return error(getline(scope.getNode(name)), "{0} is declared as let but never modified so could be const", name);
                }
            });
        }

        scope.children.forEach(function(childScope) {
            detect(childScope);
        });
    }
    detect(this);
};

Scope.prototype.traverse = function(options) {
    options = options || {};
    var pre = options.pre;
    var post = options.post;

    function visit(scope) {
        if (pre) {
            pre(scope);
        }
        scope.children.forEach(function(childScope) {
            visit(childScope);
        });
        if (post) {
            post(scope);
        }
    }

    visit(this);
};

module.exports = Scope;

},{"./error":444,"./options":446,"assert":190,"simple-fmt":454,"simple-is":455,"stringmap":456,"stringset":457}],448:[function(require,module,exports){
var fmt = require("simple-fmt");
var is = require("simple-is");
var assert = require("assert");

function Stats() {
    this.lets = 0;
    this.consts = 0;
    this.renames = [];
}

Stats.prototype.declarator = function(kind) {
    assert(is.someof(kind, ["const", "let"]));
    if (kind === "const") {
        this.consts++;
    } else {
        this.lets++;
    }
};

Stats.prototype.rename = function(oldName, newName, line) {
    this.renames.push({
        oldName: oldName,
        newName: newName,
        line: line,
    });
};

Stats.prototype.toString = function() {
//    console.log("defs.js stats for file {0}:", filename)

    var renames = this.renames.map(function(r) {
        return r;
    }).sort(function(a, b) {
            return a.line - b.line;
        }); // sort a copy of renames

    var renameStr = renames.map(function(rename) {
        return fmt("\nline {0}: {1} => {2}", rename.line, rename.oldName, rename.newName);
    }).join("");

    var sum = this.consts + this.lets;
    var constlets = (sum === 0 ?
        "can't calculate const coverage (0 consts, 0 lets)" :
        fmt("{0}% const coverage ({1} consts, {2} lets)",
            Math.floor(100 * this.consts / sum), this.consts, this.lets));

    return constlets + renameStr + "\n";
};

module.exports = Stats;

},{"assert":190,"simple-fmt":454,"simple-is":455}],449:[function(require,module,exports){
// alter.js
// MIT licensed, see LICENSE file
// Copyright (c) 2013 Olov Lassus <olov.lassus@gmail.com>

var assert = require("assert");
var stableSort = require("stable");

// fragments is a list of {start: index, end: index, str: string to replace with}
function alter(str, fragments) {
    "use strict";

    var isArray = Array.isArray || function(v) {
        return Object.prototype.toString.call(v) === "[object Array]";
    };;

    assert(typeof str === "string");
    assert(isArray(fragments));

    // stableSort isn't in-place so no need to copy array first
    var sortedFragments = stableSort(fragments, function(a, b) {
        return a.start - b.start;
    });

    var outs = [];

    var pos = 0;
    for (var i = 0; i < sortedFragments.length; i++) {
        var frag = sortedFragments[i];

        assert(pos <= frag.start);
        assert(frag.start <= frag.end);
        outs.push(str.slice(pos, frag.start));
        outs.push(frag.str);
        pos = frag.end;
    }
    if (pos < str.length) {
        outs.push(str.slice(pos));
    }

    return outs.join("");
}

if (typeof module !== "undefined" && typeof module.exports !== "undefined") {
    module.exports = alter;
}

},{"assert":190,"stable":450}],450:[function(require,module,exports){
//! stable.js 0.1.5, https://github.com/Two-Screen/stable
//! © 2014 Angry Bytes and contributors. MIT licensed.

(function() {

// A stable array sort, because `Array#sort()` is not guaranteed stable.
// This is an implementation of merge sort, without recursion.

var stable = function(arr, comp) {
    return exec(arr.slice(), comp);
};

stable.inplace = function(arr, comp) {
    var result = exec(arr, comp);

    // This simply copies back if the result isn't in the original array,
    // which happens on an odd number of passes.
    if (result !== arr) {
        pass(result, null, arr.length, arr);
    }

    return arr;
};

// Execute the sort using the input array and a second buffer as work space.
// Returns one of those two, containing the final result.
function exec(arr, comp) {
    if (typeof(comp) !== 'function') {
        comp = function(a, b) {
            return String(a).localeCompare(b);
        };
    }

    // Short-circuit when there's nothing to sort.
    var len = arr.length;
    if (len <= 1) {
        return arr;
    }

    // Rather than dividing input, simply iterate chunks of 1, 2, 4, 8, etc.
    // Chunks are the size of the left or right hand in merge sort.
    // Stop when the left-hand covers all of the array.
    var buffer = new Array(len);
    for (var chk = 1; chk < len; chk *= 2) {
        pass(arr, comp, chk, buffer);

        var tmp = arr;
        arr = buffer;
        buffer = tmp;
    }

    return arr;
}

// Run a single pass with the given chunk size.
var pass = function(arr, comp, chk, result) {
    var len = arr.length;
    var i = 0;
    // Step size / double chunk size.
    var dbl = chk * 2;
    // Bounds of the left and right chunks.
    var l, r, e;
    // Iterators over the left and right chunk.
    var li, ri;

    // Iterate over pairs of chunks.
    for (l = 0; l < len; l += dbl) {
        r = l + chk;
        e = r + chk;
        if (r > len) r = len;
        if (e > len) e = len;

        // Iterate both chunks in parallel.
        li = l;
        ri = r;
        while (true) {
            // Compare the chunks.
            if (li < r && ri < e) {
                // This works for a regular `sort()` compatible comparator,
                // but also for a simple comparator like: `a > b`
                if (comp(arr[li], arr[ri]) <= 0) {
                    result[i++] = arr[li++];
                }
                else {
                    result[i++] = arr[ri++];
                }
            }
            // Nothing to compare, just flush what's left.
            else if (li < r) {
                result[i++] = arr[li++];
            }
            else if (ri < e) {
                result[i++] = arr[ri++];
            }
            // Both iterators are at the chunk ends.
            else {
                break;
            }
        }
    }
};

// Export using CommonJS or to the window.
if (typeof(module) !== 'undefined') {
    module.exports = stable;
}
else {
    window.stable = stable;
}

})();

},{}],451:[function(require,module,exports){
function traverse(root, options) {
    "use strict";

    options = options || {};
    var pre = options.pre;
    var post = options.post;
    var skipProperty = options.skipProperty;

    function visit(node, parent, prop, idx) {
        if (!node || typeof node.type !== "string") {
            return;
        }

        var res = undefined;
        if (pre) {
            res = pre(node, parent, prop, idx);
        }

        if (res !== false) {
            for (var prop in node) {
                if (skipProperty ? skipProperty(prop, node) : prop[0] === "$") {
                    continue;
                }

                var child = node[prop];

                if (Array.isArray(child)) {
                    for (var i = 0; i < child.length; i++) {
                        visit(child[i], node, prop, i);
                    }
                } else {
                    visit(child, node, prop);
                }
            }
        }

        if (post) {
            post(node, parent, prop, idx);
        }
    }

    visit(root, null);
};

if (typeof module !== "undefined" && typeof module.exports !== "undefined") {
    module.exports = traverse;
}

},{}],452:[function(require,module,exports){
// breakable.js
// MIT licensed, see LICENSE file
// Copyright (c) 2013-2014 Olov Lassus <olov.lassus@gmail.com>

var breakable = (function() {
    "use strict";

    function Val(val, brk) {
        this.val = val;
        this.brk = brk;
    }

    function make_brk() {
        return function brk(val) {
            throw new Val(val, brk);
        };
    }

    function breakable(fn) {
        var brk = make_brk();
        try {
            return fn(brk);
        } catch (e) {
            if (e instanceof Val && e.brk === brk) {
                return e.val;
            }
            throw e;
        }
    }

    return breakable;
})();

if (typeof module !== "undefined" && typeof module.exports !== "undefined") {
    module.exports = breakable;
}

},{}],453:[function(require,module,exports){
/*
  Copyright (C) 2013 Ariya Hidayat <ariya.hidayat@gmail.com>
  Copyright (C) 2013 Thaddee Tyl <thaddee.tyl@gmail.com>
  Copyright (C) 2012 Ariya Hidayat <ariya.hidayat@gmail.com>
  Copyright (C) 2012 Mathias Bynens <mathias@qiwi.be>
  Copyright (C) 2012 Joost-Wim Boekesteijn <joost-wim@boekesteijn.nl>
  Copyright (C) 2012 Kris Kowal <kris.kowal@cixar.com>
  Copyright (C) 2012 Yusuke Suzuki <utatane.tea@gmail.com>
  Copyright (C) 2012 Arpad Borsos <arpad.borsos@googlemail.com>
  Copyright (C) 2011 Ariya Hidayat <ariya.hidayat@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*jslint bitwise:true plusplus:true */
/*global esprima:true, define:true, exports:true, window: true,
throwError: true, generateStatement: true, peek: true,
parseAssignmentExpression: true, parseBlock: true,
parseClassExpression: true, parseClassDeclaration: true, parseExpression: true,
parseDeclareClass: true, parseDeclareFunction: true,
parseDeclareModule: true, parseDeclareVariable: true,
parseForStatement: true,
parseFunctionDeclaration: true, parseFunctionExpression: true,
parseFunctionSourceElements: true, parseVariableIdentifier: true,
parseImportSpecifier: true, parseInterface: true,
parseLeftHandSideExpression: true, parseParams: true, validateParam: true,
parseSpreadOrAssignmentExpression: true,
parseStatement: true, parseSourceElement: true, parseConciseBody: true,
advanceXJSChild: true, isXJSIdentifierStart: true, isXJSIdentifierPart: true,
scanXJSStringLiteral: true, scanXJSIdentifier: true,
parseXJSAttributeValue: true, parseXJSChild: true, parseXJSElement: true, parseXJSExpressionContainer: true, parseXJSEmptyExpression: true,
parseFunctionTypeParam: true,
parsePrimaryType: true,
parseTypeAlias: true,
parseType: true, parseTypeAnnotatableIdentifier: true, parseTypeAnnotation: true,
parseYieldExpression: true, parseAwaitExpression: true
*/

(function (root, factory) {
    'use strict';

    // Universal Module Definition (UMD) to support AMD, CommonJS/Node.js,
    // Rhino, and plain browser loading.
    if (typeof define === 'function' && define.amd) {
        define(['exports'], factory);
    } else if (typeof exports !== 'undefined') {
        factory(exports);
    } else {
        factory((root.esprima = {}));
    }
}(this, function (exports) {
    'use strict';

    var Token,
        TokenName,
        FnExprTokens,
        Syntax,
        PropertyKind,
        Messages,
        Regex,
        SyntaxTreeDelegate,
        XHTMLEntities,
        ClassPropertyType,
        source,
        strict,
        index,
        lineNumber,
        lineStart,
        length,
        delegate,
        lookahead,
        state,
        extra;

    Token = {
        BooleanLiteral: 1,
        EOF: 2,
        Identifier: 3,
        Keyword: 4,
        NullLiteral: 5,
        NumericLiteral: 6,
        Punctuator: 7,
        StringLiteral: 8,
        RegularExpression: 9,
        Template: 10,
        XJSIdentifier: 11,
        XJSText: 12
    };

    TokenName = {};
    TokenName[Token.BooleanLiteral] = 'Boolean';
    TokenName[Token.EOF] = '<end>';
    TokenName[Token.Identifier] = 'Identifier';
    TokenName[Token.Keyword] = 'Keyword';
    TokenName[Token.NullLiteral] = 'Null';
    TokenName[Token.NumericLiteral] = 'Numeric';
    TokenName[Token.Punctuator] = 'Punctuator';
    TokenName[Token.StringLiteral] = 'String';
    TokenName[Token.XJSIdentifier] = 'XJSIdentifier';
    TokenName[Token.XJSText] = 'XJSText';
    TokenName[Token.RegularExpression] = 'RegularExpression';

    // A function following one of those tokens is an expression.
    FnExprTokens = ['(', '{', '[', 'in', 'typeof', 'instanceof', 'new',
                    'return', 'case', 'delete', 'throw', 'void',
                    // assignment operators
                    '=', '+=', '-=', '*=', '/=', '%=', '<<=', '>>=', '>>>=',
                    '&=', '|=', '^=', ',',
                    // binary/unary operators
                    '+', '-', '*', '/', '%', '++', '--', '<<', '>>', '>>>', '&',
                    '|', '^', '!', '~', '&&', '||', '?', ':', '===', '==', '>=',
                    '<=', '<', '>', '!=', '!=='];

    Syntax = {
        AnyTypeAnnotation: 'AnyTypeAnnotation',
        ArrayExpression: 'ArrayExpression',
        ArrayPattern: 'ArrayPattern',
        ArrayTypeAnnotation: 'ArrayTypeAnnotation',
        ArrowFunctionExpression: 'ArrowFunctionExpression',
        AssignmentExpression: 'AssignmentExpression',
        BinaryExpression: 'BinaryExpression',
        BlockStatement: 'BlockStatement',
        BooleanTypeAnnotation: 'BooleanTypeAnnotation',
        BreakStatement: 'BreakStatement',
        CallExpression: 'CallExpression',
        CatchClause: 'CatchClause',
        ClassBody: 'ClassBody',
        ClassDeclaration: 'ClassDeclaration',
        ClassExpression: 'ClassExpression',
        ClassImplements: 'ClassImplements',
        ClassProperty: 'ClassProperty',
        ComprehensionBlock: 'ComprehensionBlock',
        ComprehensionExpression: 'ComprehensionExpression',
        ConditionalExpression: 'ConditionalExpression',
        ContinueStatement: 'ContinueStatement',
        DebuggerStatement: 'DebuggerStatement',
        DeclareClass: 'DeclareClass',
        DeclareFunction: 'DeclareFunction',
        DeclareModule: 'DeclareModule',
        DeclareVariable: 'DeclareVariable',
        DoWhileStatement: 'DoWhileStatement',
        EmptyStatement: 'EmptyStatement',
        ExportDeclaration: 'ExportDeclaration',
        ExportBatchSpecifier: 'ExportBatchSpecifier',
        ExportSpecifier: 'ExportSpecifier',
        ExpressionStatement: 'ExpressionStatement',
        ForInStatement: 'ForInStatement',
        ForOfStatement: 'ForOfStatement',
        ForStatement: 'ForStatement',
        FunctionDeclaration: 'FunctionDeclaration',
        FunctionExpression: 'FunctionExpression',
        FunctionTypeAnnotation: 'FunctionTypeAnnotation',
        FunctionTypeParam: 'FunctionTypeParam',
        GenericTypeAnnotation: 'GenericTypeAnnotation',
        Identifier: 'Identifier',
        IfStatement: 'IfStatement',
        ImportDeclaration: 'ImportDeclaration',
        ImportDefaultSpecifier: 'ImportDefaultSpecifier',
        ImportNamespaceSpecifier: 'ImportNamespaceSpecifier',
        ImportSpecifier: 'ImportSpecifier',
        InterfaceDeclaration: 'InterfaceDeclaration',
        InterfaceExtends: 'InterfaceExtends',
        IntersectionTypeAnnotation: 'IntersectionTypeAnnotation',
        LabeledStatement: 'LabeledStatement',
        Literal: 'Literal',
        LogicalExpression: 'LogicalExpression',
        MemberExpression: 'MemberExpression',
        MethodDefinition: 'MethodDefinition',
        ModuleSpecifier: 'ModuleSpecifier',
        NewExpression: 'NewExpression',
        NullableTypeAnnotation: 'NullableTypeAnnotation',
        NumberTypeAnnotation: 'NumberTypeAnnotation',
        ObjectExpression: 'ObjectExpression',
        ObjectPattern: 'ObjectPattern',
        ObjectTypeAnnotation: 'ObjectTypeAnnotation',
        ObjectTypeCallProperty: 'ObjectTypeCallProperty',
        ObjectTypeIndexer: 'ObjectTypeIndexer',
        ObjectTypeProperty: 'ObjectTypeProperty',
        Program: 'Program',
        Property: 'Property',
        QualifiedTypeIdentifier: 'QualifiedTypeIdentifier',
        ReturnStatement: 'ReturnStatement',
        SequenceExpression: 'SequenceExpression',
        SpreadElement: 'SpreadElement',
        SpreadProperty: 'SpreadProperty',
        StringLiteralTypeAnnotation: 'StringLiteralTypeAnnotation',
        StringTypeAnnotation: 'StringTypeAnnotation',
        SwitchCase: 'SwitchCase',
        SwitchStatement: 'SwitchStatement',
        TaggedTemplateExpression: 'TaggedTemplateExpression',
        TemplateElement: 'TemplateElement',
        TemplateLiteral: 'TemplateLiteral',
        ThisExpression: 'ThisExpression',
        ThrowStatement: 'ThrowStatement',
        TupleTypeAnnotation: 'TupleTypeAnnotation',
        TryStatement: 'TryStatement',
        TypeAlias: 'TypeAlias',
        TypeAnnotation: 'TypeAnnotation',
        TypeofTypeAnnotation: 'TypeofTypeAnnotation',
        TypeParameterDeclaration: 'TypeParameterDeclaration',
        TypeParameterInstantiation: 'TypeParameterInstantiation',
        UnaryExpression: 'UnaryExpression',
        UnionTypeAnnotation: 'UnionTypeAnnotation',
        UpdateExpression: 'UpdateExpression',
        VariableDeclaration: 'VariableDeclaration',
        VariableDeclarator: 'VariableDeclarator',
        VoidTypeAnnotation: 'VoidTypeAnnotation',
        WhileStatement: 'WhileStatement',
        WithStatement: 'WithStatement',
        XJSIdentifier: 'XJSIdentifier',
        XJSNamespacedName: 'XJSNamespacedName',
        XJSMemberExpression: 'XJSMemberExpression',
        XJSEmptyExpression: 'XJSEmptyExpression',
        XJSExpressionContainer: 'XJSExpressionContainer',
        XJSElement: 'XJSElement',
        XJSClosingElement: 'XJSClosingElement',
        XJSOpeningElement: 'XJSOpeningElement',
        XJSAttribute: 'XJSAttribute',
        XJSSpreadAttribute: 'XJSSpreadAttribute',
        XJSText: 'XJSText',
        YieldExpression: 'YieldExpression',
        AwaitExpression: 'AwaitExpression'
    };

    PropertyKind = {
        Data: 1,
        Get: 2,
        Set: 4
    };

    ClassPropertyType = {
        'static': 'static',
        prototype: 'prototype'
    };

    // Error messages should be identical to V8.
    Messages = {
        UnexpectedToken:  'Unexpected token %0',
        UnexpectedNumber:  'Unexpected number',
        UnexpectedString:  'Unexpected string',
        UnexpectedIdentifier:  'Unexpected identifier',
        UnexpectedReserved:  'Unexpected reserved word',
        UnexpectedTemplate:  'Unexpected quasi %0',
        UnexpectedEOS:  'Unexpected end of input',
        NewlineAfterThrow:  'Illegal newline after throw',
        InvalidRegExp: 'Invalid regular expression',
        UnterminatedRegExp:  'Invalid regular expression: missing /',
        InvalidLHSInAssignment:  'Invalid left-hand side in assignment',
        InvalidLHSInFormalsList:  'Invalid left-hand side in formals list',
        InvalidLHSInForIn:  'Invalid left-hand side in for-in',
        MultipleDefaultsInSwitch: 'More than one default clause in switch statement',
        NoCatchOrFinally:  'Missing catch or finally after try',
        UnknownLabel: 'Undefined label \'%0\'',
        Redeclaration: '%0 \'%1\' has already been declared',
        IllegalContinue: 'Illegal continue statement',
        IllegalBreak: 'Illegal break statement',
        IllegalDuplicateClassProperty: 'Illegal duplicate property in class definition',
        IllegalReturn: 'Illegal return statement',
        IllegalSpread: 'Illegal spread element',
        StrictModeWith:  'Strict mode code may not include a with statement',
        StrictCatchVariable:  'Catch variable may not be eval or arguments in strict mode',
        StrictVarName:  'Variable name may not be eval or arguments in strict mode',
        StrictParamName:  'Parameter name eval or arguments is not allowed in strict mode',
        StrictParamDupe: 'Strict mode function may not have duplicate parameter names',
        ParameterAfterRestParameter: 'Rest parameter must be final parameter of an argument list',
        DefaultRestParameter: 'Rest parameter can not have a default value',
        ElementAfterSpreadElement: 'Spread must be the final element of an element list',
        PropertyAfterSpreadProperty: 'A rest property must be the final property of an object literal',
        ObjectPatternAsRestParameter: 'Invalid rest parameter',
        ObjectPatternAsSpread: 'Invalid spread argument',
        StrictFunctionName:  'Function name may not be eval or arguments in strict mode',
        StrictOctalLiteral:  'Octal literals are not allowed in strict mode.',
        StrictDelete:  'Delete of an unqualified identifier in strict mode.',
        StrictDuplicateProperty:  'Duplicate data property in object literal not allowed in strict mode',
        AccessorDataProperty:  'Object literal may not have data and accessor property with the same name',
        AccessorGetSet:  'Object literal may not have multiple get/set accessors with the same name',
        StrictLHSAssignment:  'Assignment to eval or arguments is not allowed in strict mode',
        StrictLHSPostfix:  'Postfix increment/decrement may not have eval or arguments operand in strict mode',
        StrictLHSPrefix:  'Prefix increment/decrement may not have eval or arguments operand in strict mode',
        StrictReservedWord:  'Use of future reserved word in strict mode',
        MissingFromClause: 'Missing from clause',
        NoAsAfterImportNamespace: 'Missing as after import *',
        InvalidModuleSpecifier: 'Invalid module specifier',
        NoUnintializedConst: 'Const must be initialized',
        ComprehensionRequiresBlock: 'Comprehension must have at least one block',
        ComprehensionError:  'Comprehension Error',
        EachNotAllowed:  'Each is not supported',
        InvalidXJSAttributeValue: 'XJS value should be either an expression or a quoted XJS text',
        ExpectedXJSClosingTag: 'Expected corresponding XJS closing tag for %0',
        AdjacentXJSElements: 'Adjacent XJS elements must be wrapped in an enclosing tag',
        ConfusedAboutFunctionType: 'Unexpected token =>. It looks like ' +
            'you are trying to write a function type, but you ended up ' +
            'writing a grouped type followed by an =>, which is a syntax ' +
            'error. Remember, function type parameters are named so function ' +
            'types look like (name1: type1, name2: type2) => returnType. You ' +
            'probably wrote (type1) => returnType'
    };

    // See also tools/generate-unicode-regex.py.
    Regex = {
        NonAsciiIdentifierStart: new RegExp('[\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0370-\u0374\u0376\u0377\u037a-\u037d\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u048a-\u0527\u0531-\u0556\u0559\u0561-\u0587\u05d0-\u05ea\u05f0-\u05f2\u0620-\u064a\u066e\u066f\u0671-\u06d3\u06d5\u06e5\u06e6\u06ee\u06ef\u06fa-\u06fc\u06ff\u0710\u0712-\u072f\u074d-\u07a5\u07b1\u07ca-\u07ea\u07f4\u07f5\u07fa\u0800-\u0815\u081a\u0824\u0828\u0840-\u0858\u08a0\u08a2-\u08ac\u0904-\u0939\u093d\u0950\u0958-\u0961\u0971-\u0977\u0979-\u097f\u0985-\u098c\u098f\u0990\u0993-\u09a8\u09aa-\u09b0\u09b2\u09b6-\u09b9\u09bd\u09ce\u09dc\u09dd\u09df-\u09e1\u09f0\u09f1\u0a05-\u0a0a\u0a0f\u0a10\u0a13-\u0a28\u0a2a-\u0a30\u0a32\u0a33\u0a35\u0a36\u0a38\u0a39\u0a59-\u0a5c\u0a5e\u0a72-\u0a74\u0a85-\u0a8d\u0a8f-\u0a91\u0a93-\u0aa8\u0aaa-\u0ab0\u0ab2\u0ab3\u0ab5-\u0ab9\u0abd\u0ad0\u0ae0\u0ae1\u0b05-\u0b0c\u0b0f\u0b10\u0b13-\u0b28\u0b2a-\u0b30\u0b32\u0b33\u0b35-\u0b39\u0b3d\u0b5c\u0b5d\u0b5f-\u0b61\u0b71\u0b83\u0b85-\u0b8a\u0b8e-\u0b90\u0b92-\u0b95\u0b99\u0b9a\u0b9c\u0b9e\u0b9f\u0ba3\u0ba4\u0ba8-\u0baa\u0bae-\u0bb9\u0bd0\u0c05-\u0c0c\u0c0e-\u0c10\u0c12-\u0c28\u0c2a-\u0c33\u0c35-\u0c39\u0c3d\u0c58\u0c59\u0c60\u0c61\u0c85-\u0c8c\u0c8e-\u0c90\u0c92-\u0ca8\u0caa-\u0cb3\u0cb5-\u0cb9\u0cbd\u0cde\u0ce0\u0ce1\u0cf1\u0cf2\u0d05-\u0d0c\u0d0e-\u0d10\u0d12-\u0d3a\u0d3d\u0d4e\u0d60\u0d61\u0d7a-\u0d7f\u0d85-\u0d96\u0d9a-\u0db1\u0db3-\u0dbb\u0dbd\u0dc0-\u0dc6\u0e01-\u0e30\u0e32\u0e33\u0e40-\u0e46\u0e81\u0e82\u0e84\u0e87\u0e88\u0e8a\u0e8d\u0e94-\u0e97\u0e99-\u0e9f\u0ea1-\u0ea3\u0ea5\u0ea7\u0eaa\u0eab\u0ead-\u0eb0\u0eb2\u0eb3\u0ebd\u0ec0-\u0ec4\u0ec6\u0edc-\u0edf\u0f00\u0f40-\u0f47\u0f49-\u0f6c\u0f88-\u0f8c\u1000-\u102a\u103f\u1050-\u1055\u105a-\u105d\u1061\u1065\u1066\u106e-\u1070\u1075-\u1081\u108e\u10a0-\u10c5\u10c7\u10cd\u10d0-\u10fa\u10fc-\u1248\u124a-\u124d\u1250-\u1256\u1258\u125a-\u125d\u1260-\u1288\u128a-\u128d\u1290-\u12b0\u12b2-\u12b5\u12b8-\u12be\u12c0\u12c2-\u12c5\u12c8-\u12d6\u12d8-\u1310\u1312-\u1315\u1318-\u135a\u1380-\u138f\u13a0-\u13f4\u1401-\u166c\u166f-\u167f\u1681-\u169a\u16a0-\u16ea\u16ee-\u16f0\u1700-\u170c\u170e-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176c\u176e-\u1770\u1780-\u17b3\u17d7\u17dc\u1820-\u1877\u1880-\u18a8\u18aa\u18b0-\u18f5\u1900-\u191c\u1950-\u196d\u1970-\u1974\u1980-\u19ab\u19c1-\u19c7\u1a00-\u1a16\u1a20-\u1a54\u1aa7\u1b05-\u1b33\u1b45-\u1b4b\u1b83-\u1ba0\u1bae\u1baf\u1bba-\u1be5\u1c00-\u1c23\u1c4d-\u1c4f\u1c5a-\u1c7d\u1ce9-\u1cec\u1cee-\u1cf1\u1cf5\u1cf6\u1d00-\u1dbf\u1e00-\u1f15\u1f18-\u1f1d\u1f20-\u1f45\u1f48-\u1f4d\u1f50-\u1f57\u1f59\u1f5b\u1f5d\u1f5f-\u1f7d\u1f80-\u1fb4\u1fb6-\u1fbc\u1fbe\u1fc2-\u1fc4\u1fc6-\u1fcc\u1fd0-\u1fd3\u1fd6-\u1fdb\u1fe0-\u1fec\u1ff2-\u1ff4\u1ff6-\u1ffc\u2071\u207f\u2090-\u209c\u2102\u2107\u210a-\u2113\u2115\u2119-\u211d\u2124\u2126\u2128\u212a-\u212d\u212f-\u2139\u213c-\u213f\u2145-\u2149\u214e\u2160-\u2188\u2c00-\u2c2e\u2c30-\u2c5e\u2c60-\u2ce4\u2ceb-\u2cee\u2cf2\u2cf3\u2d00-\u2d25\u2d27\u2d2d\u2d30-\u2d67\u2d6f\u2d80-\u2d96\u2da0-\u2da6\u2da8-\u2dae\u2db0-\u2db6\u2db8-\u2dbe\u2dc0-\u2dc6\u2dc8-\u2dce\u2dd0-\u2dd6\u2dd8-\u2dde\u2e2f\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303c\u3041-\u3096\u309d-\u309f\u30a1-\u30fa\u30fc-\u30ff\u3105-\u312d\u3131-\u318e\u31a0-\u31ba\u31f0-\u31ff\u3400-\u4db5\u4e00-\u9fcc\ua000-\ua48c\ua4d0-\ua4fd\ua500-\ua60c\ua610-\ua61f\ua62a\ua62b\ua640-\ua66e\ua67f-\ua697\ua6a0-\ua6ef\ua717-\ua71f\ua722-\ua788\ua78b-\ua78e\ua790-\ua793\ua7a0-\ua7aa\ua7f8-\ua801\ua803-\ua805\ua807-\ua80a\ua80c-\ua822\ua840-\ua873\ua882-\ua8b3\ua8f2-\ua8f7\ua8fb\ua90a-\ua925\ua930-\ua946\ua960-\ua97c\ua984-\ua9b2\ua9cf\uaa00-\uaa28\uaa40-\uaa42\uaa44-\uaa4b\uaa60-\uaa76\uaa7a\uaa80-\uaaaf\uaab1\uaab5\uaab6\uaab9-\uaabd\uaac0\uaac2\uaadb-\uaadd\uaae0-\uaaea\uaaf2-\uaaf4\uab01-\uab06\uab09-\uab0e\uab11-\uab16\uab20-\uab26\uab28-\uab2e\uabc0-\uabe2\uac00-\ud7a3\ud7b0-\ud7c6\ud7cb-\ud7fb\uf900-\ufa6d\ufa70-\ufad9\ufb00-\ufb06\ufb13-\ufb17\ufb1d\ufb1f-\ufb28\ufb2a-\ufb36\ufb38-\ufb3c\ufb3e\ufb40\ufb41\ufb43\ufb44\ufb46-\ufbb1\ufbd3-\ufd3d\ufd50-\ufd8f\ufd92-\ufdc7\ufdf0-\ufdfb\ufe70-\ufe74\ufe76-\ufefc\uff21-\uff3a\uff41-\uff5a\uff66-\uffbe\uffc2-\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc]'),
        NonAsciiIdentifierPart: new 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\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc]'),
        LeadingZeros: new RegExp('^0+(?!$)')
    };

    // Ensure the condition is true, otherwise throw an error.
    // This is only to have a better contract semantic, i.e. another safety net
    // to catch a logic error. The condition shall be fulfilled in normal case.
    // Do NOT use this to enforce a certain condition on any user input.

    function assert(condition, message) {
        if (!condition) {
            throw new Error('ASSERT: ' + message);
        }
    }

    function isDecimalDigit(ch) {
        return (ch >= 48 && ch <= 57);   // 0..9
    }

    function isHexDigit(ch) {
        return '0123456789abcdefABCDEF'.indexOf(ch) >= 0;
    }

    function isOctalDigit(ch) {
        return '01234567'.indexOf(ch) >= 0;
    }


    // 7.2 White Space

    function isWhiteSpace(ch) {
        return (ch === 32) ||  // space
            (ch === 9) ||      // tab
            (ch === 0xB) ||
            (ch === 0xC) ||
            (ch === 0xA0) ||
            (ch >= 0x1680 && '\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\uFEFF'.indexOf(String.fromCharCode(ch)) > 0);
    }

    // 7.3 Line Terminators

    function isLineTerminator(ch) {
        return (ch === 10) || (ch === 13) || (ch === 0x2028) || (ch === 0x2029);
    }

    // 7.6 Identifier Names and Identifiers

    function isIdentifierStart(ch) {
        return (ch === 36) || (ch === 95) ||  // $ (dollar) and _ (underscore)
            (ch >= 65 && ch <= 90) ||         // A..Z
            (ch >= 97 && ch <= 122) ||        // a..z
            (ch === 92) ||                    // \ (backslash)
            ((ch >= 0x80) && Regex.NonAsciiIdentifierStart.test(String.fromCharCode(ch)));
    }

    function isIdentifierPart(ch) {
        return (ch === 36) || (ch === 95) ||  // $ (dollar) and _ (underscore)
            (ch >= 65 && ch <= 90) ||         // A..Z
            (ch >= 97 && ch <= 122) ||        // a..z
            (ch >= 48 && ch <= 57) ||         // 0..9
            (ch === 92) ||                    // \ (backslash)
            ((ch >= 0x80) && Regex.NonAsciiIdentifierPart.test(String.fromCharCode(ch)));
    }

    // 7.6.1.2 Future Reserved Words

    function isFutureReservedWord(id) {
        switch (id) {
        case 'class':
        case 'enum':
        case 'export':
        case 'extends':
        case 'import':
        case 'super':
            return true;
        default:
            return false;
        }
    }

    function isStrictModeReservedWord(id) {
        switch (id) {
        case 'implements':
        case 'interface':
        case 'package':
        case 'private':
        case 'protected':
        case 'public':
        case 'static':
        case 'yield':
        case 'let':
            return true;
        default:
            return false;
        }
    }

    function isRestrictedWord(id) {
        return id === 'eval' || id === 'arguments';
    }

    // 7.6.1.1 Keywords

    function isKeyword(id) {
        if (strict && isStrictModeReservedWord(id)) {
            return true;
        }

        // 'const' is specialized as Keyword in V8.
        // 'yield' is only treated as a keyword in strict mode.
        // 'let' is for compatiblity with SpiderMonkey and ES.next.
        // Some others are from future reserved words.

        switch (id.length) {
        case 2:
            return (id === 'if') || (id === 'in') || (id === 'do');
        case 3:
            return (id === 'var') || (id === 'for') || (id === 'new') ||
                (id === 'try') || (id === 'let');
        case 4:
            return (id === 'this') || (id === 'else') || (id === 'case') ||
                (id === 'void') || (id === 'with') || (id === 'enum');
        case 5:
            return (id === 'while') || (id === 'break') || (id === 'catch') ||
                (id === 'throw') || (id === 'const') ||
                (id === 'class') || (id === 'super');
        case 6:
            return (id === 'return') || (id === 'typeof') || (id === 'delete') ||
                (id === 'switch') || (id === 'export') || (id === 'import');
        case 7:
            return (id === 'default') || (id === 'finally') || (id === 'extends');
        case 8:
            return (id === 'function') || (id === 'continue') || (id === 'debugger');
        case 10:
            return (id === 'instanceof');
        default:
            return false;
        }
    }

    // 7.4 Comments

    function skipComment() {
        var ch, blockComment, lineComment;

        blockComment = false;
        lineComment = false;

        while (index < length) {
            ch = source.charCodeAt(index);

            if (lineComment) {
                ++index;
                if (isLineTerminator(ch)) {
                    lineComment = false;
                    if (ch === 13 && source.charCodeAt(index) === 10) {
                        ++index;
                    }
                    ++lineNumber;
                    lineStart = index;
                }
            } else if (blockComment) {
                if (isLineTerminator(ch)) {
                    if (ch === 13) {
                        ++index;
                    }
                    if (ch !== 13 || source.charCodeAt(index) === 10) {
                        ++lineNumber;
                        ++index;
                        lineStart = index;
                        if (index >= length) {
                            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
                        }
                    }
                } else {
                    ch = source.charCodeAt(index++);
                    if (index >= length) {
                        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
                    }
                    // Block comment ends with '*/' (char #42, char #47).
                    if (ch === 42) {
                        ch = source.charCodeAt(index);
                        if (ch === 47) {
                            ++index;
                            blockComment = false;
                        }
                    }
                }
            } else if (ch === 47) {
                ch = source.charCodeAt(index + 1);
                // Line comment starts with '//' (char #47, char #47).
                if (ch === 47) {
                    index += 2;
                    lineComment = true;
                } else if (ch === 42) {
                    // Block comment starts with '/*' (char #47, char #42).
                    index += 2;
                    blockComment = true;
                    if (index >= length) {
                        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
                    }
                } else {
                    break;
                }
            } else if (isWhiteSpace(ch)) {
                ++index;
            } else if (isLineTerminator(ch)) {
                ++index;
                if (ch === 13 && source.charCodeAt(index) === 10) {
                    ++index;
                }
                ++lineNumber;
                lineStart = index;
            } else {
                break;
            }
        }
    }

    function scanHexEscape(prefix) {
        var i, len, ch, code = 0;

        len = (prefix === 'u') ? 4 : 2;
        for (i = 0; i < len; ++i) {
            if (index < length && isHexDigit(source[index])) {
                ch = source[index++];
                code = code * 16 + '0123456789abcdef'.indexOf(ch.toLowerCase());
            } else {
                return '';
            }
        }
        return String.fromCharCode(code);
    }

    function scanUnicodeCodePointEscape() {
        var ch, code, cu1, cu2;

        ch = source[index];
        code = 0;

        // At least, one hex digit is required.
        if (ch === '}') {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        while (index < length) {
            ch = source[index++];
            if (!isHexDigit(ch)) {
                break;
            }
            code = code * 16 + '0123456789abcdef'.indexOf(ch.toLowerCase());
        }

        if (code > 0x10FFFF || ch !== '}') {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        // UTF-16 Encoding
        if (code <= 0xFFFF) {
            return String.fromCharCode(code);
        }
        cu1 = ((code - 0x10000) >> 10) + 0xD800;
        cu2 = ((code - 0x10000) & 1023) + 0xDC00;
        return String.fromCharCode(cu1, cu2);
    }

    function getEscapedIdentifier() {
        var ch, id;

        ch = source.charCodeAt(index++);
        id = String.fromCharCode(ch);

        // '\u' (char #92, char #117) denotes an escaped character.
        if (ch === 92) {
            if (source.charCodeAt(index) !== 117) {
                throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
            }
            ++index;
            ch = scanHexEscape('u');
            if (!ch || ch === '\\' || !isIdentifierStart(ch.charCodeAt(0))) {
                throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
            }
            id = ch;
        }

        while (index < length) {
            ch = source.charCodeAt(index);
            if (!isIdentifierPart(ch)) {
                break;
            }
            ++index;
            id += String.fromCharCode(ch);

            // '\u' (char #92, char #117) denotes an escaped character.
            if (ch === 92) {
                id = id.substr(0, id.length - 1);
                if (source.charCodeAt(index) !== 117) {
                    throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
                }
                ++index;
                ch = scanHexEscape('u');
                if (!ch || ch === '\\' || !isIdentifierPart(ch.charCodeAt(0))) {
                    throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
                }
                id += ch;
            }
        }

        return id;
    }

    function getIdentifier() {
        var start, ch;

        start = index++;
        while (index < length) {
            ch = source.charCodeAt(index);
            if (ch === 92) {
                // Blackslash (char #92) marks Unicode escape sequence.
                index = start;
                return getEscapedIdentifier();
            }
            if (isIdentifierPart(ch)) {
                ++index;
            } else {
                break;
            }
        }

        return source.slice(start, index);
    }

    function scanIdentifier() {
        var start, id, type;

        start = index;

        // Backslash (char #92) starts an escaped character.
        id = (source.charCodeAt(index) === 92) ? getEscapedIdentifier() : getIdentifier();

        // There is no keyword or literal with only one character.
        // Thus, it must be an identifier.
        if (id.length === 1) {
            type = Token.Identifier;
        } else if (isKeyword(id)) {
            type = Token.Keyword;
        } else if (id === 'null') {
            type = Token.NullLiteral;
        } else if (id === 'true' || id === 'false') {
            type = Token.BooleanLiteral;
        } else {
            type = Token.Identifier;
        }

        return {
            type: type,
            value: id,
            lineNumber: lineNumber,
            lineStart: lineStart,
            range: [start, index]
        };
    }


    // 7.7 Punctuators

    function scanPunctuator() {
        var start = index,
            code = source.charCodeAt(index),
            code2,
            ch1 = source[index],
            ch2,
            ch3,
            ch4;

        switch (code) {
        // Check for most common single-character punctuators.
        case 40:   // ( open bracket
        case 41:   // ) close bracket
        case 59:   // ; semicolon
        case 44:   // , comma
        case 123:  // { open curly brace
        case 125:  // } close curly brace
        case 91:   // [
        case 93:   // ]
        case 58:   // :
        case 63:   // ?
        case 126:  // ~
            ++index;
            if (extra.tokenize) {
                if (code === 40) {
                    extra.openParenToken = extra.tokens.length;
                } else if (code === 123) {
                    extra.openCurlyToken = extra.tokens.length;
                }
            }
            return {
                type: Token.Punctuator,
                value: String.fromCharCode(code),
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };

        default:
            code2 = source.charCodeAt(index + 1);

            // '=' (char #61) marks an assignment or comparison operator.
            if (code2 === 61) {
                switch (code) {
                case 37:  // %
                case 38:  // &
                case 42:  // *:
                case 43:  // +
                case 45:  // -
                case 47:  // /
                case 60:  // <
                case 62:  // >
                case 94:  // ^
                case 124: // |
                    index += 2;
                    return {
                        type: Token.Punctuator,
                        value: String.fromCharCode(code) + String.fromCharCode(code2),
                        lineNumber: lineNumber,
                        lineStart: lineStart,
                        range: [start, index]
                    };

                case 33: // !
                case 61: // =
                    index += 2;

                    // !== and ===
                    if (source.charCodeAt(index) === 61) {
                        ++index;
                    }
                    return {
                        type: Token.Punctuator,
                        value: source.slice(start, index),
                        lineNumber: lineNumber,
                        lineStart: lineStart,
                        range: [start, index]
                    };
                default:
                    break;
                }
            }
            break;
        }

        // Peek more characters.

        ch2 = source[index + 1];
        ch3 = source[index + 2];
        ch4 = source[index + 3];

        // 4-character punctuator: >>>=

        if (ch1 === '>' && ch2 === '>' && ch3 === '>') {
            if (ch4 === '=') {
                index += 4;
                return {
                    type: Token.Punctuator,
                    value: '>>>=',
                    lineNumber: lineNumber,
                    lineStart: lineStart,
                    range: [start, index]
                };
            }
        }

        // 3-character punctuators: === !== >>> <<= >>=

        if (ch1 === '>' && ch2 === '>' && ch3 === '>') {
            index += 3;
            return {
                type: Token.Punctuator,
                value: '>>>',
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }

        if (ch1 === '<' && ch2 === '<' && ch3 === '=') {
            index += 3;
            return {
                type: Token.Punctuator,
                value: '<<=',
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }

        if (ch1 === '>' && ch2 === '>' && ch3 === '=') {
            index += 3;
            return {
                type: Token.Punctuator,
                value: '>>=',
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }

        if (ch1 === '.' && ch2 === '.' && ch3 === '.') {
            index += 3;
            return {
                type: Token.Punctuator,
                value: '...',
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }

        // Other 2-character punctuators: ++ -- << >> && ||

        // Don't match these tokens if we're in a type, since they never can
        // occur and can mess up types like Map<string, Array<string>>
        if (ch1 === ch2 && ('+-<>&|'.indexOf(ch1) >= 0) && !state.inType) {
            index += 2;
            return {
                type: Token.Punctuator,
                value: ch1 + ch2,
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }

        if (ch1 === '=' && ch2 === '>') {
            index += 2;
            return {
                type: Token.Punctuator,
                value: '=>',
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }

        if ('<>=!+-*%&|^/'.indexOf(ch1) >= 0) {
            ++index;
            return {
                type: Token.Punctuator,
                value: ch1,
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }

        if (ch1 === '.') {
            ++index;
            return {
                type: Token.Punctuator,
                value: ch1,
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }

        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
    }

    // 7.8.3 Numeric Literals

    function scanHexLiteral(start) {
        var number = '';

        while (index < length) {
            if (!isHexDigit(source[index])) {
                break;
            }
            number += source[index++];
        }

        if (number.length === 0) {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        if (isIdentifierStart(source.charCodeAt(index))) {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        return {
            type: Token.NumericLiteral,
            value: parseInt('0x' + number, 16),
            lineNumber: lineNumber,
            lineStart: lineStart,
            range: [start, index]
        };
    }

    function scanOctalLiteral(prefix, start) {
        var number, octal;

        if (isOctalDigit(prefix)) {
            octal = true;
            number = '0' + source[index++];
        } else {
            octal = false;
            ++index;
            number = '';
        }

        while (index < length) {
            if (!isOctalDigit(source[index])) {
                break;
            }
            number += source[index++];
        }

        if (!octal && number.length === 0) {
            // only 0o or 0O
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        if (isIdentifierStart(source.charCodeAt(index)) || isDecimalDigit(source.charCodeAt(index))) {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        return {
            type: Token.NumericLiteral,
            value: parseInt(number, 8),
            octal: octal,
            lineNumber: lineNumber,
            lineStart: lineStart,
            range: [start, index]
        };
    }

    function scanNumericLiteral() {
        var number, start, ch, octal;

        ch = source[index];
        assert(isDecimalDigit(ch.charCodeAt(0)) || (ch === '.'),
            'Numeric literal must start with a decimal digit or a decimal point');

        start = index;
        number = '';
        if (ch !== '.') {
            number = source[index++];
            ch = source[index];

            // Hex number starts with '0x'.
            // Octal number starts with '0'.
            // Octal number in ES6 starts with '0o'.
            // Binary number in ES6 starts with '0b'.
            if (number === '0') {
                if (ch === 'x' || ch === 'X') {
                    ++index;
                    return scanHexLiteral(start);
                }
                if (ch === 'b' || ch === 'B') {
                    ++index;
                    number = '';

                    while (index < length) {
                        ch = source[index];
                        if (ch !== '0' && ch !== '1') {
                            break;
                        }
                        number += source[index++];
                    }

                    if (number.length === 0) {
                        // only 0b or 0B
                        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
                    }

                    if (index < length) {
                        ch = source.charCodeAt(index);
                        if (isIdentifierStart(ch) || isDecimalDigit(ch)) {
                            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
                        }
                    }
                    return {
                        type: Token.NumericLiteral,
                        value: parseInt(number, 2),
                        lineNumber: lineNumber,
                        lineStart: lineStart,
                        range: [start, index]
                    };
                }
                if (ch === 'o' || ch === 'O' || isOctalDigit(ch)) {
                    return scanOctalLiteral(ch, start);
                }
                // decimal number starts with '0' such as '09' is illegal.
                if (ch && isDecimalDigit(ch.charCodeAt(0))) {
                    throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
                }
            }

            while (isDecimalDigit(source.charCodeAt(index))) {
                number += source[index++];
            }
            ch = source[index];
        }

        if (ch === '.') {
            number += source[index++];
            while (isDecimalDigit(source.charCodeAt(index))) {
                number += source[index++];
            }
            ch = source[index];
        }

        if (ch === 'e' || ch === 'E') {
            number += source[index++];

            ch = source[index];
            if (ch === '+' || ch === '-') {
                number += source[index++];
            }
            if (isDecimalDigit(source.charCodeAt(index))) {
                while (isDecimalDigit(source.charCodeAt(index))) {
                    number += source[index++];
                }
            } else {
                throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
            }
        }

        if (isIdentifierStart(source.charCodeAt(index))) {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        return {
            type: Token.NumericLiteral,
            value: parseFloat(number),
            lineNumber: lineNumber,
            lineStart: lineStart,
            range: [start, index]
        };
    }

    // 7.8.4 String Literals

    function scanStringLiteral() {
        var str = '', quote, start, ch, code, unescaped, restore, octal = false;

        quote = source[index];
        assert((quote === '\'' || quote === '"'),
            'String literal must starts with a quote');

        start = index;
        ++index;

        while (index < length) {
            ch = source[index++];

            if (ch === quote) {
                quote = '';
                break;
            } else if (ch === '\\') {
                ch = source[index++];
                if (!ch || !isLineTerminator(ch.charCodeAt(0))) {
                    switch (ch) {
                    case 'n':
                        str += '\n';
                        break;
                    case 'r':
                        str += '\r';
                        break;
                    case 't':
                        str += '\t';
                        break;
                    case 'u':
                    case 'x':
                        if (source[index] === '{') {
                            ++index;
                            str += scanUnicodeCodePointEscape();
                        } else {
                            restore = index;
                            unescaped = scanHexEscape(ch);
                            if (unescaped) {
                                str += unescaped;
                            } else {
                                index = restore;
                                str += ch;
                            }
                        }
                        break;
                    case 'b':
                        str += '\b';
                        break;
                    case 'f':
                        str += '\f';
                        break;
                    case 'v':
                        str += '\x0B';
                        break;

                    default:
                        if (isOctalDigit(ch)) {
                            code = '01234567'.indexOf(ch);

                            // \0 is not octal escape sequence
                            if (code !== 0) {
                                octal = true;
                            }

                            if (index < length && isOctalDigit(source[index])) {
                                octal = true;
                                code = code * 8 + '01234567'.indexOf(source[index++]);

                                // 3 digits are only allowed when string starts
                                // with 0, 1, 2, 3
                                if ('0123'.indexOf(ch) >= 0 &&
                                        index < length &&
                                        isOctalDigit(source[index])) {
                                    code = code * 8 + '01234567'.indexOf(source[index++]);
                                }
                            }
                            str += String.fromCharCode(code);
                        } else {
                            str += ch;
                        }
                        break;
                    }
                } else {
                    ++lineNumber;
                    if (ch ===  '\r' && source[index] === '\n') {
                        ++index;
                    }
                    lineStart = index;
                }
            } else if (isLineTerminator(ch.charCodeAt(0))) {
                break;
            } else {
                str += ch;
            }
        }

        if (quote !== '') {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        return {
            type: Token.StringLiteral,
            value: str,
            octal: octal,
            lineNumber: lineNumber,
            lineStart: lineStart,
            range: [start, index]
        };
    }

    function scanTemplate() {
        var cooked = '', ch, start, terminated, tail, restore, unescaped, code, octal;

        terminated = false;
        tail = false;
        start = index;

        ++index;

        while (index < length) {
            ch = source[index++];
            if (ch === '`') {
                tail = true;
                terminated = true;
                break;
            } else if (ch === '$') {
                if (source[index] === '{') {
                    ++index;
                    terminated = true;
                    break;
                }
                cooked += ch;
            } else if (ch === '\\') {
                ch = source[index++];
                if (!isLineTerminator(ch.charCodeAt(0))) {
                    switch (ch) {
                    case 'n':
                        cooked += '\n';
                        break;
                    case 'r':
                        cooked += '\r';
                        break;
                    case 't':
                        cooked += '\t';
                        break;
                    case 'u':
                    case 'x':
                        if (source[index] === '{') {
                            ++index;
                            cooked += scanUnicodeCodePointEscape();
                        } else {
                            restore = index;
                            unescaped = scanHexEscape(ch);
                            if (unescaped) {
                                cooked += unescaped;
                            } else {
                                index = restore;
                                cooked += ch;
                            }
                        }
                        break;
                    case 'b':
                        cooked += '\b';
                        break;
                    case 'f':
                        cooked += '\f';
                        break;
                    case 'v':
                        cooked += '\v';
                        break;

                    default:
                        if (isOctalDigit(ch)) {
                            code = '01234567'.indexOf(ch);

                            // \0 is not octal escape sequence
                            if (code !== 0) {
                                octal = true;
                            }

                            if (index < length && isOctalDigit(source[index])) {
                                octal = true;
                                code = code * 8 + '01234567'.indexOf(source[index++]);

                                // 3 digits are only allowed when string starts
                                // with 0, 1, 2, 3
                                if ('0123'.indexOf(ch) >= 0 &&
                                        index < length &&
                                        isOctalDigit(source[index])) {
                                    code = code * 8 + '01234567'.indexOf(source[index++]);
                                }
                            }
                            cooked += String.fromCharCode(code);
                        } else {
                            cooked += ch;
                        }
                        break;
                    }
                } else {
                    ++lineNumber;
                    if (ch ===  '\r' && source[index] === '\n') {
                        ++index;
                    }
                    lineStart = index;
                }
            } else if (isLineTerminator(ch.charCodeAt(0))) {
                ++lineNumber;
                if (ch ===  '\r' && source[index] === '\n') {
                    ++index;
                }
                lineStart = index;
                cooked += '\n';
            } else {
                cooked += ch;
            }
        }

        if (!terminated) {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        return {
            type: Token.Template,
            value: {
                cooked: cooked,
                raw: source.slice(start + 1, index - ((tail) ? 1 : 2))
            },
            tail: tail,
            octal: octal,
            lineNumber: lineNumber,
            lineStart: lineStart,
            range: [start, index]
        };
    }

    function scanTemplateElement(option) {
        var startsWith, template;

        lookahead = null;
        skipComment();

        startsWith = (option.head) ? '`' : '}';

        if (source[index] !== startsWith) {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        template = scanTemplate();

        peek();

        return template;
    }

    function scanRegExp() {
        var str, ch, start, pattern, flags, value, classMarker = false, restore, terminated = false, tmp;

        lookahead = null;
        skipComment();

        start = index;
        ch = source[index];
        assert(ch === '/', 'Regular expression literal must start with a slash');
        str = source[index++];

        while (index < length) {
            ch = source[index++];
            str += ch;
            if (classMarker) {
                if (ch === ']') {
                    classMarker = false;
                }
            } else {
                if (ch === '\\') {
                    ch = source[index++];
                    // ECMA-262 7.8.5
                    if (isLineTerminator(ch.charCodeAt(0))) {
                        throwError({}, Messages.UnterminatedRegExp);
                    }
                    str += ch;
                } else if (ch === '/') {
                    terminated = true;
                    break;
                } else if (ch === '[') {
                    classMarker = true;
                } else if (isLineTerminator(ch.charCodeAt(0))) {
                    throwError({}, Messages.UnterminatedRegExp);
                }
            }
        }

        if (!terminated) {
            throwError({}, Messages.UnterminatedRegExp);
        }

        // Exclude leading and trailing slash.
        pattern = str.substr(1, str.length - 2);

        flags = '';
        while (index < length) {
            ch = source[index];
            if (!isIdentifierPart(ch.charCodeAt(0))) {
                break;
            }

            ++index;
            if (ch === '\\' && index < length) {
                ch = source[index];
                if (ch === 'u') {
                    ++index;
                    restore = index;
                    ch = scanHexEscape('u');
                    if (ch) {
                        flags += ch;
                        for (str += '\\u'; restore < index; ++restore) {
                            str += source[restore];
                        }
                    } else {
                        index = restore;
                        flags += 'u';
                        str += '\\u';
                    }
                } else {
                    str += '\\';
                }
            } else {
                flags += ch;
                str += ch;
            }
        }

        tmp = pattern;
        if (flags.indexOf('u') >= 0) {
            // Replace each astral symbol and every Unicode code point
            // escape sequence that represents such a symbol with a single
            // ASCII symbol to avoid throwing on regular expressions that
            // are only valid in combination with the `/u` flag.
            tmp = tmp
                .replace(/\\u\{([0-9a-fA-F]{5,6})\}/g, 'x')
                .replace(/[\uD800-\uDBFF][\uDC00-\uDFFF]/g, 'x');
        }

        // First, detect invalid regular expressions.
        try {
            value = new RegExp(tmp);
        } catch (e) {
            throwError({}, Messages.InvalidRegExp);
        }

        // Return a regular expression object for this pattern-flag pair, or
        // `null` in case the current environment doesn't support the flags it
        // uses.
        try {
            value = new RegExp(pattern, flags);
        } catch (exception) {
            value = null;
        }

        peek();

        if (extra.tokenize) {
            return {
                type: Token.RegularExpression,
                value: value,
                regex: {
                    pattern: pattern,
                    flags: flags
                },
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }
        return {
            literal: str,
            value: value,
            regex: {
                pattern: pattern,
                flags: flags
            },
            range: [start, index]
        };
    }

    function isIdentifierName(token) {
        return token.type === Token.Identifier ||
            token.type === Token.Keyword ||
            token.type === Token.BooleanLiteral ||
            token.type === Token.NullLiteral;
    }

    function advanceSlash() {
        var prevToken,
            checkToken;
        // Using the following algorithm:
        // https://github.com/mozilla/sweet.js/wiki/design
        prevToken = extra.tokens[extra.tokens.length - 1];
        if (!prevToken) {
            // Nothing before that: it cannot be a division.
            return scanRegExp();
        }
        if (prevToken.type === 'Punctuator') {
            if (prevToken.value === ')') {
                checkToken = extra.tokens[extra.openParenToken - 1];
                if (checkToken &&
                        checkToken.type === 'Keyword' &&
                        (checkToken.value === 'if' ||
                         checkToken.value === 'while' ||
                         checkToken.value === 'for' ||
                         checkToken.value === 'with')) {
                    return scanRegExp();
                }
                return scanPunctuator();
            }
            if (prevToken.value === '}') {
                // Dividing a function by anything makes little sense,
                // but we have to check for that.
                if (extra.tokens[extra.openCurlyToken - 3] &&
                        extra.tokens[extra.openCurlyToken - 3].type === 'Keyword') {
                    // Anonymous function.
                    checkToken = extra.tokens[extra.openCurlyToken - 4];
                    if (!checkToken) {
                        return scanPunctuator();
                    }
                } else if (extra.tokens[extra.openCurlyToken - 4] &&
                        extra.tokens[extra.openCurlyToken - 4].type === 'Keyword') {
                    // Named function.
                    checkToken = extra.tokens[extra.openCurlyToken - 5];
                    if (!checkToken) {
                        return scanRegExp();
                    }
                } else {
                    return scanPunctuator();
                }
                // checkToken determines whether the function is
                // a declaration or an expression.
                if (FnExprTokens.indexOf(checkToken.value) >= 0) {
                    // It is an expression.
                    return scanPunctuator();
                }
                // It is a declaration.
                return scanRegExp();
            }
            return scanRegExp();
        }
        if (prevToken.type === 'Keyword') {
            return scanRegExp();
        }
        return scanPunctuator();
    }

    function advance() {
        var ch;

        if (!state.inXJSChild) {
            skipComment();
        }

        if (index >= length) {
            return {
                type: Token.EOF,
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [index, index]
            };
        }

        if (state.inXJSChild) {
            return advanceXJSChild();
        }

        ch = source.charCodeAt(index);

        // Very common: ( and ) and ;
        if (ch === 40 || ch === 41 || ch === 58) {
            return scanPunctuator();
        }

        // String literal starts with single quote (#39) or double quote (#34).
        if (ch === 39 || ch === 34) {
            if (state.inXJSTag) {
                return scanXJSStringLiteral();
            }
            return scanStringLiteral();
        }

        if (state.inXJSTag && isXJSIdentifierStart(ch)) {
            return scanXJSIdentifier();
        }

        if (ch === 96) {
            return scanTemplate();
        }
        if (isIdentifierStart(ch)) {
            return scanIdentifier();
        }

        // Dot (.) char #46 can also start a floating-point number, hence the need
        // to check the next character.
        if (ch === 46) {
            if (isDecimalDigit(source.charCodeAt(index + 1))) {
                return scanNumericLiteral();
            }
            return scanPunctuator();
        }

        if (isDecimalDigit(ch)) {
            return scanNumericLiteral();
        }

        // Slash (/) char #47 can also start a regex.
        if (extra.tokenize && ch === 47) {
            return advanceSlash();
        }

        return scanPunctuator();
    }

    function lex() {
        var token;

        token = lookahead;
        index = token.range[1];
        lineNumber = token.lineNumber;
        lineStart = token.lineStart;

        lookahead = advance();

        index = token.range[1];
        lineNumber = token.lineNumber;
        lineStart = token.lineStart;

        return token;
    }

    function peek() {
        var pos, line, start;

        pos = index;
        line = lineNumber;
        start = lineStart;
        lookahead = advance();
        index = pos;
        lineNumber = line;
        lineStart = start;
    }

    function lookahead2() {
        var adv, pos, line, start, result;

        // If we are collecting the tokens, don't grab the next one yet.
        adv = (typeof extra.advance === 'function') ? extra.advance : advance;

        pos = index;
        line = lineNumber;
        start = lineStart;

        // Scan for the next immediate token.
        if (lookahead === null) {
            lookahead = adv();
        }
        index = lookahead.range[1];
        lineNumber = lookahead.lineNumber;
        lineStart = lookahead.lineStart;

        // Grab the token right after.
        result = adv();
        index = pos;
        lineNumber = line;
        lineStart = start;

        return result;
    }

    function rewind(token) {
        index = token.range[0];
        lineNumber = token.lineNumber;
        lineStart = token.lineStart;
        lookahead = token;
    }

    function markerCreate() {
        if (!extra.loc && !extra.range) {
            return undefined;
        }
        skipComment();
        return {offset: index, line: lineNumber, col: index - lineStart};
    }

    function markerCreatePreserveWhitespace() {
        if (!extra.loc && !extra.range) {
            return undefined;
        }
        return {offset: index, line: lineNumber, col: index - lineStart};
    }

    function processComment(node) {
        var lastChild,
            trailingComments,
            bottomRight = extra.bottomRightStack,
            last = bottomRight[bottomRight.length - 1];

        if (node.type === Syntax.Program) {
            if (node.body.length > 0) {
                return;
            }
        }

        if (extra.trailingComments.length > 0) {
            if (extra.trailingComments[0].range[0] >= node.range[1]) {
                trailingComments = extra.trailingComments;
                extra.trailingComments = [];
            } else {
                extra.trailingComments.length = 0;
            }
        } else {
            if (last && last.trailingComments && last.trailingComments[0].range[0] >= node.range[1]) {
                trailingComments = last.trailingComments;
                delete last.trailingComments;
            }
        }

        // Eating the stack.
        if (last) {
            while (last && last.range[0] >= node.range[0]) {
                lastChild = last;
                last = bottomRight.pop();
            }
        }

        if (lastChild) {
            if (lastChild.leadingComments && lastChild.leadingComments[lastChild.leadingComments.length - 1].range[1] <= node.range[0]) {
                node.leadingComments = lastChild.leadingComments;
                delete lastChild.leadingComments;
            }
        } else if (extra.leadingComments.length > 0 && extra.leadingComments[extra.leadingComments.length - 1].range[1] <= node.range[0]) {
            node.leadingComments = extra.leadingComments;
            extra.leadingComments = [];
        }

        if (trailingComments) {
            node.trailingComments = trailingComments;
        }

        bottomRight.push(node);
    }

    function markerApply(marker, node) {
        if (extra.range) {
            node.range = [marker.offset, index];
        }
        if (extra.loc) {
            node.loc = {
                start: {
                    line: marker.line,
                    column: marker.col
                },
                end: {
                    line: lineNumber,
                    column: index - lineStart
                }
            };
            node = delegate.postProcess(node);
        }
        if (extra.attachComment) {
            processComment(node);
        }
        return node;
    }

    SyntaxTreeDelegate = {

        name: 'SyntaxTree',

        postProcess: function (node) {
            return node;
        },

        createArrayExpression: function (elements) {
            return {
                type: Syntax.ArrayExpression,
                elements: elements
            };
        },

        createAssignmentExpression: function (operator, left, right) {
            return {
                type: Syntax.AssignmentExpression,
                operator: operator,
                left: left,
                right: right
            };
        },

        createBinaryExpression: function (operator, left, right) {
            var type = (operator === '||' || operator === '&&') ? Syntax.LogicalExpression :
                        Syntax.BinaryExpression;
            return {
                type: type,
                operator: operator,
                left: left,
                right: right
            };
        },

        createBlockStatement: function (body) {
            return {
                type: Syntax.BlockStatement,
                body: body
            };
        },

        createBreakStatement: function (label) {
            return {
                type: Syntax.BreakStatement,
                label: label
            };
        },

        createCallExpression: function (callee, args) {
            return {
                type: Syntax.CallExpression,
                callee: callee,
                'arguments': args
            };
        },

        createCatchClause: function (param, body) {
            return {
                type: Syntax.CatchClause,
                param: param,
                body: body
            };
        },

        createConditionalExpression: function (test, consequent, alternate) {
            return {
                type: Syntax.ConditionalExpression,
                test: test,
                consequent: consequent,
                alternate: alternate
            };
        },

        createContinueStatement: function (label) {
            return {
                type: Syntax.ContinueStatement,
                label: label
            };
        },

        createDebuggerStatement: function () {
            return {
                type: Syntax.DebuggerStatement
            };
        },

        createDoWhileStatement: function (body, test) {
            return {
                type: Syntax.DoWhileStatement,
                body: body,
                test: test
            };
        },

        createEmptyStatement: function () {
            return {
                type: Syntax.EmptyStatement
            };
        },

        createExpressionStatement: function (expression) {
            return {
                type: Syntax.ExpressionStatement,
                expression: expression
            };
        },

        createForStatement: function (init, test, update, body) {
            return {
                type: Syntax.ForStatement,
                init: init,
                test: test,
                update: update,
                body: body
            };
        },

        createForInStatement: function (left, right, body) {
            return {
                type: Syntax.ForInStatement,
                left: left,
                right: right,
                body: body,
                each: false
            };
        },

        createForOfStatement: function (left, right, body) {
            return {
                type: Syntax.ForOfStatement,
                left: left,
                right: right,
                body: body
            };
        },

        createFunctionDeclaration: function (id, params, defaults, body, rest, generator, expression,
                                             isAsync, returnType, typeParameters) {
            var funDecl = {
                type: Syntax.FunctionDeclaration,
                id: id,
                params: params,
                defaults: defaults,
                body: body,
                rest: rest,
                generator: generator,
                expression: expression,
                returnType: returnType,
                typeParameters: typeParameters
            };

            if (isAsync) {
                funDecl.async = true;
            }

            return funDecl;
        },

        createFunctionExpression: function (id, params, defaults, body, rest, generator, expression,
                                            isAsync, returnType, typeParameters) {
            var funExpr = {
                type: Syntax.FunctionExpression,
                id: id,
                params: params,
                defaults: defaults,
                body: body,
                rest: rest,
                generator: generator,
                expression: expression,
                returnType: returnType,
                typeParameters: typeParameters
            };

            if (isAsync) {
                funExpr.async = true;
            }

            return funExpr;
        },

        createIdentifier: function (name) {
            return {
                type: Syntax.Identifier,
                name: name,
                // Only here to initialize the shape of the object to ensure
                // that the 'typeAnnotation' key is ordered before others that
                // are added later (like 'loc' and 'range'). This just helps
                // keep the shape of Identifier nodes consistent with everything
                // else.
                typeAnnotation: undefined,
                optional: undefined
            };
        },

        createTypeAnnotation: function (typeAnnotation) {
            return {
                type: Syntax.TypeAnnotation,
                typeAnnotation: typeAnnotation
            };
        },

        createFunctionTypeAnnotation: function (params, returnType, rest, typeParameters) {
            return {
                type: Syntax.FunctionTypeAnnotation,
                params: params,
                returnType: returnType,
                rest: rest,
                typeParameters: typeParameters
            };
        },

        createFunctionTypeParam: function (name, typeAnnotation, optional) {
            return {
                type: Syntax.FunctionTypeParam,
                name: name,
                typeAnnotation: typeAnnotation,
                optional: optional
            };
        },

        createNullableTypeAnnotation: function (typeAnnotation) {
            return {
                type: Syntax.NullableTypeAnnotation,
                typeAnnotation: typeAnnotation
            };
        },

        createArrayTypeAnnotation: function (elementType) {
            return {
                type: Syntax.ArrayTypeAnnotation,
                elementType: elementType
            };
        },

        createGenericTypeAnnotation: function (id, typeParameters) {
            return {
                type: Syntax.GenericTypeAnnotation,
                id: id,
                typeParameters: typeParameters
            };
        },

        createQualifiedTypeIdentifier: function (qualification, id) {
            return {
                type: Syntax.QualifiedTypeIdentifier,
                qualification: qualification,
                id: id
            };
        },

        createTypeParameterDeclaration: function (params) {
            return {
                type: Syntax.TypeParameterDeclaration,
                params: params
            };
        },

        createTypeParameterInstantiation: function (params) {
            return {
                type: Syntax.TypeParameterInstantiation,
                params: params
            };
        },

        createAnyTypeAnnotation: function () {
            return {
                type: Syntax.AnyTypeAnnotation
            };
        },

        createBooleanTypeAnnotation: function () {
            return {
                type: Syntax.BooleanTypeAnnotation
            };
        },

        createNumberTypeAnnotation: function () {
            return {
                type: Syntax.NumberTypeAnnotation
            };
        },

        createStringTypeAnnotation: function () {
            return {
                type: Syntax.StringTypeAnnotation
            };
        },

        createStringLiteralTypeAnnotation: function (token) {
            return {
                type: Syntax.StringLiteralTypeAnnotation,
                value: token.value,
                raw: source.slice(token.range[0], token.range[1])
            };
        },

        createVoidTypeAnnotation: function () {
            return {
                type: Syntax.VoidTypeAnnotation
            };
        },

        createTypeofTypeAnnotation: function (argument) {
            return {
                type: Syntax.TypeofTypeAnnotation,
                argument: argument
            };
        },

        createTupleTypeAnnotation: function (types) {
            return {
                type: Syntax.TupleTypeAnnotation,
                types: types
            };
        },

        createObjectTypeAnnotation: function (properties, indexers, callProperties) {
            return {
                type: Syntax.ObjectTypeAnnotation,
                properties: properties,
                indexers: indexers,
                callProperties: callProperties
            };
        },

        createObjectTypeIndexer: function (id, key, value, isStatic) {
            return {
                type: Syntax.ObjectTypeIndexer,
                id: id,
                key: key,
                value: value,
                static: isStatic
            };
        },

        createObjectTypeCallProperty: function (value, isStatic) {
            return {
                type: Syntax.ObjectTypeCallProperty,
                value: value,
                static: isStatic
            };
        },

        createObjectTypeProperty: function (key, value, optional, isStatic) {
            return {
                type: Syntax.ObjectTypeProperty,
                key: key,
                value: value,
                optional: optional,
                static: isStatic
            };
        },

        createUnionTypeAnnotation: function (types) {
            return {
                type: Syntax.UnionTypeAnnotation,
                types: types
            };
        },

        createIntersectionTypeAnnotation: function (types) {
            return {
                type: Syntax.IntersectionTypeAnnotation,
                types: types
            };
        },

        createTypeAlias: function (id, typeParameters, right) {
            return {
                type: Syntax.TypeAlias,
                id: id,
                typeParameters: typeParameters,
                right: right
            };
        },

        createInterface: function (id, typeParameters, body, extended) {
            return {
                type: Syntax.InterfaceDeclaration,
                id: id,
                typeParameters: typeParameters,
                body: body,
                extends: extended
            };
        },

        createInterfaceExtends: function (id, typeParameters) {
            return {
                type: Syntax.InterfaceExtends,
                id: id,
                typeParameters: typeParameters
            };
        },

        createDeclareFunction: function (id) {
            return {
                type: Syntax.DeclareFunction,
                id: id
            };
        },

        createDeclareVariable: function (id) {
            return {
                type: Syntax.DeclareVariable,
                id: id
            };
        },

        createDeclareModule: function (id, body) {
            return {
                type: Syntax.DeclareModule,
                id: id,
                body: body
            };
        },

        createXJSAttribute: function (name, value) {
            return {
                type: Syntax.XJSAttribute,
                name: name,
                value: value || null
            };
        },

        createXJSSpreadAttribute: function (argument) {
            return {
                type: Syntax.XJSSpreadAttribute,
                argument: argument
            };
        },

        createXJSIdentifier: function (name) {
            return {
                type: Syntax.XJSIdentifier,
                name: name
            };
        },

        createXJSNamespacedName: function (namespace, name) {
            return {
                type: Syntax.XJSNamespacedName,
                namespace: namespace,
                name: name
            };
        },

        createXJSMemberExpression: function (object, property) {
            return {
                type: Syntax.XJSMemberExpression,
                object: object,
                property: property
            };
        },

        createXJSElement: function (openingElement, closingElement, children) {
            return {
                type: Syntax.XJSElement,
                openingElement: openingElement,
                closingElement: closingElement,
                children: children
            };
        },

        createXJSEmptyExpression: function () {
            return {
                type: Syntax.XJSEmptyExpression
            };
        },

        createXJSExpressionContainer: function (expression) {
            return {
                type: Syntax.XJSExpressionContainer,
                expression: expression
            };
        },

        createXJSOpeningElement: function (name, attributes, selfClosing) {
            return {
                type: Syntax.XJSOpeningElement,
                name: name,
                selfClosing: selfClosing,
                attributes: attributes
            };
        },

        createXJSClosingElement: function (name) {
            return {
                type: Syntax.XJSClosingElement,
                name: name
            };
        },

        createIfStatement: function (test, consequent, alternate) {
            return {
                type: Syntax.IfStatement,
                test: test,
                consequent: consequent,
                alternate: alternate
            };
        },

        createLabeledStatement: function (label, body) {
            return {
                type: Syntax.LabeledStatement,
                label: label,
                body: body
            };
        },

        createLiteral: function (token) {
            var object = {
                type: Syntax.Literal,
                value: token.value,
                raw: source.slice(token.range[0], token.range[1])
            };
            if (token.regex) {
                object.regex = token.regex;
            }
            return object;
        },

        createMemberExpression: function (accessor, object, property) {
            return {
                type: Syntax.MemberExpression,
                computed: accessor === '[',
                object: object,
                property: property
            };
        },

        createNewExpression: function (callee, args) {
            return {
                type: Syntax.NewExpression,
                callee: callee,
                'arguments': args
            };
        },

        createObjectExpression: function (properties) {
            return {
                type: Syntax.ObjectExpression,
                properties: properties
            };
        },

        createPostfixExpression: function (operator, argument) {
            return {
                type: Syntax.UpdateExpression,
                operator: operator,
                argument: argument,
                prefix: false
            };
        },

        createProgram: function (body) {
            return {
                type: Syntax.Program,
                body: body
            };
        },

        createProperty: function (kind, key, value, method, shorthand, computed) {
            return {
                type: Syntax.Property,
                key: key,
                value: value,
                kind: kind,
                method: method,
                shorthand: shorthand,
                computed: computed
            };
        },

        createReturnStatement: function (argument) {
            return {
                type: Syntax.ReturnStatement,
                argument: argument
            };
        },

        createSequenceExpression: function (expressions) {
            return {
                type: Syntax.SequenceExpression,
                expressions: expressions
            };
        },

        createSwitchCase: function (test, consequent) {
            return {
                type: Syntax.SwitchCase,
                test: test,
                consequent: consequent
            };
        },

        createSwitchStatement: function (discriminant, cases) {
            return {
                type: Syntax.SwitchStatement,
                discriminant: discriminant,
                cases: cases
            };
        },

        createThisExpression: function () {
            return {
                type: Syntax.ThisExpression
            };
        },

        createThrowStatement: function (argument) {
            return {
                type: Syntax.ThrowStatement,
                argument: argument
            };
        },

        createTryStatement: function (block, guardedHandlers, handlers, finalizer) {
            return {
                type: Syntax.TryStatement,
                block: block,
                guardedHandlers: guardedHandlers,
                handlers: handlers,
                finalizer: finalizer
            };
        },

        createUnaryExpression: function (operator, argument) {
            if (operator === '++' || operator === '--') {
                return {
                    type: Syntax.UpdateExpression,
                    operator: operator,
                    argument: argument,
                    prefix: true
                };
            }
            return {
                type: Syntax.UnaryExpression,
                operator: operator,
                argument: argument,
                prefix: true
            };
        },

        createVariableDeclaration: function (declarations, kind) {
            return {
                type: Syntax.VariableDeclaration,
                declarations: declarations,
                kind: kind
            };
        },

        createVariableDeclarator: function (id, init) {
            return {
                type: Syntax.VariableDeclarator,
                id: id,
                init: init
            };
        },

        createWhileStatement: function (test, body) {
            return {
                type: Syntax.WhileStatement,
                test: test,
                body: body
            };
        },

        createWithStatement: function (object, body) {
            return {
                type: Syntax.WithStatement,
                object: object,
                body: body
            };
        },

        createTemplateElement: function (value, tail) {
            return {
                type: Syntax.TemplateElement,
                value: value,
                tail: tail
            };
        },

        createTemplateLiteral: function (quasis, expressions) {
            return {
                type: Syntax.TemplateLiteral,
                quasis: quasis,
                expressions: expressions
            };
        },

        createSpreadElement: function (argument) {
            return {
                type: Syntax.SpreadElement,
                argument: argument
            };
        },

        createSpreadProperty: function (argument) {
            return {
                type: Syntax.SpreadProperty,
                argument: argument
            };
        },

        createTaggedTemplateExpression: function (tag, quasi) {
            return {
                type: Syntax.TaggedTemplateExpression,
                tag: tag,
                quasi: quasi
            };
        },

        createArrowFunctionExpression: function (params, defaults, body, rest, expression, isAsync) {
            var arrowExpr = {
                type: Syntax.ArrowFunctionExpression,
                id: null,
                params: params,
                defaults: defaults,
                body: body,
                rest: rest,
                generator: false,
                expression: expression
            };

            if (isAsync) {
                arrowExpr.async = true;
            }

            return arrowExpr;
        },

        createMethodDefinition: function (propertyType, kind, key, value) {
            return {
                type: Syntax.MethodDefinition,
                key: key,
                value: value,
                kind: kind,
                'static': propertyType === ClassPropertyType.static
            };
        },

        createClassProperty: function (key, typeAnnotation, computed, isStatic) {
            return {
                type: Syntax.ClassProperty,
                key: key,
                typeAnnotation: typeAnnotation,
                computed: computed,
                static: isStatic
            };
        },

        createClassBody: function (body) {
            return {
                type: Syntax.ClassBody,
                body: body
            };
        },

        createClassImplements: function (id, typeParameters) {
            return {
                type: Syntax.ClassImplements,
                id: id,
                typeParameters: typeParameters
            };
        },

        createClassExpression: function (id, superClass, body, typeParameters, superTypeParameters, implemented) {
            return {
                type: Syntax.ClassExpression,
                id: id,
                superClass: superClass,
                body: body,
                typeParameters: typeParameters,
                superTypeParameters: superTypeParameters,
                implements: implemented
            };
        },

        createClassDeclaration: function (id, superClass, body, typeParameters, superTypeParameters, implemented) {
            return {
                type: Syntax.ClassDeclaration,
                id: id,
                superClass: superClass,
                body: body,
                typeParameters: typeParameters,
                superTypeParameters: superTypeParameters,
                implements: implemented
            };
        },

        createModuleSpecifier: function (token) {
            return {
                type: Syntax.ModuleSpecifier,
                value: token.value,
                raw: source.slice(token.range[0], token.range[1])
            };
        },

        createExportSpecifier: function (id, name) {
            return {
                type: Syntax.ExportSpecifier,
                id: id,
                name: name
            };
        },

        createExportBatchSpecifier: function () {
            return {
                type: Syntax.ExportBatchSpecifier
            };
        },

        createImportDefaultSpecifier: function (id) {
            return {
                type: Syntax.ImportDefaultSpecifier,
                id: id
            };
        },

        createImportNamespaceSpecifier: function (id) {
            return {
                type: Syntax.ImportNamespaceSpecifier,
                id: id
            };
        },

        createExportDeclaration: function (isDefault, declaration, specifiers, source) {
            return {
                type: Syntax.ExportDeclaration,
                'default': !!isDefault,
                declaration: declaration,
                specifiers: specifiers,
                source: source
            };
        },

        createImportSpecifier: function (id, name) {
            return {
                type: Syntax.ImportSpecifier,
                id: id,
                name: name
            };
        },

        createImportDeclaration: function (specifiers, source) {
            return {
                type: Syntax.ImportDeclaration,
                specifiers: specifiers,
                source: source
            };
        },

        createYieldExpression: function (argument, delegate) {
            return {
                type: Syntax.YieldExpression,
                argument: argument,
                delegate: delegate
            };
        },

        createAwaitExpression: function (argument) {
            return {
                type: Syntax.AwaitExpression,
                argument: argument
            };
        },

        createComprehensionExpression: function (filter, blocks, body) {
            return {
                type: Syntax.ComprehensionExpression,
                filter: filter,
                blocks: blocks,
                body: body
            };
        }

    };

    // Return true if there is a line terminator before the next token.

    function peekLineTerminator() {
        var pos, line, start, found;

        pos = index;
        line = lineNumber;
        start = lineStart;
        skipComment();
        found = lineNumber !== line;
        index = pos;
        lineNumber = line;
        lineStart = start;

        return found;
    }

    // Throw an exception

    function throwError(token, messageFormat) {
        var error,
            args = Array.prototype.slice.call(arguments, 2),
            msg = messageFormat.replace(
                /%(\d)/g,
                function (whole, index) {
                    assert(index < args.length, 'Message reference must be in range');
                    return args[index];
                }
            );

        if (typeof token.lineNumber === 'number') {
            error = new Error('Line ' + token.lineNumber + ': ' + msg);
            error.index = token.range[0];
            error.lineNumber = token.lineNumber;
            error.column = token.range[0] - lineStart + 1;
        } else {
            error = new Error('Line ' + lineNumber + ': ' + msg);
            error.index = index;
            error.lineNumber = lineNumber;
            error.column = index - lineStart + 1;
        }

        error.description = msg;
        throw error;
    }

    function throwErrorTolerant() {
        try {
            throwError.apply(null, arguments);
        } catch (e) {
            if (extra.errors) {
                extra.errors.push(e);
            } else {
                throw e;
            }
        }
    }


    // Throw an exception because of the token.

    function throwUnexpected(token) {
        if (token.type === Token.EOF) {
            throwError(token, Messages.UnexpectedEOS);
        }

        if (token.type === Token.NumericLiteral) {
            throwError(token, Messages.UnexpectedNumber);
        }

        if (token.type === Token.StringLiteral || token.type === Token.XJSText) {
            throwError(token, Messages.UnexpectedString);
        }

        if (token.type === Token.Identifier) {
            throwError(token, Messages.UnexpectedIdentifier);
        }

        if (token.type === Token.Keyword) {
            if (isFutureReservedWord(token.value)) {
                throwError(token, Messages.UnexpectedReserved);
            } else if (strict && isStrictModeReservedWord(token.value)) {
                throwErrorTolerant(token, Messages.StrictReservedWord);
                return;
            }
            throwError(token, Messages.UnexpectedToken, token.value);
        }

        if (token.type === Token.Template) {
            throwError(token, Messages.UnexpectedTemplate, token.value.raw);
        }

        // BooleanLiteral, NullLiteral, or Punctuator.
        throwError(token, Messages.UnexpectedToken, token.value);
    }

    // Expect the next token to match the specified punctuator.
    // If not, an exception will be thrown.

    function expect(value) {
        var token = lex();
        if (token.type !== Token.Punctuator || token.value !== value) {
            throwUnexpected(token);
        }
    }

    // Expect the next token to match the specified keyword.
    // If not, an exception will be thrown.

    function expectKeyword(keyword, contextual) {
        var token = lex();
        if (token.type !== (contextual ? Token.Identifier : Token.Keyword) ||
                token.value !== keyword) {
            throwUnexpected(token);
        }
    }

    // Expect the next token to match the specified contextual keyword.
    // If not, an exception will be thrown.

    function expectContextualKeyword(keyword) {
        return expectKeyword(keyword, true);
    }

    // Return true if the next token matches the specified punctuator.

    function match(value) {
        return lookahead.type === Token.Punctuator && lookahead.value === value;
    }

    // Return true if the next token matches the specified keyword

    function matchKeyword(keyword, contextual) {
        var expectedType = contextual ? Token.Identifier : Token.Keyword;
        return lookahead.type === expectedType && lookahead.value === keyword;
    }

    // Return true if the next token matches the specified contextual keyword

    function matchContextualKeyword(keyword) {
        return matchKeyword(keyword, true);
    }

    // Return true if the next token is an assignment operator

    function matchAssign() {
        var op;

        if (lookahead.type !== Token.Punctuator) {
            return false;
        }
        op = lookahead.value;
        return op === '=' ||
            op === '*=' ||
            op === '/=' ||
            op === '%=' ||
            op === '+=' ||
            op === '-=' ||
            op === '<<=' ||
            op === '>>=' ||
            op === '>>>=' ||
            op === '&=' ||
            op === '^=' ||
            op === '|=';
    }

    // Note that 'yield' is treated as a keyword in strict mode, but a
    // contextual keyword (identifier) in non-strict mode, so we need to
    // use matchKeyword('yield', false) and matchKeyword('yield', true)
    // (i.e. matchContextualKeyword) appropriately.
    function matchYield() {
        return state.yieldAllowed && matchKeyword('yield', !strict);
    }

    function matchAsync() {
        var backtrackToken = lookahead, matches = false;

        if (matchContextualKeyword('async')) {
            lex(); // Make sure peekLineTerminator() starts after 'async'.
            matches = !peekLineTerminator();
            rewind(backtrackToken); // Revert the lex().
        }

        return matches;
    }

    function matchAwait() {
        return state.awaitAllowed && matchContextualKeyword('await');
    }

    function consumeSemicolon() {
        var line, oldIndex = index, oldLineNumber = lineNumber,
            oldLineStart = lineStart, oldLookahead = lookahead;

        // Catch the very common case first: immediately a semicolon (char #59).
        if (source.charCodeAt(index) === 59) {
            lex();
            return;
        }

        line = lineNumber;
        skipComment();
        if (lineNumber !== line) {
            index = oldIndex;
            lineNumber = oldLineNumber;
            lineStart = oldLineStart;
            lookahead = oldLookahead;
            return;
        }

        if (match(';')) {
            lex();
            return;
        }

        if (lookahead.type !== Token.EOF && !match('}')) {
            throwUnexpected(lookahead);
        }
    }

    // Return true if provided expression is LeftHandSideExpression

    function isLeftHandSide(expr) {
        return expr.type === Syntax.Identifier || expr.type === Syntax.MemberExpression;
    }

    function isAssignableLeftHandSide(expr) {
        return isLeftHandSide(expr) || expr.type === Syntax.ObjectPattern || expr.type === Syntax.ArrayPattern;
    }

    // 11.1.4 Array Initialiser

    function parseArrayInitialiser() {
        var elements = [], blocks = [], filter = null, tmp, possiblecomprehension = true, body,
            marker = markerCreate();

        expect('[');
        while (!match(']')) {
            if (lookahead.value === 'for' &&
                    lookahead.type === Token.Keyword) {
                if (!possiblecomprehension) {
                    throwError({}, Messages.ComprehensionError);
                }
                matchKeyword('for');
                tmp = parseForStatement({ignoreBody: true});
                tmp.of = tmp.type === Syntax.ForOfStatement;
                tmp.type = Syntax.ComprehensionBlock;
                if (tmp.left.kind) { // can't be let or const
                    throwError({}, Messages.ComprehensionError);
                }
                blocks.push(tmp);
            } else if (lookahead.value === 'if' &&
                           lookahead.type === Token.Keyword) {
                if (!possiblecomprehension) {
                    throwError({}, Messages.ComprehensionError);
                }
                expectKeyword('if');
                expect('(');
                filter = parseExpression();
                expect(')');
            } else if (lookahead.value === ',' &&
                           lookahead.type === Token.Punctuator) {
                possiblecomprehension = false; // no longer allowed.
                lex();
                elements.push(null);
            } else {
                tmp = parseSpreadOrAssignmentExpression();
                elements.push(tmp);
                if (tmp && tmp.type === Syntax.SpreadElement) {
                    if (!match(']')) {
                        throwError({}, Messages.ElementAfterSpreadElement);
                    }
                } else if (!(match(']') || matchKeyword('for') || matchKeyword('if'))) {
                    expect(','); // this lexes.
                    possiblecomprehension = false;
                }
            }
        }

        expect(']');

        if (filter && !blocks.length) {
            throwError({}, Messages.ComprehensionRequiresBlock);
        }

        if (blocks.length) {
            if (elements.length !== 1) {
                throwError({}, Messages.ComprehensionError);
            }
            return markerApply(marker, delegate.createComprehensionExpression(filter, blocks, elements[0]));
        }
        return markerApply(marker, delegate.createArrayExpression(elements));
    }

    // 11.1.5 Object Initialiser

    function parsePropertyFunction(options) {
        var previousStrict, previousYieldAllowed, previousAwaitAllowed,
            params, defaults, body, marker = markerCreate();

        previousStrict = strict;
        previousYieldAllowed = state.yieldAllowed;
        state.yieldAllowed = options.generator;
        previousAwaitAllowed = state.awaitAllowed;
        state.awaitAllowed = options.async;
        params = options.params || [];
        defaults = options.defaults || [];

        body = parseConciseBody();
        if (options.name && strict && isRestrictedWord(params[0].name)) {
            throwErrorTolerant(options.name, Messages.StrictParamName);
        }
        strict = previousStrict;
        state.yieldAllowed = previousYieldAllowed;
        state.awaitAllowed = previousAwaitAllowed;

        return markerApply(marker, delegate.createFunctionExpression(
            null,
            params,
            defaults,
            body,
            options.rest || null,
            options.generator,
            body.type !== Syntax.BlockStatement,
            options.async,
            options.returnType,
            options.typeParameters
        ));
    }


    function parsePropertyMethodFunction(options) {
        var previousStrict, tmp, method;

        previousStrict = strict;
        strict = true;

        tmp = parseParams();

        if (tmp.stricted) {
            throwErrorTolerant(tmp.stricted, tmp.message);
        }

        method = parsePropertyFunction({
            params: tmp.params,
            defaults: tmp.defaults,
            rest: tmp.rest,
            generator: options.generator,
            async: options.async,
            returnType: tmp.returnType,
            typeParameters: options.typeParameters
        });

        strict = previousStrict;

        return method;
    }


    function parseObjectPropertyKey() {
        var marker = markerCreate(),
            token = lex(),
            propertyKey,
            result;

        // Note: This function is called only from parseObjectProperty(), where
        // EOF and Punctuator tokens are already filtered out.

        if (token.type === Token.StringLiteral || token.type === Token.NumericLiteral) {
            if (strict && token.octal) {
                throwErrorTolerant(token, Messages.StrictOctalLiteral);
            }
            return markerApply(marker, delegate.createLiteral(token));
        }

        if (token.type === Token.Punctuator && token.value === '[') {
            // For computed properties we should skip the [ and ], and
            // capture in marker only the assignment expression itself.
            marker = markerCreate();
            propertyKey = parseAssignmentExpression();
            result = markerApply(marker, propertyKey);
            expect(']');
            return result;
        }

        return markerApply(marker, delegate.createIdentifier(token.value));
    }

    function parseObjectProperty() {
        var token, key, id, value, param, expr, computed,
            marker = markerCreate(), returnType;

        token = lookahead;
        computed = (token.value === '[');

        if (token.type === Token.Identifier || computed || matchAsync()) {
            id = parseObjectPropertyKey();

            if (match(':')) {
                lex();

                return markerApply(
                    marker,
                    delegate.createProperty(
                        'init',
                        id,
                        parseAssignmentExpression(),
                        false,
                        false,
                        computed
                    )
                );
            }

            if (match('(')) {
                return markerApply(
                    marker,
                    delegate.createProperty(
                        'init',
                        id,
                        parsePropertyMethodFunction({
                            generator: false,
                            async: false
                        }),
                        true,
                        false,
                        computed
                    )
                );
            }

            // Property Assignment: Getter and Setter.

            if (token.value === 'get') {
                computed = (lookahead.value === '[');
                key = parseObjectPropertyKey();

                expect('(');
                expect(')');
                if (match(':')) {
                    returnType = parseTypeAnnotation();
                }

                return markerApply(
                    marker,
                    delegate.createProperty(
                        'get',
                        key,
                        parsePropertyFunction({
                            generator: false,
                            async: false,
                            returnType: returnType
                        }),
                        false,
                        false,
                        computed
                    )
                );
            }

            if (token.value === 'set') {
                computed = (lookahead.value === '[');
                key = parseObjectPropertyKey();

                expect('(');
                token = lookahead;
                param = [ parseTypeAnnotatableIdentifier() ];
                expect(')');
                if (match(':')) {
                    returnType = parseTypeAnnotation();
                }

                return markerApply(
                    marker,
                    delegate.createProperty(
                        'set',
                        key,
                        parsePropertyFunction({
                            params: param,
                            generator: false,
                            async: false,
                            name: token,
                            returnType: returnType
                        }),
                        false,
                        false,
                        computed
                    )
                );
            }

            if (token.value === 'async') {
                computed = (lookahead.value === '[');
                key = parseObjectPropertyKey();

                return markerApply(
                    marker,
                    delegate.createProperty(
                        'init',
                        key,
                        parsePropertyMethodFunction({
                            generator: false,
                            async: true
                        }),
                        true,
                        false,
                        computed
                    )
                );
            }

            if (computed) {
                // Computed properties can only be used with full notation.
                throwUnexpected(lookahead);
            }

            return markerApply(
                marker,
                delegate.createProperty('init', id, id, false, true, false)
            );
        }

        if (token.type === Token.EOF || token.type === Token.Punctuator) {
            if (!match('*')) {
                throwUnexpected(token);
            }
            lex();

            computed = (lookahead.type === Token.Punctuator && lookahead.value === '[');

            id = parseObjectPropertyKey();

            if (!match('(')) {
                throwUnexpected(lex());
            }

            return markerApply(marker, delegate.createProperty('init', id, parsePropertyMethodFunction({ generator: true }), true, false, computed));
        }
        key = parseObjectPropertyKey();
        if (match(':')) {
            lex();
            return markerApply(marker, delegate.createProperty('init', key, parseAssignmentExpression(), false, false, false));
        }
        if (match('(')) {
            return markerApply(marker, delegate.createProperty('init', key, parsePropertyMethodFunction({ generator: false }), true, false, false));
        }
        throwUnexpected(lex());
    }

    function parseObjectSpreadProperty() {
        var marker = markerCreate();
        expect('...');
        return markerApply(marker, delegate.createSpreadProperty(parseAssignmentExpression()));
    }

    function parseObjectInitialiser() {
        var properties = [], property, name, key, kind, map = {}, toString = String,
            marker = markerCreate();

        expect('{');

        while (!match('}')) {
            if (match('...')) {
                property = parseObjectSpreadProperty();
            } else {
                property = parseObjectProperty();

                if (property.key.type === Syntax.Identifier) {
                    name = property.key.name;
                } else {
                    name = toString(property.key.value);
                }
                kind = (property.kind === 'init') ? PropertyKind.Data : (property.kind === 'get') ? PropertyKind.Get : PropertyKind.Set;

                key = '$' + name;
                if (Object.prototype.hasOwnProperty.call(map, key)) {
                    if (map[key] === PropertyKind.Data) {
                        if (strict && kind === PropertyKind.Data) {
                            throwErrorTolerant({}, Messages.StrictDuplicateProperty);
                        } else if (kind !== PropertyKind.Data) {
                            throwErrorTolerant({}, Messages.AccessorDataProperty);
                        }
                    } else {
                        if (kind === PropertyKind.Data) {
                            throwErrorTolerant({}, Messages.AccessorDataProperty);
                        } else if (map[key] & kind) {
                            throwErrorTolerant({}, Messages.AccessorGetSet);
                        }
                    }
                    map[key] |= kind;
                } else {
                    map[key] = kind;
                }
            }

            properties.push(property);

            if (!match('}')) {
                expect(',');
            }
        }

        expect('}');

        return markerApply(marker, delegate.createObjectExpression(properties));
    }

    function parseTemplateElement(option) {
        var marker = markerCreate(),
            token = scanTemplateElement(option);
        if (strict && token.octal) {
            throwError(token, Messages.StrictOctalLiteral);
        }
        return markerApply(marker, delegate.createTemplateElement({ raw: token.value.raw, cooked: token.value.cooked }, token.tail));
    }

    function parseTemplateLiteral() {
        var quasi, quasis, expressions, marker = markerCreate();

        quasi = parseTemplateElement({ head: true });
        quasis = [ quasi ];
        expressions = [];

        while (!quasi.tail) {
            expressions.push(parseExpression());
            quasi = parseTemplateElement({ head: false });
            quasis.push(quasi);
        }

        return markerApply(marker, delegate.createTemplateLiteral(quasis, expressions));
    }

    // 11.1.6 The Grouping Operator

    function parseGroupExpression() {
        var expr;

        expect('(');

        ++state.parenthesizedCount;

        expr = parseExpression();

        expect(')');

        return expr;
    }

    function matchAsyncFuncExprOrDecl() {
        var token;

        if (matchAsync()) {
            token = lookahead2();
            if (token.type === Token.Keyword && token.value === 'function') {
                return true;
            }
        }

        return false;
    }

    // 11.1 Primary Expressions

    function parsePrimaryExpression() {
        var marker, type, token, expr;

        type = lookahead.type;

        if (type === Token.Identifier) {
            marker = markerCreate();
            return markerApply(marker, delegate.createIdentifier(lex().value));
        }

        if (type === Token.StringLiteral || type === Token.NumericLiteral) {
            if (strict && lookahead.octal) {
                throwErrorTolerant(lookahead, Messages.StrictOctalLiteral);
            }
            marker = markerCreate();
            return markerApply(marker, delegate.createLiteral(lex()));
        }

        if (type === Token.Keyword) {
            if (matchKeyword('this')) {
                marker = markerCreate();
                lex();
                return markerApply(marker, delegate.createThisExpression());
            }

            if (matchKeyword('function')) {
                return parseFunctionExpression();
            }

            if (matchKeyword('class')) {
                return parseClassExpression();
            }

            if (matchKeyword('super')) {
                marker = markerCreate();
                lex();
                return markerApply(marker, delegate.createIdentifier('super'));
            }
        }

        if (type === Token.BooleanLiteral) {
            marker = markerCreate();
            token = lex();
            token.value = (token.value === 'true');
            return markerApply(marker, delegate.createLiteral(token));
        }

        if (type === Token.NullLiteral) {
            marker = markerCreate();
            token = lex();
            token.value = null;
            return markerApply(marker, delegate.createLiteral(token));
        }

        if (match('[')) {
            return parseArrayInitialiser();
        }

        if (match('{')) {
            return parseObjectInitialiser();
        }

        if (match('(')) {
            return parseGroupExpression();
        }

        if (match('/') || match('/=')) {
            marker = markerCreate();
            return markerApply(marker, delegate.createLiteral(scanRegExp()));
        }

        if (type === Token.Template) {
            return parseTemplateLiteral();
        }

        if (match('<')) {
            return parseXJSElement();
        }

        throwUnexpected(lex());
    }

    // 11.2 Left-Hand-Side Expressions

    function parseArguments() {
        var args = [], arg;

        expect('(');

        if (!match(')')) {
            while (index < length) {
                arg = parseSpreadOrAssignmentExpression();
                args.push(arg);

                if (match(')')) {
                    break;
                } else if (arg.type === Syntax.SpreadElement) {
                    throwError({}, Messages.ElementAfterSpreadElement);
                }

                expect(',');
            }
        }

        expect(')');

        return args;
    }

    function parseSpreadOrAssignmentExpression() {
        if (match('...')) {
            var marker = markerCreate();
            lex();
            return markerApply(marker, delegate.createSpreadElement(parseAssignmentExpression()));
        }
        return parseAssignmentExpression();
    }

    function parseNonComputedProperty() {
        var marker = markerCreate(),
            token = lex();

        if (!isIdentifierName(token)) {
            throwUnexpected(token);
        }

        return markerApply(marker, delegate.createIdentifier(token.value));
    }

    function parseNonComputedMember() {
        expect('.');

        return parseNonComputedProperty();
    }

    function parseComputedMember() {
        var expr;

        expect('[');

        expr = parseExpression();

        expect(']');

        return expr;
    }

    function parseNewExpression() {
        var callee, args, marker = markerCreate();

        expectKeyword('new');
        callee = parseLeftHandSideExpression();
        args = match('(') ? parseArguments() : [];

        return markerApply(marker, delegate.createNewExpression(callee, args));
    }

    function parseLeftHandSideExpressionAllowCall() {
        var expr, args, marker = markerCreate();

        expr = matchKeyword('new') ? parseNewExpression() : parsePrimaryExpression();

        while (match('.') || match('[') || match('(') || lookahead.type === Token.Template) {
            if (match('(')) {
                args = parseArguments();
                expr = markerApply(marker, delegate.createCallExpression(expr, args));
            } else if (match('[')) {
                expr = markerApply(marker, delegate.createMemberExpression('[', expr, parseComputedMember()));
            } else if (match('.')) {
                expr = markerApply(marker, delegate.createMemberExpression('.', expr, parseNonComputedMember()));
            } else {
                expr = markerApply(marker, delegate.createTaggedTemplateExpression(expr, parseTemplateLiteral()));
            }
        }

        return expr;
    }

    function parseLeftHandSideExpression() {
        var expr, marker = markerCreate();

        expr = matchKeyword('new') ? parseNewExpression() : parsePrimaryExpression();

        while (match('.') || match('[') || lookahead.type === Token.Template) {
            if (match('[')) {
                expr = markerApply(marker, delegate.createMemberExpression('[', expr, parseComputedMember()));
            } else if (match('.')) {
                expr = markerApply(marker, delegate.createMemberExpression('.', expr, parseNonComputedMember()));
            } else {
                expr = markerApply(marker, delegate.createTaggedTemplateExpression(expr, parseTemplateLiteral()));
            }
        }

        return expr;
    }

    // 11.3 Postfix Expressions

    function parsePostfixExpression() {
        var marker = markerCreate(),
            expr = parseLeftHandSideExpressionAllowCall(),
            token;

        if (lookahead.type !== Token.Punctuator) {
            return expr;
        }

        if ((match('++') || match('--')) && !peekLineTerminator()) {
            // 11.3.1, 11.3.2
            if (strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)) {
                throwErrorTolerant({}, Messages.StrictLHSPostfix);
            }

            if (!isLeftHandSide(expr)) {
                throwError({}, Messages.InvalidLHSInAssignment);
            }

            token = lex();
            expr = markerApply(marker, delegate.createPostfixExpression(token.value, expr));
        }

        return expr;
    }

    // 11.4 Unary Operators

    function parseUnaryExpression() {
        var marker, token, expr;

        if (lookahead.type !== Token.Punctuator && lookahead.type !== Token.Keyword) {
            return parsePostfixExpression();
        }

        if (match('++') || match('--')) {
            marker = markerCreate();
            token = lex();
            expr = parseUnaryExpression();
            // 11.4.4, 11.4.5
            if (strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)) {
                throwErrorTolerant({}, Messages.StrictLHSPrefix);
            }

            if (!isLeftHandSide(expr)) {
                throwError({}, Messages.InvalidLHSInAssignment);
            }

            return markerApply(marker, delegate.createUnaryExpression(token.value, expr));
        }

        if (match('+') || match('-') || match('~') || match('!')) {
            marker = markerCreate();
            token = lex();
            expr = parseUnaryExpression();
            return markerApply(marker, delegate.createUnaryExpression(token.value, expr));
        }

        if (matchKeyword('delete') || matchKeyword('void') || matchKeyword('typeof')) {
            marker = markerCreate();
            token = lex();
            expr = parseUnaryExpression();
            expr = markerApply(marker, delegate.createUnaryExpression(token.value, expr));
            if (strict && expr.operator === 'delete' && expr.argument.type === Syntax.Identifier) {
                throwErrorTolerant({}, Messages.StrictDelete);
            }
            return expr;
        }

        return parsePostfixExpression();
    }

    function binaryPrecedence(token, allowIn) {
        var prec = 0;

        if (token.type !== Token.Punctuator && token.type !== Token.Keyword) {
            return 0;
        }

        switch (token.value) {
        case '||':
            prec = 1;
            break;

        case '&&':
            prec = 2;
            break;

        case '|':
            prec = 3;
            break;

        case '^':
            prec = 4;
            break;

        case '&':
            prec = 5;
            break;

        case '==':
        case '!=':
        case '===':
        case '!==':
            prec = 6;
            break;

        case '<':
        case '>':
        case '<=':
        case '>=':
        case 'instanceof':
            prec = 7;
            break;

        case 'in':
            prec = allowIn ? 7 : 0;
            break;

        case '<<':
        case '>>':
        case '>>>':
            prec = 8;
            break;

        case '+':
        case '-':
            prec = 9;
            break;

        case '*':
        case '/':
        case '%':
            prec = 11;
            break;

        default:
            break;
        }

        return prec;
    }

    // 11.5 Multiplicative Operators
    // 11.6 Additive Operators
    // 11.7 Bitwise Shift Operators
    // 11.8 Relational Operators
    // 11.9 Equality Operators
    // 11.10 Binary Bitwise Operators
    // 11.11 Binary Logical Operators

    function parseBinaryExpression() {
        var expr, token, prec, previousAllowIn, stack, right, operator, left, i,
            marker, markers;

        previousAllowIn = state.allowIn;
        state.allowIn = true;

        marker = markerCreate();
        left = parseUnaryExpression();

        token = lookahead;
        prec = binaryPrecedence(token, previousAllowIn);
        if (prec === 0) {
            return left;
        }
        token.prec = prec;
        lex();

        markers = [marker, markerCreate()];
        right = parseUnaryExpression();

        stack = [left, token, right];

        while ((prec = binaryPrecedence(lookahead, previousAllowIn)) > 0) {

            // Reduce: make a binary expression from the three topmost entries.
            while ((stack.length > 2) && (prec <= stack[stack.length - 2].prec)) {
                right = stack.pop();
                operator = stack.pop().value;
                left = stack.pop();
                expr = delegate.createBinaryExpression(operator, left, right);
                markers.pop();
                marker = markers.pop();
                markerApply(marker, expr);
                stack.push(expr);
                markers.push(marker);
            }

            // Shift.
            token = lex();
            token.prec = prec;
            stack.push(token);
            markers.push(markerCreate());
            expr = parseUnaryExpression();
            stack.push(expr);
        }

        state.allowIn = previousAllowIn;

        // Final reduce to clean-up the stack.
        i = stack.length - 1;
        expr = stack[i];
        markers.pop();
        while (i > 1) {
            expr = delegate.createBinaryExpression(stack[i - 1].value, stack[i - 2], expr);
            i -= 2;
            marker = markers.pop();
            markerApply(marker, expr);
        }

        return expr;
    }


    // 11.12 Conditional Operator

    function parseConditionalExpression() {
        var expr, previousAllowIn, consequent, alternate, marker = markerCreate();
        expr = parseBinaryExpression();

        if (match('?')) {
            lex();
            previousAllowIn = state.allowIn;
            state.allowIn = true;
            consequent = parseAssignmentExpression();
            state.allowIn = previousAllowIn;
            expect(':');
            alternate = parseAssignmentExpression();

            expr = markerApply(marker, delegate.createConditionalExpression(expr, consequent, alternate));
        }

        return expr;
    }

    // 11.13 Assignment Operators

    function reinterpretAsAssignmentBindingPattern(expr) {
        var i, len, property, element;

        if (expr.type === Syntax.ObjectExpression) {
            expr.type = Syntax.ObjectPattern;
            for (i = 0, len = expr.properties.length; i < len; i += 1) {
                property = expr.properties[i];
                if (property.type === Syntax.SpreadProperty) {
                    if (i < len - 1) {
                        throwError({}, Messages.PropertyAfterSpreadProperty);
                    }
                    reinterpretAsAssignmentBindingPattern(property.argument);
                } else {
                    if (property.kind !== 'init') {
                        throwError({}, Messages.InvalidLHSInAssignment);
                    }
                    reinterpretAsAssignmentBindingPattern(property.value);
                }
            }
        } else if (expr.type === Syntax.ArrayExpression) {
            expr.type = Syntax.ArrayPattern;
            for (i = 0, len = expr.elements.length; i < len; i += 1) {
                element = expr.elements[i];
                if (element) {
                    reinterpretAsAssignmentBindingPattern(element);
                }
            }
        } else if (expr.type === Syntax.Identifier) {
            if (isRestrictedWord(expr.name)) {
                throwError({}, Messages.InvalidLHSInAssignment);
            }
        } else if (expr.type === Syntax.SpreadElement) {
            reinterpretAsAssignmentBindingPattern(expr.argument);
            if (expr.argument.type === Syntax.ObjectPattern) {
                throwError({}, Messages.ObjectPatternAsSpread);
            }
        } else {
            if (expr.type !== Syntax.MemberExpression && expr.type !== Syntax.CallExpression && expr.type !== Syntax.NewExpression) {
                throwError({}, Messages.InvalidLHSInAssignment);
            }
        }
    }


    function reinterpretAsDestructuredParameter(options, expr) {
        var i, len, property, element;

        if (expr.type === Syntax.ObjectExpression) {
            expr.type = Syntax.ObjectPattern;
            for (i = 0, len = expr.properties.length; i < len; i += 1) {
                property = expr.properties[i];
                if (property.type === Syntax.SpreadProperty) {
                    if (i < len - 1) {
                        throwError({}, Messages.PropertyAfterSpreadProperty);
                    }
                    reinterpretAsDestructuredParameter(options, property.argument);
                } else {
                    if (property.kind !== 'init') {
                        throwError({}, Messages.InvalidLHSInFormalsList);
                    }
                    reinterpretAsDestructuredParameter(options, property.value);
                }
            }
        } else if (expr.type === Syntax.ArrayExpression) {
            expr.type = Syntax.ArrayPattern;
            for (i = 0, len = expr.elements.length; i < len; i += 1) {
                element = expr.elements[i];
                if (element) {
                    reinterpretAsDestructuredParameter(options, element);
                }
            }
        } else if (expr.type === Syntax.Identifier) {
            validateParam(options, expr, expr.name);
        } else {
            if (expr.type !== Syntax.MemberExpression) {
                throwError({}, Messages.InvalidLHSInFormalsList);
            }
        }
    }

    function reinterpretAsCoverFormalsList(expressions) {
        var i, len, param, params, defaults, defaultCount, options, rest;

        params = [];
        defaults = [];
        defaultCount = 0;
        rest = null;
        options = {
            paramSet: {}
        };

        for (i = 0, len = expressions.length; i < len; i += 1) {
            param = expressions[i];
            if (param.type === Syntax.Identifier) {
                params.push(param);
                defaults.push(null);
                validateParam(options, param, param.name);
            } else if (param.type === Syntax.ObjectExpression || param.type === Syntax.ArrayExpression) {
                reinterpretAsDestructuredParameter(options, param);
                params.push(param);
                defaults.push(null);
            } else if (param.type === Syntax.SpreadElement) {
                assert(i === len - 1, 'It is guaranteed that SpreadElement is last element by parseExpression');
                reinterpretAsDestructuredParameter(options, param.argument);
                rest = param.argument;
            } else if (param.type === Syntax.AssignmentExpression) {
                params.push(param.left);
                defaults.push(param.right);
                ++defaultCount;
                validateParam(options, param.left, param.left.name);
            } else {
                return null;
            }
        }

        if (options.message === Messages.StrictParamDupe) {
            throwError(
                strict ? options.stricted : options.firstRestricted,
                options.message
            );
        }

        if (defaultCount === 0) {
            defaults = [];
        }

        return {
            params: params,
            defaults: defaults,
            rest: rest,
            stricted: options.stricted,
            firstRestricted: options.firstRestricted,
            message: options.message
        };
    }

    function parseArrowFunctionExpression(options, marker) {
        var previousStrict, previousYieldAllowed, previousAwaitAllowed, body;

        expect('=>');

        previousStrict = strict;
        previousYieldAllowed = state.yieldAllowed;
        state.yieldAllowed = false;
        previousAwaitAllowed = state.awaitAllowed;
        state.awaitAllowed = !!options.async;
        body = parseConciseBody();

        if (strict && options.firstRestricted) {
            throwError(options.firstRestricted, options.message);
        }
        if (strict && options.stricted) {
            throwErrorTolerant(options.stricted, options.message);
        }

        strict = previousStrict;
        state.yieldAllowed = previousYieldAllowed;
        state.awaitAllowed = previousAwaitAllowed;

        return markerApply(marker, delegate.createArrowFunctionExpression(
            options.params,
            options.defaults,
            body,
            options.rest,
            body.type !== Syntax.BlockStatement,
            !!options.async
        ));
    }

    function parseAssignmentExpression() {
        var marker, expr, token, params, oldParenthesizedCount,
            backtrackToken = lookahead, possiblyAsync = false;

        if (matchYield()) {
            return parseYieldExpression();
        }

        if (matchAwait()) {
            return parseAwaitExpression();
        }

        oldParenthesizedCount = state.parenthesizedCount;

        marker = markerCreate();

        if (matchAsyncFuncExprOrDecl()) {
            return parseFunctionExpression();
        }

        if (matchAsync()) {
            // We can't be completely sure that this 'async' token is
            // actually a contextual keyword modifying a function
            // expression, so we might have to un-lex() it later by
            // calling rewind(backtrackToken).
            possiblyAsync = true;
            lex();
        }

        if (match('(')) {
            token = lookahead2();
            if ((token.type === Token.Punctuator && token.value === ')') || token.value === '...') {
                params = parseParams();
                if (!match('=>')) {
                    throwUnexpected(lex());
                }
                params.async = possiblyAsync;
                return parseArrowFunctionExpression(params, marker);
            }
        }

        token = lookahead;

        // If the 'async' keyword is not followed by a '(' character or an
        // identifier, then it can't be an arrow function modifier, and we
        // should interpret it as a normal identifer.
        if (possiblyAsync && !match('(') && token.type !== Token.Identifier) {
            possiblyAsync = false;
            rewind(backtrackToken);
        }

        expr = parseConditionalExpression();

        if (match('=>') &&
                (state.parenthesizedCount === oldParenthesizedCount ||
                state.parenthesizedCount === (oldParenthesizedCount + 1))) {
            if (expr.type === Syntax.Identifier) {
                params = reinterpretAsCoverFormalsList([ expr ]);
            } else if (expr.type === Syntax.SequenceExpression) {
                params = reinterpretAsCoverFormalsList(expr.expressions);
            }
            if (params) {
                params.async = possiblyAsync;
                return parseArrowFunctionExpression(params, marker);
            }
        }

        // If we haven't returned by now, then the 'async' keyword was not
        // a function modifier, and we should rewind and interpret it as a
        // normal identifier.
        if (possiblyAsync) {
            possiblyAsync = false;
            rewind(backtrackToken);
            expr = parseConditionalExpression();
        }

        if (matchAssign()) {
            // 11.13.1
            if (strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)) {
                throwErrorTolerant(token, Messages.StrictLHSAssignment);
            }

            // ES.next draf 11.13 Runtime Semantics step 1
            if (match('=') && (expr.type === Syntax.ObjectExpression || expr.type === Syntax.ArrayExpression)) {
                reinterpretAsAssignmentBindingPattern(expr);
            } else if (!isLeftHandSide(expr)) {
                throwError({}, Messages.InvalidLHSInAssignment);
            }

            expr = markerApply(marker, delegate.createAssignmentExpression(lex().value, expr, parseAssignmentExpression()));
        }

        return expr;
    }

    // 11.14 Comma Operator

    function parseExpression() {
        var marker, expr, expressions, sequence, coverFormalsList, spreadFound, oldParenthesizedCount;

        oldParenthesizedCount = state.parenthesizedCount;

        marker = markerCreate();
        expr = parseAssignmentExpression();
        expressions = [ expr ];

        if (match(',')) {
            while (index < length) {
                if (!match(',')) {
                    break;
                }

                lex();
                expr = parseSpreadOrAssignmentExpression();
                expressions.push(expr);

                if (expr.type === Syntax.SpreadElement) {
                    spreadFound = true;
                    if (!match(')')) {
                        throwError({}, Messages.ElementAfterSpreadElement);
                    }
                    break;
                }
            }

            sequence = markerApply(marker, delegate.createSequenceExpression(expressions));
        }

        if (match('=>')) {
            // Do not allow nested parentheses on the LHS of the =>.
            if (state.parenthesizedCount === oldParenthesizedCount || state.parenthesizedCount === (oldParenthesizedCount + 1)) {
                expr = expr.type === Syntax.SequenceExpression ? expr.expressions : expressions;
                coverFormalsList = reinterpretAsCoverFormalsList(expr);
                if (coverFormalsList) {
                    return parseArrowFunctionExpression(coverFormalsList, marker);
                }
            }
            throwUnexpected(lex());
        }

        if (spreadFound && lookahead2().value !== '=>') {
            throwError({}, Messages.IllegalSpread);
        }

        return sequence || expr;
    }

    // 12.1 Block

    function parseStatementList() {
        var list = [],
            statement;

        while (index < length) {
            if (match('}')) {
                break;
            }
            statement = parseSourceElement();
            if (typeof statement === 'undefined') {
                break;
            }
            list.push(statement);
        }

        return list;
    }

    function parseBlock() {
        var block, marker = markerCreate();

        expect('{');

        block = parseStatementList();

        expect('}');

        return markerApply(marker, delegate.createBlockStatement(block));
    }

    // 12.2 Variable Statement

    function parseTypeParameterDeclaration() {
        var marker = markerCreate(), paramTypes = [];

        expect('<');
        while (!match('>')) {
            paramTypes.push(parseVariableIdentifier());
            if (!match('>')) {
                expect(',');
            }
        }
        expect('>');

        return markerApply(marker, delegate.createTypeParameterDeclaration(
            paramTypes
        ));
    }

    function parseTypeParameterInstantiation() {
        var marker = markerCreate(), oldInType = state.inType, paramTypes = [];

        state.inType = true;

        expect('<');
        while (!match('>')) {
            paramTypes.push(parseType());
            if (!match('>')) {
                expect(',');
            }
        }
        expect('>');

        state.inType = oldInType;

        return markerApply(marker, delegate.createTypeParameterInstantiation(
            paramTypes
        ));
    }

    function parseObjectTypeIndexer(marker, isStatic) {
        var id, key, value;

        expect('[');
        id = parseObjectPropertyKey();
        expect(':');
        key = parseType();
        expect(']');
        expect(':');
        value = parseType();

        return markerApply(marker, delegate.createObjectTypeIndexer(
            id,
            key,
            value,
            isStatic
        ));
    }

    function parseObjectTypeMethodish(marker) {
        var params = [], rest = null, returnType, typeParameters = null;
        if (match('<')) {
            typeParameters = parseTypeParameterDeclaration();
        }

        expect('(');
        while (lookahead.type === Token.Identifier) {
            params.push(parseFunctionTypeParam());
            if (!match(')')) {
                expect(',');
            }
        }

        if (match('...')) {
            lex();
            rest = parseFunctionTypeParam();
        }
        expect(')');
        expect(':');
        returnType = parseType();

        return markerApply(marker, delegate.createFunctionTypeAnnotation(
            params,
            returnType,
            rest,
            typeParameters
        ));
    }

    function parseObjectTypeMethod(marker, isStatic, key) {
        var optional = false, value;
        value = parseObjectTypeMethodish(marker);

        return markerApply(marker, delegate.createObjectTypeProperty(
            key,
            value,
            optional,
            isStatic
        ));
    }

    function parseObjectTypeCallProperty(marker, isStatic) {
        var valueMarker = markerCreate();
        return markerApply(marker, delegate.createObjectTypeCallProperty(
            parseObjectTypeMethodish(valueMarker),
            isStatic
        ));
    }

    function parseObjectType(allowStatic) {
        var callProperties = [], indexers = [], marker, optional = false,
            properties = [], property, propertyKey, propertyTypeAnnotation,
            token, isStatic;

        expect('{');

        while (!match('}')) {
            marker = markerCreate();
            if (allowStatic && matchContextualKeyword('static')) {
                token = lex();
                isStatic = true;
            }

            if (match('[')) {
                indexers.push(parseObjectTypeIndexer(marker, isStatic));
            } else if (match('(') || match('<')) {
                callProperties.push(parseObjectTypeCallProperty(marker, allowStatic));
            } else {
                if (isStatic && match(':')) {
                    propertyKey = markerApply(marker, delegate.createIdentifier(token));
                    throwErrorTolerant(token, Messages.StrictReservedWord);
                } else {
                    propertyKey = parseObjectPropertyKey();
                }
                if (match('<') || match('(')) {
                    // This is a method property
                    properties.push(parseObjectTypeMethod(marker, isStatic, propertyKey));
                } else {
                    if (match('?')) {
                        lex();
                        optional = true;
                    }
                    expect(':');
                    propertyTypeAnnotation = parseType();
                    properties.push(markerApply(marker, delegate.createObjectTypeProperty(
                        propertyKey,
                        propertyTypeAnnotation,
                        optional,
                        isStatic
                    )));
                }
            }

            if (match(';')) {
                lex();
            } else if (!match('}')) {
                throwUnexpected(lookahead);
            }
        }

        expect('}');

        return delegate.createObjectTypeAnnotation(
            properties,
            indexers,
            callProperties
        );
    }

    function parseGenericType() {
        var marker = markerCreate(), returnType = null,
            typeParameters = null, typeIdentifier,
            typeIdentifierMarker = markerCreate;

        typeIdentifier = parseVariableIdentifier();

        while (match('.')) {
            expect('.');
            typeIdentifier = markerApply(marker, delegate.createQualifiedTypeIdentifier(
                typeIdentifier,
                parseVariableIdentifier()
            ));
        }

        if (match('<')) {
            typeParameters = parseTypeParameterInstantiation();
        }

        return markerApply(marker, delegate.createGenericTypeAnnotation(
            typeIdentifier,
            typeParameters
        ));
    }

    function parseVoidType() {
        var marker = markerCreate();
        expectKeyword('void');
        return markerApply(marker, delegate.createVoidTypeAnnotation());
    }

    function parseTypeofType() {
        var argument, marker = markerCreate();
        expectKeyword('typeof');
        argument = parsePrimaryType();
        return markerApply(marker, delegate.createTypeofTypeAnnotation(
            argument
        ));
    }

    function parseTupleType() {
        var marker = markerCreate(), types = [];
        expect('[');
        // We allow trailing commas
        while (index < length && !match(']')) {
            types.push(parseType());
            if (match(']')) {
                break;
            }
            expect(',');
        }
        expect(']');
        return markerApply(marker, delegate.createTupleTypeAnnotation(
            types
        ));
    }

    function parseFunctionTypeParam() {
        var marker = markerCreate(), name, optional = false, typeAnnotation;
        name = parseVariableIdentifier();
        if (match('?')) {
            lex();
            optional = true;
        }
        expect(':');
        typeAnnotation = parseType();
        return markerApply(marker, delegate.createFunctionTypeParam(
            name,
            typeAnnotation,
            optional
        ));
    }

    function parseFunctionTypeParams() {
        var ret = { params: [], rest: null };
        while (lookahead.type === Token.Identifier) {
            ret.params.push(parseFunctionTypeParam());
            if (!match(')')) {
                expect(',');
            }
        }

        if (match('...')) {
            lex();
            ret.rest = parseFunctionTypeParam();
        }
        return ret;
    }

    // The parsing of types roughly parallels the parsing of expressions, and
    // primary types are kind of like primary expressions...they're the
    // primitives with which other types are constructed.
    function parsePrimaryType() {
        var typeIdentifier = null, params = null, returnType = null,
            marker = markerCreate(), rest = null, tmp,
            typeParameters, token, type, isGroupedType = false;

        switch (lookahead.type) {
        case Token.Identifier:
            switch (lookahead.value) {
            case 'any':
                lex();
                return markerApply(marker, delegate.createAnyTypeAnnotation());
            case 'bool':  // fallthrough
            case 'boolean':
                lex();
                return markerApply(marker, delegate.createBooleanTypeAnnotation());
            case 'number':
                lex();
                return markerApply(marker, delegate.createNumberTypeAnnotation());
            case 'string':
                lex();
                return markerApply(marker, delegate.createStringTypeAnnotation());
            }
            return markerApply(marker, parseGenericType());
        case Token.Punctuator:
            switch (lookahead.value) {
            case '{':
                return markerApply(marker, parseObjectType());
            case '[':
                return parseTupleType();
            case '<':
                typeParameters = parseTypeParameterDeclaration();
                expect('(');
                tmp = parseFunctionTypeParams();
                params = tmp.params;
                rest = tmp.rest;
                expect(')');

                expect('=>');

                returnType = parseType();

                return markerApply(marker, delegate.createFunctionTypeAnnotation(
                    params,
                    returnType,
                    rest,
                    typeParameters
                ));
            case '(':
                lex();
                // Check to see if this is actually a grouped type
                if (!match(')') && !match('...')) {
                    if (lookahead.type === Token.Identifier) {
                        token = lookahead2();
                        isGroupedType = token.value !== '?' && token.value !== ':';
                    } else {
                        isGroupedType = true;
                    }
                }

                if (isGroupedType) {
                    type = parseType();
                    expect(')');

                    // If we see a => next then someone was probably confused about
                    // function types, so we can provide a better error message
                    if (match('=>')) {
                        throwError({}, Messages.ConfusedAboutFunctionType);
                    }

                    return type;
                }

                tmp = parseFunctionTypeParams();
                params = tmp.params;
                rest = tmp.rest;

                expect(')');

                expect('=>');

                returnType = parseType();

                return markerApply(marker, delegate.createFunctionTypeAnnotation(
                    params,
                    returnType,
                    rest,
                    null /* typeParameters */
                ));
            }
            break;
        case Token.Keyword:
            switch (lookahead.value) {
            case 'void':
                return markerApply(marker, parseVoidType());
            case 'typeof':
                return markerApply(marker, parseTypeofType());
            }
            break;
        case Token.StringLiteral:
            token = lex();
            if (token.octal) {
                throwError(token, Messages.StrictOctalLiteral);
            }
            return markerApply(marker, delegate.createStringLiteralTypeAnnotation(
                token
            ));
        }

        throwUnexpected(lookahead);
    }

    function parsePostfixType() {
        var marker = markerCreate(), t = parsePrimaryType();
        if (match('[')) {
            expect('[');
            expect(']');
            return markerApply(marker, delegate.createArrayTypeAnnotation(t));
        }
        return t;
    }

    function parsePrefixType() {
        var marker = markerCreate();
        if (match('?')) {
            lex();
            return markerApply(marker, delegate.createNullableTypeAnnotation(
                parsePrefixType()
            ));
        }
        return parsePostfixType();
    }


    function parseIntersectionType() {
        var marker = markerCreate(), type, types;
        type = parsePrefixType();
        types = [type];
        while (match('&')) {
            lex();
            types.push(parsePrefixType());
        }

        return types.length === 1 ?
                type :
                markerApply(marker, delegate.createIntersectionTypeAnnotation(
                    types
                ));
    }

    function parseUnionType() {
        var marker = markerCreate(), type, types;
        type = parseIntersectionType();
        types = [type];
        while (match('|')) {
            lex();
            types.push(parseIntersectionType());
        }
        return types.length === 1 ?
                type :
                markerApply(marker, delegate.createUnionTypeAnnotation(
                    types
                ));
    }

    function parseType() {
        var oldInType = state.inType, type;
        state.inType = true;

        type = parseUnionType();

        state.inType = oldInType;
        return type;
    }

    function parseTypeAnnotation() {
        var marker = markerCreate(), type;

        expect(':');
        type = parseType();

        return markerApply(marker, delegate.createTypeAnnotation(type));
    }

    function parseVariableIdentifier() {
        var marker = markerCreate(),
            token = lex();

        if (token.type !== Token.Identifier) {
            throwUnexpected(token);
        }

        return markerApply(marker, delegate.createIdentifier(token.value));
    }

    function parseTypeAnnotatableIdentifier(requireTypeAnnotation, canBeOptionalParam) {
        var marker = markerCreate(),
            ident = parseVariableIdentifier(),
            isOptionalParam = false;

        if (canBeOptionalParam && match('?')) {
            expect('?');
            isOptionalParam = true;
        }

        if (requireTypeAnnotation || match(':')) {
            ident.typeAnnotation = parseTypeAnnotation();
            ident = markerApply(marker, ident);
        }

        if (isOptionalParam) {
            ident.optional = true;
            ident = markerApply(marker, ident);
        }

        return ident;
    }

    function parseVariableDeclaration(kind) {
        var id,
            marker = markerCreate(),
            init = null,
            typeAnnotationMarker = markerCreate();
        if (match('{')) {
            id = parseObjectInitialiser();
            reinterpretAsAssignmentBindingPattern(id);
            if (match(':')) {
                id.typeAnnotation = parseTypeAnnotation();
                markerApply(typeAnnotationMarker, id);
            }
        } else if (match('[')) {
            id = parseArrayInitialiser();
            reinterpretAsAssignmentBindingPattern(id);
            if (match(':')) {
                id.typeAnnotation = parseTypeAnnotation();
                markerApply(typeAnnotationMarker, id);
            }
        } else {
            id = state.allowKeyword ? parseNonComputedProperty() : parseTypeAnnotatableIdentifier();
            // 12.2.1
            if (strict && isRestrictedWord(id.name)) {
                throwErrorTolerant({}, Messages.StrictVarName);
            }
        }

        if (kind === 'const') {
            if (!match('=')) {
                throwError({}, Messages.NoUnintializedConst);
            }
            expect('=');
            init = parseAssignmentExpression();
        } else if (match('=')) {
            lex();
            init = parseAssignmentExpression();
        }

        return markerApply(marker, delegate.createVariableDeclarator(id, init));
    }

    function parseVariableDeclarationList(kind) {
        var list = [];

        do {
            list.push(parseVariableDeclaration(kind));
            if (!match(',')) {
                break;
            }
            lex();
        } while (index < length);

        return list;
    }

    function parseVariableStatement() {
        var declarations, marker = markerCreate();

        expectKeyword('var');

        declarations = parseVariableDeclarationList();

        consumeSemicolon();

        return markerApply(marker, delegate.createVariableDeclaration(declarations, 'var'));
    }

    // kind may be `const` or `let`
    // Both are experimental and not in the specification yet.
    // see http://wiki.ecmascript.org/doku.php?id=harmony:const
    // and http://wiki.ecmascript.org/doku.php?id=harmony:let
    function parseConstLetDeclaration(kind) {
        var declarations, marker = markerCreate();

        expectKeyword(kind);

        declarations = parseVariableDeclarationList(kind);

        consumeSemicolon();

        return markerApply(marker, delegate.createVariableDeclaration(declarations, kind));
    }

    // people.mozilla.org/~jorendorff/es6-draft.html

    function parseModuleSpecifier() {
        var marker = markerCreate(),
            specifier;

        if (lookahead.type !== Token.StringLiteral) {
            throwError({}, Messages.InvalidModuleSpecifier);
        }
        specifier = delegate.createModuleSpecifier(lookahead);
        lex();
        return markerApply(marker, specifier);
    }

    function parseExportBatchSpecifier() {
        var marker = markerCreate();
        expect('*');
        return markerApply(marker, delegate.createExportBatchSpecifier());
    }

    function parseExportSpecifier() {
        var id, name = null, marker = markerCreate(), from;
        if (matchKeyword('default')) {
            lex();
            id = markerApply(marker, delegate.createIdentifier('default'));
            // export {default} from "something";
        } else {
            id = parseVariableIdentifier();
        }
        if (matchContextualKeyword('as')) {
            lex();
            name = parseNonComputedProperty();
        }

        return markerApply(marker, delegate.createExportSpecifier(id, name));
    }

    function parseExportDeclaration() {
        var backtrackToken, id, previousAllowKeyword, declaration = null,
            isExportFromIdentifier,
            src = null, specifiers = [],
            marker = markerCreate();

        expectKeyword('export');

        if (matchKeyword('default')) {
            // covers:
            // export default ...
            lex();
            if (matchKeyword('function') || matchKeyword('class')) {
                backtrackToken = lookahead;
                lex();
                if (isIdentifierName(lookahead)) {
                    // covers:
                    // export default function foo () {}
                    // export default class foo {}
                    id = parseNonComputedProperty();
                    rewind(backtrackToken);
                    return markerApply(marker, delegate.createExportDeclaration(true, parseSourceElement(), [id], null));
                }
                // covers:
                // export default function () {}
                // export default class {}
                rewind(backtrackToken);
                switch (lookahead.value) {
                case 'class':
                    return markerApply(marker, delegate.createExportDeclaration(true, parseClassExpression(), [], null));
                case 'function':
                    return markerApply(marker, delegate.createExportDeclaration(true, parseFunctionExpression(), [], null));
                }
            }

            if (matchContextualKeyword('from')) {
                throwError({}, Messages.UnexpectedToken, lookahead.value);
            }

            // covers:
            // export default {};
            // export default [];
            if (match('{')) {
                declaration = parseObjectInitialiser();
            } else if (match('[')) {
                declaration = parseArrayInitialiser();
            } else {
                declaration = parseAssignmentExpression();
            }
            consumeSemicolon();
            return markerApply(marker, delegate.createExportDeclaration(true, declaration, [], null));
        }

        // non-default export
        if (lookahead.type === Token.Keyword) {
            // covers:
            // export var f = 1;
            switch (lookahead.value) {
            case 'let':
            case 'const':
            case 'var':
            case 'class':
            case 'function':
                return markerApply(marker, delegate.createExportDeclaration(false, parseSourceElement(), specifiers, null));
            }
        }

        if (match('*')) {
            // covers:
            // export * from "foo";
            specifiers.push(parseExportBatchSpecifier());

            if (!matchContextualKeyword('from')) {
                throwError({}, lookahead.value ?
                        Messages.UnexpectedToken : Messages.MissingFromClause, lookahead.value);
            }
            lex();
            src = parseModuleSpecifier();
            consumeSemicolon();

            return markerApply(marker, delegate.createExportDeclaration(false, null, specifiers, src));
        }

        expect('{');
        do {
            isExportFromIdentifier = isExportFromIdentifier || matchKeyword('default');
            specifiers.push(parseExportSpecifier());
        } while (match(',') && lex());
        expect('}');

        if (matchContextualKeyword('from')) {
            // covering:
            // export {default} from "foo";
            // export {foo} from "foo";
            lex();
            src = parseModuleSpecifier();
            consumeSemicolon();
        } else if (isExportFromIdentifier) {
            // covering:
            // export {default}; // missing fromClause
            throwError({}, lookahead.value ?
                    Messages.UnexpectedToken : Messages.MissingFromClause, lookahead.value);
        } else {
            // cover
            // export {foo};
            consumeSemicolon();
        }
        return markerApply(marker, delegate.createExportDeclaration(false, declaration, specifiers, src));
    }


    function parseImportSpecifier() {
        // import {<foo as bar>} ...;
        var id, name = null, marker = markerCreate();

        id = parseNonComputedProperty();
        if (matchContextualKeyword('as')) {
            lex();
            name = parseVariableIdentifier();
        }

        return markerApply(marker, delegate.createImportSpecifier(id, name));
    }

    function parseNamedImports() {
        var specifiers = [];
        // {foo, bar as bas}
        expect('{');
        do {
            specifiers.push(parseImportSpecifier());
        } while (match(',') && lex());
        expect('}');
        return specifiers;
    }

    function parseImportDefaultSpecifier() {
        // import <foo> ...;
        var id, marker = markerCreate();

        id = parseNonComputedProperty();

        return markerApply(marker, delegate.createImportDefaultSpecifier(id));
    }

    function parseImportNamespaceSpecifier() {
        // import <* as foo> ...;
        var id, marker = markerCreate();

        expect('*');
        if (!matchContextualKeyword('as')) {
            throwError({}, Messages.NoAsAfterImportNamespace);
        }
        lex();
        id = parseNonComputedProperty();

        return markerApply(marker, delegate.createImportNamespaceSpecifier(id));
    }

    function parseImportDeclaration() {
        var specifiers, src, marker = markerCreate();

        expectKeyword('import');
        specifiers = [];

        if (lookahead.type === Token.StringLiteral) {
            // covers:
            // import "foo";
            src = parseModuleSpecifier();
            consumeSemicolon();
            return markerApply(marker, delegate.createImportDeclaration(specifiers, src));
        }

        if (!matchKeyword('default') && isIdentifierName(lookahead)) {
            // covers:
            // import foo
            // import foo, ...
            specifiers.push(parseImportDefaultSpecifier());
            if (match(',')) {
                lex();
            }
        }
        if (match('*')) {
            // covers:
            // import foo, * as foo
            // import * as foo
            specifiers.push(parseImportNamespaceSpecifier());
        } else if (match('{')) {
            // covers:
            // import foo, {bar}
            // import {bar}
            specifiers = specifiers.concat(parseNamedImports());
        }

        if (!matchContextualKeyword('from')) {
            throwError({}, lookahead.value ?
                    Messages.UnexpectedToken : Messages.MissingFromClause, lookahead.value);
        }
        lex();
        src = parseModuleSpecifier();
        consumeSemicolon();

        return markerApply(marker, delegate.createImportDeclaration(specifiers, src));
    }

    // 12.3 Empty Statement

    function parseEmptyStatement() {
        var marker = markerCreate();
        expect(';');
        return markerApply(marker, delegate.createEmptyStatement());
    }

    // 12.4 Expression Statement

    function parseExpressionStatement() {
        var marker = markerCreate(), expr = parseExpression();
        consumeSemicolon();
        return markerApply(marker, delegate.createExpressionStatement(expr));
    }

    // 12.5 If statement

    function parseIfStatement() {
        var test, consequent, alternate, marker = markerCreate();

        expectKeyword('if');

        expect('(');

        test = parseExpression();

        expect(')');

        consequent = parseStatement();

        if (matchKeyword('else')) {
            lex();
            alternate = parseStatement();
        } else {
            alternate = null;
        }

        return markerApply(marker, delegate.createIfStatement(test, consequent, alternate));
    }

    // 12.6 Iteration Statements

    function parseDoWhileStatement() {
        var body, test, oldInIteration, marker = markerCreate();

        expectKeyword('do');

        oldInIteration = state.inIteration;
        state.inIteration = true;

        body = parseStatement();

        state.inIteration = oldInIteration;

        expectKeyword('while');

        expect('(');

        test = parseExpression();

        expect(')');

        if (match(';')) {
            lex();
        }

        return markerApply(marker, delegate.createDoWhileStatement(body, test));
    }

    function parseWhileStatement() {
        var test, body, oldInIteration, marker = markerCreate();

        expectKeyword('while');

        expect('(');

        test = parseExpression();

        expect(')');

        oldInIteration = state.inIteration;
        state.inIteration = true;

        body = parseStatement();

        state.inIteration = oldInIteration;

        return markerApply(marker, delegate.createWhileStatement(test, body));
    }

    function parseForVariableDeclaration() {
        var marker = markerCreate(),
            token = lex(),
            declarations = parseVariableDeclarationList();

        return markerApply(marker, delegate.createVariableDeclaration(declarations, token.value));
    }

    function parseForStatement(opts) {
        var init, test, update, left, right, body, operator, oldInIteration,
            marker = markerCreate();
        init = test = update = null;
        expectKeyword('for');

        // http://wiki.ecmascript.org/doku.php?id=proposals:iterators_and_generators&s=each
        if (matchContextualKeyword('each')) {
            throwError({}, Messages.EachNotAllowed);
        }

        expect('(');

        if (match(';')) {
            lex();
        } else {
            if (matchKeyword('var') || matchKeyword('let') || matchKeyword('const')) {
                state.allowIn = false;
                init = parseForVariableDeclaration();
                state.allowIn = true;

                if (init.declarations.length === 1) {
                    if (matchKeyword('in') || matchContextualKeyword('of')) {
                        operator = lookahead;
                        if (!((operator.value === 'in' || init.kind !== 'var') && init.declarations[0].init)) {
                            lex();
                            left = init;
                            right = parseExpression();
                            init = null;
                        }
                    }
                }
            } else {
                state.allowIn = false;
                init = parseExpression();
                state.allowIn = true;

                if (matchContextualKeyword('of')) {
                    operator = lex();
                    left = init;
                    right = parseExpression();
                    init = null;
                } else if (matchKeyword('in')) {
                    // LeftHandSideExpression
                    if (!isAssignableLeftHandSide(init)) {
                        throwError({}, Messages.InvalidLHSInForIn);
                    }
                    operator = lex();
                    left = init;
                    right = parseExpression();
                    init = null;
                }
            }

            if (typeof left === 'undefined') {
                expect(';');
            }
        }

        if (typeof left === 'undefined') {

            if (!match(';')) {
                test = parseExpression();
            }
            expect(';');

            if (!match(')')) {
                update = parseExpression();
            }
        }

        expect(')');

        oldInIteration = state.inIteration;
        state.inIteration = true;

        if (!(opts !== undefined && opts.ignoreBody)) {
            body = parseStatement();
        }

        state.inIteration = oldInIteration;

        if (typeof left === 'undefined') {
            return markerApply(marker, delegate.createForStatement(init, test, update, body));
        }

        if (operator.value === 'in') {
            return markerApply(marker, delegate.createForInStatement(left, right, body));
        }
        return markerApply(marker, delegate.createForOfStatement(left, right, body));
    }

    // 12.7 The continue statement

    function parseContinueStatement() {
        var label = null, key, marker = markerCreate();

        expectKeyword('continue');

        // Optimize the most common form: 'continue;'.
        if (source.charCodeAt(index) === 59) {
            lex();

            if (!state.inIteration) {
                throwError({}, Messages.IllegalContinue);
            }

            return markerApply(marker, delegate.createContinueStatement(null));
        }

        if (peekLineTerminator()) {
            if (!state.inIteration) {
                throwError({}, Messages.IllegalContinue);
            }

            return markerApply(marker, delegate.createContinueStatement(null));
        }

        if (lookahead.type === Token.Identifier) {
            label = parseVariableIdentifier();

            key = '$' + label.name;
            if (!Object.prototype.hasOwnProperty.call(state.labelSet, key)) {
                throwError({}, Messages.UnknownLabel, label.name);
            }
        }

        consumeSemicolon();

        if (label === null && !state.inIteration) {
            throwError({}, Messages.IllegalContinue);
        }

        return markerApply(marker, delegate.createContinueStatement(label));
    }

    // 12.8 The break statement

    function parseBreakStatement() {
        var label = null, key, marker = markerCreate();

        expectKeyword('break');

        // Catch the very common case first: immediately a semicolon (char #59).
        if (source.charCodeAt(index) === 59) {
            lex();

            if (!(state.inIteration || state.inSwitch)) {
                throwError({}, Messages.IllegalBreak);
            }

            return markerApply(marker, delegate.createBreakStatement(null));
        }

        if (peekLineTerminator()) {
            if (!(state.inIteration || state.inSwitch)) {
                throwError({}, Messages.IllegalBreak);
            }

            return markerApply(marker, delegate.createBreakStatement(null));
        }

        if (lookahead.type === Token.Identifier) {
            label = parseVariableIdentifier();

            key = '$' + label.name;
            if (!Object.prototype.hasOwnProperty.call(state.labelSet, key)) {
                throwError({}, Messages.UnknownLabel, label.name);
            }
        }

        consumeSemicolon();

        if (label === null && !(state.inIteration || state.inSwitch)) {
            throwError({}, Messages.IllegalBreak);
        }

        return markerApply(marker, delegate.createBreakStatement(label));
    }

    // 12.9 The return statement

    function parseReturnStatement() {
        var argument = null, marker = markerCreate();

        expectKeyword('return');

        if (!state.inFunctionBody) {
            throwErrorTolerant({}, Messages.IllegalReturn);
        }

        // 'return' followed by a space and an identifier is very common.
        if (source.charCodeAt(index) === 32) {
            if (isIdentifierStart(source.charCodeAt(index + 1))) {
                argument = parseExpression();
                consumeSemicolon();
                return markerApply(marker, delegate.createReturnStatement(argument));
            }
        }

        if (peekLineTerminator()) {
            return markerApply(marker, delegate.createReturnStatement(null));
        }

        if (!match(';')) {
            if (!match('}') && lookahead.type !== Token.EOF) {
                argument = parseExpression();
            }
        }

        consumeSemicolon();

        return markerApply(marker, delegate.createReturnStatement(argument));
    }

    // 12.10 The with statement

    function parseWithStatement() {
        var object, body, marker = markerCreate();

        if (strict) {
            throwErrorTolerant({}, Messages.StrictModeWith);
        }

        expectKeyword('with');

        expect('(');

        object = parseExpression();

        expect(')');

        body = parseStatement();

        return markerApply(marker, delegate.createWithStatement(object, body));
    }

    // 12.10 The swith statement

    function parseSwitchCase() {
        var test,
            consequent = [],
            sourceElement,
            marker = markerCreate();

        if (matchKeyword('default')) {
            lex();
            test = null;
        } else {
            expectKeyword('case');
            test = parseExpression();
        }
        expect(':');

        while (index < length) {
            if (match('}') || matchKeyword('default') || matchKeyword('case')) {
                break;
            }
            sourceElement = parseSourceElement();
            if (typeof sourceElement === 'undefined') {
                break;
            }
            consequent.push(sourceElement);
        }

        return markerApply(marker, delegate.createSwitchCase(test, consequent));
    }

    function parseSwitchStatement() {
        var discriminant, cases, clause, oldInSwitch, defaultFound, marker = markerCreate();

        expectKeyword('switch');

        expect('(');

        discriminant = parseExpression();

        expect(')');

        expect('{');

        cases = [];

        if (match('}')) {
            lex();
            return markerApply(marker, delegate.createSwitchStatement(discriminant, cases));
        }

        oldInSwitch = state.inSwitch;
        state.inSwitch = true;
        defaultFound = false;

        while (index < length) {
            if (match('}')) {
                break;
            }
            clause = parseSwitchCase();
            if (clause.test === null) {
                if (defaultFound) {
                    throwError({}, Messages.MultipleDefaultsInSwitch);
                }
                defaultFound = true;
            }
            cases.push(clause);
        }

        state.inSwitch = oldInSwitch;

        expect('}');

        return markerApply(marker, delegate.createSwitchStatement(discriminant, cases));
    }

    // 12.13 The throw statement

    function parseThrowStatement() {
        var argument, marker = markerCreate();

        expectKeyword('throw');

        if (peekLineTerminator()) {
            throwError({}, Messages.NewlineAfterThrow);
        }

        argument = parseExpression();

        consumeSemicolon();

        return markerApply(marker, delegate.createThrowStatement(argument));
    }

    // 12.14 The try statement

    function parseCatchClause() {
        var param, body, marker = markerCreate();

        expectKeyword('catch');

        expect('(');
        if (match(')')) {
            throwUnexpected(lookahead);
        }

        param = parseExpression();
        // 12.14.1
        if (strict && param.type === Syntax.Identifier && isRestrictedWord(param.name)) {
            throwErrorTolerant({}, Messages.StrictCatchVariable);
        }

        expect(')');
        body = parseBlock();
        return markerApply(marker, delegate.createCatchClause(param, body));
    }

    function parseTryStatement() {
        var block, handlers = [], finalizer = null, marker = markerCreate();

        expectKeyword('try');

        block = parseBlock();

        if (matchKeyword('catch')) {
            handlers.push(parseCatchClause());
        }

        if (matchKeyword('finally')) {
            lex();
            finalizer = parseBlock();
        }

        if (handlers.length === 0 && !finalizer) {
            throwError({}, Messages.NoCatchOrFinally);
        }

        return markerApply(marker, delegate.createTryStatement(block, [], handlers, finalizer));
    }

    // 12.15 The debugger statement

    function parseDebuggerStatement() {
        var marker = markerCreate();
        expectKeyword('debugger');

        consumeSemicolon();

        return markerApply(marker, delegate.createDebuggerStatement());
    }

    // 12 Statements

    function parseStatement() {
        var type = lookahead.type,
            marker,
            expr,
            labeledBody,
            key;

        if (type === Token.EOF) {
            throwUnexpected(lookahead);
        }

        if (type === Token.Punctuator) {
            switch (lookahead.value) {
            case ';':
                return parseEmptyStatement();
            case '{':
                return parseBlock();
            case '(':
                return parseExpressionStatement();
            default:
                break;
            }
        }

        if (type === Token.Keyword) {
            switch (lookahead.value) {
            case 'break':
                return parseBreakStatement();
            case 'continue':
                return parseContinueStatement();
            case 'debugger':
                return parseDebuggerStatement();
            case 'do':
                return parseDoWhileStatement();
            case 'for':
                return parseForStatement();
            case 'function':
                return parseFunctionDeclaration();
            case 'class':
                return parseClassDeclaration();
            case 'if':
                return parseIfStatement();
            case 'return':
                return parseReturnStatement();
            case 'switch':
                return parseSwitchStatement();
            case 'throw':
                return parseThrowStatement();
            case 'try':
                return parseTryStatement();
            case 'var':
                return parseVariableStatement();
            case 'while':
                return parseWhileStatement();
            case 'with':
                return parseWithStatement();
            default:
                break;
            }
        }

        if (matchAsyncFuncExprOrDecl()) {
            return parseFunctionDeclaration();
        }

        marker = markerCreate();
        expr = parseExpression();

        // 12.12 Labelled Statements
        if ((expr.type === Syntax.Identifier) && match(':')) {
            lex();

            key = '$' + expr.name;
            if (Object.prototype.hasOwnProperty.call(state.labelSet, key)) {
                throwError({}, Messages.Redeclaration, 'Label', expr.name);
            }

            state.labelSet[key] = true;
            labeledBody = parseStatement();
            delete state.labelSet[key];
            return markerApply(marker, delegate.createLabeledStatement(expr, labeledBody));
        }

        consumeSemicolon();

        return markerApply(marker, delegate.createExpressionStatement(expr));
    }

    // 13 Function Definition

    function parseConciseBody() {
        if (match('{')) {
            return parseFunctionSourceElements();
        }
        return parseAssignmentExpression();
    }

    function parseFunctionSourceElements() {
        var sourceElement, sourceElements = [], token, directive, firstRestricted,
            oldLabelSet, oldInIteration, oldInSwitch, oldInFunctionBody, oldParenthesizedCount,
            marker = markerCreate();

        expect('{');

        while (index < length) {
            if (lookahead.type !== Token.StringLiteral) {
                break;
            }
            token = lookahead;

            sourceElement = parseSourceElement();
            sourceElements.push(sourceElement);
            if (sourceElement.expression.type !== Syntax.Literal) {
                // this is not directive
                break;
            }
            directive = source.slice(token.range[0] + 1, token.range[1] - 1);
            if (directive === 'use strict') {
                strict = true;
                if (firstRestricted) {
                    throwErrorTolerant(firstRestricted, Messages.StrictOctalLiteral);
                }
            } else {
                if (!firstRestricted && token.octal) {
                    firstRestricted = token;
                }
            }
        }

        oldLabelSet = state.labelSet;
        oldInIteration = state.inIteration;
        oldInSwitch = state.inSwitch;
        oldInFunctionBody = state.inFunctionBody;
        oldParenthesizedCount = state.parenthesizedCount;

        state.labelSet = {};
        state.inIteration = false;
        state.inSwitch = false;
        state.inFunctionBody = true;
        state.parenthesizedCount = 0;

        while (index < length) {
            if (match('}')) {
                break;
            }
            sourceElement = parseSourceElement();
            if (typeof sourceElement === 'undefined') {
                break;
            }
            sourceElements.push(sourceElement);
        }

        expect('}');

        state.labelSet = oldLabelSet;
        state.inIteration = oldInIteration;
        state.inSwitch = oldInSwitch;
        state.inFunctionBody = oldInFunctionBody;
        state.parenthesizedCount = oldParenthesizedCount;

        return markerApply(marker, delegate.createBlockStatement(sourceElements));
    }

    function validateParam(options, param, name) {
        var key = '$' + name;
        if (strict) {
            if (isRestrictedWord(name)) {
                options.stricted = param;
                options.message = Messages.StrictParamName;
            }
            if (Object.prototype.hasOwnProperty.call(options.paramSet, key)) {
                options.stricted = param;
                options.message = Messages.StrictParamDupe;
            }
        } else if (!options.firstRestricted) {
            if (isRestrictedWord(name)) {
                options.firstRestricted = param;
                options.message = Messages.StrictParamName;
            } else if (isStrictModeReservedWord(name)) {
                options.firstRestricted = param;
                options.message = Messages.StrictReservedWord;
            } else if (Object.prototype.hasOwnProperty.call(options.paramSet, key)) {
                options.firstRestricted = param;
                options.message = Messages.StrictParamDupe;
            }
        }
        options.paramSet[key] = true;
    }

    function parseParam(options) {
        var marker, token, rest, param, def;

        token = lookahead;
        if (token.value === '...') {
            token = lex();
            rest = true;
        }

        if (match('[')) {
            marker = markerCreate();
            param = parseArrayInitialiser();
            reinterpretAsDestructuredParameter(options, param);
            if (match(':')) {
                param.typeAnnotation = parseTypeAnnotation();
                markerApply(marker, param);
            }
        } else if (match('{')) {
            marker = markerCreate();
            if (rest) {
                throwError({}, Messages.ObjectPatternAsRestParameter);
            }
            param = parseObjectInitialiser();
            reinterpretAsDestructuredParameter(options, param);
            if (match(':')) {
                param.typeAnnotation = parseTypeAnnotation();
                markerApply(marker, param);
            }
        } else {
            param =
                rest
                ? parseTypeAnnotatableIdentifier(
                    false, /* requireTypeAnnotation */
                    false /* canBeOptionalParam */
                )
                : parseTypeAnnotatableIdentifier(
                    false, /* requireTypeAnnotation */
                    true /* canBeOptionalParam */
                );

            validateParam(options, token, token.value);
        }

        if (match('=')) {
            if (rest) {
                throwErrorTolerant(lookahead, Messages.DefaultRestParameter);
            }
            lex();
            def = parseAssignmentExpression();
            ++options.defaultCount;
        }

        if (rest) {
            if (!match(')')) {
                throwError({}, Messages.ParameterAfterRestParameter);
            }
            options.rest = param;
            return false;
        }

        options.params.push(param);
        options.defaults.push(def);
        return !match(')');
    }

    function parseParams(firstRestricted) {
        var options, marker = markerCreate();

        options = {
            params: [],
            defaultCount: 0,
            defaults: [],
            rest: null,
            firstRestricted: firstRestricted
        };

        expect('(');

        if (!match(')')) {
            options.paramSet = {};
            while (index < length) {
                if (!parseParam(options)) {
                    break;
                }
                expect(',');
            }
        }

        expect(')');

        if (options.defaultCount === 0) {
            options.defaults = [];
        }

        if (match(':')) {
            options.returnType = parseTypeAnnotation();
        }

        return markerApply(marker, options);
    }

    function parseFunctionDeclaration() {
        var id, body, token, tmp, firstRestricted, message, generator, isAsync,
            previousStrict, previousYieldAllowed, previousAwaitAllowed,
            marker = markerCreate(), typeParameters;

        isAsync = false;
        if (matchAsync()) {
            lex();
            isAsync = true;
        }

        expectKeyword('function');

        generator = false;
        if (match('*')) {
            lex();
            generator = true;
        }

        token = lookahead;

        id = parseVariableIdentifier();

        if (match('<')) {
            typeParameters = parseTypeParameterDeclaration();
        }

        if (strict) {
            if (isRestrictedWord(token.value)) {
                throwErrorTolerant(token, Messages.StrictFunctionName);
            }
        } else {
            if (isRestrictedWord(token.value)) {
                firstRestricted = token;
                message = Messages.StrictFunctionName;
            } else if (isStrictModeReservedWord(token.value)) {
                firstRestricted = token;
                message = Messages.StrictReservedWord;
            }
        }

        tmp = parseParams(firstRestricted);
        firstRestricted = tmp.firstRestricted;
        if (tmp.message) {
            message = tmp.message;
        }

        previousStrict = strict;
        previousYieldAllowed = state.yieldAllowed;
        state.yieldAllowed = generator;
        previousAwaitAllowed = state.awaitAllowed;
        state.awaitAllowed = isAsync;

        body = parseFunctionSourceElements();

        if (strict && firstRestricted) {
            throwError(firstRestricted, message);
        }
        if (strict && tmp.stricted) {
            throwErrorTolerant(tmp.stricted, message);
        }
        strict = previousStrict;
        state.yieldAllowed = previousYieldAllowed;
        state.awaitAllowed = previousAwaitAllowed;

        return markerApply(
            marker,
            delegate.createFunctionDeclaration(
                id,
                tmp.params,
                tmp.defaults,
                body,
                tmp.rest,
                generator,
                false,
                isAsync,
                tmp.returnType,
                typeParameters
            )
        );
    }

    function parseFunctionExpression() {
        var token, id = null, firstRestricted, message, tmp, body, generator, isAsync,
            previousStrict, previousYieldAllowed, previousAwaitAllowed,
            marker = markerCreate(), typeParameters;

        isAsync = false;
        if (matchAsync()) {
            lex();
            isAsync = true;
        }

        expectKeyword('function');

        generator = false;

        if (match('*')) {
            lex();
            generator = true;
        }

        if (!match('(')) {
            if (!match('<')) {
                token = lookahead;
                id = parseVariableIdentifier();

                if (strict) {
                    if (isRestrictedWord(token.value)) {
                        throwErrorTolerant(token, Messages.StrictFunctionName);
                    }
                } else {
                    if (isRestrictedWord(token.value)) {
                        firstRestricted = token;
                        message = Messages.StrictFunctionName;
                    } else if (isStrictModeReservedWord(token.value)) {
                        firstRestricted = token;
                        message = Messages.StrictReservedWord;
                    }
                }
            }

            if (match('<')) {
                typeParameters = parseTypeParameterDeclaration();
            }
        }

        tmp = parseParams(firstRestricted);
        firstRestricted = tmp.firstRestricted;
        if (tmp.message) {
            message = tmp.message;
        }

        previousStrict = strict;
        previousYieldAllowed = state.yieldAllowed;
        state.yieldAllowed = generator;
        previousAwaitAllowed = state.awaitAllowed;
        state.awaitAllowed = isAsync;

        body = parseFunctionSourceElements();

        if (strict && firstRestricted) {
            throwError(firstRestricted, message);
        }
        if (strict && tmp.stricted) {
            throwErrorTolerant(tmp.stricted, message);
        }
        strict = previousStrict;
        state.yieldAllowed = previousYieldAllowed;
        state.awaitAllowed = previousAwaitAllowed;

        return markerApply(
            marker,
            delegate.createFunctionExpression(
                id,
                tmp.params,
                tmp.defaults,
                body,
                tmp.rest,
                generator,
                false,
                isAsync,
                tmp.returnType,
                typeParameters
            )
        );
    }

    function parseYieldExpression() {
        var delegateFlag, expr, marker = markerCreate();

        expectKeyword('yield', !strict);

        delegateFlag = false;
        if (match('*')) {
            lex();
            delegateFlag = true;
        }

        expr = parseAssignmentExpression();

        return markerApply(marker, delegate.createYieldExpression(expr, delegateFlag));
    }

    function parseAwaitExpression() {
        var expr, marker = markerCreate();
        expectContextualKeyword('await');
        expr = parseAssignmentExpression();
        return markerApply(marker, delegate.createAwaitExpression(expr));
    }

    // 14 Classes

    function parseMethodDefinition(existingPropNames, key, isStatic, generator, computed) {
        var token, param, propType, isValidDuplicateProp = false,
            isAsync, typeParameters, tokenValue, returnType,
            annotationMarker;

        propType = isStatic ? ClassPropertyType.static : ClassPropertyType.prototype;

        if (generator) {
            return delegate.createMethodDefinition(
                propType,
                '',
                key,
                parsePropertyMethodFunction({ generator: true })
            );
        }

        tokenValue = key.type === 'Identifier' && key.name;

        if (tokenValue === 'get' && !match('(')) {
            key = parseObjectPropertyKey();

            // It is a syntax error if any other properties have a name
            // duplicating this one unless they are a setter
            if (existingPropNames[propType].hasOwnProperty(key.name)) {
                isValidDuplicateProp =
                    // There isn't already a getter for this prop
                    existingPropNames[propType][key.name].get === undefined
                    // There isn't already a data prop by this name
                    && existingPropNames[propType][key.name].data === undefined
                    // The only existing prop by this name is a setter
                    && existingPropNames[propType][key.name].set !== undefined;
                if (!isValidDuplicateProp) {
                    throwError(key, Messages.IllegalDuplicateClassProperty);
                }
            } else {
                existingPropNames[propType][key.name] = {};
            }
            existingPropNames[propType][key.name].get = true;

            expect('(');
            expect(')');
            if (match(':')) {
                returnType = parseTypeAnnotation();
            }
            return delegate.createMethodDefinition(
                propType,
                'get',
                key,
                parsePropertyFunction({ generator: false, returnType: returnType })
            );
        }
        if (tokenValue === 'set' && !match('(')) {
            key = parseObjectPropertyKey();

            // It is a syntax error if any other properties have a name
            // duplicating this one unless they are a getter
            if (existingPropNames[propType].hasOwnProperty(key.name)) {
                isValidDuplicateProp =
                    // There isn't already a setter for this prop
                    existingPropNames[propType][key.name].set === undefined
                    // There isn't already a data prop by this name
                    && existingPropNames[propType][key.name].data === undefined
                    // The only existing prop by this name is a getter
                    && existingPropNames[propType][key.name].get !== undefined;
                if (!isValidDuplicateProp) {
                    throwError(key, Messages.IllegalDuplicateClassProperty);
                }
            } else {
                existingPropNames[propType][key.name] = {};
            }
            existingPropNames[propType][key.name].set = true;

            expect('(');
            token = lookahead;
            param = [ parseTypeAnnotatableIdentifier() ];
            expect(')');
            if (match(':')) {
                returnType = parseTypeAnnotation();
            }
            return delegate.createMethodDefinition(
                propType,
                'set',
                key,
                parsePropertyFunction({
                    params: param,
                    generator: false,
                    name: token,
                    returnType: returnType
                })
            );
        }

        if (match('<')) {
            typeParameters = parseTypeParameterDeclaration();
        }

        isAsync = tokenValue === 'async' && !match('(');
        if (isAsync) {
            key = parseObjectPropertyKey();
        }

        // It is a syntax error if any other properties have the same name as a
        // non-getter, non-setter method
        if (existingPropNames[propType].hasOwnProperty(key.name)) {
            throwError(key, Messages.IllegalDuplicateClassProperty);
        } else {
            existingPropNames[propType][key.name] = {};
        }
        existingPropNames[propType][key.name].data = true;

        return delegate.createMethodDefinition(
            propType,
            '',
            key,
            parsePropertyMethodFunction({
                generator: false,
                async: isAsync,
                typeParameters: typeParameters
            })
        );
    }

    function parseClassProperty(existingPropNames, key, computed, isStatic) {
        var typeAnnotation;

        typeAnnotation = parseTypeAnnotation();
        expect(';');

        return delegate.createClassProperty(
            key,
            typeAnnotation,
            computed,
            isStatic
        );
    }

    function parseClassElement(existingProps) {
        var computed, generator = false, key, marker = markerCreate(),
            isStatic = false;
        if (match(';')) {
            lex();
            return;
        }

        if (lookahead.value === 'static') {
            lex();
            isStatic = true;
        }

        if (match('*')) {
            lex();
            generator = true;
        }

        computed = (lookahead.value === '[');
        key = parseObjectPropertyKey();

        if (!generator && lookahead.value === ':') {
            return markerApply(marker, parseClassProperty(existingProps, key, computed, isStatic));
        }

        return markerApply(marker, parseMethodDefinition(
            existingProps,
            key,
            isStatic,
            generator,
            computed
        ));
    }

    function parseClassBody() {
        var classElement, classElements = [], existingProps = {}, marker = markerCreate();

        existingProps[ClassPropertyType.static] = {};
        existingProps[ClassPropertyType.prototype] = {};

        expect('{');

        while (index < length) {
            if (match('}')) {
                break;
            }
            classElement = parseClassElement(existingProps);

            if (typeof classElement !== 'undefined') {
                classElements.push(classElement);
            }
        }

        expect('}');

        return markerApply(marker, delegate.createClassBody(classElements));
    }

    function parseClassImplements() {
        var id, implemented = [], marker, typeParameters;
        expectContextualKeyword('implements');
        while (index < length) {
            marker = markerCreate();
            id = parseVariableIdentifier();
            if (match('<')) {
                typeParameters = parseTypeParameterInstantiation();
            } else {
                typeParameters = null;
            }
            implemented.push(markerApply(marker, delegate.createClassImplements(
                id,
                typeParameters
            )));
            if (!match(',')) {
                break;
            }
            expect(',');
        }
        return implemented;
    }

    function parseClassExpression() {
        var id, implemented, previousYieldAllowed, superClass = null,
            superTypeParameters, marker = markerCreate(), typeParameters;

        expectKeyword('class');

        if (!matchKeyword('extends') && !matchContextualKeyword('implements') && !match('{')) {
            id = parseVariableIdentifier();
        }

        if (match('<')) {
            typeParameters = parseTypeParameterDeclaration();
        }

        if (matchKeyword('extends')) {
            expectKeyword('extends');
            previousYieldAllowed = state.yieldAllowed;
            state.yieldAllowed = false;
            superClass = parseLeftHandSideExpressionAllowCall();
            if (match('<')) {
                superTypeParameters = parseTypeParameterInstantiation();
            }
            state.yieldAllowed = previousYieldAllowed;
        }

        if (matchContextualKeyword('implements')) {
            implemented = parseClassImplements();
        }

        return markerApply(marker, delegate.createClassExpression(
            id,
            superClass,
            parseClassBody(),
            typeParameters,
            superTypeParameters,
            implemented
        ));
    }

    function parseClassDeclaration() {
        var id, implemented, previousYieldAllowed, superClass = null,
            superTypeParameters, marker = markerCreate(), typeParameters;

        expectKeyword('class');

        id = parseVariableIdentifier();

        if (match('<')) {
            typeParameters = parseTypeParameterDeclaration();
        }

        if (matchKeyword('extends')) {
            expectKeyword('extends');
            previousYieldAllowed = state.yieldAllowed;
            state.yieldAllowed = false;
            superClass = parseLeftHandSideExpressionAllowCall();
            if (match('<')) {
                superTypeParameters = parseTypeParameterInstantiation();
            }
            state.yieldAllowed = previousYieldAllowed;
        }

        if (matchContextualKeyword('implements')) {
            implemented = parseClassImplements();
        }

        return markerApply(marker, delegate.createClassDeclaration(
            id,
            superClass,
            parseClassBody(),
            typeParameters,
            superTypeParameters,
            implemented
        ));
    }

    // 15 Program

    function parseSourceElement() {
        var token;
        if (lookahead.type === Token.Keyword) {
            switch (lookahead.value) {
            case 'const':
            case 'let':
                return parseConstLetDeclaration(lookahead.value);
            case 'function':
                return parseFunctionDeclaration();
            default:
                return parseStatement();
            }
        }

        if (matchContextualKeyword('type')
                && lookahead2().type === Token.Identifier) {
            return parseTypeAlias();
        }

        if (matchContextualKeyword('interface')
                && lookahead2().type === Token.Identifier) {
            return parseInterface();
        }

        if (matchContextualKeyword('declare')) {
            token = lookahead2();
            if (token.type === Token.Keyword) {
                switch (token.value) {
                case 'class':
                    return parseDeclareClass();
                case 'function':
                    return parseDeclareFunction();
                case 'var':
                    return parseDeclareVariable();
                }
            } else if (token.type === Token.Identifier
                    && token.value === 'module') {
                return parseDeclareModule();
            }
        }

        if (lookahead.type !== Token.EOF) {
            return parseStatement();
        }
    }

    function parseProgramElement() {
        if (lookahead.type === Token.Keyword) {
            switch (lookahead.value) {
            case 'export':
                return parseExportDeclaration();
            case 'import':
                return parseImportDeclaration();
            }
        }

        return parseSourceElement();
    }

    function parseProgramElements() {
        var sourceElement, sourceElements = [], token, directive, firstRestricted;

        while (index < length) {
            token = lookahead;
            if (token.type !== Token.StringLiteral) {
                break;
            }

            sourceElement = parseProgramElement();
            sourceElements.push(sourceElement);
            if (sourceElement.expression.type !== Syntax.Literal) {
                // this is not directive
                break;
            }
            directive = source.slice(token.range[0] + 1, token.range[1] - 1);
            if (directive === 'use strict') {
                strict = true;
                if (firstRestricted) {
                    throwErrorTolerant(firstRestricted, Messages.StrictOctalLiteral);
                }
            } else {
                if (!firstRestricted && token.octal) {
                    firstRestricted = token;
                }
            }
        }

        while (index < length) {
            sourceElement = parseProgramElement();
            if (typeof sourceElement === 'undefined') {
                break;
            }
            sourceElements.push(sourceElement);
        }
        return sourceElements;
    }

    function parseProgram() {
        var body, marker = markerCreate();
        strict = false;
        peek();
        body = parseProgramElements();
        return markerApply(marker, delegate.createProgram(body));
    }

    // The following functions are needed only when the option to preserve
    // the comments is active.

    function addComment(type, value, start, end, loc) {
        var comment;

        assert(typeof start === 'number', 'Comment must have valid position');

        // Because the way the actual token is scanned, often the comments
        // (if any) are skipped twice during the lexical analysis.
        // Thus, we need to skip adding a comment if the comment array already
        // handled it.
        if (state.lastCommentStart >= start) {
            return;
        }
        state.lastCommentStart = start;

        comment = {
            type: type,
            value: value
        };
        if (extra.range) {
            comment.range = [start, end];
        }
        if (extra.loc) {
            comment.loc = loc;
        }
        extra.comments.push(comment);
        if (extra.attachComment) {
            extra.leadingComments.push(comment);
            extra.trailingComments.push(comment);
        }
    }

    function scanComment() {
        var comment, ch, loc, start, blockComment, lineComment;

        comment = '';
        blockComment = false;
        lineComment = false;

        while (index < length) {
            ch = source[index];

            if (lineComment) {
                ch = source[index++];
                if (isLineTerminator(ch.charCodeAt(0))) {
                    loc.end = {
                        line: lineNumber,
                        column: index - lineStart - 1
                    };
                    lineComment = false;
                    addComment('Line', comment, start, index - 1, loc);
                    if (ch === '\r' && source[index] === '\n') {
                        ++index;
                    }
                    ++lineNumber;
                    lineStart = index;
                    comment = '';
                } else if (index >= length) {
                    lineComment = false;
                    comment += ch;
                    loc.end = {
                        line: lineNumber,
                        column: length - lineStart
                    };
                    addComment('Line', comment, start, length, loc);
                } else {
                    comment += ch;
                }
            } else if (blockComment) {
                if (isLineTerminator(ch.charCodeAt(0))) {
                    if (ch === '\r') {
                        ++index;
                        comment += '\r';
                    }
                    if (ch !== '\r' || source[index] === '\n') {
                        comment += source[index];
                        ++lineNumber;
                        ++index;
                        lineStart = index;
                        if (index >= length) {
                            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
                        }
                    }
                } else {
                    ch = source[index++];
                    if (index >= length) {
                        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
                    }
                    comment += ch;
                    if (ch === '*') {
                        ch = source[index];
                        if (ch === '/') {
                            comment = comment.substr(0, comment.length - 1);
                            blockComment = false;
                            ++index;
                            loc.end = {
                                line: lineNumber,
                                column: index - lineStart
                            };
                            addComment('Block', comment, start, index, loc);
                            comment = '';
                        }
                    }
                }
            } else if (ch === '/') {
                ch = source[index + 1];
                if (ch === '/') {
                    loc = {
                        start: {
                            line: lineNumber,
                            column: index - lineStart
                        }
                    };
                    start = index;
                    index += 2;
                    lineComment = true;
                    if (index >= length) {
                        loc.end = {
                            line: lineNumber,
                            column: index - lineStart
                        };
                        lineComment = false;
                        addComment('Line', comment, start, index, loc);
                    }
                } else if (ch === '*') {
                    start = index;
                    index += 2;
                    blockComment = true;
                    loc = {
                        start: {
                            line: lineNumber,
                            column: index - lineStart - 2
                        }
                    };
                    if (index >= length) {
                        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
                    }
                } else {
                    break;
                }
            } else if (isWhiteSpace(ch.charCodeAt(0))) {
                ++index;
            } else if (isLineTerminator(ch.charCodeAt(0))) {
                ++index;
                if (ch ===  '\r' && source[index] === '\n') {
                    ++index;
                }
                ++lineNumber;
                lineStart = index;
            } else {
                break;
            }
        }
    }

    // 16 XJS

    XHTMLEntities = {
        quot: '\u0022',
        amp: '&',
        apos: '\u0027',
        lt: '<',
        gt: '>',
        nbsp: '\u00A0',
        iexcl: '\u00A1',
        cent: '\u00A2',
        pound: '\u00A3',
        curren: '\u00A4',
        yen: '\u00A5',
        brvbar: '\u00A6',
        sect: '\u00A7',
        uml: '\u00A8',
        copy: '\u00A9',
        ordf: '\u00AA',
        laquo: '\u00AB',
        not: '\u00AC',
        shy: '\u00AD',
        reg: '\u00AE',
        macr: '\u00AF',
        deg: '\u00B0',
        plusmn: '\u00B1',
        sup2: '\u00B2',
        sup3: '\u00B3',
        acute: '\u00B4',
        micro: '\u00B5',
        para: '\u00B6',
        middot: '\u00B7',
        cedil: '\u00B8',
        sup1: '\u00B9',
        ordm: '\u00BA',
        raquo: '\u00BB',
        frac14: '\u00BC',
        frac12: '\u00BD',
        frac34: '\u00BE',
        iquest: '\u00BF',
        Agrave: '\u00C0',
        Aacute: '\u00C1',
        Acirc: '\u00C2',
        Atilde: '\u00C3',
        Auml: '\u00C4',
        Aring: '\u00C5',
        AElig: '\u00C6',
        Ccedil: '\u00C7',
        Egrave: '\u00C8',
        Eacute: '\u00C9',
        Ecirc: '\u00CA',
        Euml: '\u00CB',
        Igrave: '\u00CC',
        Iacute: '\u00CD',
        Icirc: '\u00CE',
        Iuml: '\u00CF',
        ETH: '\u00D0',
        Ntilde: '\u00D1',
        Ograve: '\u00D2',
        Oacute: '\u00D3',
        Ocirc: '\u00D4',
        Otilde: '\u00D5',
        Ouml: '\u00D6',
        times: '\u00D7',
        Oslash: '\u00D8',
        Ugrave: '\u00D9',
        Uacute: '\u00DA',
        Ucirc: '\u00DB',
        Uuml: '\u00DC',
        Yacute: '\u00DD',
        THORN: '\u00DE',
        szlig: '\u00DF',
        agrave: '\u00E0',
        aacute: '\u00E1',
        acirc: '\u00E2',
        atilde: '\u00E3',
        auml: '\u00E4',
        aring: '\u00E5',
        aelig: '\u00E6',
        ccedil: '\u00E7',
        egrave: '\u00E8',
        eacute: '\u00E9',
        ecirc: '\u00EA',
        euml: '\u00EB',
        igrave: '\u00EC',
        iacute: '\u00ED',
        icirc: '\u00EE',
        iuml: '\u00EF',
        eth: '\u00F0',
        ntilde: '\u00F1',
        ograve: '\u00F2',
        oacute: '\u00F3',
        ocirc: '\u00F4',
        otilde: '\u00F5',
        ouml: '\u00F6',
        divide: '\u00F7',
        oslash: '\u00F8',
        ugrave: '\u00F9',
        uacute: '\u00FA',
        ucirc: '\u00FB',
        uuml: '\u00FC',
        yacute: '\u00FD',
        thorn: '\u00FE',
        yuml: '\u00FF',
        OElig: '\u0152',
        oelig: '\u0153',
        Scaron: '\u0160',
        scaron: '\u0161',
        Yuml: '\u0178',
        fnof: '\u0192',
        circ: '\u02C6',
        tilde: '\u02DC',
        Alpha: '\u0391',
        Beta: '\u0392',
        Gamma: '\u0393',
        Delta: '\u0394',
        Epsilon: '\u0395',
        Zeta: '\u0396',
        Eta: '\u0397',
        Theta: '\u0398',
        Iota: '\u0399',
        Kappa: '\u039A',
        Lambda: '\u039B',
        Mu: '\u039C',
        Nu: '\u039D',
        Xi: '\u039E',
        Omicron: '\u039F',
        Pi: '\u03A0',
        Rho: '\u03A1',
        Sigma: '\u03A3',
        Tau: '\u03A4',
        Upsilon: '\u03A5',
        Phi: '\u03A6',
        Chi: '\u03A7',
        Psi: '\u03A8',
        Omega: '\u03A9',
        alpha: '\u03B1',
        beta: '\u03B2',
        gamma: '\u03B3',
        delta: '\u03B4',
        epsilon: '\u03B5',
        zeta: '\u03B6',
        eta: '\u03B7',
        theta: '\u03B8',
        iota: '\u03B9',
        kappa: '\u03BA',
        lambda: '\u03BB',
        mu: '\u03BC',
        nu: '\u03BD',
        xi: '\u03BE',
        omicron: '\u03BF',
        pi: '\u03C0',
        rho: '\u03C1',
        sigmaf: '\u03C2',
        sigma: '\u03C3',
        tau: '\u03C4',
        upsilon: '\u03C5',
        phi: '\u03C6',
        chi: '\u03C7',
        psi: '\u03C8',
        omega: '\u03C9',
        thetasym: '\u03D1',
        upsih: '\u03D2',
        piv: '\u03D6',
        ensp: '\u2002',
        emsp: '\u2003',
        thinsp: '\u2009',
        zwnj: '\u200C',
        zwj: '\u200D',
        lrm: '\u200E',
        rlm: '\u200F',
        ndash: '\u2013',
        mdash: '\u2014',
        lsquo: '\u2018',
        rsquo: '\u2019',
        sbquo: '\u201A',
        ldquo: '\u201C',
        rdquo: '\u201D',
        bdquo: '\u201E',
        dagger: '\u2020',
        Dagger: '\u2021',
        bull: '\u2022',
        hellip: '\u2026',
        permil: '\u2030',
        prime: '\u2032',
        Prime: '\u2033',
        lsaquo: '\u2039',
        rsaquo: '\u203A',
        oline: '\u203E',
        frasl: '\u2044',
        euro: '\u20AC',
        image: '\u2111',
        weierp: '\u2118',
        real: '\u211C',
        trade: '\u2122',
        alefsym: '\u2135',
        larr: '\u2190',
        uarr: '\u2191',
        rarr: '\u2192',
        darr: '\u2193',
        harr: '\u2194',
        crarr: '\u21B5',
        lArr: '\u21D0',
        uArr: '\u21D1',
        rArr: '\u21D2',
        dArr: '\u21D3',
        hArr: '\u21D4',
        forall: '\u2200',
        part: '\u2202',
        exist: '\u2203',
        empty: '\u2205',
        nabla: '\u2207',
        isin: '\u2208',
        notin: '\u2209',
        ni: '\u220B',
        prod: '\u220F',
        sum: '\u2211',
        minus: '\u2212',
        lowast: '\u2217',
        radic: '\u221A',
        prop: '\u221D',
        infin: '\u221E',
        ang: '\u2220',
        and: '\u2227',
        or: '\u2228',
        cap: '\u2229',
        cup: '\u222A',
        'int': '\u222B',
        there4: '\u2234',
        sim: '\u223C',
        cong: '\u2245',
        asymp: '\u2248',
        ne: '\u2260',
        equiv: '\u2261',
        le: '\u2264',
        ge: '\u2265',
        sub: '\u2282',
        sup: '\u2283',
        nsub: '\u2284',
        sube: '\u2286',
        supe: '\u2287',
        oplus: '\u2295',
        otimes: '\u2297',
        perp: '\u22A5',
        sdot: '\u22C5',
        lceil: '\u2308',
        rceil: '\u2309',
        lfloor: '\u230A',
        rfloor: '\u230B',
        lang: '\u2329',
        rang: '\u232A',
        loz: '\u25CA',
        spades: '\u2660',
        clubs: '\u2663',
        hearts: '\u2665',
        diams: '\u2666'
    };

    function getQualifiedXJSName(object) {
        if (object.type === Syntax.XJSIdentifier) {
            return object.name;
        }
        if (object.type === Syntax.XJSNamespacedName) {
            return object.namespace.name + ':' + object.name.name;
        }
        if (object.type === Syntax.XJSMemberExpression) {
            return (
                getQualifiedXJSName(object.object) + '.' +
                getQualifiedXJSName(object.property)
            );
        }
    }

    function isXJSIdentifierStart(ch) {
        // exclude backslash (\)
        return (ch !== 92) && isIdentifierStart(ch);
    }

    function isXJSIdentifierPart(ch) {
        // exclude backslash (\) and add hyphen (-)
        return (ch !== 92) && (ch === 45 || isIdentifierPart(ch));
    }

    function scanXJSIdentifier() {
        var ch, start, value = '';

        start = index;
        while (index < length) {
            ch = source.charCodeAt(index);
            if (!isXJSIdentifierPart(ch)) {
                break;
            }
            value += source[index++];
        }

        return {
            type: Token.XJSIdentifier,
            value: value,
            lineNumber: lineNumber,
            lineStart: lineStart,
            range: [start, index]
        };
    }

    function scanXJSEntity() {
        var ch, str = '', start = index, count = 0, code;
        ch = source[index];
        assert(ch === '&', 'Entity must start with an ampersand');
        index++;
        while (index < length && count++ < 10) {
            ch = source[index++];
            if (ch === ';') {
                break;
            }
            str += ch;
        }

        // Well-formed entity (ending was found).
        if (ch === ';') {
            // Numeric entity.
            if (str[0] === '#') {
                if (str[1] === 'x') {
                    code = +('0' + str.substr(1));
                } else {
                    // Removing leading zeros in order to avoid treating as octal in old browsers.
                    code = +str.substr(1).replace(Regex.LeadingZeros, '');
                }

                if (!isNaN(code)) {
                    return String.fromCharCode(code);
                }
            } else if (XHTMLEntities[str]) {
                return XHTMLEntities[str];
            }
        }

        // Treat non-entity sequences as regular text.
        index = start + 1;
        return '&';
    }

    function scanXJSText(stopChars) {
        var ch, str = '', start;
        start = index;
        while (index < length) {
            ch = source[index];
            if (stopChars.indexOf(ch) !== -1) {
                break;
            }
            if (ch === '&') {
                str += scanXJSEntity();
            } else {
                index++;
                if (ch === '\r' && source[index] === '\n') {
                    str += ch;
                    ch = source[index];
                    index++;
                }
                if (isLineTerminator(ch.charCodeAt(0))) {
                    ++lineNumber;
                    lineStart = index;
                }
                str += ch;
            }
        }
        return {
            type: Token.XJSText,
            value: str,
            lineNumber: lineNumber,
            lineStart: lineStart,
            range: [start, index]
        };
    }

    function scanXJSStringLiteral() {
        var innerToken, quote, start;

        quote = source[index];
        assert((quote === '\'' || quote === '"'),
            'String literal must starts with a quote');

        start = index;
        ++index;

        innerToken = scanXJSText([quote]);

        if (quote !== source[index]) {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        ++index;

        innerToken.range = [start, index];

        return innerToken;
    }

    /**
     * Between XJS opening and closing tags (e.g. <foo>HERE</foo>), anything that
     * is not another XJS tag and is not an expression wrapped by {} is text.
     */
    function advanceXJSChild() {
        var ch = source.charCodeAt(index);

        // { (123) and < (60)
        if (ch !== 123 && ch !== 60) {
            return scanXJSText(['<', '{']);
        }

        return scanPunctuator();
    }

    function parseXJSIdentifier() {
        var token, marker = markerCreate();

        if (lookahead.type !== Token.XJSIdentifier) {
            throwUnexpected(lookahead);
        }

        token = lex();
        return markerApply(marker, delegate.createXJSIdentifier(token.value));
    }

    function parseXJSNamespacedName() {
        var namespace, name, marker = markerCreate();

        namespace = parseXJSIdentifier();
        expect(':');
        name = parseXJSIdentifier();

        return markerApply(marker, delegate.createXJSNamespacedName(namespace, name));
    }

    function parseXJSMemberExpression() {
        var marker = markerCreate(),
            expr = parseXJSIdentifier();

        while (match('.')) {
            lex();
            expr = markerApply(marker, delegate.createXJSMemberExpression(expr, parseXJSIdentifier()));
        }

        return expr;
    }

    function parseXJSElementName() {
        if (lookahead2().value === ':') {
            return parseXJSNamespacedName();
        }
        if (lookahead2().value === '.') {
            return parseXJSMemberExpression();
        }

        return parseXJSIdentifier();
    }

    function parseXJSAttributeName() {
        if (lookahead2().value === ':') {
            return parseXJSNamespacedName();
        }

        return parseXJSIdentifier();
    }

    function parseXJSAttributeValue() {
        var value, marker;
        if (match('{')) {
            value = parseXJSExpressionContainer();
            if (value.expression.type === Syntax.XJSEmptyExpression) {
                throwError(
                    value,
                    'XJS attributes must only be assigned a non-empty ' +
                        'expression'
                );
            }
        } else if (match('<')) {
            value = parseXJSElement();
        } else if (lookahead.type === Token.XJSText) {
            marker = markerCreate();
            value = markerApply(marker, delegate.createLiteral(lex()));
        } else {
            throwError({}, Messages.InvalidXJSAttributeValue);
        }
        return value;
    }

    function parseXJSEmptyExpression() {
        var marker = markerCreatePreserveWhitespace();
        while (source.charAt(index) !== '}') {
            index++;
        }
        return markerApply(marker, delegate.createXJSEmptyExpression());
    }

    function parseXJSExpressionContainer() {
        var expression, origInXJSChild, origInXJSTag, marker = markerCreate();

        origInXJSChild = state.inXJSChild;
        origInXJSTag = state.inXJSTag;
        state.inXJSChild = false;
        state.inXJSTag = false;

        expect('{');

        if (match('}')) {
            expression = parseXJSEmptyExpression();
        } else {
            expression = parseExpression();
        }

        state.inXJSChild = origInXJSChild;
        state.inXJSTag = origInXJSTag;

        expect('}');

        return markerApply(marker, delegate.createXJSExpressionContainer(expression));
    }

    function parseXJSSpreadAttribute() {
        var expression, origInXJSChild, origInXJSTag, marker = markerCreate();

        origInXJSChild = state.inXJSChild;
        origInXJSTag = state.inXJSTag;
        state.inXJSChild = false;
        state.inXJSTag = false;

        expect('{');
        expect('...');

        expression = parseAssignmentExpression();

        state.inXJSChild = origInXJSChild;
        state.inXJSTag = origInXJSTag;

        expect('}');

        return markerApply(marker, delegate.createXJSSpreadAttribute(expression));
    }

    function parseXJSAttribute() {
        var name, marker;

        if (match('{')) {
            return parseXJSSpreadAttribute();
        }

        marker = markerCreate();

        name = parseXJSAttributeName();

        // HTML empty attribute
        if (match('=')) {
            lex();
            return markerApply(marker, delegate.createXJSAttribute(name, parseXJSAttributeValue()));
        }

        return markerApply(marker, delegate.createXJSAttribute(name));
    }

    function parseXJSChild() {
        var token, marker;
        if (match('{')) {
            token = parseXJSExpressionContainer();
        } else if (lookahead.type === Token.XJSText) {
            marker = markerCreatePreserveWhitespace();
            token = markerApply(marker, delegate.createLiteral(lex()));
        } else {
            token = parseXJSElement();
        }
        return token;
    }

    function parseXJSClosingElement() {
        var name, origInXJSChild, origInXJSTag, marker = markerCreate();
        origInXJSChild = state.inXJSChild;
        origInXJSTag = state.inXJSTag;
        state.inXJSChild = false;
        state.inXJSTag = true;
        expect('<');
        expect('/');
        name = parseXJSElementName();
        // Because advance() (called by lex() called by expect()) expects there
        // to be a valid token after >, it needs to know whether to look for a
        // standard JS token or an XJS text node
        state.inXJSChild = origInXJSChild;
        state.inXJSTag = origInXJSTag;
        expect('>');
        return markerApply(marker, delegate.createXJSClosingElement(name));
    }

    function parseXJSOpeningElement() {
        var name, attribute, attributes = [], selfClosing = false, origInXJSChild, origInXJSTag, marker = markerCreate();

        origInXJSChild = state.inXJSChild;
        origInXJSTag = state.inXJSTag;
        state.inXJSChild = false;
        state.inXJSTag = true;

        expect('<');

        name = parseXJSElementName();

        while (index < length &&
                lookahead.value !== '/' &&
                lookahead.value !== '>') {
            attributes.push(parseXJSAttribute());
        }

        state.inXJSTag = origInXJSTag;

        if (lookahead.value === '/') {
            expect('/');
            // Because advance() (called by lex() called by expect()) expects
            // there to be a valid token after >, it needs to know whether to
            // look for a standard JS token or an XJS text node
            state.inXJSChild = origInXJSChild;
            expect('>');
            selfClosing = true;
        } else {
            state.inXJSChild = true;
            expect('>');
        }
        return markerApply(marker, delegate.createXJSOpeningElement(name, attributes, selfClosing));
    }

    function parseXJSElement() {
        var openingElement, closingElement = null, children = [], origInXJSChild, origInXJSTag, marker = markerCreate();

        origInXJSChild = state.inXJSChild;
        origInXJSTag = state.inXJSTag;
        openingElement = parseXJSOpeningElement();

        if (!openingElement.selfClosing) {
            while (index < length) {
                state.inXJSChild = false; // Call lookahead2() with inXJSChild = false because </ should not be considered in the child
                if (lookahead.value === '<' && lookahead2().value === '/') {
                    break;
                }
                state.inXJSChild = true;
                children.push(parseXJSChild());
            }
            state.inXJSChild = origInXJSChild;
            state.inXJSTag = origInXJSTag;
            closingElement = parseXJSClosingElement();
            if (getQualifiedXJSName(closingElement.name) !== getQualifiedXJSName(openingElement.name)) {
                throwError({}, Messages.ExpectedXJSClosingTag, getQualifiedXJSName(openingElement.name));
            }
        }

        // When (erroneously) writing two adjacent tags like
        //
        //     var x = <div>one</div><div>two</div>;
        //
        // the default error message is a bit incomprehensible. Since it's
        // rarely (never?) useful to write a less-than sign after an XJS
        // element, we disallow it here in the parser in order to provide a
        // better error message. (In the rare case that the less-than operator
        // was intended, the left tag can be wrapped in parentheses.)
        if (!origInXJSChild && match('<')) {
            throwError(lookahead, Messages.AdjacentXJSElements);
        }

        return markerApply(marker, delegate.createXJSElement(openingElement, closingElement, children));
    }

    function parseTypeAlias() {
        var id, marker = markerCreate(), typeParameters = null, right;
        expectContextualKeyword('type');
        id = parseVariableIdentifier();
        if (match('<')) {
            typeParameters = parseTypeParameterDeclaration();
        }
        expect('=');
        right = parseType();
        consumeSemicolon();
        return markerApply(marker, delegate.createTypeAlias(id, typeParameters, right));
    }

    function parseInterfaceExtends() {
        var marker = markerCreate(), id, typeParameters = null;

        id = parseVariableIdentifier();
        if (match('<')) {
            typeParameters = parseTypeParameterInstantiation();
        }

        return markerApply(marker, delegate.createInterfaceExtends(
            id,
            typeParameters
        ));
    }

    function parseInterfaceish(marker, allowStatic) {
        var body, bodyMarker, extended = [], id,
            typeParameters = null;

        id = parseVariableIdentifier();
        if (match('<')) {
            typeParameters = parseTypeParameterDeclaration();
        }

        if (matchKeyword('extends')) {
            expectKeyword('extends');

            while (index < length) {
                extended.push(parseInterfaceExtends());
                if (!match(',')) {
                    break;
                }
                expect(',');
            }
        }

        bodyMarker = markerCreate();
        body = markerApply(bodyMarker, parseObjectType(allowStatic));

        return markerApply(marker, delegate.createInterface(
            id,
            typeParameters,
            body,
            extended
        ));
    }

    function parseInterface() {
        var body, bodyMarker, extended = [], id, marker = markerCreate(),
            typeParameters = null;

        expectContextualKeyword('interface');
        return parseInterfaceish(marker, /* allowStatic */false);
    }

    function parseDeclareClass() {
        var marker = markerCreate(), ret;
        expectContextualKeyword('declare');
        expectKeyword('class');

        ret = parseInterfaceish(marker, /* allowStatic */true);
        ret.type = Syntax.DeclareClass;
        return ret;
    }

    function parseDeclareFunction() {
        var id, idMarker,
            marker = markerCreate(), params, returnType, rest, tmp,
            typeParameters = null, value, valueMarker;

        expectContextualKeyword('declare');
        expectKeyword('function');
        idMarker = markerCreate();
        id = parseVariableIdentifier();

        valueMarker = markerCreate();
        if (match('<')) {
            typeParameters = parseTypeParameterDeclaration();
        }
        expect('(');
        tmp = parseFunctionTypeParams();
        params = tmp.params;
        rest = tmp.rest;
        expect(')');

        expect(':');
        returnType = parseType();

        value = markerApply(valueMarker, delegate.createFunctionTypeAnnotation(
            params,
            returnType,
            rest,
            typeParameters
        ));

        id.typeAnnotation = markerApply(valueMarker, delegate.createTypeAnnotation(
            value
        ));
        markerApply(idMarker, id);

        consumeSemicolon();

        return markerApply(marker, delegate.createDeclareFunction(
            id
        ));
    }

    function parseDeclareVariable() {
        var id, marker = markerCreate();
        expectContextualKeyword('declare');
        expectKeyword('var');
        id = parseTypeAnnotatableIdentifier();

        consumeSemicolon();

        return markerApply(marker, delegate.createDeclareVariable(
            id
        ));
    }

    function parseDeclareModule() {
        var body = [], bodyMarker, id, idMarker, marker = markerCreate(), token;
        expectContextualKeyword('declare');
        expectContextualKeyword('module');

        if (lookahead.type === Token.StringLiteral) {
            if (strict && lookahead.octal) {
                throwErrorTolerant(lookahead, Messages.StrictOctalLiteral);
            }
            idMarker = markerCreate();
            id = markerApply(idMarker, delegate.createLiteral(lex()));
        } else {
            id = parseVariableIdentifier();
        }

        bodyMarker = markerCreate();
        expect('{');
        while (index < length && !match('}')) {
            token = lookahead2();
            switch (token.value) {
            case 'class':
                body.push(parseDeclareClass());
                break;
            case 'function':
                body.push(parseDeclareFunction());
                break;
            case 'var':
                body.push(parseDeclareVariable());
                break;
            default:
                throwUnexpected(lookahead);
            }
        }
        expect('}');

        return markerApply(marker, delegate.createDeclareModule(
            id,
            markerApply(bodyMarker, delegate.createBlockStatement(body))
        ));
    }

    function collectToken() {
        var start, loc, token, range, value, entry;

        if (!state.inXJSChild) {
            skipComment();
        }

        start = index;
        loc = {
            start: {
                line: lineNumber,
                column: index - lineStart
            }
        };

        token = extra.advance();
        loc.end = {
            line: lineNumber,
            column: index - lineStart
        };

        if (token.type !== Token.EOF) {
            range = [token.range[0], token.range[1]];
            value = source.slice(token.range[0], token.range[1]);
            entry = {
                type: TokenName[token.type],
                value: value,
                range: range,
                loc: loc
            };
            if (token.regex) {
                entry.regex = {
                    pattern: token.regex.pattern,
                    flags: token.regex.flags
                };
            }
            extra.tokens.push(entry);
        }

        return token;
    }

    function collectRegex() {
        var pos, loc, regex, token;

        skipComment();

        pos = index;
        loc = {
            start: {
                line: lineNumber,
                column: index - lineStart
            }
        };

        regex = extra.scanRegExp();
        loc.end = {
            line: lineNumber,
            column: index - lineStart
        };

        if (!extra.tokenize) {
            // Pop the previous token, which is likely '/' or '/='
            if (extra.tokens.length > 0) {
                token = extra.tokens[extra.tokens.length - 1];
                if (token.range[0] === pos && token.type === 'Punctuator') {
                    if (token.value === '/' || token.value === '/=') {
                        extra.tokens.pop();
                    }
                }
            }

            extra.tokens.push({
                type: 'RegularExpression',
                value: regex.literal,
                regex: regex.regex,
                range: [pos, index],
                loc: loc
            });
        }

        return regex;
    }

    function filterTokenLocation() {
        var i, entry, token, tokens = [];

        for (i = 0; i < extra.tokens.length; ++i) {
            entry = extra.tokens[i];
            token = {
                type: entry.type,
                value: entry.value
            };
            if (entry.regex) {
                token.regex = {
                    pattern: entry.regex.pattern,
                    flags: entry.regex.flags
                };
            }
            if (extra.range) {
                token.range = entry.range;
            }
            if (extra.loc) {
                token.loc = entry.loc;
            }
            tokens.push(token);
        }

        extra.tokens = tokens;
    }

    function patch() {
        if (extra.comments) {
            extra.skipComment = skipComment;
            skipComment = scanComment;
        }

        if (typeof extra.tokens !== 'undefined') {
            extra.advance = advance;
            extra.scanRegExp = scanRegExp;

            advance = collectToken;
            scanRegExp = collectRegex;
        }
    }

    function unpatch() {
        if (typeof extra.skipComment === 'function') {
            skipComment = extra.skipComment;
        }

        if (typeof extra.scanRegExp === 'function') {
            advance = extra.advance;
            scanRegExp = extra.scanRegExp;
        }
    }

    // This is used to modify the delegate.

    function extend(object, properties) {
        var entry, result = {};

        for (entry in object) {
            if (object.hasOwnProperty(entry)) {
                result[entry] = object[entry];
            }
        }

        for (entry in properties) {
            if (properties.hasOwnProperty(entry)) {
                result[entry] = properties[entry];
            }
        }

        return result;
    }

    function tokenize(code, options) {
        var toString,
            token,
            tokens;

        toString = String;
        if (typeof code !== 'string' && !(code instanceof String)) {
            code = toString(code);
        }

        delegate = SyntaxTreeDelegate;
        source = code;
        index = 0;
        lineNumber = (source.length > 0) ? 1 : 0;
        lineStart = 0;
        length = source.length;
        lookahead = null;
        state = {
            allowKeyword: true,
            allowIn: true,
            labelSet: {},
            inFunctionBody: false,
            inIteration: false,
            inSwitch: false,
            lastCommentStart: -1
        };

        extra = {};

        // Options matching.
        options = options || {};

        // Of course we collect tokens here.
        options.tokens = true;
        extra.tokens = [];
        extra.tokenize = true;
        // The following two fields are necessary to compute the Regex tokens.
        extra.openParenToken = -1;
        extra.openCurlyToken = -1;

        extra.range = (typeof options.range === 'boolean') && options.range;
        extra.loc = (typeof options.loc === 'boolean') && options.loc;

        if (typeof options.comment === 'boolean' && options.comment) {
            extra.comments = [];
        }
        if (typeof options.tolerant === 'boolean' && options.tolerant) {
            extra.errors = [];
        }

        if (length > 0) {
            if (typeof source[0] === 'undefined') {
                // Try first to convert to a string. This is good as fast path
                // for old IE which understands string indexing for string
                // literals only and not for string object.
                if (code instanceof String) {
                    source = code.valueOf();
                }
            }
        }

        patch();

        try {
            peek();
            if (lookahead.type === Token.EOF) {
                return extra.tokens;
            }

            token = lex();
            while (lookahead.type !== Token.EOF) {
                try {
                    token = lex();
                } catch (lexError) {
                    token = lookahead;
                    if (extra.errors) {
                        extra.errors.push(lexError);
                        // We have to break on the first error
                        // to avoid infinite loops.
                        break;
                    } else {
                        throw lexError;
                    }
                }
            }

            filterTokenLocation();
            tokens = extra.tokens;
            if (typeof extra.comments !== 'undefined') {
                tokens.comments = extra.comments;
            }
            if (typeof extra.errors !== 'undefined') {
                tokens.errors = extra.errors;
            }
        } catch (e) {
            throw e;
        } finally {
            unpatch();
            extra = {};
        }
        return tokens;
    }

    function parse(code, options) {
        var program, toString;

        toString = String;
        if (typeof code !== 'string' && !(code instanceof String)) {
            code = toString(code);
        }

        delegate = SyntaxTreeDelegate;
        source = code;
        index = 0;
        lineNumber = (source.length > 0) ? 1 : 0;
        lineStart = 0;
        length = source.length;
        lookahead = null;
        state = {
            allowKeyword: false,
            allowIn: true,
            labelSet: {},
            parenthesizedCount: 0,
            inFunctionBody: false,
            inIteration: false,
            inSwitch: false,
            inXJSChild: false,
            inXJSTag: false,
            inType: false,
            lastCommentStart: -1,
            yieldAllowed: false,
            awaitAllowed: false
        };

        extra = {};
        if (typeof options !== 'undefined') {
            extra.range = (typeof options.range === 'boolean') && options.range;
            extra.loc = (typeof options.loc === 'boolean') && options.loc;
            extra.attachComment = (typeof options.attachComment === 'boolean') && options.attachComment;

            if (extra.loc && options.source !== null && options.source !== undefined) {
                delegate = extend(delegate, {
                    'postProcess': function (node) {
                        node.loc.source = toString(options.source);
                        return node;
                    }
                });
            }

            if (typeof options.tokens === 'boolean' && options.tokens) {
                extra.tokens = [];
            }
            if (typeof options.comment === 'boolean' && options.comment) {
                extra.comments = [];
            }
            if (typeof options.tolerant === 'boolean' && options.tolerant) {
                extra.errors = [];
            }
            if (extra.attachComment) {
                extra.range = true;
                extra.comments = [];
                extra.bottomRightStack = [];
                extra.trailingComments = [];
                extra.leadingComments = [];
            }
        }

        if (length > 0) {
            if (typeof source[0] === 'undefined') {
                // Try first to convert to a string. This is good as fast path
                // for old IE which understands string indexing for string
                // literals only and not for string object.
                if (code instanceof String) {
                    source = code.valueOf();
                }
            }
        }

        patch();
        try {
            program = parseProgram();
            if (typeof extra.comments !== 'undefined') {
                program.comments = extra.comments;
            }
            if (typeof extra.tokens !== 'undefined') {
                filterTokenLocation();
                program.tokens = extra.tokens;
            }
            if (typeof extra.errors !== 'undefined') {
                program.errors = extra.errors;
            }
        } catch (e) {
            throw e;
        } finally {
            unpatch();
            extra = {};
        }

        return program;
    }

    // Sync with *.json manifests.
    exports.version = '8001.1001.0-dev-harmony-fb';

    exports.tokenize = tokenize;

    exports.parse = parse;

    // Deep copy.
    exports.Syntax = (function () {
        var name, types = {};

        if (typeof Object.create === 'function') {
            types = Object.create(null);
        }

        for (name in Syntax) {
            if (Syntax.hasOwnProperty(name)) {
                types[name] = Syntax[name];
            }
        }

        if (typeof Object.freeze === 'function') {
            Object.freeze(types);
        }

        return types;
    }());

}));
/* vim: set sw=4 ts=4 et tw=80 : */

},{}],454:[function(require,module,exports){
// simple-fmt.js
// MIT licensed, see LICENSE file
// Copyright (c) 2013 Olov Lassus <olov.lassus@gmail.com>

var fmt = (function() {
    "use strict";

    function fmt(str, var_args) {
        var args = Array.prototype.slice.call(arguments, 1);
        return str.replace(/\{(\d+)\}/g, function(s, match) {
            return (match in args ? args[match] : s);
        });
    }

    function obj(str, obj) {
        return str.replace(/\{([_$a-zA-Z0-9][_$a-zA-Z0-9]*)\}/g, function(s, match) {
            return (match in obj ? obj[match] : s);
        });
    }

    function repeat(str, n) {
        return (new Array(n + 1)).join(str);
    }

    fmt.fmt = fmt;
    fmt.obj = obj;
    fmt.repeat = repeat;
    return fmt;
})();

if (typeof module !== "undefined" && typeof module.exports !== "undefined") {
    module.exports = fmt;
}

},{}],455:[function(require,module,exports){
// simple-is.js
// MIT licensed, see LICENSE file
// Copyright (c) 2013 Olov Lassus <olov.lassus@gmail.com>

var is = (function() {
    "use strict";

    var hasOwnProperty = Object.prototype.hasOwnProperty;
    var toString = Object.prototype.toString;
    var _undefined = void 0;

    return {
        nan: function(v) {
            return v !== v;
        },
        boolean: function(v) {
            return typeof v === "boolean";
        },
        number: function(v) {
            return typeof v === "number";
        },
        string: function(v) {
            return typeof v === "string";
        },
        fn: function(v) {
            return typeof v === "function";
        },
        object: function(v) {
            return v !== null && typeof v === "object";
        },
        primitive: function(v) {
            var t = typeof v;
            return v === null || v === _undefined ||
                t === "boolean" || t === "number" || t === "string";
        },
        array: Array.isArray || function(v) {
            return toString.call(v) === "[object Array]";
        },
        finitenumber: function(v) {
            return typeof v === "number" && isFinite(v);
        },
        someof: function(v, values) {
            return values.indexOf(v) >= 0;
        },
        noneof: function(v, values) {
            return values.indexOf(v) === -1;
        },
        own: function(obj, prop) {
            return hasOwnProperty.call(obj, prop);
        },
    };
})();

if (typeof module !== "undefined" && typeof module.exports !== "undefined") {
    module.exports = is;
}

},{}],456:[function(require,module,exports){
// stringmap.js
// MIT licensed, see LICENSE file
// Copyright (c) 2013 Olov Lassus <olov.lassus@gmail.com>

var StringMap = (function() {
    "use strict";

    // to save us a few characters
    var hasOwnProperty = Object.prototype.hasOwnProperty;

    var create = (function() {
        function hasOwnEnumerableProps(obj) {
            for (var prop in obj) {
                if (hasOwnProperty.call(obj, prop)) {
                    return true;
                }
            }
            return false;
        }
        // FF <= 3.6:
        // o = {}; o.hasOwnProperty("__proto__" or "__count__" or "__parent__") => true
        // o = {"__proto__": null}; Object.prototype.hasOwnProperty.call(o, "__proto__" or "__count__" or "__parent__") => false
        function hasOwnPollutedProps(obj) {
            return hasOwnProperty.call(obj, "__count__") || hasOwnProperty.call(obj, "__parent__");
        }

        var useObjectCreate = false;
        if (typeof Object.create === "function") {
            if (!hasOwnEnumerableProps(Object.create(null))) {
                useObjectCreate = true;
            }
        }
        if (useObjectCreate === false) {
            if (hasOwnEnumerableProps({})) {
                throw new Error("StringMap environment error 0, please file a bug at https://github.com/olov/stringmap/issues");
            }
        }
        // no throw yet means we can create objects without own enumerable props (safe-guard against VMs and shims)

        var o = (useObjectCreate ? Object.create(null) : {});
        var useProtoClear = false;
        if (hasOwnPollutedProps(o)) {
            o.__proto__ = null;
            if (hasOwnEnumerableProps(o) || hasOwnPollutedProps(o)) {
                throw new Error("StringMap environment error 1, please file a bug at https://github.com/olov/stringmap/issues");
            }
            useProtoClear = true;
        }
        // no throw yet means we can create objects without own polluted props (safe-guard against VMs and shims)

        return function() {
            var o = (useObjectCreate ? Object.create(null) : {});
            if (useProtoClear) {
                o.__proto__ = null;
            }
            return o;
        };
    })();

    // stringmap ctor
    function stringmap(optional_object) {
        // use with or without new
        if (!(this instanceof stringmap)) {
            return new stringmap(optional_object);
        }
        this.obj = create();
        this.hasProto = false; // false (no __proto__ key) or true (has __proto__ key)
        this.proto = undefined; // value for __proto__ key when hasProto is true, undefined otherwise

        if (optional_object) {
            this.setMany(optional_object);
        }
    };

    // primitive methods that deals with data representation
    stringmap.prototype.has = function(key) {
        // The type-check of key in has, get, set and delete is important because otherwise an object
        // {toString: function() { return "__proto__"; }} can avoid the key === "__proto__" test.
        // The alternative to type-checking would be to force string conversion, i.e. key = String(key);
        if (typeof key !== "string") {
            throw new Error("StringMap expected string key");
        }
        return (key === "__proto__" ?
            this.hasProto :
            hasOwnProperty.call(this.obj, key));
    };

    stringmap.prototype.get = function(key) {
        if (typeof key !== "string") {
            throw new Error("StringMap expected string key");
        }
        return (key === "__proto__" ?
            this.proto :
            (hasOwnProperty.call(this.obj, key) ? this.obj[key] : undefined));
    };

    stringmap.prototype.set = function(key, value) {
        if (typeof key !== "string") {
            throw new Error("StringMap expected string key");
        }
        if (key === "__proto__") {
            this.hasProto = true;
            this.proto = value;
        } else {
            this.obj[key] = value;
        }
    };

    stringmap.prototype.remove = function(key) {
        if (typeof key !== "string") {
            throw new Error("StringMap expected string key");
        }
        var didExist = this.has(key);
        if (key === "__proto__") {
            this.hasProto = false;
            this.proto = undefined;
        } else {
            delete this.obj[key];
        }
        return didExist;
    };

    // alias remove to delete but beware:
    // sm.delete("key"); // OK in ES5 and later
    // sm['delete']("key"); // OK in all ES versions
    // sm.remove("key"); // OK in all ES versions
    stringmap.prototype['delete'] = stringmap.prototype.remove;

    stringmap.prototype.isEmpty = function() {
        for (var key in this.obj) {
            if (hasOwnProperty.call(this.obj, key)) {
                return false;
            }
        }
        return !this.hasProto;
    };

    stringmap.prototype.size = function() {
        var len = 0;
        for (var key in this.obj) {
            if (hasOwnProperty.call(this.obj, key)) {
                ++len;
            }
        }
        return (this.hasProto ? len + 1 : len);
    };

    stringmap.prototype.keys = function() {
        var keys = [];
        for (var key in this.obj) {
            if (hasOwnProperty.call(this.obj, key)) {
                keys.push(key);
            }
        }
        if (this.hasProto) {
            keys.push("__proto__");
        }
        return keys;
    };

    stringmap.prototype.values = function() {
        var values = [];
        for (var key in this.obj) {
            if (hasOwnProperty.call(this.obj, key)) {
                values.push(this.obj[key]);
            }
        }
        if (this.hasProto) {
            values.push(this.proto);
        }
        return values;
    };

    stringmap.prototype.items = function() {
        var items = [];
        for (var key in this.obj) {
            if (hasOwnProperty.call(this.obj, key)) {
                items.push([key, this.obj[key]]);
            }
        }
        if (this.hasProto) {
            items.push(["__proto__", this.proto]);
        }
        return items;
    };


    // methods that rely on the above primitives
    stringmap.prototype.setMany = function(object) {
        if (object === null || (typeof object !== "object" && typeof object !== "function")) {
            throw new Error("StringMap expected Object");
        }
        for (var key in object) {
            if (hasOwnProperty.call(object, key)) {
                this.set(key, object[key]);
            }
        }
        return this;
    };

    stringmap.prototype.merge = function(other) {
        var keys = other.keys();
        for (var i = 0; i < keys.length; i++) {
            var key = keys[i];
            this.set(key, other.get(key));
        }
        return this;
    };

    stringmap.prototype.map = function(fn) {
        var keys = this.keys();
        for (var i = 0; i < keys.length; i++) {
            var key = keys[i];
            keys[i] = fn(this.get(key), key); // re-use keys array for results
        }
        return keys;
    };

    stringmap.prototype.forEach = function(fn) {
        var keys = this.keys();
        for (var i = 0; i < keys.length; i++) {
            var key = keys[i];
            fn(this.get(key), key);
        }
    };

    stringmap.prototype.clone = function() {
        var other = stringmap();
        return other.merge(this);
    };

    stringmap.prototype.toString = function() {
        var self = this;
        return "{" + this.keys().map(function(key) {
            return JSON.stringify(key) + ":" + JSON.stringify(self.get(key));
        }).join(",") + "}";
    };

    return stringmap;
})();

if (typeof module !== "undefined" && typeof module.exports !== "undefined") {
    module.exports = StringMap;
}

},{}],457:[function(require,module,exports){
// stringset.js
// MIT licensed, see LICENSE file
// Copyright (c) 2013 Olov Lassus <olov.lassus@gmail.com>

var StringSet = (function() {
    "use strict";

    // to save us a few characters
    var hasOwnProperty = Object.prototype.hasOwnProperty;

    var create = (function() {
        function hasOwnEnumerableProps(obj) {
            for (var prop in obj) {
                if (hasOwnProperty.call(obj, prop)) {
                    return true;
                }
            }
            return false;
        }

        // FF <= 3.6:
        // o = {}; o.hasOwnProperty("__proto__" or "__count__" or "__parent__") => true
        // o = {"__proto__": null}; Object.prototype.hasOwnProperty.call(o, "__proto__" or "__count__" or "__parent__") => false
        function hasOwnPollutedProps(obj) {
            return hasOwnProperty.call(obj, "__count__") || hasOwnProperty.call(obj, "__parent__");
        }

        var useObjectCreate = false;
        if (typeof Object.create === "function") {
            if (!hasOwnEnumerableProps(Object.create(null))) {
                useObjectCreate = true;
            }
        }
        if (useObjectCreate === false) {
            if (hasOwnEnumerableProps({})) {
                throw new Error("StringSet environment error 0, please file a bug at https://github.com/olov/stringset/issues");
            }
        }
        // no throw yet means we can create objects without own enumerable props (safe-guard against VMs and shims)

        var o = (useObjectCreate ? Object.create(null) : {});
        var useProtoClear = false;
        if (hasOwnPollutedProps(o)) {
            o.__proto__ = null;
            if (hasOwnEnumerableProps(o) || hasOwnPollutedProps(o)) {
                throw new Error("StringSet environment error 1, please file a bug at https://github.com/olov/stringset/issues");
            }
            useProtoClear = true;
        }
        // no throw yet means we can create objects without own polluted props (safe-guard against VMs and shims)

        return function() {
            var o = (useObjectCreate ? Object.create(null) : {});
            if (useProtoClear) {
                o.__proto__ = null;
            }
            return o;
        };
    })();

    // stringset ctor
    function stringset(optional_array) {
        // use with or without new
        if (!(this instanceof stringset)) {
            return new stringset(optional_array);
        }
        this.obj = create();
        this.hasProto = false; // false (no __proto__ item) or true (has __proto__ item)

        if (optional_array) {
            this.addMany(optional_array);
        }
    };

    // primitive methods that deals with data representation
    stringset.prototype.has = function(item) {
        // The type-check of item in has, get, set and delete is important because otherwise an object
        // {toString: function() { return "__proto__"; }} can avoid the item === "__proto__" test.
        // The alternative to type-checking would be to force string conversion, i.e. item = String(item);
        if (typeof item !== "string") {
            throw new Error("StringSet expected string item");
        }
        return (item === "__proto__" ?
            this.hasProto :
            hasOwnProperty.call(this.obj, item));
    };

    stringset.prototype.add = function(item) {
        if (typeof item !== "string") {
            throw new Error("StringSet expected string item");
        }
        if (item === "__proto__") {
            this.hasProto = true;
        } else {
            this.obj[item] = true;
        }
    };

    stringset.prototype.remove = function(item) {
        if (typeof item !== "string") {
            throw new Error("StringSet expected string item");
        }
        var didExist = this.has(item);
        if (item === "__proto__") {
            this.hasProto = false;
        } else {
            delete this.obj[item];
        }
        return didExist;
    };

    // alias remove to delete but beware:
    // ss.delete("key"); // OK in ES5 and later
    // ss['delete']("key"); // OK in all ES versions
    // ss.remove("key"); // OK in all ES versions
    stringset.prototype['delete'] = stringset.prototype.remove;

    stringset.prototype.isEmpty = function() {
        for (var item in this.obj) {
            if (hasOwnProperty.call(this.obj, item)) {
                return false;
            }
        }
        return !this.hasProto;
    };

    stringset.prototype.size = function() {
        var len = 0;
        for (var item in this.obj) {
            if (hasOwnProperty.call(this.obj, item)) {
                ++len;
            }
        }
        return (this.hasProto ? len + 1 : len);
    };

    stringset.prototype.items = function() {
        var items = [];
        for (var item in this.obj) {
            if (hasOwnProperty.call(this.obj, item)) {
                items.push(item);
            }
        }
        if (this.hasProto) {
            items.push("__proto__");
        }
        return items;
    };


    // methods that rely on the above primitives
    stringset.prototype.addMany = function(items) {
        if (!Array.isArray(items)) {
            throw new Error("StringSet expected array");
        }
        for (var i = 0; i < items.length; i++) {
            this.add(items[i]);
        }
        return this;
    };

    stringset.prototype.merge = function(other) {
        this.addMany(other.items());
        return this;
    };

    stringset.prototype.clone = function() {
        var other = stringset();
        return other.merge(this);
    };

    stringset.prototype.toString = function() {
        return "{" + this.items().map(JSON.stringify).join(",") + "}";
    };

    return stringset;
})();

if (typeof module !== "undefined" && typeof module.exports !== "undefined") {
    module.exports = StringSet;
}

},{}],458:[function(require,module,exports){
/*
  Copyright (C) 2013 Ariya Hidayat <ariya.hidayat@gmail.com>
  Copyright (C) 2013 Thaddee Tyl <thaddee.tyl@gmail.com>
  Copyright (C) 2012 Ariya Hidayat <ariya.hidayat@gmail.com>
  Copyright (C) 2012 Mathias Bynens <mathias@qiwi.be>
  Copyright (C) 2012 Joost-Wim Boekesteijn <joost-wim@boekesteijn.nl>
  Copyright (C) 2012 Kris Kowal <kris.kowal@cixar.com>
  Copyright (C) 2012 Yusuke Suzuki <utatane.tea@gmail.com>
  Copyright (C) 2012 Arpad Borsos <arpad.borsos@googlemail.com>
  Copyright (C) 2011 Ariya Hidayat <ariya.hidayat@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

(function (root, factory) {
    'use strict';

    // Universal Module Definition (UMD) to support AMD, CommonJS/Node.js,
    // Rhino, and plain browser loading.

    /* istanbul ignore next */
    if (typeof define === 'function' && define.amd) {
        define(['exports'], factory);
    } else if (typeof exports !== 'undefined') {
        factory(exports);
    } else {
        factory((root.esprima = {}));
    }
}(this, function (exports) {
    'use strict';

    var Token,
        TokenName,
        FnExprTokens,
        Syntax,
        PropertyKind,
        Messages,
        Regex,
        SyntaxTreeDelegate,
        XHTMLEntities,
        ClassPropertyType,
        source,
        strict,
        index,
        lineNumber,
        lineStart,
        length,
        delegate,
        lookahead,
        state,
        extra;

    Token = {
        BooleanLiteral: 1,
        EOF: 2,
        Identifier: 3,
        Keyword: 4,
        NullLiteral: 5,
        NumericLiteral: 6,
        Punctuator: 7,
        StringLiteral: 8,
        RegularExpression: 9,
        Template: 10,
        JSXIdentifier: 11,
        JSXText: 12
    };

    TokenName = {};
    TokenName[Token.BooleanLiteral] = 'Boolean';
    TokenName[Token.EOF] = '<end>';
    TokenName[Token.Identifier] = 'Identifier';
    TokenName[Token.Keyword] = 'Keyword';
    TokenName[Token.NullLiteral] = 'Null';
    TokenName[Token.NumericLiteral] = 'Numeric';
    TokenName[Token.Punctuator] = 'Punctuator';
    TokenName[Token.StringLiteral] = 'String';
    TokenName[Token.JSXIdentifier] = 'JSXIdentifier';
    TokenName[Token.JSXText] = 'JSXText';
    TokenName[Token.RegularExpression] = 'RegularExpression';

    // A function following one of those tokens is an expression.
    FnExprTokens = ['(', '{', '[', 'in', 'typeof', 'instanceof', 'new',
                    'return', 'case', 'delete', 'throw', 'void',
                    // assignment operators
                    '=', '+=', '-=', '*=', '/=', '%=', '<<=', '>>=', '>>>=',
                    '&=', '|=', '^=', ',',
                    // binary/unary operators
                    '+', '-', '*', '/', '%', '++', '--', '<<', '>>', '>>>', '&',
                    '|', '^', '!', '~', '&&', '||', '?', ':', '===', '==', '>=',
                    '<=', '<', '>', '!=', '!=='];

    Syntax = {
        AnyTypeAnnotation: 'AnyTypeAnnotation',
        ArrayExpression: 'ArrayExpression',
        ArrayPattern: 'ArrayPattern',
        ArrayTypeAnnotation: 'ArrayTypeAnnotation',
        ArrowFunctionExpression: 'ArrowFunctionExpression',
        AssignmentExpression: 'AssignmentExpression',
        BinaryExpression: 'BinaryExpression',
        BlockStatement: 'BlockStatement',
        BooleanTypeAnnotation: 'BooleanTypeAnnotation',
        BreakStatement: 'BreakStatement',
        CallExpression: 'CallExpression',
        CatchClause: 'CatchClause',
        ClassBody: 'ClassBody',
        ClassDeclaration: 'ClassDeclaration',
        ClassExpression: 'ClassExpression',
        ClassImplements: 'ClassImplements',
        ClassProperty: 'ClassProperty',
        ComprehensionBlock: 'ComprehensionBlock',
        ComprehensionExpression: 'ComprehensionExpression',
        ConditionalExpression: 'ConditionalExpression',
        ContinueStatement: 'ContinueStatement',
        DebuggerStatement: 'DebuggerStatement',
        DeclareClass: 'DeclareClass',
        DeclareFunction: 'DeclareFunction',
        DeclareModule: 'DeclareModule',
        DeclareVariable: 'DeclareVariable',
        DoWhileStatement: 'DoWhileStatement',
        EmptyStatement: 'EmptyStatement',
        ExportDeclaration: 'ExportDeclaration',
        ExportBatchSpecifier: 'ExportBatchSpecifier',
        ExportSpecifier: 'ExportSpecifier',
        ExpressionStatement: 'ExpressionStatement',
        ForInStatement: 'ForInStatement',
        ForOfStatement: 'ForOfStatement',
        ForStatement: 'ForStatement',
        FunctionDeclaration: 'FunctionDeclaration',
        FunctionExpression: 'FunctionExpression',
        FunctionTypeAnnotation: 'FunctionTypeAnnotation',
        FunctionTypeParam: 'FunctionTypeParam',
        GenericTypeAnnotation: 'GenericTypeAnnotation',
        Identifier: 'Identifier',
        IfStatement: 'IfStatement',
        ImportDeclaration: 'ImportDeclaration',
        ImportDefaultSpecifier: 'ImportDefaultSpecifier',
        ImportNamespaceSpecifier: 'ImportNamespaceSpecifier',
        ImportSpecifier: 'ImportSpecifier',
        InterfaceDeclaration: 'InterfaceDeclaration',
        InterfaceExtends: 'InterfaceExtends',
        IntersectionTypeAnnotation: 'IntersectionTypeAnnotation',
        LabeledStatement: 'LabeledStatement',
        Literal: 'Literal',
        LogicalExpression: 'LogicalExpression',
        MemberExpression: 'MemberExpression',
        MethodDefinition: 'MethodDefinition',
        ModuleSpecifier: 'ModuleSpecifier',
        NewExpression: 'NewExpression',
        NullableTypeAnnotation: 'NullableTypeAnnotation',
        NumberTypeAnnotation: 'NumberTypeAnnotation',
        ObjectExpression: 'ObjectExpression',
        ObjectPattern: 'ObjectPattern',
        ObjectTypeAnnotation: 'ObjectTypeAnnotation',
        ObjectTypeCallProperty: 'ObjectTypeCallProperty',
        ObjectTypeIndexer: 'ObjectTypeIndexer',
        ObjectTypeProperty: 'ObjectTypeProperty',
        Program: 'Program',
        Property: 'Property',
        QualifiedTypeIdentifier: 'QualifiedTypeIdentifier',
        ReturnStatement: 'ReturnStatement',
        SequenceExpression: 'SequenceExpression',
        SpreadElement: 'SpreadElement',
        SpreadProperty: 'SpreadProperty',
        StringLiteralTypeAnnotation: 'StringLiteralTypeAnnotation',
        StringTypeAnnotation: 'StringTypeAnnotation',
        SwitchCase: 'SwitchCase',
        SwitchStatement: 'SwitchStatement',
        TaggedTemplateExpression: 'TaggedTemplateExpression',
        TemplateElement: 'TemplateElement',
        TemplateLiteral: 'TemplateLiteral',
        ThisExpression: 'ThisExpression',
        ThrowStatement: 'ThrowStatement',
        TupleTypeAnnotation: 'TupleTypeAnnotation',
        TryStatement: 'TryStatement',
        TypeAlias: 'TypeAlias',
        TypeAnnotation: 'TypeAnnotation',
        TypeCastExpression: 'TypeCastExpression',
        TypeofTypeAnnotation: 'TypeofTypeAnnotation',
        TypeParameterDeclaration: 'TypeParameterDeclaration',
        TypeParameterInstantiation: 'TypeParameterInstantiation',
        UnaryExpression: 'UnaryExpression',
        UnionTypeAnnotation: 'UnionTypeAnnotation',
        UpdateExpression: 'UpdateExpression',
        VariableDeclaration: 'VariableDeclaration',
        VariableDeclarator: 'VariableDeclarator',
        VoidTypeAnnotation: 'VoidTypeAnnotation',
        WhileStatement: 'WhileStatement',
        WithStatement: 'WithStatement',
        JSXIdentifier: 'JSXIdentifier',
        JSXNamespacedName: 'JSXNamespacedName',
        JSXMemberExpression: 'JSXMemberExpression',
        JSXEmptyExpression: 'JSXEmptyExpression',
        JSXExpressionContainer: 'JSXExpressionContainer',
        JSXElement: 'JSXElement',
        JSXClosingElement: 'JSXClosingElement',
        JSXOpeningElement: 'JSXOpeningElement',
        JSXAttribute: 'JSXAttribute',
        JSXSpreadAttribute: 'JSXSpreadAttribute',
        JSXText: 'JSXText',
        YieldExpression: 'YieldExpression',
        AwaitExpression: 'AwaitExpression'
    };

    PropertyKind = {
        Data: 1,
        Get: 2,
        Set: 4
    };

    ClassPropertyType = {
        'static': 'static',
        prototype: 'prototype'
    };

    // Error messages should be identical to V8.
    Messages = {
        UnexpectedToken: 'Unexpected token %0',
        UnexpectedNumber: 'Unexpected number',
        UnexpectedString: 'Unexpected string',
        UnexpectedIdentifier: 'Unexpected identifier',
        UnexpectedReserved: 'Unexpected reserved word',
        UnexpectedTemplate: 'Unexpected quasi %0',
        UnexpectedEOS: 'Unexpected end of input',
        NewlineAfterThrow: 'Illegal newline after throw',
        InvalidRegExp: 'Invalid regular expression',
        UnterminatedRegExp: 'Invalid regular expression: missing /',
        InvalidLHSInAssignment: 'Invalid left-hand side in assignment',
        InvalidLHSInFormalsList: 'Invalid left-hand side in formals list',
        InvalidLHSInForIn: 'Invalid left-hand side in for-in',
        MultipleDefaultsInSwitch: 'More than one default clause in switch statement',
        NoCatchOrFinally: 'Missing catch or finally after try',
        UnknownLabel: 'Undefined label \'%0\'',
        Redeclaration: '%0 \'%1\' has already been declared',
        IllegalContinue: 'Illegal continue statement',
        IllegalBreak: 'Illegal break statement',
        IllegalDuplicateClassProperty: 'Illegal duplicate property in class definition',
        IllegalClassConstructorProperty: 'Illegal constructor property in class definition',
        IllegalReturn: 'Illegal return statement',
        IllegalSpread: 'Illegal spread element',
        StrictModeWith: 'Strict mode code may not include a with statement',
        StrictCatchVariable: 'Catch variable may not be eval or arguments in strict mode',
        StrictVarName: 'Variable name may not be eval or arguments in strict mode',
        StrictParamName: 'Parameter name eval or arguments is not allowed in strict mode',
        StrictParamDupe: 'Strict mode function may not have duplicate parameter names',
        ParameterAfterRestParameter: 'Rest parameter must be final parameter of an argument list',
        DefaultRestParameter: 'Rest parameter can not have a default value',
        ElementAfterSpreadElement: 'Spread must be the final element of an element list',
        PropertyAfterSpreadProperty: 'A rest property must be the final property of an object literal',
        ObjectPatternAsRestParameter: 'Invalid rest parameter',
        ObjectPatternAsSpread: 'Invalid spread argument',
        StrictFunctionName: 'Function name may not be eval or arguments in strict mode',
        StrictOctalLiteral: 'Octal literals are not allowed in strict mode.',
        StrictDelete: 'Delete of an unqualified identifier in strict mode.',
        StrictDuplicateProperty: 'Duplicate data property in object literal not allowed in strict mode',
        AccessorDataProperty: 'Object literal may not have data and accessor property with the same name',
        AccessorGetSet: 'Object literal may not have multiple get/set accessors with the same name',
        StrictLHSAssignment: 'Assignment to eval or arguments is not allowed in strict mode',
        StrictLHSPostfix: 'Postfix increment/decrement may not have eval or arguments operand in strict mode',
        StrictLHSPrefix: 'Prefix increment/decrement may not have eval or arguments operand in strict mode',
        StrictReservedWord: 'Use of future reserved word in strict mode',
        MissingFromClause: 'Missing from clause',
        NoAsAfterImportNamespace: 'Missing as after import *',
        InvalidModuleSpecifier: 'Invalid module specifier',
        IllegalImportDeclaration: 'Illegal import declaration',
        IllegalExportDeclaration: 'Illegal export declaration',
        NoUninitializedConst: 'Const must be initialized',
        ComprehensionRequiresBlock: 'Comprehension must have at least one block',
        ComprehensionError: 'Comprehension Error',
        EachNotAllowed: 'Each is not supported',
        InvalidJSXAttributeValue: 'JSX value should be either an expression or a quoted JSX text',
        ExpectedJSXClosingTag: 'Expected corresponding JSX closing tag for %0',
        AdjacentJSXElements: 'Adjacent JSX elements must be wrapped in an enclosing tag',
        ConfusedAboutFunctionType: 'Unexpected token =>. It looks like ' +
            'you are trying to write a function type, but you ended up ' +
            'writing a grouped type followed by an =>, which is a syntax ' +
            'error. Remember, function type parameters are named so function ' +
            'types look like (name1: type1, name2: type2) => returnType. You ' +
            'probably wrote (type1) => returnType'
    };

    // See also tools/generate-unicode-regex.py.
    Regex = {
        NonAsciiIdentifierStart: new RegExp('[\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0370-\u0374\u0376\u0377\u037a-\u037d\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u048a-\u0527\u0531-\u0556\u0559\u0561-\u0587\u05d0-\u05ea\u05f0-\u05f2\u0620-\u064a\u066e\u066f\u0671-\u06d3\u06d5\u06e5\u06e6\u06ee\u06ef\u06fa-\u06fc\u06ff\u0710\u0712-\u072f\u074d-\u07a5\u07b1\u07ca-\u07ea\u07f4\u07f5\u07fa\u0800-\u0815\u081a\u0824\u0828\u0840-\u0858\u08a0\u08a2-\u08ac\u0904-\u0939\u093d\u0950\u0958-\u0961\u0971-\u0977\u0979-\u097f\u0985-\u098c\u098f\u0990\u0993-\u09a8\u09aa-\u09b0\u09b2\u09b6-\u09b9\u09bd\u09ce\u09dc\u09dd\u09df-\u09e1\u09f0\u09f1\u0a05-\u0a0a\u0a0f\u0a10\u0a13-\u0a28\u0a2a-\u0a30\u0a32\u0a33\u0a35\u0a36\u0a38\u0a39\u0a59-\u0a5c\u0a5e\u0a72-\u0a74\u0a85-\u0a8d\u0a8f-\u0a91\u0a93-\u0aa8\u0aaa-\u0ab0\u0ab2\u0ab3\u0ab5-\u0ab9\u0abd\u0ad0\u0ae0\u0ae1\u0b05-\u0b0c\u0b0f\u0b10\u0b13-\u0b28\u0b2a-\u0b30\u0b32\u0b33\u0b35-\u0b39\u0b3d\u0b5c\u0b5d\u0b5f-\u0b61\u0b71\u0b83\u0b85-\u0b8a\u0b8e-\u0b90\u0b92-\u0b95\u0b99\u0b9a\u0b9c\u0b9e\u0b9f\u0ba3\u0ba4\u0ba8-\u0baa\u0bae-\u0bb9\u0bd0\u0c05-\u0c0c\u0c0e-\u0c10\u0c12-\u0c28\u0c2a-\u0c33\u0c35-\u0c39\u0c3d\u0c58\u0c59\u0c60\u0c61\u0c85-\u0c8c\u0c8e-\u0c90\u0c92-\u0ca8\u0caa-\u0cb3\u0cb5-\u0cb9\u0cbd\u0cde\u0ce0\u0ce1\u0cf1\u0cf2\u0d05-\u0d0c\u0d0e-\u0d10\u0d12-\u0d3a\u0d3d\u0d4e\u0d60\u0d61\u0d7a-\u0d7f\u0d85-\u0d96\u0d9a-\u0db1\u0db3-\u0dbb\u0dbd\u0dc0-\u0dc6\u0e01-\u0e30\u0e32\u0e33\u0e40-\u0e46\u0e81\u0e82\u0e84\u0e87\u0e88\u0e8a\u0e8d\u0e94-\u0e97\u0e99-\u0e9f\u0ea1-\u0ea3\u0ea5\u0ea7\u0eaa\u0eab\u0ead-\u0eb0\u0eb2\u0eb3\u0ebd\u0ec0-\u0ec4\u0ec6\u0edc-\u0edf\u0f00\u0f40-\u0f47\u0f49-\u0f6c\u0f88-\u0f8c\u1000-\u102a\u103f\u1050-\u1055\u105a-\u105d\u1061\u1065\u1066\u106e-\u1070\u1075-\u1081\u108e\u10a0-\u10c5\u10c7\u10cd\u10d0-\u10fa\u10fc-\u1248\u124a-\u124d\u1250-\u1256\u1258\u125a-\u125d\u1260-\u1288\u128a-\u128d\u1290-\u12b0\u12b2-\u12b5\u12b8-\u12be\u12c0\u12c2-\u12c5\u12c8-\u12d6\u12d8-\u1310\u1312-\u1315\u1318-\u135a\u1380-\u138f\u13a0-\u13f4\u1401-\u166c\u166f-\u167f\u1681-\u169a\u16a0-\u16ea\u16ee-\u16f0\u1700-\u170c\u170e-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176c\u176e-\u1770\u1780-\u17b3\u17d7\u17dc\u1820-\u1877\u1880-\u18a8\u18aa\u18b0-\u18f5\u1900-\u191c\u1950-\u196d\u1970-\u1974\u1980-\u19ab\u19c1-\u19c7\u1a00-\u1a16\u1a20-\u1a54\u1aa7\u1b05-\u1b33\u1b45-\u1b4b\u1b83-\u1ba0\u1bae\u1baf\u1bba-\u1be5\u1c00-\u1c23\u1c4d-\u1c4f\u1c5a-\u1c7d\u1ce9-\u1cec\u1cee-\u1cf1\u1cf5\u1cf6\u1d00-\u1dbf\u1e00-\u1f15\u1f18-\u1f1d\u1f20-\u1f45\u1f48-\u1f4d\u1f50-\u1f57\u1f59\u1f5b\u1f5d\u1f5f-\u1f7d\u1f80-\u1fb4\u1fb6-\u1fbc\u1fbe\u1fc2-\u1fc4\u1fc6-\u1fcc\u1fd0-\u1fd3\u1fd6-\u1fdb\u1fe0-\u1fec\u1ff2-\u1ff4\u1ff6-\u1ffc\u2071\u207f\u2090-\u209c\u2102\u2107\u210a-\u2113\u2115\u2119-\u211d\u2124\u2126\u2128\u212a-\u212d\u212f-\u2139\u213c-\u213f\u2145-\u2149\u214e\u2160-\u2188\u2c00-\u2c2e\u2c30-\u2c5e\u2c60-\u2ce4\u2ceb-\u2cee\u2cf2\u2cf3\u2d00-\u2d25\u2d27\u2d2d\u2d30-\u2d67\u2d6f\u2d80-\u2d96\u2da0-\u2da6\u2da8-\u2dae\u2db0-\u2db6\u2db8-\u2dbe\u2dc0-\u2dc6\u2dc8-\u2dce\u2dd0-\u2dd6\u2dd8-\u2dde\u2e2f\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303c\u3041-\u3096\u309d-\u309f\u30a1-\u30fa\u30fc-\u30ff\u3105-\u312d\u3131-\u318e\u31a0-\u31ba\u31f0-\u31ff\u3400-\u4db5\u4e00-\u9fcc\ua000-\ua48c\ua4d0-\ua4fd\ua500-\ua60c\ua610-\ua61f\ua62a\ua62b\ua640-\ua66e\ua67f-\ua697\ua6a0-\ua6ef\ua717-\ua71f\ua722-\ua788\ua78b-\ua78e\ua790-\ua793\ua7a0-\ua7aa\ua7f8-\ua801\ua803-\ua805\ua807-\ua80a\ua80c-\ua822\ua840-\ua873\ua882-\ua8b3\ua8f2-\ua8f7\ua8fb\ua90a-\ua925\ua930-\ua946\ua960-\ua97c\ua984-\ua9b2\ua9cf\uaa00-\uaa28\uaa40-\uaa42\uaa44-\uaa4b\uaa60-\uaa76\uaa7a\uaa80-\uaaaf\uaab1\uaab5\uaab6\uaab9-\uaabd\uaac0\uaac2\uaadb-\uaadd\uaae0-\uaaea\uaaf2-\uaaf4\uab01-\uab06\uab09-\uab0e\uab11-\uab16\uab20-\uab26\uab28-\uab2e\uabc0-\uabe2\uac00-\ud7a3\ud7b0-\ud7c6\ud7cb-\ud7fb\uf900-\ufa6d\ufa70-\ufad9\ufb00-\ufb06\ufb13-\ufb17\ufb1d\ufb1f-\ufb28\ufb2a-\ufb36\ufb38-\ufb3c\ufb3e\ufb40\ufb41\ufb43\ufb44\ufb46-\ufbb1\ufbd3-\ufd3d\ufd50-\ufd8f\ufd92-\ufdc7\ufdf0-\ufdfb\ufe70-\ufe74\ufe76-\ufefc\uff21-\uff3a\uff41-\uff5a\uff66-\uffbe\uffc2-\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc]'),
        NonAsciiIdentifierPart: new 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\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc]'),
        LeadingZeros: new RegExp('^0+(?!$)')
    };

    // Ensure the condition is true, otherwise throw an error.
    // This is only to have a better contract semantic, i.e. another safety net
    // to catch a logic error. The condition shall be fulfilled in normal case.
    // Do NOT use this to enforce a certain condition on any user input.

    function assert(condition, message) {
        /* istanbul ignore if */
        if (!condition) {
            throw new Error('ASSERT: ' + message);
        }
    }

    function StringMap() {
        this.$data = {};
    }

    StringMap.prototype.get = function (key) {
        key = '$' + key;
        return this.$data[key];
    };

    StringMap.prototype.set = function (key, value) {
        key = '$' + key;
        this.$data[key] = value;
        return this;
    };

    StringMap.prototype.has = function (key) {
        key = '$' + key;
        return Object.prototype.hasOwnProperty.call(this.$data, key);
    };

    StringMap.prototype.delete = function (key) {
        key = '$' + key;
        return delete this.$data[key];
    };

    function isDecimalDigit(ch) {
        return (ch >= 48 && ch <= 57);   // 0..9
    }

    function isHexDigit(ch) {
        return '0123456789abcdefABCDEF'.indexOf(ch) >= 0;
    }

    function isOctalDigit(ch) {
        return '01234567'.indexOf(ch) >= 0;
    }


    // 7.2 White Space

    function isWhiteSpace(ch) {
        return (ch === 32) ||  // space
            (ch === 9) ||      // tab
            (ch === 0xB) ||
            (ch === 0xC) ||
            (ch === 0xA0) ||
            (ch >= 0x1680 && '\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\uFEFF'.indexOf(String.fromCharCode(ch)) > 0);
    }

    // 7.3 Line Terminators

    function isLineTerminator(ch) {
        return (ch === 10) || (ch === 13) || (ch === 0x2028) || (ch === 0x2029);
    }

    // 7.6 Identifier Names and Identifiers

    function isIdentifierStart(ch) {
        return (ch === 36) || (ch === 95) ||  // $ (dollar) and _ (underscore)
            (ch >= 65 && ch <= 90) ||         // A..Z
            (ch >= 97 && ch <= 122) ||        // a..z
            (ch === 92) ||                    // \ (backslash)
            ((ch >= 0x80) && Regex.NonAsciiIdentifierStart.test(String.fromCharCode(ch)));
    }

    function isIdentifierPart(ch) {
        return (ch === 36) || (ch === 95) ||  // $ (dollar) and _ (underscore)
            (ch >= 65 && ch <= 90) ||         // A..Z
            (ch >= 97 && ch <= 122) ||        // a..z
            (ch >= 48 && ch <= 57) ||         // 0..9
            (ch === 92) ||                    // \ (backslash)
            ((ch >= 0x80) && Regex.NonAsciiIdentifierPart.test(String.fromCharCode(ch)));
    }

    // 7.6.1.2 Future Reserved Words

    function isFutureReservedWord(id) {
        switch (id) {
        case 'class':
        case 'enum':
        case 'export':
        case 'extends':
        case 'import':
        case 'super':
            return true;
        default:
            return false;
        }
    }

    function isStrictModeReservedWord(id) {
        switch (id) {
        case 'implements':
        case 'interface':
        case 'package':
        case 'private':
        case 'protected':
        case 'public':
        case 'static':
        case 'yield':
        case 'let':
            return true;
        default:
            return false;
        }
    }

    function isRestrictedWord(id) {
        return id === 'eval' || id === 'arguments';
    }

    // 7.6.1.1 Keywords

    function isKeyword(id) {
        if (strict && isStrictModeReservedWord(id)) {
            return true;
        }

        // 'const' is specialized as Keyword in V8.
        // 'yield' is only treated as a keyword in strict mode.
        // 'let' is for compatiblity with SpiderMonkey and ES.next.
        // Some others are from future reserved words.

        switch (id.length) {
        case 2:
            return (id === 'if') || (id === 'in') || (id === 'do');
        case 3:
            return (id === 'var') || (id === 'for') || (id === 'new') ||
                (id === 'try') || (id === 'let');
        case 4:
            return (id === 'this') || (id === 'else') || (id === 'case') ||
                (id === 'void') || (id === 'with') || (id === 'enum');
        case 5:
            return (id === 'while') || (id === 'break') || (id === 'catch') ||
                (id === 'throw') || (id === 'const') ||
                (id === 'class') || (id === 'super');
        case 6:
            return (id === 'return') || (id === 'typeof') || (id === 'delete') ||
                (id === 'switch') || (id === 'export') || (id === 'import');
        case 7:
            return (id === 'default') || (id === 'finally') || (id === 'extends');
        case 8:
            return (id === 'function') || (id === 'continue') || (id === 'debugger');
        case 10:
            return (id === 'instanceof');
        default:
            return false;
        }
    }

    // 7.4 Comments

    function addComment(type, value, start, end, loc) {
        var comment;
        assert(typeof start === 'number', 'Comment must have valid position');

        // Because the way the actual token is scanned, often the comments
        // (if any) are skipped twice during the lexical analysis.
        // Thus, we need to skip adding a comment if the comment array already
        // handled it.
        if (state.lastCommentStart >= start) {
            return;
        }
        state.lastCommentStart = start;

        comment = {
            type: type,
            value: value
        };
        if (extra.range) {
            comment.range = [start, end];
        }
        if (extra.loc) {
            comment.loc = loc;
        }
        extra.comments.push(comment);
        if (extra.attachComment) {
            extra.leadingComments.push(comment);
            extra.trailingComments.push(comment);
        }
    }

    function skipSingleLineComment() {
        var start, loc, ch, comment;

        start = index - 2;
        loc = {
            start: {
                line: lineNumber,
                column: index - lineStart - 2
            }
        };

        while (index < length) {
            ch = source.charCodeAt(index);
            ++index;
            if (isLineTerminator(ch)) {
                if (extra.comments) {
                    comment = source.slice(start + 2, index - 1);
                    loc.end = {
                        line: lineNumber,
                        column: index - lineStart - 1
                    };
                    addComment('Line', comment, start, index - 1, loc);
                }
                if (ch === 13 && source.charCodeAt(index) === 10) {
                    ++index;
                }
                ++lineNumber;
                lineStart = index;
                return;
            }
        }

        if (extra.comments) {
            comment = source.slice(start + 2, index);
            loc.end = {
                line: lineNumber,
                column: index - lineStart
            };
            addComment('Line', comment, start, index, loc);
        }
    }

    function skipMultiLineComment() {
        var start, loc, ch, comment;

        if (extra.comments) {
            start = index - 2;
            loc = {
                start: {
                    line: lineNumber,
                    column: index - lineStart - 2
                }
            };
        }

        while (index < length) {
            ch = source.charCodeAt(index);
            if (isLineTerminator(ch)) {
                if (ch === 13 && source.charCodeAt(index + 1) === 10) {
                    ++index;
                }
                ++lineNumber;
                ++index;
                lineStart = index;
                if (index >= length) {
                    throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
                }
            } else if (ch === 42) {
                // Block comment ends with '*/' (char #42, char #47).
                if (source.charCodeAt(index + 1) === 47) {
                    ++index;
                    ++index;
                    if (extra.comments) {
                        comment = source.slice(start + 2, index - 2);
                        loc.end = {
                            line: lineNumber,
                            column: index - lineStart
                        };
                        addComment('Block', comment, start, index, loc);
                    }
                    return;
                }
                ++index;
            } else {
                ++index;
            }
        }

        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
    }

    function skipComment() {
        var ch;

        while (index < length) {
            ch = source.charCodeAt(index);

            if (isWhiteSpace(ch)) {
                ++index;
            } else if (isLineTerminator(ch)) {
                ++index;
                if (ch === 13 && source.charCodeAt(index) === 10) {
                    ++index;
                }
                ++lineNumber;
                lineStart = index;
            } else if (ch === 47) { // 47 is '/'
                ch = source.charCodeAt(index + 1);
                if (ch === 47) {
                    ++index;
                    ++index;
                    skipSingleLineComment();
                } else if (ch === 42) {  // 42 is '*'
                    ++index;
                    ++index;
                    skipMultiLineComment();
                } else {
                    break;
                }
            } else {
                break;
            }
        }
    }

    function scanHexEscape(prefix) {
        var i, len, ch, code = 0;

        len = (prefix === 'u') ? 4 : 2;
        for (i = 0; i < len; ++i) {
            if (index < length && isHexDigit(source[index])) {
                ch = source[index++];
                code = code * 16 + '0123456789abcdef'.indexOf(ch.toLowerCase());
            } else {
                return '';
            }
        }
        return String.fromCharCode(code);
    }

    function scanUnicodeCodePointEscape() {
        var ch, code, cu1, cu2;

        ch = source[index];
        code = 0;

        // At least, one hex digit is required.
        if (ch === '}') {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        while (index < length) {
            ch = source[index++];
            if (!isHexDigit(ch)) {
                break;
            }
            code = code * 16 + '0123456789abcdef'.indexOf(ch.toLowerCase());
        }

        if (code > 0x10FFFF || ch !== '}') {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        // UTF-16 Encoding
        if (code <= 0xFFFF) {
            return String.fromCharCode(code);
        }
        cu1 = ((code - 0x10000) >> 10) + 0xD800;
        cu2 = ((code - 0x10000) & 1023) + 0xDC00;
        return String.fromCharCode(cu1, cu2);
    }

    function getEscapedIdentifier() {
        var ch, id;

        ch = source.charCodeAt(index++);
        id = String.fromCharCode(ch);

        // '\u' (char #92, char #117) denotes an escaped character.
        if (ch === 92) {
            if (source.charCodeAt(index) !== 117) {
                throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
            }
            ++index;
            ch = scanHexEscape('u');
            if (!ch || ch === '\\' || !isIdentifierStart(ch.charCodeAt(0))) {
                throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
            }
            id = ch;
        }

        while (index < length) {
            ch = source.charCodeAt(index);
            if (!isIdentifierPart(ch)) {
                break;
            }
            ++index;
            id += String.fromCharCode(ch);

            // '\u' (char #92, char #117) denotes an escaped character.
            if (ch === 92) {
                id = id.substr(0, id.length - 1);
                if (source.charCodeAt(index) !== 117) {
                    throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
                }
                ++index;
                ch = scanHexEscape('u');
                if (!ch || ch === '\\' || !isIdentifierPart(ch.charCodeAt(0))) {
                    throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
                }
                id += ch;
            }
        }

        return id;
    }

    function getIdentifier() {
        var start, ch;

        start = index++;
        while (index < length) {
            ch = source.charCodeAt(index);
            if (ch === 92) {
                // Blackslash (char #92) marks Unicode escape sequence.
                index = start;
                return getEscapedIdentifier();
            }
            if (isIdentifierPart(ch)) {
                ++index;
            } else {
                break;
            }
        }

        return source.slice(start, index);
    }

    function scanIdentifier() {
        var start, id, type;

        start = index;

        // Backslash (char #92) starts an escaped character.
        id = (source.charCodeAt(index) === 92) ? getEscapedIdentifier() : getIdentifier();

        // There is no keyword or literal with only one character.
        // Thus, it must be an identifier.
        if (id.length === 1) {
            type = Token.Identifier;
        } else if (isKeyword(id)) {
            type = Token.Keyword;
        } else if (id === 'null') {
            type = Token.NullLiteral;
        } else if (id === 'true' || id === 'false') {
            type = Token.BooleanLiteral;
        } else {
            type = Token.Identifier;
        }

        return {
            type: type,
            value: id,
            lineNumber: lineNumber,
            lineStart: lineStart,
            range: [start, index]
        };
    }


    // 7.7 Punctuators

    function scanPunctuator() {
        var start = index,
            code = source.charCodeAt(index),
            code2,
            ch1 = source[index],
            ch2,
            ch3,
            ch4;

        if (state.inJSXTag || state.inJSXChild) {
            // Don't need to check for '{' and '}' as it's already handled
            // correctly by default.
            switch (code) {
            case 60:  // <
            case 62:  // >
                ++index;
                return {
                    type: Token.Punctuator,
                    value: String.fromCharCode(code),
                    lineNumber: lineNumber,
                    lineStart: lineStart,
                    range: [start, index]
                };
            }
        }

        switch (code) {
        // Check for most common single-character punctuators.
        case 40:   // ( open bracket
        case 41:   // ) close bracket
        case 59:   // ; semicolon
        case 44:   // , comma
        case 123:  // { open curly brace
        case 125:  // } close curly brace
        case 91:   // [
        case 93:   // ]
        case 58:   // :
        case 63:   // ?
        case 126:  // ~
            ++index;
            if (extra.tokenize) {
                if (code === 40) {
                    extra.openParenToken = extra.tokens.length;
                } else if (code === 123) {
                    extra.openCurlyToken = extra.tokens.length;
                }
            }
            return {
                type: Token.Punctuator,
                value: String.fromCharCode(code),
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };

        default:
            code2 = source.charCodeAt(index + 1);

            // '=' (char #61) marks an assignment or comparison operator.
            if (code2 === 61) {
                switch (code) {
                case 37:  // %
                case 38:  // &
                case 42:  // *:
                case 43:  // +
                case 45:  // -
                case 47:  // /
                case 60:  // <
                case 62:  // >
                case 94:  // ^
                case 124: // |
                    index += 2;
                    return {
                        type: Token.Punctuator,
                        value: String.fromCharCode(code) + String.fromCharCode(code2),
                        lineNumber: lineNumber,
                        lineStart: lineStart,
                        range: [start, index]
                    };

                case 33: // !
                case 61: // =
                    index += 2;

                    // !== and ===
                    if (source.charCodeAt(index) === 61) {
                        ++index;
                    }
                    return {
                        type: Token.Punctuator,
                        value: source.slice(start, index),
                        lineNumber: lineNumber,
                        lineStart: lineStart,
                        range: [start, index]
                    };
                default:
                    break;
                }
            }
            break;
        }

        // Peek more characters.

        ch2 = source[index + 1];
        ch3 = source[index + 2];
        ch4 = source[index + 3];

        // 4-character punctuator: >>>=

        if (ch1 === '>' && ch2 === '>' && ch3 === '>') {
            if (ch4 === '=') {
                index += 4;
                return {
                    type: Token.Punctuator,
                    value: '>>>=',
                    lineNumber: lineNumber,
                    lineStart: lineStart,
                    range: [start, index]
                };
            }
        }

        // 3-character punctuators: === !== >>> <<= >>=

        if (ch1 === '>' && ch2 === '>' && ch3 === '>') {
            index += 3;
            return {
                type: Token.Punctuator,
                value: '>>>',
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }

        if (ch1 === '<' && ch2 === '<' && ch3 === '=') {
            index += 3;
            return {
                type: Token.Punctuator,
                value: '<<=',
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }

        if (ch1 === '>' && ch2 === '>' && ch3 === '=') {
            index += 3;
            return {
                type: Token.Punctuator,
                value: '>>=',
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }

        if (ch1 === '.' && ch2 === '.' && ch3 === '.') {
            index += 3;
            return {
                type: Token.Punctuator,
                value: '...',
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }

        // Other 2-character punctuators: ++ -- << >> && ||

        // Don't match these tokens if we're in a type, since they never can
        // occur and can mess up types like Map<string, Array<string>>
        if (ch1 === ch2 && ('+-<>&|'.indexOf(ch1) >= 0) && !state.inType) {
            index += 2;
            return {
                type: Token.Punctuator,
                value: ch1 + ch2,
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }

        if (ch1 === '=' && ch2 === '>') {
            index += 2;
            return {
                type: Token.Punctuator,
                value: '=>',
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }

        if ('<>=!+-*%&|^/'.indexOf(ch1) >= 0) {
            ++index;
            return {
                type: Token.Punctuator,
                value: ch1,
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }

        if (ch1 === '.') {
            ++index;
            return {
                type: Token.Punctuator,
                value: ch1,
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }

        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
    }

    // 7.8.3 Numeric Literals

    function scanHexLiteral(start) {
        var number = '';

        while (index < length) {
            if (!isHexDigit(source[index])) {
                break;
            }
            number += source[index++];
        }

        if (number.length === 0) {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        if (isIdentifierStart(source.charCodeAt(index))) {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        return {
            type: Token.NumericLiteral,
            value: parseInt('0x' + number, 16),
            lineNumber: lineNumber,
            lineStart: lineStart,
            range: [start, index]
        };
    }

    function scanBinaryLiteral(start) {
        var ch, number;

        number = '';

        while (index < length) {
            ch = source[index];
            if (ch !== '0' && ch !== '1') {
                break;
            }
            number += source[index++];
        }

        if (number.length === 0) {
            // only 0b or 0B
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        if (index < length) {
            ch = source.charCodeAt(index);
            /* istanbul ignore else */
            if (isIdentifierStart(ch) || isDecimalDigit(ch)) {
                throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
            }
        }

        return {
            type: Token.NumericLiteral,
            value: parseInt(number, 2),
            lineNumber: lineNumber,
            lineStart: lineStart,
            range: [start, index]
        };
    }

    function scanOctalLiteral(prefix, start) {
        var number, octal;

        if (isOctalDigit(prefix)) {
            octal = true;
            number = '0' + source[index++];
        } else {
            octal = false;
            ++index;
            number = '';
        }

        while (index < length) {
            if (!isOctalDigit(source[index])) {
                break;
            }
            number += source[index++];
        }

        if (!octal && number.length === 0) {
            // only 0o or 0O
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        if (isIdentifierStart(source.charCodeAt(index)) || isDecimalDigit(source.charCodeAt(index))) {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        return {
            type: Token.NumericLiteral,
            value: parseInt(number, 8),
            octal: octal,
            lineNumber: lineNumber,
            lineStart: lineStart,
            range: [start, index]
        };
    }

    function scanNumericLiteral() {
        var number, start, ch;

        ch = source[index];
        assert(isDecimalDigit(ch.charCodeAt(0)) || (ch === '.'),
            'Numeric literal must start with a decimal digit or a decimal point');

        start = index;
        number = '';
        if (ch !== '.') {
            number = source[index++];
            ch = source[index];

            // Hex number starts with '0x'.
            // Octal number starts with '0'.
            // Octal number in ES6 starts with '0o'.
            // Binary number in ES6 starts with '0b'.
            if (number === '0') {
                if (ch === 'x' || ch === 'X') {
                    ++index;
                    return scanHexLiteral(start);
                }
                if (ch === 'b' || ch === 'B') {
                    ++index;
                    return scanBinaryLiteral(start);
                }
                if (ch === 'o' || ch === 'O' || isOctalDigit(ch)) {
                    return scanOctalLiteral(ch, start);
                }
                // decimal number starts with '0' such as '09' is illegal.
                if (ch && isDecimalDigit(ch.charCodeAt(0))) {
                    throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
                }
            }

            while (isDecimalDigit(source.charCodeAt(index))) {
                number += source[index++];
            }
            ch = source[index];
        }

        if (ch === '.') {
            number += source[index++];
            while (isDecimalDigit(source.charCodeAt(index))) {
                number += source[index++];
            }
            ch = source[index];
        }

        if (ch === 'e' || ch === 'E') {
            number += source[index++];

            ch = source[index];
            if (ch === '+' || ch === '-') {
                number += source[index++];
            }
            if (isDecimalDigit(source.charCodeAt(index))) {
                while (isDecimalDigit(source.charCodeAt(index))) {
                    number += source[index++];
                }
            } else {
                throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
            }
        }

        if (isIdentifierStart(source.charCodeAt(index))) {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        return {
            type: Token.NumericLiteral,
            value: parseFloat(number),
            lineNumber: lineNumber,
            lineStart: lineStart,
            range: [start, index]
        };
    }

    // 7.8.4 String Literals

    function scanStringLiteral() {
        var str = '', quote, start, ch, code, unescaped, restore, octal = false;

        quote = source[index];
        assert((quote === '\'' || quote === '"'),
            'String literal must starts with a quote');

        start = index;
        ++index;

        while (index < length) {
            ch = source[index++];

            if (ch === quote) {
                quote = '';
                break;
            } else if (ch === '\\') {
                ch = source[index++];
                if (!ch || !isLineTerminator(ch.charCodeAt(0))) {
                    switch (ch) {
                    case 'n':
                        str += '\n';
                        break;
                    case 'r':
                        str += '\r';
                        break;
                    case 't':
                        str += '\t';
                        break;
                    case 'u':
                    case 'x':
                        if (source[index] === '{') {
                            ++index;
                            str += scanUnicodeCodePointEscape();
                        } else {
                            restore = index;
                            unescaped = scanHexEscape(ch);
                            if (unescaped) {
                                str += unescaped;
                            } else {
                                index = restore;
                                str += ch;
                            }
                        }
                        break;
                    case 'b':
                        str += '\b';
                        break;
                    case 'f':
                        str += '\f';
                        break;
                    case 'v':
                        str += '\x0B';
                        break;

                    default:
                        if (isOctalDigit(ch)) {
                            code = '01234567'.indexOf(ch);

                            // \0 is not octal escape sequence
                            if (code !== 0) {
                                octal = true;
                            }

                            /* istanbul ignore else */
                            if (index < length && isOctalDigit(source[index])) {
                                octal = true;
                                code = code * 8 + '01234567'.indexOf(source[index++]);

                                // 3 digits are only allowed when string starts
                                // with 0, 1, 2, 3
                                if ('0123'.indexOf(ch) >= 0 &&
                                        index < length &&
                                        isOctalDigit(source[index])) {
                                    code = code * 8 + '01234567'.indexOf(source[index++]);
                                }
                            }
                            str += String.fromCharCode(code);
                        } else {
                            str += ch;
                        }
                        break;
                    }
                } else {
                    ++lineNumber;
                    if (ch === '\r' && source[index] === '\n') {
                        ++index;
                    }
                    lineStart = index;
                }
            } else if (isLineTerminator(ch.charCodeAt(0))) {
                break;
            } else {
                str += ch;
            }
        }

        if (quote !== '') {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        return {
            type: Token.StringLiteral,
            value: str,
            octal: octal,
            lineNumber: lineNumber,
            lineStart: lineStart,
            range: [start, index]
        };
    }

    function scanTemplate() {
        var cooked = '', ch, start, terminated, tail, restore, unescaped, code, octal;

        terminated = false;
        tail = false;
        start = index;

        ++index;

        while (index < length) {
            ch = source[index++];
            if (ch === '`') {
                tail = true;
                terminated = true;
                break;
            } else if (ch === '$') {
                if (source[index] === '{') {
                    ++index;
                    terminated = true;
                    break;
                }
                cooked += ch;
            } else if (ch === '\\') {
                ch = source[index++];
                if (!isLineTerminator(ch.charCodeAt(0))) {
                    switch (ch) {
                    case 'n':
                        cooked += '\n';
                        break;
                    case 'r':
                        cooked += '\r';
                        break;
                    case 't':
                        cooked += '\t';
                        break;
                    case 'u':
                    case 'x':
                        if (source[index] === '{') {
                            ++index;
                            cooked += scanUnicodeCodePointEscape();
                        } else {
                            restore = index;
                            unescaped = scanHexEscape(ch);
                            if (unescaped) {
                                cooked += unescaped;
                            } else {
                                index = restore;
                                cooked += ch;
                            }
                        }
                        break;
                    case 'b':
                        cooked += '\b';
                        break;
                    case 'f':
                        cooked += '\f';
                        break;
                    case 'v':
                        cooked += '\v';
                        break;

                    default:
                        if (isOctalDigit(ch)) {
                            code = '01234567'.indexOf(ch);

                            // \0 is not octal escape sequence
                            if (code !== 0) {
                                octal = true;
                            }

                            /* istanbul ignore else */
                            if (index < length && isOctalDigit(source[index])) {
                                octal = true;
                                code = code * 8 + '01234567'.indexOf(source[index++]);

                                // 3 digits are only allowed when string starts
                                // with 0, 1, 2, 3
                                if ('0123'.indexOf(ch) >= 0 &&
                                        index < length &&
                                        isOctalDigit(source[index])) {
                                    code = code * 8 + '01234567'.indexOf(source[index++]);
                                }
                            }
                            cooked += String.fromCharCode(code);
                        } else {
                            cooked += ch;
                        }
                        break;
                    }
                } else {
                    ++lineNumber;
                    if (ch === '\r' && source[index] === '\n') {
                        ++index;
                    }
                    lineStart = index;
                }
            } else if (isLineTerminator(ch.charCodeAt(0))) {
                ++lineNumber;
                if (ch === '\r' && source[index] === '\n') {
                    ++index;
                }
                lineStart = index;
                cooked += '\n';
            } else {
                cooked += ch;
            }
        }

        if (!terminated) {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        return {
            type: Token.Template,
            value: {
                cooked: cooked,
                raw: source.slice(start + 1, index - ((tail) ? 1 : 2))
            },
            tail: tail,
            octal: octal,
            lineNumber: lineNumber,
            lineStart: lineStart,
            range: [start, index]
        };
    }

    function scanTemplateElement(option) {
        var startsWith, template;

        lookahead = null;
        skipComment();

        startsWith = (option.head) ? '`' : '}';

        if (source[index] !== startsWith) {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        template = scanTemplate();

        peek();

        return template;
    }

    function testRegExp(pattern, flags) {
        var tmp = pattern,
            value;

        if (flags.indexOf('u') >= 0) {
            // Replace each astral symbol and every Unicode code point
            // escape sequence with a single ASCII symbol to avoid throwing on
            // regular expressions that are only valid in combination with the
            // `/u` flag.
            // Note: replacing with the ASCII symbol `x` might cause false
            // negatives in unlikely scenarios. For example, `[\u{61}-b]` is a
            // perfectly valid pattern that is equivalent to `[a-b]`, but it
            // would be replaced by `[x-b]` which throws an error.
            tmp = tmp
                .replace(/\\u\{([0-9a-fA-F]+)\}/g, function ($0, $1) {
                    if (parseInt($1, 16) <= 0x10FFFF) {
                        return 'x';
                    }
                    throwError({}, Messages.InvalidRegExp);
                })
                .replace(/[\uD800-\uDBFF][\uDC00-\uDFFF]/g, 'x');
        }

        // First, detect invalid regular expressions.
        try {
            value = new RegExp(tmp);
        } catch (e) {
            throwError({}, Messages.InvalidRegExp);
        }

        // Return a regular expression object for this pattern-flag pair, or
        // `null` in case the current environment doesn't support the flags it
        // uses.
        try {
            return new RegExp(pattern, flags);
        } catch (exception) {
            return null;
        }
    }

    function scanRegExpBody() {
        var ch, str, classMarker, terminated, body;

        ch = source[index];
        assert(ch === '/', 'Regular expression literal must start with a slash');
        str = source[index++];

        classMarker = false;
        terminated = false;
        while (index < length) {
            ch = source[index++];
            str += ch;
            if (ch === '\\') {
                ch = source[index++];
                // ECMA-262 7.8.5
                if (isLineTerminator(ch.charCodeAt(0))) {
                    throwError({}, Messages.UnterminatedRegExp);
                }
                str += ch;
            } else if (isLineTerminator(ch.charCodeAt(0))) {
                throwError({}, Messages.UnterminatedRegExp);
            } else if (classMarker) {
                if (ch === ']') {
                    classMarker = false;
                }
            } else {
                if (ch === '/') {
                    terminated = true;
                    break;
                } else if (ch === '[') {
                    classMarker = true;
                }
            }
        }

        if (!terminated) {
            throwError({}, Messages.UnterminatedRegExp);
        }

        // Exclude leading and trailing slash.
        body = str.substr(1, str.length - 2);
        return {
            value: body,
            literal: str
        };
    }

    function scanRegExpFlags() {
        var ch, str, flags, restore;

        str = '';
        flags = '';
        while (index < length) {
            ch = source[index];
            if (!isIdentifierPart(ch.charCodeAt(0))) {
                break;
            }

            ++index;
            if (ch === '\\' && index < length) {
                ch = source[index];
                if (ch === 'u') {
                    ++index;
                    restore = index;
                    ch = scanHexEscape('u');
                    if (ch) {
                        flags += ch;
                        for (str += '\\u'; restore < index; ++restore) {
                            str += source[restore];
                        }
                    } else {
                        index = restore;
                        flags += 'u';
                        str += '\\u';
                    }
                    throwErrorTolerant({}, Messages.UnexpectedToken, 'ILLEGAL');
                } else {
                    str += '\\';
                    throwErrorTolerant({}, Messages.UnexpectedToken, 'ILLEGAL');
                }
            } else {
                flags += ch;
                str += ch;
            }
        }

        return {
            value: flags,
            literal: str
        };
    }

    function scanRegExp() {
        var start, body, flags, value;

        lookahead = null;
        skipComment();
        start = index;

        body = scanRegExpBody();
        flags = scanRegExpFlags();
        value = testRegExp(body.value, flags.value);

        if (extra.tokenize) {
            return {
                type: Token.RegularExpression,
                value: value,
                regex: {
                    pattern: body.value,
                    flags: flags.value
                },
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }

        return {
            literal: body.literal + flags.literal,
            value: value,
            regex: {
                pattern: body.value,
                flags: flags.value
            },
            range: [start, index]
        };
    }

    function isIdentifierName(token) {
        return token.type === Token.Identifier ||
            token.type === Token.Keyword ||
            token.type === Token.BooleanLiteral ||
            token.type === Token.NullLiteral;
    }

    function advanceSlash() {
        var prevToken,
            checkToken;
        // Using the following algorithm:
        // https://github.com/mozilla/sweet.js/wiki/design
        prevToken = extra.tokens[extra.tokens.length - 1];
        if (!prevToken) {
            // Nothing before that: it cannot be a division.
            return scanRegExp();
        }
        if (prevToken.type === 'Punctuator') {
            if (prevToken.value === ')') {
                checkToken = extra.tokens[extra.openParenToken - 1];
                if (checkToken &&
                        checkToken.type === 'Keyword' &&
                        (checkToken.value === 'if' ||
                         checkToken.value === 'while' ||
                         checkToken.value === 'for' ||
                         checkToken.value === 'with')) {
                    return scanRegExp();
                }
                return scanPunctuator();
            }
            if (prevToken.value === '}') {
                // Dividing a function by anything makes little sense,
                // but we have to check for that.
                if (extra.tokens[extra.openCurlyToken - 3] &&
                        extra.tokens[extra.openCurlyToken - 3].type === 'Keyword') {
                    // Anonymous function.
                    checkToken = extra.tokens[extra.openCurlyToken - 4];
                    if (!checkToken) {
                        return scanPunctuator();
                    }
                } else if (extra.tokens[extra.openCurlyToken - 4] &&
                        extra.tokens[extra.openCurlyToken - 4].type === 'Keyword') {
                    // Named function.
                    checkToken = extra.tokens[extra.openCurlyToken - 5];
                    if (!checkToken) {
                        return scanRegExp();
                    }
                } else {
                    return scanPunctuator();
                }
                // checkToken determines whether the function is
                // a declaration or an expression.
                if (FnExprTokens.indexOf(checkToken.value) >= 0) {
                    // It is an expression.
                    return scanPunctuator();
                }
                // It is a declaration.
                return scanRegExp();
            }
            return scanRegExp();
        }
        if (prevToken.type === 'Keyword' && prevToken.value !== 'this') {
            return scanRegExp();
        }
        return scanPunctuator();
    }

    function advance() {
        var ch;

        if (!state.inJSXChild) {
            skipComment();
        }

        if (index >= length) {
            return {
                type: Token.EOF,
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [index, index]
            };
        }

        if (state.inJSXChild) {
            return advanceJSXChild();
        }

        ch = source.charCodeAt(index);

        // Very common: ( and ) and ;
        if (ch === 40 || ch === 41 || ch === 58) {
            return scanPunctuator();
        }

        // String literal starts with single quote (#39) or double quote (#34).
        if (ch === 39 || ch === 34) {
            if (state.inJSXTag) {
                return scanJSXStringLiteral();
            }
            return scanStringLiteral();
        }

        if (state.inJSXTag && isJSXIdentifierStart(ch)) {
            return scanJSXIdentifier();
        }

        if (ch === 96) {
            return scanTemplate();
        }
        if (isIdentifierStart(ch)) {
            return scanIdentifier();
        }

        // Dot (.) char #46 can also start a floating-point number, hence the need
        // to check the next character.
        if (ch === 46) {
            if (isDecimalDigit(source.charCodeAt(index + 1))) {
                return scanNumericLiteral();
            }
            return scanPunctuator();
        }

        if (isDecimalDigit(ch)) {
            return scanNumericLiteral();
        }

        // Slash (/) char #47 can also start a regex.
        if (extra.tokenize && ch === 47) {
            return advanceSlash();
        }

        return scanPunctuator();
    }

    function lex() {
        var token;

        token = lookahead;
        index = token.range[1];
        lineNumber = token.lineNumber;
        lineStart = token.lineStart;

        lookahead = advance();

        index = token.range[1];
        lineNumber = token.lineNumber;
        lineStart = token.lineStart;

        return token;
    }

    function peek() {
        var pos, line, start;

        pos = index;
        line = lineNumber;
        start = lineStart;
        lookahead = advance();
        index = pos;
        lineNumber = line;
        lineStart = start;
    }

    function lookahead2() {
        var adv, pos, line, start, result;

        // If we are collecting the tokens, don't grab the next one yet.
        /* istanbul ignore next */
        adv = (typeof extra.advance === 'function') ? extra.advance : advance;

        pos = index;
        line = lineNumber;
        start = lineStart;

        // Scan for the next immediate token.
        /* istanbul ignore if */
        if (lookahead === null) {
            lookahead = adv();
        }
        index = lookahead.range[1];
        lineNumber = lookahead.lineNumber;
        lineStart = lookahead.lineStart;

        // Grab the token right after.
        result = adv();
        index = pos;
        lineNumber = line;
        lineStart = start;

        return result;
    }

    function rewind(token) {
        index = token.range[0];
        lineNumber = token.lineNumber;
        lineStart = token.lineStart;
        lookahead = token;
    }

    function markerCreate() {
        if (!extra.loc && !extra.range) {
            return undefined;
        }
        skipComment();
        return {offset: index, line: lineNumber, col: index - lineStart};
    }

    function markerCreatePreserveWhitespace() {
        if (!extra.loc && !extra.range) {
            return undefined;
        }
        return {offset: index, line: lineNumber, col: index - lineStart};
    }

    function processComment(node) {
        var lastChild,
            trailingComments,
            bottomRight = extra.bottomRightStack,
            last = bottomRight[bottomRight.length - 1];

        if (node.type === Syntax.Program) {
            /* istanbul ignore else */
            if (node.body.length > 0) {
                return;
            }
        }

        if (extra.trailingComments.length > 0) {
            if (extra.trailingComments[0].range[0] >= node.range[1]) {
                trailingComments = extra.trailingComments;
                extra.trailingComments = [];
            } else {
                extra.trailingComments.length = 0;
            }
        } else {
            if (last && last.trailingComments && last.trailingComments[0].range[0] >= node.range[1]) {
                trailingComments = last.trailingComments;
                delete last.trailingComments;
            }
        }

        // Eating the stack.
        if (last) {
            while (last && last.range[0] >= node.range[0]) {
                lastChild = last;
                last = bottomRight.pop();
            }
        }

        if (lastChild) {
            if (lastChild.leadingComments && lastChild.leadingComments[lastChild.leadingComments.length - 1].range[1] <= node.range[0]) {
                node.leadingComments = lastChild.leadingComments;
                delete lastChild.leadingComments;
            }
        } else if (extra.leadingComments.length > 0 && extra.leadingComments[extra.leadingComments.length - 1].range[1] <= node.range[0]) {
            node.leadingComments = extra.leadingComments;
            extra.leadingComments = [];
        }

        if (trailingComments) {
            node.trailingComments = trailingComments;
        }

        bottomRight.push(node);
    }

    function markerApply(marker, node) {
        if (extra.range) {
            node.range = [marker.offset, index];
        }
        if (extra.loc) {
            node.loc = {
                start: {
                    line: marker.line,
                    column: marker.col
                },
                end: {
                    line: lineNumber,
                    column: index - lineStart
                }
            };
            node = delegate.postProcess(node);
        }
        if (extra.attachComment) {
            processComment(node);
        }
        return node;
    }

    SyntaxTreeDelegate = {

        name: 'SyntaxTree',

        postProcess: function (node) {
            return node;
        },

        createArrayExpression: function (elements) {
            return {
                type: Syntax.ArrayExpression,
                elements: elements
            };
        },

        createAssignmentExpression: function (operator, left, right) {
            return {
                type: Syntax.AssignmentExpression,
                operator: operator,
                left: left,
                right: right
            };
        },

        createBinaryExpression: function (operator, left, right) {
            var type = (operator === '||' || operator === '&&') ? Syntax.LogicalExpression :
                        Syntax.BinaryExpression;
            return {
                type: type,
                operator: operator,
                left: left,
                right: right
            };
        },

        createBlockStatement: function (body) {
            return {
                type: Syntax.BlockStatement,
                body: body
            };
        },

        createBreakStatement: function (label) {
            return {
                type: Syntax.BreakStatement,
                label: label
            };
        },

        createCallExpression: function (callee, args) {
            return {
                type: Syntax.CallExpression,
                callee: callee,
                'arguments': args
            };
        },

        createCatchClause: function (param, body) {
            return {
                type: Syntax.CatchClause,
                param: param,
                body: body
            };
        },

        createConditionalExpression: function (test, consequent, alternate) {
            return {
                type: Syntax.ConditionalExpression,
                test: test,
                consequent: consequent,
                alternate: alternate
            };
        },

        createContinueStatement: function (label) {
            return {
                type: Syntax.ContinueStatement,
                label: label
            };
        },

        createDebuggerStatement: function () {
            return {
                type: Syntax.DebuggerStatement
            };
        },

        createDoWhileStatement: function (body, test) {
            return {
                type: Syntax.DoWhileStatement,
                body: body,
                test: test
            };
        },

        createEmptyStatement: function () {
            return {
                type: Syntax.EmptyStatement
            };
        },

        createExpressionStatement: function (expression) {
            return {
                type: Syntax.ExpressionStatement,
                expression: expression
            };
        },

        createForStatement: function (init, test, update, body) {
            return {
                type: Syntax.ForStatement,
                init: init,
                test: test,
                update: update,
                body: body
            };
        },

        createForInStatement: function (left, right, body) {
            return {
                type: Syntax.ForInStatement,
                left: left,
                right: right,
                body: body,
                each: false
            };
        },

        createForOfStatement: function (left, right, body) {
            return {
                type: Syntax.ForOfStatement,
                left: left,
                right: right,
                body: body
            };
        },

        createFunctionDeclaration: function (id, params, defaults, body, rest, generator, expression,
                                             isAsync, returnType, typeParameters) {
            var funDecl = {
                type: Syntax.FunctionDeclaration,
                id: id,
                params: params,
                defaults: defaults,
                body: body,
                rest: rest,
                generator: generator,
                expression: expression,
                returnType: returnType,
                typeParameters: typeParameters
            };

            if (isAsync) {
                funDecl.async = true;
            }

            return funDecl;
        },

        createFunctionExpression: function (id, params, defaults, body, rest, generator, expression,
                                            isAsync, returnType, typeParameters) {
            var funExpr = {
                type: Syntax.FunctionExpression,
                id: id,
                params: params,
                defaults: defaults,
                body: body,
                rest: rest,
                generator: generator,
                expression: expression,
                returnType: returnType,
                typeParameters: typeParameters
            };

            if (isAsync) {
                funExpr.async = true;
            }

            return funExpr;
        },

        createIdentifier: function (name) {
            return {
                type: Syntax.Identifier,
                name: name,
                // Only here to initialize the shape of the object to ensure
                // that the 'typeAnnotation' key is ordered before others that
                // are added later (like 'loc' and 'range'). This just helps
                // keep the shape of Identifier nodes consistent with everything
                // else.
                typeAnnotation: undefined,
                optional: undefined
            };
        },

        createTypeAnnotation: function (typeAnnotation) {
            return {
                type: Syntax.TypeAnnotation,
                typeAnnotation: typeAnnotation
            };
        },

        createTypeCast: function (expression, typeAnnotation) {
            return {
                type: Syntax.TypeCastExpression,
                expression: expression,
                typeAnnotation: typeAnnotation
            };
        },

        createFunctionTypeAnnotation: function (params, returnType, rest, typeParameters) {
            return {
                type: Syntax.FunctionTypeAnnotation,
                params: params,
                returnType: returnType,
                rest: rest,
                typeParameters: typeParameters
            };
        },

        createFunctionTypeParam: function (name, typeAnnotation, optional) {
            return {
                type: Syntax.FunctionTypeParam,
                name: name,
                typeAnnotation: typeAnnotation,
                optional: optional
            };
        },

        createNullableTypeAnnotation: function (typeAnnotation) {
            return {
                type: Syntax.NullableTypeAnnotation,
                typeAnnotation: typeAnnotation
            };
        },

        createArrayTypeAnnotation: function (elementType) {
            return {
                type: Syntax.ArrayTypeAnnotation,
                elementType: elementType
            };
        },

        createGenericTypeAnnotation: function (id, typeParameters) {
            return {
                type: Syntax.GenericTypeAnnotation,
                id: id,
                typeParameters: typeParameters
            };
        },

        createQualifiedTypeIdentifier: function (qualification, id) {
            return {
                type: Syntax.QualifiedTypeIdentifier,
                qualification: qualification,
                id: id
            };
        },

        createTypeParameterDeclaration: function (params) {
            return {
                type: Syntax.TypeParameterDeclaration,
                params: params
            };
        },

        createTypeParameterInstantiation: function (params) {
            return {
                type: Syntax.TypeParameterInstantiation,
                params: params
            };
        },

        createAnyTypeAnnotation: function () {
            return {
                type: Syntax.AnyTypeAnnotation
            };
        },

        createBooleanTypeAnnotation: function () {
            return {
                type: Syntax.BooleanTypeAnnotation
            };
        },

        createNumberTypeAnnotation: function () {
            return {
                type: Syntax.NumberTypeAnnotation
            };
        },

        createStringTypeAnnotation: function () {
            return {
                type: Syntax.StringTypeAnnotation
            };
        },

        createStringLiteralTypeAnnotation: function (token) {
            return {
                type: Syntax.StringLiteralTypeAnnotation,
                value: token.value,
                raw: source.slice(token.range[0], token.range[1])
            };
        },

        createVoidTypeAnnotation: function () {
            return {
                type: Syntax.VoidTypeAnnotation
            };
        },

        createTypeofTypeAnnotation: function (argument) {
            return {
                type: Syntax.TypeofTypeAnnotation,
                argument: argument
            };
        },

        createTupleTypeAnnotation: function (types) {
            return {
                type: Syntax.TupleTypeAnnotation,
                types: types
            };
        },

        createObjectTypeAnnotation: function (properties, indexers, callProperties) {
            return {
                type: Syntax.ObjectTypeAnnotation,
                properties: properties,
                indexers: indexers,
                callProperties: callProperties
            };
        },

        createObjectTypeIndexer: function (id, key, value, isStatic) {
            return {
                type: Syntax.ObjectTypeIndexer,
                id: id,
                key: key,
                value: value,
                static: isStatic
            };
        },

        createObjectTypeCallProperty: function (value, isStatic) {
            return {
                type: Syntax.ObjectTypeCallProperty,
                value: value,
                static: isStatic
            };
        },

        createObjectTypeProperty: function (key, value, optional, isStatic) {
            return {
                type: Syntax.ObjectTypeProperty,
                key: key,
                value: value,
                optional: optional,
                static: isStatic
            };
        },

        createUnionTypeAnnotation: function (types) {
            return {
                type: Syntax.UnionTypeAnnotation,
                types: types
            };
        },

        createIntersectionTypeAnnotation: function (types) {
            return {
                type: Syntax.IntersectionTypeAnnotation,
                types: types
            };
        },

        createTypeAlias: function (id, typeParameters, right) {
            return {
                type: Syntax.TypeAlias,
                id: id,
                typeParameters: typeParameters,
                right: right
            };
        },

        createInterface: function (id, typeParameters, body, extended) {
            return {
                type: Syntax.InterfaceDeclaration,
                id: id,
                typeParameters: typeParameters,
                body: body,
                extends: extended
            };
        },

        createInterfaceExtends: function (id, typeParameters) {
            return {
                type: Syntax.InterfaceExtends,
                id: id,
                typeParameters: typeParameters
            };
        },

        createDeclareFunction: function (id) {
            return {
                type: Syntax.DeclareFunction,
                id: id
            };
        },

        createDeclareVariable: function (id) {
            return {
                type: Syntax.DeclareVariable,
                id: id
            };
        },

        createDeclareModule: function (id, body) {
            return {
                type: Syntax.DeclareModule,
                id: id,
                body: body
            };
        },

        createJSXAttribute: function (name, value) {
            return {
                type: Syntax.JSXAttribute,
                name: name,
                value: value || null
            };
        },

        createJSXSpreadAttribute: function (argument) {
            return {
                type: Syntax.JSXSpreadAttribute,
                argument: argument
            };
        },

        createJSXIdentifier: function (name) {
            return {
                type: Syntax.JSXIdentifier,
                name: name
            };
        },

        createJSXNamespacedName: function (namespace, name) {
            return {
                type: Syntax.JSXNamespacedName,
                namespace: namespace,
                name: name
            };
        },

        createJSXMemberExpression: function (object, property) {
            return {
                type: Syntax.JSXMemberExpression,
                object: object,
                property: property
            };
        },

        createJSXElement: function (openingElement, closingElement, children) {
            return {
                type: Syntax.JSXElement,
                openingElement: openingElement,
                closingElement: closingElement,
                children: children
            };
        },

        createJSXEmptyExpression: function () {
            return {
                type: Syntax.JSXEmptyExpression
            };
        },

        createJSXExpressionContainer: function (expression) {
            return {
                type: Syntax.JSXExpressionContainer,
                expression: expression
            };
        },

        createJSXOpeningElement: function (name, attributes, selfClosing) {
            return {
                type: Syntax.JSXOpeningElement,
                name: name,
                selfClosing: selfClosing,
                attributes: attributes
            };
        },

        createJSXClosingElement: function (name) {
            return {
                type: Syntax.JSXClosingElement,
                name: name
            };
        },

        createIfStatement: function (test, consequent, alternate) {
            return {
                type: Syntax.IfStatement,
                test: test,
                consequent: consequent,
                alternate: alternate
            };
        },

        createLabeledStatement: function (label, body) {
            return {
                type: Syntax.LabeledStatement,
                label: label,
                body: body
            };
        },

        createLiteral: function (token) {
            var object = {
                type: Syntax.Literal,
                value: token.value,
                raw: source.slice(token.range[0], token.range[1])
            };
            if (token.regex) {
                object.regex = token.regex;
            }
            return object;
        },

        createMemberExpression: function (accessor, object, property) {
            return {
                type: Syntax.MemberExpression,
                computed: accessor === '[',
                object: object,
                property: property
            };
        },

        createNewExpression: function (callee, args) {
            return {
                type: Syntax.NewExpression,
                callee: callee,
                'arguments': args
            };
        },

        createObjectExpression: function (properties) {
            return {
                type: Syntax.ObjectExpression,
                properties: properties
            };
        },

        createPostfixExpression: function (operator, argument) {
            return {
                type: Syntax.UpdateExpression,
                operator: operator,
                argument: argument,
                prefix: false
            };
        },

        createProgram: function (body) {
            return {
                type: Syntax.Program,
                body: body
            };
        },

        createProperty: function (kind, key, value, method, shorthand, computed) {
            return {
                type: Syntax.Property,
                key: key,
                value: value,
                kind: kind,
                method: method,
                shorthand: shorthand,
                computed: computed
            };
        },

        createReturnStatement: function (argument) {
            return {
                type: Syntax.ReturnStatement,
                argument: argument
            };
        },

        createSequenceExpression: function (expressions) {
            return {
                type: Syntax.SequenceExpression,
                expressions: expressions
            };
        },

        createSwitchCase: function (test, consequent) {
            return {
                type: Syntax.SwitchCase,
                test: test,
                consequent: consequent
            };
        },

        createSwitchStatement: function (discriminant, cases) {
            return {
                type: Syntax.SwitchStatement,
                discriminant: discriminant,
                cases: cases
            };
        },

        createThisExpression: function () {
            return {
                type: Syntax.ThisExpression
            };
        },

        createThrowStatement: function (argument) {
            return {
                type: Syntax.ThrowStatement,
                argument: argument
            };
        },

        createTryStatement: function (block, guardedHandlers, handlers, finalizer) {
            return {
                type: Syntax.TryStatement,
                block: block,
                guardedHandlers: guardedHandlers,
                handlers: handlers,
                finalizer: finalizer
            };
        },

        createUnaryExpression: function (operator, argument) {
            if (operator === '++' || operator === '--') {
                return {
                    type: Syntax.UpdateExpression,
                    operator: operator,
                    argument: argument,
                    prefix: true
                };
            }
            return {
                type: Syntax.UnaryExpression,
                operator: operator,
                argument: argument,
                prefix: true
            };
        },

        createVariableDeclaration: function (declarations, kind) {
            return {
                type: Syntax.VariableDeclaration,
                declarations: declarations,
                kind: kind
            };
        },

        createVariableDeclarator: function (id, init) {
            return {
                type: Syntax.VariableDeclarator,
                id: id,
                init: init
            };
        },

        createWhileStatement: function (test, body) {
            return {
                type: Syntax.WhileStatement,
                test: test,
                body: body
            };
        },

        createWithStatement: function (object, body) {
            return {
                type: Syntax.WithStatement,
                object: object,
                body: body
            };
        },

        createTemplateElement: function (value, tail) {
            return {
                type: Syntax.TemplateElement,
                value: value,
                tail: tail
            };
        },

        createTemplateLiteral: function (quasis, expressions) {
            return {
                type: Syntax.TemplateLiteral,
                quasis: quasis,
                expressions: expressions
            };
        },

        createSpreadElement: function (argument) {
            return {
                type: Syntax.SpreadElement,
                argument: argument
            };
        },

        createSpreadProperty: function (argument) {
            return {
                type: Syntax.SpreadProperty,
                argument: argument
            };
        },

        createTaggedTemplateExpression: function (tag, quasi) {
            return {
                type: Syntax.TaggedTemplateExpression,
                tag: tag,
                quasi: quasi
            };
        },

        createArrowFunctionExpression: function (params, defaults, body, rest, expression, isAsync) {
            var arrowExpr = {
                type: Syntax.ArrowFunctionExpression,
                id: null,
                params: params,
                defaults: defaults,
                body: body,
                rest: rest,
                generator: false,
                expression: expression
            };

            if (isAsync) {
                arrowExpr.async = true;
            }

            return arrowExpr;
        },

        createMethodDefinition: function (propertyType, kind, key, value, computed) {
            return {
                type: Syntax.MethodDefinition,
                key: key,
                value: value,
                kind: kind,
                'static': propertyType === ClassPropertyType.static,
                computed: computed
            };
        },

        createClassProperty: function (key, typeAnnotation, computed, isStatic) {
            return {
                type: Syntax.ClassProperty,
                key: key,
                typeAnnotation: typeAnnotation,
                computed: computed,
                static: isStatic
            };
        },

        createClassBody: function (body) {
            return {
                type: Syntax.ClassBody,
                body: body
            };
        },

        createClassImplements: function (id, typeParameters) {
            return {
                type: Syntax.ClassImplements,
                id: id,
                typeParameters: typeParameters
            };
        },

        createClassExpression: function (id, superClass, body, typeParameters, superTypeParameters, implemented) {
            return {
                type: Syntax.ClassExpression,
                id: id,
                superClass: superClass,
                body: body,
                typeParameters: typeParameters,
                superTypeParameters: superTypeParameters,
                implements: implemented
            };
        },

        createClassDeclaration: function (id, superClass, body, typeParameters, superTypeParameters, implemented) {
            return {
                type: Syntax.ClassDeclaration,
                id: id,
                superClass: superClass,
                body: body,
                typeParameters: typeParameters,
                superTypeParameters: superTypeParameters,
                implements: implemented
            };
        },

        createModuleSpecifier: function (token) {
            return {
                type: Syntax.ModuleSpecifier,
                value: token.value,
                raw: source.slice(token.range[0], token.range[1])
            };
        },

        createExportSpecifier: function (id, name) {
            return {
                type: Syntax.ExportSpecifier,
                id: id,
                name: name
            };
        },

        createExportBatchSpecifier: function () {
            return {
                type: Syntax.ExportBatchSpecifier
            };
        },

        createImportDefaultSpecifier: function (id) {
            return {
                type: Syntax.ImportDefaultSpecifier,
                id: id
            };
        },

        createImportNamespaceSpecifier: function (id) {
            return {
                type: Syntax.ImportNamespaceSpecifier,
                id: id
            };
        },

        createExportDeclaration: function (isDefault, declaration, specifiers, src) {
            return {
                type: Syntax.ExportDeclaration,
                'default': !!isDefault,
                declaration: declaration,
                specifiers: specifiers,
                source: src
            };
        },

        createImportSpecifier: function (id, name) {
            return {
                type: Syntax.ImportSpecifier,
                id: id,
                name: name
            };
        },

        createImportDeclaration: function (specifiers, src, isType) {
            return {
                type: Syntax.ImportDeclaration,
                specifiers: specifiers,
                source: src,
                isType: isType
            };
        },

        createYieldExpression: function (argument, dlg) {
            return {
                type: Syntax.YieldExpression,
                argument: argument,
                delegate: dlg
            };
        },

        createAwaitExpression: function (argument) {
            return {
                type: Syntax.AwaitExpression,
                argument: argument
            };
        },

        createComprehensionExpression: function (filter, blocks, body) {
            return {
                type: Syntax.ComprehensionExpression,
                filter: filter,
                blocks: blocks,
                body: body
            };
        }

    };

    // Return true if there is a line terminator before the next token.

    function peekLineTerminator() {
        var pos, line, start, found;

        pos = index;
        line = lineNumber;
        start = lineStart;
        skipComment();
        found = lineNumber !== line;
        index = pos;
        lineNumber = line;
        lineStart = start;

        return found;
    }

    // Throw an exception

    function throwError(token, messageFormat) {
        var error,
            args = Array.prototype.slice.call(arguments, 2),
            msg = messageFormat.replace(
                /%(\d)/g,
                function (whole, idx) {
                    assert(idx < args.length, 'Message reference must be in range');
                    return args[idx];
                }
            );

        if (typeof token.lineNumber === 'number') {
            error = new Error('Line ' + token.lineNumber + ': ' + msg);
            error.index = token.range[0];
            error.lineNumber = token.lineNumber;
            error.column = token.range[0] - lineStart + 1;
        } else {
            error = new Error('Line ' + lineNumber + ': ' + msg);
            error.index = index;
            error.lineNumber = lineNumber;
            error.column = index - lineStart + 1;
        }

        error.description = msg;
        throw error;
    }

    function throwErrorTolerant() {
        try {
            throwError.apply(null, arguments);
        } catch (e) {
            if (extra.errors) {
                extra.errors.push(e);
            } else {
                throw e;
            }
        }
    }


    // Throw an exception because of the token.

    function throwUnexpected(token) {
        if (token.type === Token.EOF) {
            throwError(token, Messages.UnexpectedEOS);
        }

        if (token.type === Token.NumericLiteral) {
            throwError(token, Messages.UnexpectedNumber);
        }

        if (token.type === Token.StringLiteral || token.type === Token.JSXText) {
            throwError(token, Messages.UnexpectedString);
        }

        if (token.type === Token.Identifier) {
            throwError(token, Messages.UnexpectedIdentifier);
        }

        if (token.type === Token.Keyword) {
            if (isFutureReservedWord(token.value)) {
                throwError(token, Messages.UnexpectedReserved);
            } else if (strict && isStrictModeReservedWord(token.value)) {
                throwErrorTolerant(token, Messages.StrictReservedWord);
                return;
            }
            throwError(token, Messages.UnexpectedToken, token.value);
        }

        if (token.type === Token.Template) {
            throwError(token, Messages.UnexpectedTemplate, token.value.raw);
        }

        // BooleanLiteral, NullLiteral, or Punctuator.
        throwError(token, Messages.UnexpectedToken, token.value);
    }

    // Expect the next token to match the specified punctuator.
    // If not, an exception will be thrown.

    function expect(value) {
        var token = lex();
        if (token.type !== Token.Punctuator || token.value !== value) {
            throwUnexpected(token);
        }
    }

    // Expect the next token to match the specified keyword.
    // If not, an exception will be thrown.

    function expectKeyword(keyword, contextual) {
        var token = lex();
        if (token.type !== (contextual ? Token.Identifier : Token.Keyword) ||
                token.value !== keyword) {
            throwUnexpected(token);
        }
    }

    // Expect the next token to match the specified contextual keyword.
    // If not, an exception will be thrown.

    function expectContextualKeyword(keyword) {
        return expectKeyword(keyword, true);
    }

    // Return true if the next token matches the specified punctuator.

    function match(value) {
        return lookahead.type === Token.Punctuator && lookahead.value === value;
    }

    // Return true if the next token matches the specified keyword

    function matchKeyword(keyword, contextual) {
        var expectedType = contextual ? Token.Identifier : Token.Keyword;
        return lookahead.type === expectedType && lookahead.value === keyword;
    }

    // Return true if the next token matches the specified contextual keyword

    function matchContextualKeyword(keyword) {
        return matchKeyword(keyword, true);
    }

    // Return true if the next token is an assignment operator

    function matchAssign() {
        var op;

        if (lookahead.type !== Token.Punctuator) {
            return false;
        }
        op = lookahead.value;
        return op === '=' ||
            op === '*=' ||
            op === '/=' ||
            op === '%=' ||
            op === '+=' ||
            op === '-=' ||
            op === '<<=' ||
            op === '>>=' ||
            op === '>>>=' ||
            op === '&=' ||
            op === '^=' ||
            op === '|=';
    }

    // Note that 'yield' is treated as a keyword in strict mode, but a
    // contextual keyword (identifier) in non-strict mode, so we need to
    // use matchKeyword('yield', false) and matchKeyword('yield', true)
    // (i.e. matchContextualKeyword) appropriately.
    function matchYield() {
        return state.yieldAllowed && matchKeyword('yield', !strict);
    }

    function matchAsync() {
        var backtrackToken = lookahead, matches = false;

        if (matchContextualKeyword('async')) {
            lex(); // Make sure peekLineTerminator() starts after 'async'.
            matches = !peekLineTerminator();
            rewind(backtrackToken); // Revert the lex().
        }

        return matches;
    }

    function matchAwait() {
        return state.awaitAllowed && matchContextualKeyword('await');
    }

    function consumeSemicolon() {
        var line, oldIndex = index, oldLineNumber = lineNumber,
            oldLineStart = lineStart, oldLookahead = lookahead;

        // Catch the very common case first: immediately a semicolon (char #59).
        if (source.charCodeAt(index) === 59) {
            lex();
            return;
        }

        line = lineNumber;
        skipComment();
        if (lineNumber !== line) {
            index = oldIndex;
            lineNumber = oldLineNumber;
            lineStart = oldLineStart;
            lookahead = oldLookahead;
            return;
        }

        if (match(';')) {
            lex();
            return;
        }

        if (lookahead.type !== Token.EOF && !match('}')) {
            throwUnexpected(lookahead);
        }
    }

    // Return true if provided expression is LeftHandSideExpression

    function isLeftHandSide(expr) {
        return expr.type === Syntax.Identifier || expr.type === Syntax.MemberExpression;
    }

    function isAssignableLeftHandSide(expr) {
        return isLeftHandSide(expr) || expr.type === Syntax.ObjectPattern || expr.type === Syntax.ArrayPattern;
    }

    // 11.1.4 Array Initialiser

    function parseArrayInitialiser() {
        var elements = [], blocks = [], filter = null, tmp, possiblecomprehension = true,
            marker = markerCreate();

        expect('[');
        while (!match(']')) {
            if (lookahead.value === 'for' &&
                    lookahead.type === Token.Keyword) {
                if (!possiblecomprehension) {
                    throwError({}, Messages.ComprehensionError);
                }
                matchKeyword('for');
                tmp = parseForStatement({ignoreBody: true});
                tmp.of = tmp.type === Syntax.ForOfStatement;
                tmp.type = Syntax.ComprehensionBlock;
                if (tmp.left.kind) { // can't be let or const
                    throwError({}, Messages.ComprehensionError);
                }
                blocks.push(tmp);
            } else if (lookahead.value === 'if' &&
                           lookahead.type === Token.Keyword) {
                if (!possiblecomprehension) {
                    throwError({}, Messages.ComprehensionError);
                }
                expectKeyword('if');
                expect('(');
                filter = parseExpression();
                expect(')');
            } else if (lookahead.value === ',' &&
                           lookahead.type === Token.Punctuator) {
                possiblecomprehension = false; // no longer allowed.
                lex();
                elements.push(null);
            } else {
                tmp = parseSpreadOrAssignmentExpression();
                elements.push(tmp);
                if (tmp && tmp.type === Syntax.SpreadElement) {
                    if (!match(']')) {
                        throwError({}, Messages.ElementAfterSpreadElement);
                    }
                } else if (!(match(']') || matchKeyword('for') || matchKeyword('if'))) {
                    expect(','); // this lexes.
                    possiblecomprehension = false;
                }
            }
        }

        expect(']');

        if (filter && !blocks.length) {
            throwError({}, Messages.ComprehensionRequiresBlock);
        }

        if (blocks.length) {
            if (elements.length !== 1) {
                throwError({}, Messages.ComprehensionError);
            }
            return markerApply(marker, delegate.createComprehensionExpression(filter, blocks, elements[0]));
        }
        return markerApply(marker, delegate.createArrayExpression(elements));
    }

    // 11.1.5 Object Initialiser

    function parsePropertyFunction(options) {
        var previousStrict, previousYieldAllowed, previousAwaitAllowed,
            params, defaults, body, marker = markerCreate();

        previousStrict = strict;
        previousYieldAllowed = state.yieldAllowed;
        state.yieldAllowed = options.generator;
        previousAwaitAllowed = state.awaitAllowed;
        state.awaitAllowed = options.async;
        params = options.params || [];
        defaults = options.defaults || [];

        body = parseConciseBody();
        if (options.name && strict && isRestrictedWord(params[0].name)) {
            throwErrorTolerant(options.name, Messages.StrictParamName);
        }
        strict = previousStrict;
        state.yieldAllowed = previousYieldAllowed;
        state.awaitAllowed = previousAwaitAllowed;

        return markerApply(marker, delegate.createFunctionExpression(
            null,
            params,
            defaults,
            body,
            options.rest || null,
            options.generator,
            body.type !== Syntax.BlockStatement,
            options.async,
            options.returnType,
            options.typeParameters
        ));
    }


    function parsePropertyMethodFunction(options) {
        var previousStrict, tmp, method;

        previousStrict = strict;
        strict = true;

        tmp = parseParams();

        if (tmp.stricted) {
            throwErrorTolerant(tmp.stricted, tmp.message);
        }

        method = parsePropertyFunction({
            params: tmp.params,
            defaults: tmp.defaults,
            rest: tmp.rest,
            generator: options.generator,
            async: options.async,
            returnType: tmp.returnType,
            typeParameters: options.typeParameters
        });

        strict = previousStrict;

        return method;
    }


    function parseObjectPropertyKey() {
        var marker = markerCreate(),
            token = lex(),
            propertyKey,
            result;

        // Note: This function is called only from parseObjectProperty(), where
        // EOF and Punctuator tokens are already filtered out.

        if (token.type === Token.StringLiteral || token.type === Token.NumericLiteral) {
            if (strict && token.octal) {
                throwErrorTolerant(token, Messages.StrictOctalLiteral);
            }
            return markerApply(marker, delegate.createLiteral(token));
        }

        if (token.type === Token.Punctuator && token.value === '[') {
            // For computed properties we should skip the [ and ], and
            // capture in marker only the assignment expression itself.
            marker = markerCreate();
            propertyKey = parseAssignmentExpression();
            result = markerApply(marker, propertyKey);
            expect(']');
            return result;
        }

        return markerApply(marker, delegate.createIdentifier(token.value));
    }

    function parseObjectProperty() {
        var token, key, id, param, computed,
            marker = markerCreate(), returnType, typeParameters;

        token = lookahead;
        computed = (token.value === '[' && token.type === Token.Punctuator);

        if (token.type === Token.Identifier || computed || matchAsync()) {
            id = parseObjectPropertyKey();

            if (match(':')) {
                lex();

                return markerApply(
                    marker,
                    delegate.createProperty(
                        'init',
                        id,
                        parseAssignmentExpression(),
                        false,
                        false,
                        computed
                    )
                );
            }

            if (match('(') || match('<')) {
                if (match('<')) {
                    typeParameters = parseTypeParameterDeclaration();
                }
                return markerApply(
                    marker,
                    delegate.createProperty(
                        'init',
                        id,
                        parsePropertyMethodFunction({
                            generator: false,
                            async: false,
                            typeParameters: typeParameters
                        }),
                        true,
                        false,
                        computed
                    )
                );
            }

            // Property Assignment: Getter and Setter.

            if (token.value === 'get') {
                computed = (lookahead.value === '[');
                key = parseObjectPropertyKey();

                expect('(');
                expect(')');
                if (match(':')) {
                    returnType = parseTypeAnnotation();
                }

                return markerApply(
                    marker,
                    delegate.createProperty(
                        'get',
                        key,
                        parsePropertyFunction({
                            generator: false,
                            async: false,
                            returnType: returnType
                        }),
                        false,
                        false,
                        computed
                    )
                );
            }

            if (token.value === 'set') {
                computed = (lookahead.value === '[');
                key = parseObjectPropertyKey();

                expect('(');
                token = lookahead;
                param = [ parseTypeAnnotatableIdentifier() ];
                expect(')');
                if (match(':')) {
                    returnType = parseTypeAnnotation();
                }

                return markerApply(
                    marker,
                    delegate.createProperty(
                        'set',
                        key,
                        parsePropertyFunction({
                            params: param,
                            generator: false,
                            async: false,
                            name: token,
                            returnType: returnType
                        }),
                        false,
                        false,
                        computed
                    )
                );
            }

            if (token.value === 'async') {
                computed = (lookahead.value === '[');
                key = parseObjectPropertyKey();

                if (match('<')) {
                    typeParameters = parseTypeParameterDeclaration();
                }

                return markerApply(
                    marker,
                    delegate.createProperty(
                        'init',
                        key,
                        parsePropertyMethodFunction({
                            generator: false,
                            async: true,
                            typeParameters: typeParameters
                        }),
                        true,
                        false,
                        computed
                    )
                );
            }

            if (computed) {
                // Computed properties can only be used with full notation.
                throwUnexpected(lookahead);
            }

            return markerApply(
                marker,
                delegate.createProperty('init', id, id, false, true, false)
            );
        }

        if (token.type === Token.EOF || token.type === Token.Punctuator) {
            if (!match('*')) {
                throwUnexpected(token);
            }
            lex();

            computed = (lookahead.type === Token.Punctuator && lookahead.value === '[');

            id = parseObjectPropertyKey();

            if (match('<')) {
                typeParameters = parseTypeParameterDeclaration();
            }

            if (!match('(')) {
                throwUnexpected(lex());
            }

            return markerApply(marker, delegate.createProperty(
                'init',
                id,
                parsePropertyMethodFunction({
                    generator: true,
                    typeParameters: typeParameters
                }),
                true,
                false,
                computed
            ));
        }
        key = parseObjectPropertyKey();
        if (match(':')) {
            lex();
            return markerApply(marker, delegate.createProperty('init', key, parseAssignmentExpression(), false, false, false));
        }
        if (match('(') || match('<')) {
            if (match('<')) {
                typeParameters = parseTypeParameterDeclaration();
            }
            return markerApply(marker, delegate.createProperty(
                'init',
                key,
                parsePropertyMethodFunction({
                    generator: false,
                    typeParameters: typeParameters
                }),
                true,
                false,
                false
            ));
        }
        throwUnexpected(lex());
    }

    function parseObjectSpreadProperty() {
        var marker = markerCreate();
        expect('...');
        return markerApply(marker, delegate.createSpreadProperty(parseAssignmentExpression()));
    }

    function getFieldName(key) {
        var toString = String;
        if (key.type === Syntax.Identifier) {
            return key.name;
        }
        return toString(key.value);
    }

    function parseObjectInitialiser() {
        var properties = [], property, name, kind, storedKind, map = new StringMap(),
            marker = markerCreate(), toString = String;

        expect('{');

        while (!match('}')) {
            if (match('...')) {
                property = parseObjectSpreadProperty();
            } else {
                property = parseObjectProperty();

                if (property.key.type === Syntax.Identifier) {
                    name = property.key.name;
                } else {
                    name = toString(property.key.value);
                }
                kind = (property.kind === 'init') ? PropertyKind.Data : (property.kind === 'get') ? PropertyKind.Get : PropertyKind.Set;

                if (map.has(name)) {
                    storedKind = map.get(name);
                    if (storedKind === PropertyKind.Data) {
                        if (strict && kind === PropertyKind.Data) {
                            throwErrorTolerant({}, Messages.StrictDuplicateProperty);
                        } else if (kind !== PropertyKind.Data) {
                            throwErrorTolerant({}, Messages.AccessorDataProperty);
                        }
                    } else {
                        if (kind === PropertyKind.Data) {
                            throwErrorTolerant({}, Messages.AccessorDataProperty);
                        } else if (storedKind & kind) {
                            throwErrorTolerant({}, Messages.AccessorGetSet);
                        }
                    }
                    map.set(name, storedKind | kind);
                } else {
                    map.set(name, kind);
                }
            }

            properties.push(property);

            if (!match('}')) {
                expect(',');
            }
        }

        expect('}');

        return markerApply(marker, delegate.createObjectExpression(properties));
    }

    function parseTemplateElement(option) {
        var marker = markerCreate(),
            token = scanTemplateElement(option);
        if (strict && token.octal) {
            throwError(token, Messages.StrictOctalLiteral);
        }
        return markerApply(marker, delegate.createTemplateElement({ raw: token.value.raw, cooked: token.value.cooked }, token.tail));
    }

    function parseTemplateLiteral() {
        var quasi, quasis, expressions, marker = markerCreate();

        quasi = parseTemplateElement({ head: true });
        quasis = [ quasi ];
        expressions = [];

        while (!quasi.tail) {
            expressions.push(parseExpression());
            quasi = parseTemplateElement({ head: false });
            quasis.push(quasi);
        }

        return markerApply(marker, delegate.createTemplateLiteral(quasis, expressions));
    }

    // 11.1.6 The Grouping Operator

    function parseGroupExpression() {
        var expr, marker, typeAnnotation;

        expect('(');

        ++state.parenthesizedCount;

        marker = markerCreate();

        expr = parseExpression();

        if (match(':')) {
            typeAnnotation = parseTypeAnnotation();
            expr = markerApply(marker, delegate.createTypeCast(
                expr,
                typeAnnotation
            ));
        }

        expect(')');

        return expr;
    }

    function matchAsyncFuncExprOrDecl() {
        var token;

        if (matchAsync()) {
            token = lookahead2();
            if (token.type === Token.Keyword && token.value === 'function') {
                return true;
            }
        }

        return false;
    }

    // 11.1 Primary Expressions

    function parsePrimaryExpression() {
        var marker, type, token, expr;

        type = lookahead.type;

        if (type === Token.Identifier) {
            marker = markerCreate();
            return markerApply(marker, delegate.createIdentifier(lex().value));
        }

        if (type === Token.StringLiteral || type === Token.NumericLiteral) {
            if (strict && lookahead.octal) {
                throwErrorTolerant(lookahead, Messages.StrictOctalLiteral);
            }
            marker = markerCreate();
            return markerApply(marker, delegate.createLiteral(lex()));
        }

        if (type === Token.Keyword) {
            if (matchKeyword('this')) {
                marker = markerCreate();
                lex();
                return markerApply(marker, delegate.createThisExpression());
            }

            if (matchKeyword('function')) {
                return parseFunctionExpression();
            }

            if (matchKeyword('class')) {
                return parseClassExpression();
            }

            if (matchKeyword('super')) {
                marker = markerCreate();
                lex();
                return markerApply(marker, delegate.createIdentifier('super'));
            }
        }

        if (type === Token.BooleanLiteral) {
            marker = markerCreate();
            token = lex();
            token.value = (token.value === 'true');
            return markerApply(marker, delegate.createLiteral(token));
        }

        if (type === Token.NullLiteral) {
            marker = markerCreate();
            token = lex();
            token.value = null;
            return markerApply(marker, delegate.createLiteral(token));
        }

        if (match('[')) {
            return parseArrayInitialiser();
        }

        if (match('{')) {
            return parseObjectInitialiser();
        }

        if (match('(')) {
            return parseGroupExpression();
        }

        if (match('/') || match('/=')) {
            marker = markerCreate();
            expr = delegate.createLiteral(scanRegExp());
            peek();
            return markerApply(marker, expr);
        }

        if (type === Token.Template) {
            return parseTemplateLiteral();
        }

        if (match('<')) {
            return parseJSXElement();
        }

        throwUnexpected(lex());
    }

    // 11.2 Left-Hand-Side Expressions

    function parseArguments() {
        var args = [], arg;

        expect('(');

        if (!match(')')) {
            while (index < length) {
                arg = parseSpreadOrAssignmentExpression();
                args.push(arg);

                if (match(')')) {
                    break;
                } else if (arg.type === Syntax.SpreadElement) {
                    throwError({}, Messages.ElementAfterSpreadElement);
                }

                expect(',');
            }
        }

        expect(')');

        return args;
    }

    function parseSpreadOrAssignmentExpression() {
        if (match('...')) {
            var marker = markerCreate();
            lex();
            return markerApply(marker, delegate.createSpreadElement(parseAssignmentExpression()));
        }
        return parseAssignmentExpression();
    }

    function parseNonComputedProperty() {
        var marker = markerCreate(),
            token = lex();

        if (!isIdentifierName(token)) {
            throwUnexpected(token);
        }

        return markerApply(marker, delegate.createIdentifier(token.value));
    }

    function parseNonComputedMember() {
        expect('.');

        return parseNonComputedProperty();
    }

    function parseComputedMember() {
        var expr;

        expect('[');

        expr = parseExpression();

        expect(']');

        return expr;
    }

    function parseNewExpression() {
        var callee, args, marker = markerCreate();

        expectKeyword('new');
        callee = parseLeftHandSideExpression();
        args = match('(') ? parseArguments() : [];

        return markerApply(marker, delegate.createNewExpression(callee, args));
    }

    function parseLeftHandSideExpressionAllowCall() {
        var expr, args, marker = markerCreate();

        expr = matchKeyword('new') ? parseNewExpression() : parsePrimaryExpression();

        while (match('.') || match('[') || match('(') || lookahead.type === Token.Template) {
            if (match('(')) {
                args = parseArguments();
                expr = markerApply(marker, delegate.createCallExpression(expr, args));
            } else if (match('[')) {
                expr = markerApply(marker, delegate.createMemberExpression('[', expr, parseComputedMember()));
            } else if (match('.')) {
                expr = markerApply(marker, delegate.createMemberExpression('.', expr, parseNonComputedMember()));
            } else {
                expr = markerApply(marker, delegate.createTaggedTemplateExpression(expr, parseTemplateLiteral()));
            }
        }

        return expr;
    }

    function parseLeftHandSideExpression() {
        var expr, marker = markerCreate();

        expr = matchKeyword('new') ? parseNewExpression() : parsePrimaryExpression();

        while (match('.') || match('[') || lookahead.type === Token.Template) {
            if (match('[')) {
                expr = markerApply(marker, delegate.createMemberExpression('[', expr, parseComputedMember()));
            } else if (match('.')) {
                expr = markerApply(marker, delegate.createMemberExpression('.', expr, parseNonComputedMember()));
            } else {
                expr = markerApply(marker, delegate.createTaggedTemplateExpression(expr, parseTemplateLiteral()));
            }
        }

        return expr;
    }

    // 11.3 Postfix Expressions

    function parsePostfixExpression() {
        var marker = markerCreate(),
            expr = parseLeftHandSideExpressionAllowCall(),
            token;

        if (lookahead.type !== Token.Punctuator) {
            return expr;
        }

        if ((match('++') || match('--')) && !peekLineTerminator()) {
            // 11.3.1, 11.3.2
            if (strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)) {
                throwErrorTolerant({}, Messages.StrictLHSPostfix);
            }

            if (!isLeftHandSide(expr)) {
                throwError({}, Messages.InvalidLHSInAssignment);
            }

            token = lex();
            expr = markerApply(marker, delegate.createPostfixExpression(token.value, expr));
        }

        return expr;
    }

    // 11.4 Unary Operators

    function parseUnaryExpression() {
        var marker, token, expr;

        if (lookahead.type !== Token.Punctuator && lookahead.type !== Token.Keyword) {
            return parsePostfixExpression();
        }

        if (match('++') || match('--')) {
            marker = markerCreate();
            token = lex();
            expr = parseUnaryExpression();
            // 11.4.4, 11.4.5
            if (strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)) {
                throwErrorTolerant({}, Messages.StrictLHSPrefix);
            }

            if (!isLeftHandSide(expr)) {
                throwError({}, Messages.InvalidLHSInAssignment);
            }

            return markerApply(marker, delegate.createUnaryExpression(token.value, expr));
        }

        if (match('+') || match('-') || match('~') || match('!')) {
            marker = markerCreate();
            token = lex();
            expr = parseUnaryExpression();
            return markerApply(marker, delegate.createUnaryExpression(token.value, expr));
        }

        if (matchKeyword('delete') || matchKeyword('void') || matchKeyword('typeof')) {
            marker = markerCreate();
            token = lex();
            expr = parseUnaryExpression();
            expr = markerApply(marker, delegate.createUnaryExpression(token.value, expr));
            if (strict && expr.operator === 'delete' && expr.argument.type === Syntax.Identifier) {
                throwErrorTolerant({}, Messages.StrictDelete);
            }
            return expr;
        }

        return parsePostfixExpression();
    }

    function binaryPrecedence(token, allowIn) {
        var prec = 0;

        if (token.type !== Token.Punctuator && token.type !== Token.Keyword) {
            return 0;
        }

        switch (token.value) {
        case '||':
            prec = 1;
            break;

        case '&&':
            prec = 2;
            break;

        case '|':
            prec = 3;
            break;

        case '^':
            prec = 4;
            break;

        case '&':
            prec = 5;
            break;

        case '==':
        case '!=':
        case '===':
        case '!==':
            prec = 6;
            break;

        case '<':
        case '>':
        case '<=':
        case '>=':
        case 'instanceof':
            prec = 7;
            break;

        case 'in':
            prec = allowIn ? 7 : 0;
            break;

        case '<<':
        case '>>':
        case '>>>':
            prec = 8;
            break;

        case '+':
        case '-':
            prec = 9;
            break;

        case '*':
        case '/':
        case '%':
            prec = 11;
            break;

        default:
            break;
        }

        return prec;
    }

    // 11.5 Multiplicative Operators
    // 11.6 Additive Operators
    // 11.7 Bitwise Shift Operators
    // 11.8 Relational Operators
    // 11.9 Equality Operators
    // 11.10 Binary Bitwise Operators
    // 11.11 Binary Logical Operators

    function parseBinaryExpression() {
        var expr, token, prec, previousAllowIn, stack, right, operator, left, i,
            marker, markers;

        previousAllowIn = state.allowIn;
        state.allowIn = true;

        marker = markerCreate();
        left = parseUnaryExpression();

        token = lookahead;
        prec = binaryPrecedence(token, previousAllowIn);
        if (prec === 0) {
            return left;
        }
        token.prec = prec;
        lex();

        markers = [marker, markerCreate()];
        right = parseUnaryExpression();

        stack = [left, token, right];

        while ((prec = binaryPrecedence(lookahead, previousAllowIn)) > 0) {

            // Reduce: make a binary expression from the three topmost entries.
            while ((stack.length > 2) && (prec <= stack[stack.length - 2].prec)) {
                right = stack.pop();
                operator = stack.pop().value;
                left = stack.pop();
                expr = delegate.createBinaryExpression(operator, left, right);
                markers.pop();
                marker = markers.pop();
                markerApply(marker, expr);
                stack.push(expr);
                markers.push(marker);
            }

            // Shift.
            token = lex();
            token.prec = prec;
            stack.push(token);
            markers.push(markerCreate());
            expr = parseUnaryExpression();
            stack.push(expr);
        }

        state.allowIn = previousAllowIn;

        // Final reduce to clean-up the stack.
        i = stack.length - 1;
        expr = stack[i];
        markers.pop();
        while (i > 1) {
            expr = delegate.createBinaryExpression(stack[i - 1].value, stack[i - 2], expr);
            i -= 2;
            marker = markers.pop();
            markerApply(marker, expr);
        }

        return expr;
    }


    // 11.12 Conditional Operator

    function parseConditionalExpression() {
        var expr, previousAllowIn, consequent, alternate, marker = markerCreate();
        expr = parseBinaryExpression();

        if (match('?')) {
            lex();
            previousAllowIn = state.allowIn;
            state.allowIn = true;
            consequent = parseAssignmentExpression();
            state.allowIn = previousAllowIn;
            expect(':');
            alternate = parseAssignmentExpression();

            expr = markerApply(marker, delegate.createConditionalExpression(expr, consequent, alternate));
        }

        return expr;
    }

    // 11.13 Assignment Operators

    // 12.14.5 AssignmentPattern

    function reinterpretAsAssignmentBindingPattern(expr) {
        var i, len, property, element;

        if (expr.type === Syntax.ObjectExpression) {
            expr.type = Syntax.ObjectPattern;
            for (i = 0, len = expr.properties.length; i < len; i += 1) {
                property = expr.properties[i];
                if (property.type === Syntax.SpreadProperty) {
                    if (i < len - 1) {
                        throwError({}, Messages.PropertyAfterSpreadProperty);
                    }
                    reinterpretAsAssignmentBindingPattern(property.argument);
                } else {
                    if (property.kind !== 'init') {
                        throwError({}, Messages.InvalidLHSInAssignment);
                    }
                    reinterpretAsAssignmentBindingPattern(property.value);
                }
            }
        } else if (expr.type === Syntax.ArrayExpression) {
            expr.type = Syntax.ArrayPattern;
            for (i = 0, len = expr.elements.length; i < len; i += 1) {
                element = expr.elements[i];
                /* istanbul ignore else */
                if (element) {
                    reinterpretAsAssignmentBindingPattern(element);
                }
            }
        } else if (expr.type === Syntax.Identifier) {
            if (isRestrictedWord(expr.name)) {
                throwError({}, Messages.InvalidLHSInAssignment);
            }
        } else if (expr.type === Syntax.SpreadElement) {
            reinterpretAsAssignmentBindingPattern(expr.argument);
            if (expr.argument.type === Syntax.ObjectPattern) {
                throwError({}, Messages.ObjectPatternAsSpread);
            }
        } else {
            /* istanbul ignore else */
            if (expr.type !== Syntax.MemberExpression && expr.type !== Syntax.CallExpression && expr.type !== Syntax.NewExpression) {
                throwError({}, Messages.InvalidLHSInAssignment);
            }
        }
    }

    // 13.2.3 BindingPattern

    function reinterpretAsDestructuredParameter(options, expr) {
        var i, len, property, element;

        if (expr.type === Syntax.ObjectExpression) {
            expr.type = Syntax.ObjectPattern;
            for (i = 0, len = expr.properties.length; i < len; i += 1) {
                property = expr.properties[i];
                if (property.type === Syntax.SpreadProperty) {
                    if (i < len - 1) {
                        throwError({}, Messages.PropertyAfterSpreadProperty);
                    }
                    reinterpretAsDestructuredParameter(options, property.argument);
                } else {
                    if (property.kind !== 'init') {
                        throwError({}, Messages.InvalidLHSInFormalsList);
                    }
                    reinterpretAsDestructuredParameter(options, property.value);
                }
            }
        } else if (expr.type === Syntax.ArrayExpression) {
            expr.type = Syntax.ArrayPattern;
            for (i = 0, len = expr.elements.length; i < len; i += 1) {
                element = expr.elements[i];
                if (element) {
                    reinterpretAsDestructuredParameter(options, element);
                }
            }
        } else if (expr.type === Syntax.Identifier) {
            validateParam(options, expr, expr.name);
        } else if (expr.type === Syntax.SpreadElement) {
            // BindingRestElement only allows BindingIdentifier
            if (expr.argument.type !== Syntax.Identifier) {
                throwError({}, Messages.InvalidLHSInFormalsList);
            }
            validateParam(options, expr.argument, expr.argument.name);
        } else {
            throwError({}, Messages.InvalidLHSInFormalsList);
        }
    }

    function reinterpretAsCoverFormalsList(expressions) {
        var i, len, param, params, defaults, defaultCount, options, rest;

        params = [];
        defaults = [];
        defaultCount = 0;
        rest = null;
        options = {
            paramSet: new StringMap()
        };

        for (i = 0, len = expressions.length; i < len; i += 1) {
            param = expressions[i];
            if (param.type === Syntax.Identifier) {
                params.push(param);
                defaults.push(null);
                validateParam(options, param, param.name);
            } else if (param.type === Syntax.ObjectExpression || param.type === Syntax.ArrayExpression) {
                reinterpretAsDestructuredParameter(options, param);
                params.push(param);
                defaults.push(null);
            } else if (param.type === Syntax.SpreadElement) {
                assert(i === len - 1, 'It is guaranteed that SpreadElement is last element by parseExpression');
                if (param.argument.type !== Syntax.Identifier) {
                    throwError({}, Messages.InvalidLHSInFormalsList);
                }
                reinterpretAsDestructuredParameter(options, param.argument);
                rest = param.argument;
            } else if (param.type === Syntax.AssignmentExpression) {
                params.push(param.left);
                defaults.push(param.right);
                ++defaultCount;
                validateParam(options, param.left, param.left.name);
            } else {
                return null;
            }
        }

        if (options.message === Messages.StrictParamDupe) {
            throwError(
                strict ? options.stricted : options.firstRestricted,
                options.message
            );
        }

        if (defaultCount === 0) {
            defaults = [];
        }

        return {
            params: params,
            defaults: defaults,
            rest: rest,
            stricted: options.stricted,
            firstRestricted: options.firstRestricted,
            message: options.message
        };
    }

    function parseArrowFunctionExpression(options, marker) {
        var previousStrict, previousYieldAllowed, previousAwaitAllowed, body;

        expect('=>');

        previousStrict = strict;
        previousYieldAllowed = state.yieldAllowed;
        state.yieldAllowed = false;
        previousAwaitAllowed = state.awaitAllowed;
        state.awaitAllowed = !!options.async;
        body = parseConciseBody();

        if (strict && options.firstRestricted) {
            throwError(options.firstRestricted, options.message);
        }
        if (strict && options.stricted) {
            throwErrorTolerant(options.stricted, options.message);
        }

        strict = previousStrict;
        state.yieldAllowed = previousYieldAllowed;
        state.awaitAllowed = previousAwaitAllowed;

        return markerApply(marker, delegate.createArrowFunctionExpression(
            options.params,
            options.defaults,
            body,
            options.rest,
            body.type !== Syntax.BlockStatement,
            !!options.async
        ));
    }

    function parseAssignmentExpression() {
        var marker, expr, token, params, oldParenthesizedCount,
            startsWithParen = false, backtrackToken = lookahead,
            possiblyAsync = false;

        if (matchYield()) {
            return parseYieldExpression();
        }

        if (matchAwait()) {
            return parseAwaitExpression();
        }

        oldParenthesizedCount = state.parenthesizedCount;

        marker = markerCreate();

        if (matchAsyncFuncExprOrDecl()) {
            return parseFunctionExpression();
        }

        if (matchAsync()) {
            // We can't be completely sure that this 'async' token is
            // actually a contextual keyword modifying a function
            // expression, so we might have to un-lex() it later by
            // calling rewind(backtrackToken).
            possiblyAsync = true;
            lex();
        }

        if (match('(')) {
            token = lookahead2();
            if ((token.type === Token.Punctuator && token.value === ')') || token.value === '...') {
                params = parseParams();
                if (!match('=>')) {
                    throwUnexpected(lex());
                }
                params.async = possiblyAsync;
                return parseArrowFunctionExpression(params, marker);
            }
            startsWithParen = true;
        }

        token = lookahead;

        // If the 'async' keyword is not followed by a '(' character or an
        // identifier, then it can't be an arrow function modifier, and we
        // should interpret it as a normal identifer.
        if (possiblyAsync && !match('(') && token.type !== Token.Identifier) {
            possiblyAsync = false;
            rewind(backtrackToken);
        }

        expr = parseConditionalExpression();

        if (match('=>') &&
                (state.parenthesizedCount === oldParenthesizedCount ||
                state.parenthesizedCount === (oldParenthesizedCount + 1))) {
            if (expr.type === Syntax.Identifier) {
                params = reinterpretAsCoverFormalsList([ expr ]);
            } else if (expr.type === Syntax.AssignmentExpression ||
                    expr.type === Syntax.ArrayExpression ||
                    expr.type === Syntax.ObjectExpression) {
                if (!startsWithParen) {
                    throwUnexpected(lex());
                }
                params = reinterpretAsCoverFormalsList([ expr ]);
            } else if (expr.type === Syntax.SequenceExpression) {
                params = reinterpretAsCoverFormalsList(expr.expressions);
            }
            if (params) {
                params.async = possiblyAsync;
                return parseArrowFunctionExpression(params, marker);
            }
        }

        // If we haven't returned by now, then the 'async' keyword was not
        // a function modifier, and we should rewind and interpret it as a
        // normal identifier.
        if (possiblyAsync) {
            possiblyAsync = false;
            rewind(backtrackToken);
            expr = parseConditionalExpression();
        }

        if (matchAssign()) {
            // 11.13.1
            if (strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)) {
                throwErrorTolerant(token, Messages.StrictLHSAssignment);
            }

            // ES.next draf 11.13 Runtime Semantics step 1
            if (match('=') && (expr.type === Syntax.ObjectExpression || expr.type === Syntax.ArrayExpression)) {
                reinterpretAsAssignmentBindingPattern(expr);
            } else if (!isLeftHandSide(expr)) {
                throwError({}, Messages.InvalidLHSInAssignment);
            }

            expr = markerApply(marker, delegate.createAssignmentExpression(lex().value, expr, parseAssignmentExpression()));
        }

        return expr;
    }

    // 11.14 Comma Operator

    function parseExpression() {
        var marker, expr, expressions, sequence, spreadFound;

        marker = markerCreate();
        expr = parseAssignmentExpression();
        expressions = [ expr ];

        if (match(',')) {
            while (index < length) {
                if (!match(',')) {
                    break;
                }

                lex();
                expr = parseSpreadOrAssignmentExpression();
                expressions.push(expr);

                if (expr.type === Syntax.SpreadElement) {
                    spreadFound = true;
                    if (!match(')')) {
                        throwError({}, Messages.ElementAfterSpreadElement);
                    }
                    break;
                }
            }

            sequence = markerApply(marker, delegate.createSequenceExpression(expressions));
        }

        if (spreadFound && lookahead2().value !== '=>') {
            throwError({}, Messages.IllegalSpread);
        }

        return sequence || expr;
    }

    // 12.1 Block

    function parseStatementList() {
        var list = [],
            statement;

        while (index < length) {
            if (match('}')) {
                break;
            }
            statement = parseSourceElement();
            if (typeof statement === 'undefined') {
                break;
            }
            list.push(statement);
        }

        return list;
    }

    function parseBlock() {
        var block, marker = markerCreate();

        expect('{');

        block = parseStatementList();

        expect('}');

        return markerApply(marker, delegate.createBlockStatement(block));
    }

    // 12.2 Variable Statement

    function parseTypeParameterDeclaration() {
        var marker = markerCreate(), paramTypes = [];

        expect('<');
        while (!match('>')) {
            paramTypes.push(parseVariableIdentifier());
            if (!match('>')) {
                expect(',');
            }
        }
        expect('>');

        return markerApply(marker, delegate.createTypeParameterDeclaration(
            paramTypes
        ));
    }

    function parseTypeParameterInstantiation() {
        var marker = markerCreate(), oldInType = state.inType, paramTypes = [];

        state.inType = true;

        expect('<');
        while (!match('>')) {
            paramTypes.push(parseType());
            if (!match('>')) {
                expect(',');
            }
        }
        expect('>');

        state.inType = oldInType;

        return markerApply(marker, delegate.createTypeParameterInstantiation(
            paramTypes
        ));
    }

    function parseObjectTypeIndexer(marker, isStatic) {
        var id, key, value;

        expect('[');
        id = parseObjectPropertyKey();
        expect(':');
        key = parseType();
        expect(']');
        expect(':');
        value = parseType();

        return markerApply(marker, delegate.createObjectTypeIndexer(
            id,
            key,
            value,
            isStatic
        ));
    }

    function parseObjectTypeMethodish(marker) {
        var params = [], rest = null, returnType, typeParameters = null;
        if (match('<')) {
            typeParameters = parseTypeParameterDeclaration();
        }

        expect('(');
        while (lookahead.type === Token.Identifier) {
            params.push(parseFunctionTypeParam());
            if (!match(')')) {
                expect(',');
            }
        }

        if (match('...')) {
            lex();
            rest = parseFunctionTypeParam();
        }
        expect(')');
        expect(':');
        returnType = parseType();

        return markerApply(marker, delegate.createFunctionTypeAnnotation(
            params,
            returnType,
            rest,
            typeParameters
        ));
    }

    function parseObjectTypeMethod(marker, isStatic, key) {
        var optional = false, value;
        value = parseObjectTypeMethodish(marker);

        return markerApply(marker, delegate.createObjectTypeProperty(
            key,
            value,
            optional,
            isStatic
        ));
    }

    function parseObjectTypeCallProperty(marker, isStatic) {
        var valueMarker = markerCreate();
        return markerApply(marker, delegate.createObjectTypeCallProperty(
            parseObjectTypeMethodish(valueMarker),
            isStatic
        ));
    }

    function parseObjectType(allowStatic) {
        var callProperties = [], indexers = [], marker, optional = false,
            properties = [], propertyKey, propertyTypeAnnotation,
            token, isStatic, matchStatic;

        expect('{');

        while (!match('}')) {
            marker = markerCreate();
            matchStatic =
                   strict
                   ? matchKeyword('static')
                   : matchContextualKeyword('static');

            if (allowStatic && matchStatic) {
                token = lex();
                isStatic = true;
            }

            if (match('[')) {
                indexers.push(parseObjectTypeIndexer(marker, isStatic));
            } else if (match('(') || match('<')) {
                callProperties.push(parseObjectTypeCallProperty(marker, allowStatic));
            } else {
                if (isStatic && match(':')) {
                    propertyKey = markerApply(marker, delegate.createIdentifier(token));
                    throwErrorTolerant(token, Messages.StrictReservedWord);
                } else {
                    propertyKey = parseObjectPropertyKey();
                }
                if (match('<') || match('(')) {
                    // This is a method property
                    properties.push(parseObjectTypeMethod(marker, isStatic, propertyKey));
                } else {
                    if (match('?')) {
                        lex();
                        optional = true;
                    }
                    expect(':');
                    propertyTypeAnnotation = parseType();
                    properties.push(markerApply(marker, delegate.createObjectTypeProperty(
                        propertyKey,
                        propertyTypeAnnotation,
                        optional,
                        isStatic
                    )));
                }
            }

            if (match(';')) {
                lex();
            } else if (!match('}')) {
                throwUnexpected(lookahead);
            }
        }

        expect('}');

        return delegate.createObjectTypeAnnotation(
            properties,
            indexers,
            callProperties
        );
    }

    function parseGenericType() {
        var marker = markerCreate(),
            typeParameters = null, typeIdentifier;

        typeIdentifier = parseVariableIdentifier();

        while (match('.')) {
            expect('.');
            typeIdentifier = markerApply(marker, delegate.createQualifiedTypeIdentifier(
                typeIdentifier,
                parseVariableIdentifier()
            ));
        }

        if (match('<')) {
            typeParameters = parseTypeParameterInstantiation();
        }

        return markerApply(marker, delegate.createGenericTypeAnnotation(
            typeIdentifier,
            typeParameters
        ));
    }

    function parseVoidType() {
        var marker = markerCreate();
        expectKeyword('void');
        return markerApply(marker, delegate.createVoidTypeAnnotation());
    }

    function parseTypeofType() {
        var argument, marker = markerCreate();
        expectKeyword('typeof');
        argument = parsePrimaryType();
        return markerApply(marker, delegate.createTypeofTypeAnnotation(
            argument
        ));
    }

    function parseTupleType() {
        var marker = markerCreate(), types = [];
        expect('[');
        // We allow trailing commas
        while (index < length && !match(']')) {
            types.push(parseType());
            if (match(']')) {
                break;
            }
            expect(',');
        }
        expect(']');
        return markerApply(marker, delegate.createTupleTypeAnnotation(
            types
        ));
    }

    function parseFunctionTypeParam() {
        var marker = markerCreate(), name, optional = false, typeAnnotation;
        name = parseVariableIdentifier();
        if (match('?')) {
            lex();
            optional = true;
        }
        expect(':');
        typeAnnotation = parseType();
        return markerApply(marker, delegate.createFunctionTypeParam(
            name,
            typeAnnotation,
            optional
        ));
    }

    function parseFunctionTypeParams() {
        var ret = { params: [], rest: null };
        while (lookahead.type === Token.Identifier) {
            ret.params.push(parseFunctionTypeParam());
            if (!match(')')) {
                expect(',');
            }
        }

        if (match('...')) {
            lex();
            ret.rest = parseFunctionTypeParam();
        }
        return ret;
    }

    // The parsing of types roughly parallels the parsing of expressions, and
    // primary types are kind of like primary expressions...they're the
    // primitives with which other types are constructed.
    function parsePrimaryType() {
        var params = null, returnType = null,
            marker = markerCreate(), rest = null, tmp,
            typeParameters, token, type, isGroupedType = false;

        switch (lookahead.type) {
        case Token.Identifier:
            switch (lookahead.value) {
            case 'any':
                lex();
                return markerApply(marker, delegate.createAnyTypeAnnotation());
            case 'bool':  // fallthrough
            case 'boolean':
                lex();
                return markerApply(marker, delegate.createBooleanTypeAnnotation());
            case 'number':
                lex();
                return markerApply(marker, delegate.createNumberTypeAnnotation());
            case 'string':
                lex();
                return markerApply(marker, delegate.createStringTypeAnnotation());
            }
            return markerApply(marker, parseGenericType());
        case Token.Punctuator:
            switch (lookahead.value) {
            case '{':
                return markerApply(marker, parseObjectType());
            case '[':
                return parseTupleType();
            case '<':
                typeParameters = parseTypeParameterDeclaration();
                expect('(');
                tmp = parseFunctionTypeParams();
                params = tmp.params;
                rest = tmp.rest;
                expect(')');

                expect('=>');

                returnType = parseType();

                return markerApply(marker, delegate.createFunctionTypeAnnotation(
                    params,
                    returnType,
                    rest,
                    typeParameters
                ));
            case '(':
                lex();
                // Check to see if this is actually a grouped type
                if (!match(')') && !match('...')) {
                    if (lookahead.type === Token.Identifier) {
                        token = lookahead2();
                        isGroupedType = token.value !== '?' && token.value !== ':';
                    } else {
                        isGroupedType = true;
                    }
                }

                if (isGroupedType) {
                    type = parseType();
                    expect(')');

                    // If we see a => next then someone was probably confused about
                    // function types, so we can provide a better error message
                    if (match('=>')) {
                        throwError({}, Messages.ConfusedAboutFunctionType);
                    }

                    return type;
                }

                tmp = parseFunctionTypeParams();
                params = tmp.params;
                rest = tmp.rest;

                expect(')');

                expect('=>');

                returnType = parseType();

                return markerApply(marker, delegate.createFunctionTypeAnnotation(
                    params,
                    returnType,
                    rest,
                    null /* typeParameters */
                ));
            }
            break;
        case Token.Keyword:
            switch (lookahead.value) {
            case 'void':
                return markerApply(marker, parseVoidType());
            case 'typeof':
                return markerApply(marker, parseTypeofType());
            }
            break;
        case Token.StringLiteral:
            token = lex();
            if (token.octal) {
                throwError(token, Messages.StrictOctalLiteral);
            }
            return markerApply(marker, delegate.createStringLiteralTypeAnnotation(
                token
            ));
        }

        throwUnexpected(lookahead);
    }

    function parsePostfixType() {
        var marker = markerCreate(), t = parsePrimaryType();
        if (match('[')) {
            expect('[');
            expect(']');
            return markerApply(marker, delegate.createArrayTypeAnnotation(t));
        }
        return t;
    }

    function parsePrefixType() {
        var marker = markerCreate();
        if (match('?')) {
            lex();
            return markerApply(marker, delegate.createNullableTypeAnnotation(
                parsePrefixType()
            ));
        }
        return parsePostfixType();
    }


    function parseIntersectionType() {
        var marker = markerCreate(), type, types;
        type = parsePrefixType();
        types = [type];
        while (match('&')) {
            lex();
            types.push(parsePrefixType());
        }

        return types.length === 1 ?
                type :
                markerApply(marker, delegate.createIntersectionTypeAnnotation(
                    types
                ));
    }

    function parseUnionType() {
        var marker = markerCreate(), type, types;
        type = parseIntersectionType();
        types = [type];
        while (match('|')) {
            lex();
            types.push(parseIntersectionType());
        }
        return types.length === 1 ?
                type :
                markerApply(marker, delegate.createUnionTypeAnnotation(
                    types
                ));
    }

    function parseType() {
        var oldInType = state.inType, type;
        state.inType = true;

        type = parseUnionType();

        state.inType = oldInType;
        return type;
    }

    function parseTypeAnnotation() {
        var marker = markerCreate(), type;

        expect(':');
        type = parseType();

        return markerApply(marker, delegate.createTypeAnnotation(type));
    }

    function parseVariableIdentifier() {
        var marker = markerCreate(),
            token = lex();

        if (token.type !== Token.Identifier) {
            throwUnexpected(token);
        }

        return markerApply(marker, delegate.createIdentifier(token.value));
    }

    function parseTypeAnnotatableIdentifier(requireTypeAnnotation, canBeOptionalParam) {
        var marker = markerCreate(),
            ident = parseVariableIdentifier(),
            isOptionalParam = false;

        if (canBeOptionalParam && match('?')) {
            expect('?');
            isOptionalParam = true;
        }

        if (requireTypeAnnotation || match(':')) {
            ident.typeAnnotation = parseTypeAnnotation();
            ident = markerApply(marker, ident);
        }

        if (isOptionalParam) {
            ident.optional = true;
            ident = markerApply(marker, ident);
        }

        return ident;
    }

    function parseVariableDeclaration(kind) {
        var id,
            marker = markerCreate(),
            init = null,
            typeAnnotationMarker = markerCreate();
        if (match('{')) {
            id = parseObjectInitialiser();
            reinterpretAsAssignmentBindingPattern(id);
            if (match(':')) {
                id.typeAnnotation = parseTypeAnnotation();
                markerApply(typeAnnotationMarker, id);
            }
        } else if (match('[')) {
            id = parseArrayInitialiser();
            reinterpretAsAssignmentBindingPattern(id);
            if (match(':')) {
                id.typeAnnotation = parseTypeAnnotation();
                markerApply(typeAnnotationMarker, id);
            }
        } else {
            /* istanbul ignore next */
            id = state.allowKeyword ? parseNonComputedProperty() : parseTypeAnnotatableIdentifier();
            // 12.2.1
            if (strict && isRestrictedWord(id.name)) {
                throwErrorTolerant({}, Messages.StrictVarName);
            }
        }

        if (kind === 'const') {
            if (!match('=')) {
                throwError({}, Messages.NoUninitializedConst);
            }
            expect('=');
            init = parseAssignmentExpression();
        } else if (match('=')) {
            lex();
            init = parseAssignmentExpression();
        }

        return markerApply(marker, delegate.createVariableDeclarator(id, init));
    }

    function parseVariableDeclarationList(kind) {
        var list = [];

        do {
            list.push(parseVariableDeclaration(kind));
            if (!match(',')) {
                break;
            }
            lex();
        } while (index < length);

        return list;
    }

    function parseVariableStatement() {
        var declarations, marker = markerCreate();

        expectKeyword('var');

        declarations = parseVariableDeclarationList();

        consumeSemicolon();

        return markerApply(marker, delegate.createVariableDeclaration(declarations, 'var'));
    }

    // kind may be `const` or `let`
    // Both are experimental and not in the specification yet.
    // see http://wiki.ecmascript.org/doku.php?id=harmony:const
    // and http://wiki.ecmascript.org/doku.php?id=harmony:let
    function parseConstLetDeclaration(kind) {
        var declarations, marker = markerCreate();

        expectKeyword(kind);

        declarations = parseVariableDeclarationList(kind);

        consumeSemicolon();

        return markerApply(marker, delegate.createVariableDeclaration(declarations, kind));
    }

    // people.mozilla.org/~jorendorff/es6-draft.html

    function parseModuleSpecifier() {
        var marker = markerCreate(),
            specifier;

        if (lookahead.type !== Token.StringLiteral) {
            throwError({}, Messages.InvalidModuleSpecifier);
        }
        specifier = delegate.createModuleSpecifier(lookahead);
        lex();
        return markerApply(marker, specifier);
    }

    function parseExportBatchSpecifier() {
        var marker = markerCreate();
        expect('*');
        return markerApply(marker, delegate.createExportBatchSpecifier());
    }

    function parseExportSpecifier() {
        var id, name = null, marker = markerCreate(), from;
        if (matchKeyword('default')) {
            lex();
            id = markerApply(marker, delegate.createIdentifier('default'));
            // export {default} from "something";
        } else {
            id = parseVariableIdentifier();
        }
        if (matchContextualKeyword('as')) {
            lex();
            name = parseNonComputedProperty();
        }

        return markerApply(marker, delegate.createExportSpecifier(id, name));
    }

    function parseExportDeclaration() {
        var declaration = null,
            possibleIdentifierToken, sourceElement,
            isExportFromIdentifier,
            src = null, specifiers = [],
            marker = markerCreate();

        expectKeyword('export');

        if (matchKeyword('default')) {
            // covers:
            // export default ...
            lex();
            if (matchKeyword('function') || matchKeyword('class')) {
                possibleIdentifierToken = lookahead2();
                if (isIdentifierName(possibleIdentifierToken)) {
                    // covers:
                    // export default function foo () {}
                    // export default class foo {}
                    sourceElement = parseSourceElement();
                    return markerApply(marker, delegate.createExportDeclaration(true, sourceElement, [sourceElement.id], null));
                }
                // covers:
                // export default function () {}
                // export default class {}
                switch (lookahead.value) {
                case 'class':
                    return markerApply(marker, delegate.createExportDeclaration(true, parseClassExpression(), [], null));
                case 'function':
                    return markerApply(marker, delegate.createExportDeclaration(true, parseFunctionExpression(), [], null));
                }
            }

            if (matchContextualKeyword('from')) {
                throwError({}, Messages.UnexpectedToken, lookahead.value);
            }

            // covers:
            // export default {};
            // export default [];
            if (match('{')) {
                declaration = parseObjectInitialiser();
            } else if (match('[')) {
                declaration = parseArrayInitialiser();
            } else {
                declaration = parseAssignmentExpression();
            }
            consumeSemicolon();
            return markerApply(marker, delegate.createExportDeclaration(true, declaration, [], null));
        }

        // non-default export
        if (lookahead.type === Token.Keyword || matchContextualKeyword('type')) {
            // covers:
            // export var f = 1;
            switch (lookahead.value) {
            case 'type':
            case 'let':
            case 'const':
            case 'var':
            case 'class':
            case 'function':
                return markerApply(marker, delegate.createExportDeclaration(false, parseSourceElement(), specifiers, null));
            }
        }

        if (match('*')) {
            // covers:
            // export * from "foo";
            specifiers.push(parseExportBatchSpecifier());

            if (!matchContextualKeyword('from')) {
                throwError({}, lookahead.value ?
                        Messages.UnexpectedToken : Messages.MissingFromClause, lookahead.value);
            }
            lex();
            src = parseModuleSpecifier();
            consumeSemicolon();

            return markerApply(marker, delegate.createExportDeclaration(false, null, specifiers, src));
        }

        expect('{');
        if (!match('}')) {
            do {
                isExportFromIdentifier = isExportFromIdentifier || matchKeyword('default');
                specifiers.push(parseExportSpecifier());
            } while (match(',') && lex());
        }
        expect('}');

        if (matchContextualKeyword('from')) {
            // covering:
            // export {default} from "foo";
            // export {foo} from "foo";
            lex();
            src = parseModuleSpecifier();
            consumeSemicolon();
        } else if (isExportFromIdentifier) {
            // covering:
            // export {default}; // missing fromClause
            throwError({}, lookahead.value ?
                    Messages.UnexpectedToken : Messages.MissingFromClause, lookahead.value);
        } else {
            // cover
            // export {foo};
            consumeSemicolon();
        }
        return markerApply(marker, delegate.createExportDeclaration(false, declaration, specifiers, src));
    }


    function parseImportSpecifier() {
        // import {<foo as bar>} ...;
        var id, name = null, marker = markerCreate();

        id = parseNonComputedProperty();
        if (matchContextualKeyword('as')) {
            lex();
            name = parseVariableIdentifier();
        }

        return markerApply(marker, delegate.createImportSpecifier(id, name));
    }

    function parseNamedImports() {
        var specifiers = [];
        // {foo, bar as bas}
        expect('{');
        if (!match('}')) {
            do {
                specifiers.push(parseImportSpecifier());
            } while (match(',') && lex());
        }
        expect('}');
        return specifiers;
    }

    function parseImportDefaultSpecifier() {
        // import <foo> ...;
        var id, marker = markerCreate();

        id = parseNonComputedProperty();

        return markerApply(marker, delegate.createImportDefaultSpecifier(id));
    }

    function parseImportNamespaceSpecifier() {
        // import <* as foo> ...;
        var id, marker = markerCreate();

        expect('*');
        if (!matchContextualKeyword('as')) {
            throwError({}, Messages.NoAsAfterImportNamespace);
        }
        lex();
        id = parseNonComputedProperty();

        return markerApply(marker, delegate.createImportNamespaceSpecifier(id));
    }

    function parseImportDeclaration() {
        var specifiers, src, marker = markerCreate(), isType = false, token2;

        expectKeyword('import');

        if (matchContextualKeyword('type')) {
            token2 = lookahead2();
            if ((token2.type === Token.Identifier && token2.value !== 'from') ||
                    (token2.type === Token.Punctuator &&
                        (token2.value === '{' || token2.value === '*'))) {
                isType = true;
                lex();
            }
        }

        specifiers = [];

        if (lookahead.type === Token.StringLiteral) {
            // covers:
            // import "foo";
            src = parseModuleSpecifier();
            consumeSemicolon();
            return markerApply(marker, delegate.createImportDeclaration(specifiers, src, isType));
        }

        if (!matchKeyword('default') && isIdentifierName(lookahead)) {
            // covers:
            // import foo
            // import foo, ...
            specifiers.push(parseImportDefaultSpecifier());
            if (match(',')) {
                lex();
            }
        }
        if (match('*')) {
            // covers:
            // import foo, * as foo
            // import * as foo
            specifiers.push(parseImportNamespaceSpecifier());
        } else if (match('{')) {
            // covers:
            // import foo, {bar}
            // import {bar}
            specifiers = specifiers.concat(parseNamedImports());
        }

        if (!matchContextualKeyword('from')) {
            throwError({}, lookahead.value ?
                    Messages.UnexpectedToken : Messages.MissingFromClause, lookahead.value);
        }
        lex();
        src = parseModuleSpecifier();
        consumeSemicolon();

        return markerApply(marker, delegate.createImportDeclaration(specifiers, src, isType));
    }

    // 12.3 Empty Statement

    function parseEmptyStatement() {
        var marker = markerCreate();
        expect(';');
        return markerApply(marker, delegate.createEmptyStatement());
    }

    // 12.4 Expression Statement

    function parseExpressionStatement() {
        var marker = markerCreate(), expr = parseExpression();
        consumeSemicolon();
        return markerApply(marker, delegate.createExpressionStatement(expr));
    }

    // 12.5 If statement

    function parseIfStatement() {
        var test, consequent, alternate, marker = markerCreate();

        expectKeyword('if');

        expect('(');

        test = parseExpression();

        expect(')');

        consequent = parseStatement();

        if (matchKeyword('else')) {
            lex();
            alternate = parseStatement();
        } else {
            alternate = null;
        }

        return markerApply(marker, delegate.createIfStatement(test, consequent, alternate));
    }

    // 12.6 Iteration Statements

    function parseDoWhileStatement() {
        var body, test, oldInIteration, marker = markerCreate();

        expectKeyword('do');

        oldInIteration = state.inIteration;
        state.inIteration = true;

        body = parseStatement();

        state.inIteration = oldInIteration;

        expectKeyword('while');

        expect('(');

        test = parseExpression();

        expect(')');

        if (match(';')) {
            lex();
        }

        return markerApply(marker, delegate.createDoWhileStatement(body, test));
    }

    function parseWhileStatement() {
        var test, body, oldInIteration, marker = markerCreate();

        expectKeyword('while');

        expect('(');

        test = parseExpression();

        expect(')');

        oldInIteration = state.inIteration;
        state.inIteration = true;

        body = parseStatement();

        state.inIteration = oldInIteration;

        return markerApply(marker, delegate.createWhileStatement(test, body));
    }

    function parseForVariableDeclaration() {
        var marker = markerCreate(),
            token = lex(),
            declarations = parseVariableDeclarationList();

        return markerApply(marker, delegate.createVariableDeclaration(declarations, token.value));
    }

    function parseForStatement(opts) {
        var init, test, update, left, right, body, operator, oldInIteration,
            marker = markerCreate();
        init = test = update = null;
        expectKeyword('for');

        // http://wiki.ecmascript.org/doku.php?id=proposals:iterators_and_generators&s=each
        if (matchContextualKeyword('each')) {
            throwError({}, Messages.EachNotAllowed);
        }

        expect('(');

        if (match(';')) {
            lex();
        } else {
            if (matchKeyword('var') || matchKeyword('let') || matchKeyword('const')) {
                state.allowIn = false;
                init = parseForVariableDeclaration();
                state.allowIn = true;

                if (init.declarations.length === 1) {
                    if (matchKeyword('in') || matchContextualKeyword('of')) {
                        operator = lookahead;
                        if (!((operator.value === 'in' || init.kind !== 'var') && init.declarations[0].init)) {
                            lex();
                            left = init;
                            right = parseExpression();
                            init = null;
                        }
                    }
                }
            } else {
                state.allowIn = false;
                init = parseExpression();
                state.allowIn = true;

                if (matchContextualKeyword('of')) {
                    operator = lex();
                    left = init;
                    right = parseExpression();
                    init = null;
                } else if (matchKeyword('in')) {
                    // LeftHandSideExpression
                    if (!isAssignableLeftHandSide(init)) {
                        throwError({}, Messages.InvalidLHSInForIn);
                    }
                    operator = lex();
                    left = init;
                    right = parseExpression();
                    init = null;
                }
            }

            if (typeof left === 'undefined') {
                expect(';');
            }
        }

        if (typeof left === 'undefined') {

            if (!match(';')) {
                test = parseExpression();
            }
            expect(';');

            if (!match(')')) {
                update = parseExpression();
            }
        }

        expect(')');

        oldInIteration = state.inIteration;
        state.inIteration = true;

        if (!(opts !== undefined && opts.ignoreBody)) {
            body = parseStatement();
        }

        state.inIteration = oldInIteration;

        if (typeof left === 'undefined') {
            return markerApply(marker, delegate.createForStatement(init, test, update, body));
        }

        if (operator.value === 'in') {
            return markerApply(marker, delegate.createForInStatement(left, right, body));
        }
        return markerApply(marker, delegate.createForOfStatement(left, right, body));
    }

    // 12.7 The continue statement

    function parseContinueStatement() {
        var label = null, marker = markerCreate();

        expectKeyword('continue');

        // Optimize the most common form: 'continue;'.
        if (source.charCodeAt(index) === 59) {
            lex();

            if (!state.inIteration) {
                throwError({}, Messages.IllegalContinue);
            }

            return markerApply(marker, delegate.createContinueStatement(null));
        }

        if (peekLineTerminator()) {
            if (!state.inIteration) {
                throwError({}, Messages.IllegalContinue);
            }

            return markerApply(marker, delegate.createContinueStatement(null));
        }

        if (lookahead.type === Token.Identifier) {
            label = parseVariableIdentifier();

            if (!state.labelSet.has(label.name)) {
                throwError({}, Messages.UnknownLabel, label.name);
            }
        }

        consumeSemicolon();

        if (label === null && !state.inIteration) {
            throwError({}, Messages.IllegalContinue);
        }

        return markerApply(marker, delegate.createContinueStatement(label));
    }

    // 12.8 The break statement

    function parseBreakStatement() {
        var label = null, marker = markerCreate();

        expectKeyword('break');

        // Catch the very common case first: immediately a semicolon (char #59).
        if (source.charCodeAt(index) === 59) {
            lex();

            if (!(state.inIteration || state.inSwitch)) {
                throwError({}, Messages.IllegalBreak);
            }

            return markerApply(marker, delegate.createBreakStatement(null));
        }

        if (peekLineTerminator()) {
            if (!(state.inIteration || state.inSwitch)) {
                throwError({}, Messages.IllegalBreak);
            }

            return markerApply(marker, delegate.createBreakStatement(null));
        }

        if (lookahead.type === Token.Identifier) {
            label = parseVariableIdentifier();

            if (!state.labelSet.has(label.name)) {
                throwError({}, Messages.UnknownLabel, label.name);
            }
        }

        consumeSemicolon();

        if (label === null && !(state.inIteration || state.inSwitch)) {
            throwError({}, Messages.IllegalBreak);
        }

        return markerApply(marker, delegate.createBreakStatement(label));
    }

    // 12.9 The return statement

    function parseReturnStatement() {
        var argument = null, marker = markerCreate();

        expectKeyword('return');

        if (!state.inFunctionBody) {
            throwErrorTolerant({}, Messages.IllegalReturn);
        }

        // 'return' followed by a space and an identifier is very common.
        if (source.charCodeAt(index) === 32) {
            if (isIdentifierStart(source.charCodeAt(index + 1))) {
                argument = parseExpression();
                consumeSemicolon();
                return markerApply(marker, delegate.createReturnStatement(argument));
            }
        }

        if (peekLineTerminator()) {
            return markerApply(marker, delegate.createReturnStatement(null));
        }

        if (!match(';')) {
            if (!match('}') && lookahead.type !== Token.EOF) {
                argument = parseExpression();
            }
        }

        consumeSemicolon();

        return markerApply(marker, delegate.createReturnStatement(argument));
    }

    // 12.10 The with statement

    function parseWithStatement() {
        var object, body, marker = markerCreate();

        if (strict) {
            throwErrorTolerant({}, Messages.StrictModeWith);
        }

        expectKeyword('with');

        expect('(');

        object = parseExpression();

        expect(')');

        body = parseStatement();

        return markerApply(marker, delegate.createWithStatement(object, body));
    }

    // 12.10 The swith statement

    function parseSwitchCase() {
        var test,
            consequent = [],
            sourceElement,
            marker = markerCreate();

        if (matchKeyword('default')) {
            lex();
            test = null;
        } else {
            expectKeyword('case');
            test = parseExpression();
        }
        expect(':');

        while (index < length) {
            if (match('}') || matchKeyword('default') || matchKeyword('case')) {
                break;
            }
            sourceElement = parseSourceElement();
            if (typeof sourceElement === 'undefined') {
                break;
            }
            consequent.push(sourceElement);
        }

        return markerApply(marker, delegate.createSwitchCase(test, consequent));
    }

    function parseSwitchStatement() {
        var discriminant, cases, clause, oldInSwitch, defaultFound, marker = markerCreate();

        expectKeyword('switch');

        expect('(');

        discriminant = parseExpression();

        expect(')');

        expect('{');

        cases = [];

        if (match('}')) {
            lex();
            return markerApply(marker, delegate.createSwitchStatement(discriminant, cases));
        }

        oldInSwitch = state.inSwitch;
        state.inSwitch = true;
        defaultFound = false;

        while (index < length) {
            if (match('}')) {
                break;
            }
            clause = parseSwitchCase();
            if (clause.test === null) {
                if (defaultFound) {
                    throwError({}, Messages.MultipleDefaultsInSwitch);
                }
                defaultFound = true;
            }
            cases.push(clause);
        }

        state.inSwitch = oldInSwitch;

        expect('}');

        return markerApply(marker, delegate.createSwitchStatement(discriminant, cases));
    }

    // 12.13 The throw statement

    function parseThrowStatement() {
        var argument, marker = markerCreate();

        expectKeyword('throw');

        if (peekLineTerminator()) {
            throwError({}, Messages.NewlineAfterThrow);
        }

        argument = parseExpression();

        consumeSemicolon();

        return markerApply(marker, delegate.createThrowStatement(argument));
    }

    // 12.14 The try statement

    function parseCatchClause() {
        var param, body, marker = markerCreate();

        expectKeyword('catch');

        expect('(');
        if (match(')')) {
            throwUnexpected(lookahead);
        }

        param = parseExpression();
        // 12.14.1
        if (strict && param.type === Syntax.Identifier && isRestrictedWord(param.name)) {
            throwErrorTolerant({}, Messages.StrictCatchVariable);
        }

        expect(')');
        body = parseBlock();
        return markerApply(marker, delegate.createCatchClause(param, body));
    }

    function parseTryStatement() {
        var block, handlers = [], finalizer = null, marker = markerCreate();

        expectKeyword('try');

        block = parseBlock();

        if (matchKeyword('catch')) {
            handlers.push(parseCatchClause());
        }

        if (matchKeyword('finally')) {
            lex();
            finalizer = parseBlock();
        }

        if (handlers.length === 0 && !finalizer) {
            throwError({}, Messages.NoCatchOrFinally);
        }

        return markerApply(marker, delegate.createTryStatement(block, [], handlers, finalizer));
    }

    // 12.15 The debugger statement

    function parseDebuggerStatement() {
        var marker = markerCreate();
        expectKeyword('debugger');

        consumeSemicolon();

        return markerApply(marker, delegate.createDebuggerStatement());
    }

    // 12 Statements

    function parseStatement() {
        var type = lookahead.type,
            marker,
            expr,
            labeledBody;

        if (type === Token.EOF) {
            throwUnexpected(lookahead);
        }

        if (type === Token.Punctuator) {
            switch (lookahead.value) {
            case ';':
                return parseEmptyStatement();
            case '{':
                return parseBlock();
            case '(':
                return parseExpressionStatement();
            default:
                break;
            }
        }

        if (type === Token.Keyword) {
            switch (lookahead.value) {
            case 'break':
                return parseBreakStatement();
            case 'continue':
                return parseContinueStatement();
            case 'debugger':
                return parseDebuggerStatement();
            case 'do':
                return parseDoWhileStatement();
            case 'for':
                return parseForStatement();
            case 'function':
                return parseFunctionDeclaration();
            case 'class':
                return parseClassDeclaration();
            case 'if':
                return parseIfStatement();
            case 'return':
                return parseReturnStatement();
            case 'switch':
                return parseSwitchStatement();
            case 'throw':
                return parseThrowStatement();
            case 'try':
                return parseTryStatement();
            case 'var':
                return parseVariableStatement();
            case 'while':
                return parseWhileStatement();
            case 'with':
                return parseWithStatement();
            default:
                break;
            }
        }

        if (matchAsyncFuncExprOrDecl()) {
            return parseFunctionDeclaration();
        }

        marker = markerCreate();
        expr = parseExpression();

        // 12.12 Labelled Statements
        if ((expr.type === Syntax.Identifier) && match(':')) {
            lex();

            if (state.labelSet.has(expr.name)) {
                throwError({}, Messages.Redeclaration, 'Label', expr.name);
            }

            state.labelSet.set(expr.name, true);
            labeledBody = parseStatement();
            state.labelSet.delete(expr.name);
            return markerApply(marker, delegate.createLabeledStatement(expr, labeledBody));
        }

        consumeSemicolon();

        return markerApply(marker, delegate.createExpressionStatement(expr));
    }

    // 13 Function Definition

    function parseConciseBody() {
        if (match('{')) {
            return parseFunctionSourceElements();
        }
        return parseAssignmentExpression();
    }

    function parseFunctionSourceElements() {
        var sourceElement, sourceElements = [], token, directive, firstRestricted,
            oldLabelSet, oldInIteration, oldInSwitch, oldInFunctionBody, oldParenthesizedCount,
            marker = markerCreate();

        expect('{');

        while (index < length) {
            if (lookahead.type !== Token.StringLiteral) {
                break;
            }
            token = lookahead;

            sourceElement = parseSourceElement();
            sourceElements.push(sourceElement);
            if (sourceElement.expression.type !== Syntax.Literal) {
                // this is not directive
                break;
            }
            directive = source.slice(token.range[0] + 1, token.range[1] - 1);
            if (directive === 'use strict') {
                strict = true;
                if (firstRestricted) {
                    throwErrorTolerant(firstRestricted, Messages.StrictOctalLiteral);
                }
            } else {
                if (!firstRestricted && token.octal) {
                    firstRestricted = token;
                }
            }
        }

        oldLabelSet = state.labelSet;
        oldInIteration = state.inIteration;
        oldInSwitch = state.inSwitch;
        oldInFunctionBody = state.inFunctionBody;
        oldParenthesizedCount = state.parenthesizedCount;

        state.labelSet = new StringMap();
        state.inIteration = false;
        state.inSwitch = false;
        state.inFunctionBody = true;
        state.parenthesizedCount = 0;

        while (index < length) {
            if (match('}')) {
                break;
            }
            sourceElement = parseSourceElement();
            if (typeof sourceElement === 'undefined') {
                break;
            }
            sourceElements.push(sourceElement);
        }

        expect('}');

        state.labelSet = oldLabelSet;
        state.inIteration = oldInIteration;
        state.inSwitch = oldInSwitch;
        state.inFunctionBody = oldInFunctionBody;
        state.parenthesizedCount = oldParenthesizedCount;

        return markerApply(marker, delegate.createBlockStatement(sourceElements));
    }

    function validateParam(options, param, name) {
        if (strict) {
            if (isRestrictedWord(name)) {
                options.stricted = param;
                options.message = Messages.StrictParamName;
            }
            if (options.paramSet.has(name)) {
                options.stricted = param;
                options.message = Messages.StrictParamDupe;
            }
        } else if (!options.firstRestricted) {
            if (isRestrictedWord(name)) {
                options.firstRestricted = param;
                options.message = Messages.StrictParamName;
            } else if (isStrictModeReservedWord(name)) {
                options.firstRestricted = param;
                options.message = Messages.StrictReservedWord;
            } else if (options.paramSet.has(name)) {
                options.firstRestricted = param;
                options.message = Messages.StrictParamDupe;
            }
        }
        options.paramSet.set(name, true);
    }

    function parseParam(options) {
        var marker, token, rest, param, def;

        token = lookahead;
        if (token.value === '...') {
            token = lex();
            rest = true;
        }

        if (match('[')) {
            marker = markerCreate();
            param = parseArrayInitialiser();
            reinterpretAsDestructuredParameter(options, param);
            if (match(':')) {
                param.typeAnnotation = parseTypeAnnotation();
                markerApply(marker, param);
            }
        } else if (match('{')) {
            marker = markerCreate();
            if (rest) {
                throwError({}, Messages.ObjectPatternAsRestParameter);
            }
            param = parseObjectInitialiser();
            reinterpretAsDestructuredParameter(options, param);
            if (match(':')) {
                param.typeAnnotation = parseTypeAnnotation();
                markerApply(marker, param);
            }
        } else {
            param =
                rest
                ? parseTypeAnnotatableIdentifier(
                    false, /* requireTypeAnnotation */
                    false /* canBeOptionalParam */
                )
                : parseTypeAnnotatableIdentifier(
                    false, /* requireTypeAnnotation */
                    true /* canBeOptionalParam */
                );

            validateParam(options, token, token.value);
        }

        if (match('=')) {
            if (rest) {
                throwErrorTolerant(lookahead, Messages.DefaultRestParameter);
            }
            lex();
            def = parseAssignmentExpression();
            ++options.defaultCount;
        }

        if (rest) {
            if (!match(')')) {
                throwError({}, Messages.ParameterAfterRestParameter);
            }
            options.rest = param;
            return false;
        }

        options.params.push(param);
        options.defaults.push(def);
        return !match(')');
    }

    function parseParams(firstRestricted) {
        var options, marker = markerCreate();

        options = {
            params: [],
            defaultCount: 0,
            defaults: [],
            rest: null,
            firstRestricted: firstRestricted
        };

        expect('(');

        if (!match(')')) {
            options.paramSet = new StringMap();
            while (index < length) {
                if (!parseParam(options)) {
                    break;
                }
                expect(',');
            }
        }

        expect(')');

        if (options.defaultCount === 0) {
            options.defaults = [];
        }

        if (match(':')) {
            options.returnType = parseTypeAnnotation();
        }

        return markerApply(marker, options);
    }

    function parseFunctionDeclaration() {
        var id, body, token, tmp, firstRestricted, message, generator, isAsync,
            previousStrict, previousYieldAllowed, previousAwaitAllowed,
            marker = markerCreate(), typeParameters;

        isAsync = false;
        if (matchAsync()) {
            lex();
            isAsync = true;
        }

        expectKeyword('function');

        generator = false;
        if (match('*')) {
            lex();
            generator = true;
        }

        token = lookahead;

        id = parseVariableIdentifier();

        if (match('<')) {
            typeParameters = parseTypeParameterDeclaration();
        }

        if (strict) {
            if (isRestrictedWord(token.value)) {
                throwErrorTolerant(token, Messages.StrictFunctionName);
            }
        } else {
            if (isRestrictedWord(token.value)) {
                firstRestricted = token;
                message = Messages.StrictFunctionName;
            } else if (isStrictModeReservedWord(token.value)) {
                firstRestricted = token;
                message = Messages.StrictReservedWord;
            }
        }

        tmp = parseParams(firstRestricted);
        firstRestricted = tmp.firstRestricted;
        if (tmp.message) {
            message = tmp.message;
        }

        previousStrict = strict;
        previousYieldAllowed = state.yieldAllowed;
        state.yieldAllowed = generator;
        previousAwaitAllowed = state.awaitAllowed;
        state.awaitAllowed = isAsync;

        body = parseFunctionSourceElements();

        if (strict && firstRestricted) {
            throwError(firstRestricted, message);
        }
        if (strict && tmp.stricted) {
            throwErrorTolerant(tmp.stricted, message);
        }
        strict = previousStrict;
        state.yieldAllowed = previousYieldAllowed;
        state.awaitAllowed = previousAwaitAllowed;

        return markerApply(
            marker,
            delegate.createFunctionDeclaration(
                id,
                tmp.params,
                tmp.defaults,
                body,
                tmp.rest,
                generator,
                false,
                isAsync,
                tmp.returnType,
                typeParameters
            )
        );
    }

    function parseFunctionExpression() {
        var token, id = null, firstRestricted, message, tmp, body, generator, isAsync,
            previousStrict, previousYieldAllowed, previousAwaitAllowed,
            marker = markerCreate(), typeParameters;

        isAsync = false;
        if (matchAsync()) {
            lex();
            isAsync = true;
        }

        expectKeyword('function');

        generator = false;

        if (match('*')) {
            lex();
            generator = true;
        }

        if (!match('(')) {
            if (!match('<')) {
                token = lookahead;
                id = parseVariableIdentifier();

                if (strict) {
                    if (isRestrictedWord(token.value)) {
                        throwErrorTolerant(token, Messages.StrictFunctionName);
                    }
                } else {
                    if (isRestrictedWord(token.value)) {
                        firstRestricted = token;
                        message = Messages.StrictFunctionName;
                    } else if (isStrictModeReservedWord(token.value)) {
                        firstRestricted = token;
                        message = Messages.StrictReservedWord;
                    }
                }
            }

            if (match('<')) {
                typeParameters = parseTypeParameterDeclaration();
            }
        }

        tmp = parseParams(firstRestricted);
        firstRestricted = tmp.firstRestricted;
        if (tmp.message) {
            message = tmp.message;
        }

        previousStrict = strict;
        previousYieldAllowed = state.yieldAllowed;
        state.yieldAllowed = generator;
        previousAwaitAllowed = state.awaitAllowed;
        state.awaitAllowed = isAsync;

        body = parseFunctionSourceElements();

        if (strict && firstRestricted) {
            throwError(firstRestricted, message);
        }
        if (strict && tmp.stricted) {
            throwErrorTolerant(tmp.stricted, message);
        }
        strict = previousStrict;
        state.yieldAllowed = previousYieldAllowed;
        state.awaitAllowed = previousAwaitAllowed;

        return markerApply(
            marker,
            delegate.createFunctionExpression(
                id,
                tmp.params,
                tmp.defaults,
                body,
                tmp.rest,
                generator,
                false,
                isAsync,
                tmp.returnType,
                typeParameters
            )
        );
    }

    function parseYieldExpression() {
        var delegateFlag, expr, marker = markerCreate();

        expectKeyword('yield', !strict);

        delegateFlag = false;
        if (match('*')) {
            lex();
            delegateFlag = true;
        }

        expr = parseAssignmentExpression();

        return markerApply(marker, delegate.createYieldExpression(expr, delegateFlag));
    }

    function parseAwaitExpression() {
        var expr, marker = markerCreate();
        expectContextualKeyword('await');
        expr = parseAssignmentExpression();
        return markerApply(marker, delegate.createAwaitExpression(expr));
    }

    // 14 Functions and classes

    // 14.1 Functions is defined above (13 in ES5)
    // 14.2 Arrow Functions Definitions is defined in (7.3 assignments)

    // 14.3 Method Definitions
    // 14.3.7
    function specialMethod(methodDefinition) {
        return methodDefinition.kind === 'get' ||
               methodDefinition.kind === 'set' ||
               methodDefinition.value.generator;
    }

    function parseMethodDefinition(key, isStatic, generator, computed) {
        var token, param, propType,
            isAsync, typeParameters, tokenValue, returnType;

        propType = isStatic ? ClassPropertyType.static : ClassPropertyType.prototype;

        if (generator) {
            return delegate.createMethodDefinition(
                propType,
                '',
                key,
                parsePropertyMethodFunction({ generator: true }),
                computed
            );
        }

        tokenValue = key.type === 'Identifier' && key.name;

        if (tokenValue === 'get' && !match('(')) {
            key = parseObjectPropertyKey();

            expect('(');
            expect(')');
            if (match(':')) {
                returnType = parseTypeAnnotation();
            }
            return delegate.createMethodDefinition(
                propType,
                'get',
                key,
                parsePropertyFunction({ generator: false, returnType: returnType }),
                computed
            );
        }
        if (tokenValue === 'set' && !match('(')) {
            key = parseObjectPropertyKey();

            expect('(');
            token = lookahead;
            param = [ parseTypeAnnotatableIdentifier() ];
            expect(')');
            if (match(':')) {
                returnType = parseTypeAnnotation();
            }
            return delegate.createMethodDefinition(
                propType,
                'set',
                key,
                parsePropertyFunction({
                    params: param,
                    generator: false,
                    name: token,
                    returnType: returnType
                }),
                computed
            );
        }

        if (match('<')) {
            typeParameters = parseTypeParameterDeclaration();
        }

        isAsync = tokenValue === 'async' && !match('(');
        if (isAsync) {
            key = parseObjectPropertyKey();
        }

        return delegate.createMethodDefinition(
            propType,
            '',
            key,
            parsePropertyMethodFunction({
                generator: false,
                async: isAsync,
                typeParameters: typeParameters
            }),
            computed
        );
    }

    function parseClassProperty(key, computed, isStatic) {
        var typeAnnotation;

        typeAnnotation = parseTypeAnnotation();
        expect(';');

        return delegate.createClassProperty(
            key,
            typeAnnotation,
            computed,
            isStatic
        );
    }

    function parseClassElement() {
        var computed = false, generator = false, key, marker = markerCreate(),
            isStatic = false, possiblyOpenBracketToken;
        if (match(';')) {
            lex();
            return undefined;
        }

        if (lookahead.value === 'static') {
            lex();
            isStatic = true;
        }

        if (match('*')) {
            lex();
            generator = true;
        }

        possiblyOpenBracketToken = lookahead;
        if (matchContextualKeyword('get') || matchContextualKeyword('set')) {
            possiblyOpenBracketToken = lookahead2();
        }

        if (possiblyOpenBracketToken.type === Token.Punctuator
                && possiblyOpenBracketToken.value === '[') {
            computed = true;
        }

        key = parseObjectPropertyKey();

        if (!generator && lookahead.value === ':') {
            return markerApply(marker, parseClassProperty(key, computed, isStatic));
        }

        return markerApply(marker, parseMethodDefinition(
            key,
            isStatic,
            generator,
            computed
        ));
    }

    function parseClassBody() {
        var classElement, classElements = [], existingProps = {},
            marker = markerCreate(), propName, propType;

        existingProps[ClassPropertyType.static] = new StringMap();
        existingProps[ClassPropertyType.prototype] = new StringMap();

        expect('{');

        while (index < length) {
            if (match('}')) {
                break;
            }
            classElement = parseClassElement(existingProps);

            if (typeof classElement !== 'undefined') {
                classElements.push(classElement);

                propName = !classElement.computed && getFieldName(classElement.key);
                if (propName !== false) {
                    propType = classElement.static ?
                                ClassPropertyType.static :
                                ClassPropertyType.prototype;

                    if (classElement.type === Syntax.MethodDefinition) {
                        if (propName === 'constructor' && !classElement.static) {
                            if (specialMethod(classElement)) {
                                throwError(classElement, Messages.IllegalClassConstructorProperty);
                            }
                            if (existingProps[ClassPropertyType.prototype].has('constructor')) {
                                throwError(classElement.key, Messages.IllegalDuplicateClassProperty);
                            }
                        }
                        existingProps[propType].set(propName, true);
                    }
                }
            }
        }

        expect('}');

        return markerApply(marker, delegate.createClassBody(classElements));
    }

    function parseClassImplements() {
        var id, implemented = [], marker, typeParameters;
        if (strict) {
            expectKeyword('implements');
        } else {
            expectContextualKeyword('implements');
        }
        while (index < length) {
            marker = markerCreate();
            id = parseVariableIdentifier();
            if (match('<')) {
                typeParameters = parseTypeParameterInstantiation();
            } else {
                typeParameters = null;
            }
            implemented.push(markerApply(marker, delegate.createClassImplements(
                id,
                typeParameters
            )));
            if (!match(',')) {
                break;
            }
            expect(',');
        }
        return implemented;
    }

    function parseClassExpression() {
        var id, implemented, previousYieldAllowed, superClass = null,
            superTypeParameters, marker = markerCreate(), typeParameters,
            matchImplements;

        expectKeyword('class');

        matchImplements =
                strict
                ? matchKeyword('implements')
                : matchContextualKeyword('implements');

        if (!matchKeyword('extends') && !matchImplements && !match('{')) {
            id = parseVariableIdentifier();
        }

        if (match('<')) {
            typeParameters = parseTypeParameterDeclaration();
        }

        if (matchKeyword('extends')) {
            expectKeyword('extends');
            previousYieldAllowed = state.yieldAllowed;
            state.yieldAllowed = false;
            superClass = parseLeftHandSideExpressionAllowCall();
            if (match('<')) {
                superTypeParameters = parseTypeParameterInstantiation();
            }
            state.yieldAllowed = previousYieldAllowed;
        }

        if (strict ? matchKeyword('implements') : matchContextualKeyword('implements')) {
            implemented = parseClassImplements();
        }

        return markerApply(marker, delegate.createClassExpression(
            id,
            superClass,
            parseClassBody(),
            typeParameters,
            superTypeParameters,
            implemented
        ));
    }

    function parseClassDeclaration() {
        var id, implemented, previousYieldAllowed, superClass = null,
            superTypeParameters, marker = markerCreate(), typeParameters;

        expectKeyword('class');

        id = parseVariableIdentifier();

        if (match('<')) {
            typeParameters = parseTypeParameterDeclaration();
        }

        if (matchKeyword('extends')) {
            expectKeyword('extends');
            previousYieldAllowed = state.yieldAllowed;
            state.yieldAllowed = false;
            superClass = parseLeftHandSideExpressionAllowCall();
            if (match('<')) {
                superTypeParameters = parseTypeParameterInstantiation();
            }
            state.yieldAllowed = previousYieldAllowed;
        }

        if (strict ? matchKeyword('implements') : matchContextualKeyword('implements')) {
            implemented = parseClassImplements();
        }

        return markerApply(marker, delegate.createClassDeclaration(
            id,
            superClass,
            parseClassBody(),
            typeParameters,
            superTypeParameters,
            implemented
        ));
    }

    // 15 Program

    function parseSourceElement() {
        var token;
        if (lookahead.type === Token.Keyword) {
            switch (lookahead.value) {
            case 'const':
            case 'let':
                return parseConstLetDeclaration(lookahead.value);
            case 'function':
                return parseFunctionDeclaration();
            case 'export':
                throwErrorTolerant({}, Messages.IllegalExportDeclaration);
                return parseExportDeclaration();
            case 'import':
                throwErrorTolerant({}, Messages.IllegalImportDeclaration);
                return parseImportDeclaration();
            case 'interface':
                if (lookahead2().type === Token.Identifier) {
                    return parseInterface();
                }
                return parseStatement();
            default:
                return parseStatement();
            }
        }

        if (matchContextualKeyword('type')
                && lookahead2().type === Token.Identifier) {
            return parseTypeAlias();
        }

        if (matchContextualKeyword('interface')
                && lookahead2().type === Token.Identifier) {
            return parseInterface();
        }

        if (matchContextualKeyword('declare')) {
            token = lookahead2();
            if (token.type === Token.Keyword) {
                switch (token.value) {
                case 'class':
                    return parseDeclareClass();
                case 'function':
                    return parseDeclareFunction();
                case 'var':
                    return parseDeclareVariable();
                }
            } else if (token.type === Token.Identifier
                    && token.value === 'module') {
                return parseDeclareModule();
            }
        }

        if (lookahead.type !== Token.EOF) {
            return parseStatement();
        }
    }

    function parseProgramElement() {
        var isModule = extra.sourceType === 'module' || extra.sourceType === 'nonStrictModule';

        if (isModule && lookahead.type === Token.Keyword) {
            switch (lookahead.value) {
            case 'export':
                return parseExportDeclaration();
            case 'import':
                return parseImportDeclaration();
            }
        }

        return parseSourceElement();
    }

    function parseProgramElements() {
        var sourceElement, sourceElements = [], token, directive, firstRestricted;

        while (index < length) {
            token = lookahead;
            if (token.type !== Token.StringLiteral) {
                break;
            }

            sourceElement = parseProgramElement();
            sourceElements.push(sourceElement);
            if (sourceElement.expression.type !== Syntax.Literal) {
                // this is not directive
                break;
            }
            directive = source.slice(token.range[0] + 1, token.range[1] - 1);
            if (directive === 'use strict') {
                strict = true;
                if (firstRestricted) {
                    throwErrorTolerant(firstRestricted, Messages.StrictOctalLiteral);
                }
            } else {
                if (!firstRestricted && token.octal) {
                    firstRestricted = token;
                }
            }
        }

        while (index < length) {
            sourceElement = parseProgramElement();
            if (typeof sourceElement === 'undefined') {
                break;
            }
            sourceElements.push(sourceElement);
        }
        return sourceElements;
    }

    function parseProgram() {
        var body, marker = markerCreate();
        strict = extra.sourceType === 'module';
        peek();
        body = parseProgramElements();
        return markerApply(marker, delegate.createProgram(body));
    }

    // 16 JSX

    XHTMLEntities = {
        quot: '\u0022',
        amp: '&',
        apos: '\u0027',
        lt: '<',
        gt: '>',
        nbsp: '\u00A0',
        iexcl: '\u00A1',
        cent: '\u00A2',
        pound: '\u00A3',
        curren: '\u00A4',
        yen: '\u00A5',
        brvbar: '\u00A6',
        sect: '\u00A7',
        uml: '\u00A8',
        copy: '\u00A9',
        ordf: '\u00AA',
        laquo: '\u00AB',
        not: '\u00AC',
        shy: '\u00AD',
        reg: '\u00AE',
        macr: '\u00AF',
        deg: '\u00B0',
        plusmn: '\u00B1',
        sup2: '\u00B2',
        sup3: '\u00B3',
        acute: '\u00B4',
        micro: '\u00B5',
        para: '\u00B6',
        middot: '\u00B7',
        cedil: '\u00B8',
        sup1: '\u00B9',
        ordm: '\u00BA',
        raquo: '\u00BB',
        frac14: '\u00BC',
        frac12: '\u00BD',
        frac34: '\u00BE',
        iquest: '\u00BF',
        Agrave: '\u00C0',
        Aacute: '\u00C1',
        Acirc: '\u00C2',
        Atilde: '\u00C3',
        Auml: '\u00C4',
        Aring: '\u00C5',
        AElig: '\u00C6',
        Ccedil: '\u00C7',
        Egrave: '\u00C8',
        Eacute: '\u00C9',
        Ecirc: '\u00CA',
        Euml: '\u00CB',
        Igrave: '\u00CC',
        Iacute: '\u00CD',
        Icirc: '\u00CE',
        Iuml: '\u00CF',
        ETH: '\u00D0',
        Ntilde: '\u00D1',
        Ograve: '\u00D2',
        Oacute: '\u00D3',
        Ocirc: '\u00D4',
        Otilde: '\u00D5',
        Ouml: '\u00D6',
        times: '\u00D7',
        Oslash: '\u00D8',
        Ugrave: '\u00D9',
        Uacute: '\u00DA',
        Ucirc: '\u00DB',
        Uuml: '\u00DC',
        Yacute: '\u00DD',
        THORN: '\u00DE',
        szlig: '\u00DF',
        agrave: '\u00E0',
        aacute: '\u00E1',
        acirc: '\u00E2',
        atilde: '\u00E3',
        auml: '\u00E4',
        aring: '\u00E5',
        aelig: '\u00E6',
        ccedil: '\u00E7',
        egrave: '\u00E8',
        eacute: '\u00E9',
        ecirc: '\u00EA',
        euml: '\u00EB',
        igrave: '\u00EC',
        iacute: '\u00ED',
        icirc: '\u00EE',
        iuml: '\u00EF',
        eth: '\u00F0',
        ntilde: '\u00F1',
        ograve: '\u00F2',
        oacute: '\u00F3',
        ocirc: '\u00F4',
        otilde: '\u00F5',
        ouml: '\u00F6',
        divide: '\u00F7',
        oslash: '\u00F8',
        ugrave: '\u00F9',
        uacute: '\u00FA',
        ucirc: '\u00FB',
        uuml: '\u00FC',
        yacute: '\u00FD',
        thorn: '\u00FE',
        yuml: '\u00FF',
        OElig: '\u0152',
        oelig: '\u0153',
        Scaron: '\u0160',
        scaron: '\u0161',
        Yuml: '\u0178',
        fnof: '\u0192',
        circ: '\u02C6',
        tilde: '\u02DC',
        Alpha: '\u0391',
        Beta: '\u0392',
        Gamma: '\u0393',
        Delta: '\u0394',
        Epsilon: '\u0395',
        Zeta: '\u0396',
        Eta: '\u0397',
        Theta: '\u0398',
        Iota: '\u0399',
        Kappa: '\u039A',
        Lambda: '\u039B',
        Mu: '\u039C',
        Nu: '\u039D',
        Xi: '\u039E',
        Omicron: '\u039F',
        Pi: '\u03A0',
        Rho: '\u03A1',
        Sigma: '\u03A3',
        Tau: '\u03A4',
        Upsilon: '\u03A5',
        Phi: '\u03A6',
        Chi: '\u03A7',
        Psi: '\u03A8',
        Omega: '\u03A9',
        alpha: '\u03B1',
        beta: '\u03B2',
        gamma: '\u03B3',
        delta: '\u03B4',
        epsilon: '\u03B5',
        zeta: '\u03B6',
        eta: '\u03B7',
        theta: '\u03B8',
        iota: '\u03B9',
        kappa: '\u03BA',
        lambda: '\u03BB',
        mu: '\u03BC',
        nu: '\u03BD',
        xi: '\u03BE',
        omicron: '\u03BF',
        pi: '\u03C0',
        rho: '\u03C1',
        sigmaf: '\u03C2',
        sigma: '\u03C3',
        tau: '\u03C4',
        upsilon: '\u03C5',
        phi: '\u03C6',
        chi: '\u03C7',
        psi: '\u03C8',
        omega: '\u03C9',
        thetasym: '\u03D1',
        upsih: '\u03D2',
        piv: '\u03D6',
        ensp: '\u2002',
        emsp: '\u2003',
        thinsp: '\u2009',
        zwnj: '\u200C',
        zwj: '\u200D',
        lrm: '\u200E',
        rlm: '\u200F',
        ndash: '\u2013',
        mdash: '\u2014',
        lsquo: '\u2018',
        rsquo: '\u2019',
        sbquo: '\u201A',
        ldquo: '\u201C',
        rdquo: '\u201D',
        bdquo: '\u201E',
        dagger: '\u2020',
        Dagger: '\u2021',
        bull: '\u2022',
        hellip: '\u2026',
        permil: '\u2030',
        prime: '\u2032',
        Prime: '\u2033',
        lsaquo: '\u2039',
        rsaquo: '\u203A',
        oline: '\u203E',
        frasl: '\u2044',
        euro: '\u20AC',
        image: '\u2111',
        weierp: '\u2118',
        real: '\u211C',
        trade: '\u2122',
        alefsym: '\u2135',
        larr: '\u2190',
        uarr: '\u2191',
        rarr: '\u2192',
        darr: '\u2193',
        harr: '\u2194',
        crarr: '\u21B5',
        lArr: '\u21D0',
        uArr: '\u21D1',
        rArr: '\u21D2',
        dArr: '\u21D3',
        hArr: '\u21D4',
        forall: '\u2200',
        part: '\u2202',
        exist: '\u2203',
        empty: '\u2205',
        nabla: '\u2207',
        isin: '\u2208',
        notin: '\u2209',
        ni: '\u220B',
        prod: '\u220F',
        sum: '\u2211',
        minus: '\u2212',
        lowast: '\u2217',
        radic: '\u221A',
        prop: '\u221D',
        infin: '\u221E',
        ang: '\u2220',
        and: '\u2227',
        or: '\u2228',
        cap: '\u2229',
        cup: '\u222A',
        'int': '\u222B',
        there4: '\u2234',
        sim: '\u223C',
        cong: '\u2245',
        asymp: '\u2248',
        ne: '\u2260',
        equiv: '\u2261',
        le: '\u2264',
        ge: '\u2265',
        sub: '\u2282',
        sup: '\u2283',
        nsub: '\u2284',
        sube: '\u2286',
        supe: '\u2287',
        oplus: '\u2295',
        otimes: '\u2297',
        perp: '\u22A5',
        sdot: '\u22C5',
        lceil: '\u2308',
        rceil: '\u2309',
        lfloor: '\u230A',
        rfloor: '\u230B',
        lang: '\u2329',
        rang: '\u232A',
        loz: '\u25CA',
        spades: '\u2660',
        clubs: '\u2663',
        hearts: '\u2665',
        diams: '\u2666'
    };

    function getQualifiedJSXName(object) {
        if (object.type === Syntax.JSXIdentifier) {
            return object.name;
        }
        if (object.type === Syntax.JSXNamespacedName) {
            return object.namespace.name + ':' + object.name.name;
        }
        /* istanbul ignore else */
        if (object.type === Syntax.JSXMemberExpression) {
            return (
                getQualifiedJSXName(object.object) + '.' +
                getQualifiedJSXName(object.property)
            );
        }
        /* istanbul ignore next */
        throwUnexpected(object);
    }

    function isJSXIdentifierStart(ch) {
        // exclude backslash (\)
        return (ch !== 92) && isIdentifierStart(ch);
    }

    function isJSXIdentifierPart(ch) {
        // exclude backslash (\) and add hyphen (-)
        return (ch !== 92) && (ch === 45 || isIdentifierPart(ch));
    }

    function scanJSXIdentifier() {
        var ch, start, value = '';

        start = index;
        while (index < length) {
            ch = source.charCodeAt(index);
            if (!isJSXIdentifierPart(ch)) {
                break;
            }
            value += source[index++];
        }

        return {
            type: Token.JSXIdentifier,
            value: value,
            lineNumber: lineNumber,
            lineStart: lineStart,
            range: [start, index]
        };
    }

    function scanJSXEntity() {
        var ch, str = '', start = index, count = 0, code;
        ch = source[index];
        assert(ch === '&', 'Entity must start with an ampersand');
        index++;
        while (index < length && count++ < 10) {
            ch = source[index++];
            if (ch === ';') {
                break;
            }
            str += ch;
        }

        // Well-formed entity (ending was found).
        if (ch === ';') {
            // Numeric entity.
            if (str[0] === '#') {
                if (str[1] === 'x') {
                    code = +('0' + str.substr(1));
                } else {
                    // Removing leading zeros in order to avoid treating as octal in old browsers.
                    code = +str.substr(1).replace(Regex.LeadingZeros, '');
                }

                if (!isNaN(code)) {
                    return String.fromCharCode(code);
                }
            /* istanbul ignore else */
            } else if (XHTMLEntities[str]) {
                return XHTMLEntities[str];
            }
        }

        // Treat non-entity sequences as regular text.
        index = start + 1;
        return '&';
    }

    function scanJSXText(stopChars) {
        var ch, str = '', start;
        start = index;
        while (index < length) {
            ch = source[index];
            if (stopChars.indexOf(ch) !== -1) {
                break;
            }
            if (ch === '&') {
                str += scanJSXEntity();
            } else {
                index++;
                if (ch === '\r' && source[index] === '\n') {
                    str += ch;
                    ch = source[index];
                    index++;
                }
                if (isLineTerminator(ch.charCodeAt(0))) {
                    ++lineNumber;
                    lineStart = index;
                }
                str += ch;
            }
        }
        return {
            type: Token.JSXText,
            value: str,
            lineNumber: lineNumber,
            lineStart: lineStart,
            range: [start, index]
        };
    }

    function scanJSXStringLiteral() {
        var innerToken, quote, start;

        quote = source[index];
        assert((quote === '\'' || quote === '"'),
            'String literal must starts with a quote');

        start = index;
        ++index;

        innerToken = scanJSXText([quote]);

        if (quote !== source[index]) {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        ++index;

        innerToken.range = [start, index];

        return innerToken;
    }

    /**
     * Between JSX opening and closing tags (e.g. <foo>HERE</foo>), anything that
     * is not another JSX tag and is not an expression wrapped by {} is text.
     */
    function advanceJSXChild() {
        var ch = source.charCodeAt(index);

        // '<' 60, '>' 62, '{' 123, '}' 125
        if (ch !== 60 && ch !== 62 && ch !== 123 && ch !== 125) {
            return scanJSXText(['<', '>', '{', '}']);
        }

        return scanPunctuator();
    }

    function parseJSXIdentifier() {
        var token, marker = markerCreate();

        if (lookahead.type !== Token.JSXIdentifier) {
            throwUnexpected(lookahead);
        }

        token = lex();
        return markerApply(marker, delegate.createJSXIdentifier(token.value));
    }

    function parseJSXNamespacedName() {
        var namespace, name, marker = markerCreate();

        namespace = parseJSXIdentifier();
        expect(':');
        name = parseJSXIdentifier();

        return markerApply(marker, delegate.createJSXNamespacedName(namespace, name));
    }

    function parseJSXMemberExpression() {
        var marker = markerCreate(),
            expr = parseJSXIdentifier();

        while (match('.')) {
            lex();
            expr = markerApply(marker, delegate.createJSXMemberExpression(expr, parseJSXIdentifier()));
        }

        return expr;
    }

    function parseJSXElementName() {
        if (lookahead2().value === ':') {
            return parseJSXNamespacedName();
        }
        if (lookahead2().value === '.') {
            return parseJSXMemberExpression();
        }

        return parseJSXIdentifier();
    }

    function parseJSXAttributeName() {
        if (lookahead2().value === ':') {
            return parseJSXNamespacedName();
        }

        return parseJSXIdentifier();
    }

    function parseJSXAttributeValue() {
        var value, marker;
        if (match('{')) {
            value = parseJSXExpressionContainer();
            if (value.expression.type === Syntax.JSXEmptyExpression) {
                throwError(
                    value,
                    'JSX attributes must only be assigned a non-empty ' +
                        'expression'
                );
            }
        } else if (match('<')) {
            value = parseJSXElement();
        } else if (lookahead.type === Token.JSXText) {
            marker = markerCreate();
            value = markerApply(marker, delegate.createLiteral(lex()));
        } else {
            throwError({}, Messages.InvalidJSXAttributeValue);
        }
        return value;
    }

    function parseJSXEmptyExpression() {
        var marker = markerCreatePreserveWhitespace();
        while (source.charAt(index) !== '}') {
            index++;
        }
        return markerApply(marker, delegate.createJSXEmptyExpression());
    }

    function parseJSXExpressionContainer() {
        var expression, origInJSXChild, origInJSXTag, marker = markerCreate();

        origInJSXChild = state.inJSXChild;
        origInJSXTag = state.inJSXTag;
        state.inJSXChild = false;
        state.inJSXTag = false;

        expect('{');

        if (match('}')) {
            expression = parseJSXEmptyExpression();
        } else {
            expression = parseExpression();
        }

        state.inJSXChild = origInJSXChild;
        state.inJSXTag = origInJSXTag;

        expect('}');

        return markerApply(marker, delegate.createJSXExpressionContainer(expression));
    }

    function parseJSXSpreadAttribute() {
        var expression, origInJSXChild, origInJSXTag, marker = markerCreate();

        origInJSXChild = state.inJSXChild;
        origInJSXTag = state.inJSXTag;
        state.inJSXChild = false;
        state.inJSXTag = false;

        expect('{');
        expect('...');

        expression = parseAssignmentExpression();

        state.inJSXChild = origInJSXChild;
        state.inJSXTag = origInJSXTag;

        expect('}');

        return markerApply(marker, delegate.createJSXSpreadAttribute(expression));
    }

    function parseJSXAttribute() {
        var name, marker;

        if (match('{')) {
            return parseJSXSpreadAttribute();
        }

        marker = markerCreate();

        name = parseJSXAttributeName();

        // HTML empty attribute
        if (match('=')) {
            lex();
            return markerApply(marker, delegate.createJSXAttribute(name, parseJSXAttributeValue()));
        }

        return markerApply(marker, delegate.createJSXAttribute(name));
    }

    function parseJSXChild() {
        var token, marker;
        if (match('{')) {
            token = parseJSXExpressionContainer();
        } else if (lookahead.type === Token.JSXText) {
            marker = markerCreatePreserveWhitespace();
            token = markerApply(marker, delegate.createLiteral(lex()));
        } else if (match('<')) {
            token = parseJSXElement();
        } else {
            throwUnexpected(lookahead);
        }
        return token;
    }

    function parseJSXClosingElement() {
        var name, origInJSXChild, origInJSXTag, marker = markerCreate();
        origInJSXChild = state.inJSXChild;
        origInJSXTag = state.inJSXTag;
        state.inJSXChild = false;
        state.inJSXTag = true;
        expect('<');
        expect('/');
        name = parseJSXElementName();
        // Because advance() (called by lex() called by expect()) expects there
        // to be a valid token after >, it needs to know whether to look for a
        // standard JS token or an JSX text node
        state.inJSXChild = origInJSXChild;
        state.inJSXTag = origInJSXTag;
        expect('>');
        return markerApply(marker, delegate.createJSXClosingElement(name));
    }

    function parseJSXOpeningElement() {
        var name, attributes = [], selfClosing = false, origInJSXChild, origInJSXTag, marker = markerCreate();

        origInJSXChild = state.inJSXChild;
        origInJSXTag = state.inJSXTag;
        state.inJSXChild = false;
        state.inJSXTag = true;

        expect('<');

        name = parseJSXElementName();

        while (index < length &&
                lookahead.value !== '/' &&
                lookahead.value !== '>') {
            attributes.push(parseJSXAttribute());
        }

        state.inJSXTag = origInJSXTag;

        if (lookahead.value === '/') {
            expect('/');
            // Because advance() (called by lex() called by expect()) expects
            // there to be a valid token after >, it needs to know whether to
            // look for a standard JS token or an JSX text node
            state.inJSXChild = origInJSXChild;
            expect('>');
            selfClosing = true;
        } else {
            state.inJSXChild = true;
            expect('>');
        }
        return markerApply(marker, delegate.createJSXOpeningElement(name, attributes, selfClosing));
    }

    function parseJSXElement() {
        var openingElement, closingElement = null, children = [], origInJSXChild, origInJSXTag, marker = markerCreate();

        origInJSXChild = state.inJSXChild;
        origInJSXTag = state.inJSXTag;
        openingElement = parseJSXOpeningElement();

        if (!openingElement.selfClosing) {
            while (index < length) {
                state.inJSXChild = false; // Call lookahead2() with inJSXChild = false because </ should not be considered in the child
                if (lookahead.value === '<' && lookahead2().value === '/') {
                    break;
                }
                state.inJSXChild = true;
                children.push(parseJSXChild());
            }
            state.inJSXChild = origInJSXChild;
            state.inJSXTag = origInJSXTag;
            closingElement = parseJSXClosingElement();
            if (getQualifiedJSXName(closingElement.name) !== getQualifiedJSXName(openingElement.name)) {
                throwError({}, Messages.ExpectedJSXClosingTag, getQualifiedJSXName(openingElement.name));
            }
        }

        // When (erroneously) writing two adjacent tags like
        //
        //     var x = <div>one</div><div>two</div>;
        //
        // the default error message is a bit incomprehensible. Since it's
        // rarely (never?) useful to write a less-than sign after an JSX
        // element, we disallow it here in the parser in order to provide a
        // better error message. (In the rare case that the less-than operator
        // was intended, the left tag can be wrapped in parentheses.)
        if (!origInJSXChild && match('<')) {
            throwError(lookahead, Messages.AdjacentJSXElements);
        }

        return markerApply(marker, delegate.createJSXElement(openingElement, closingElement, children));
    }

    function parseTypeAlias() {
        var id, marker = markerCreate(), typeParameters = null, right;
        expectContextualKeyword('type');
        id = parseVariableIdentifier();
        if (match('<')) {
            typeParameters = parseTypeParameterDeclaration();
        }
        expect('=');
        right = parseType();
        consumeSemicolon();
        return markerApply(marker, delegate.createTypeAlias(id, typeParameters, right));
    }

    function parseInterfaceExtends() {
        var marker = markerCreate(), id, typeParameters = null;

        id = parseVariableIdentifier();
        if (match('<')) {
            typeParameters = parseTypeParameterInstantiation();
        }

        return markerApply(marker, delegate.createInterfaceExtends(
            id,
            typeParameters
        ));
    }

    function parseInterfaceish(marker, allowStatic) {
        var body, bodyMarker, extended = [], id,
            typeParameters = null;

        id = parseVariableIdentifier();
        if (match('<')) {
            typeParameters = parseTypeParameterDeclaration();
        }

        if (matchKeyword('extends')) {
            expectKeyword('extends');

            while (index < length) {
                extended.push(parseInterfaceExtends());
                if (!match(',')) {
                    break;
                }
                expect(',');
            }
        }

        bodyMarker = markerCreate();
        body = markerApply(bodyMarker, parseObjectType(allowStatic));

        return markerApply(marker, delegate.createInterface(
            id,
            typeParameters,
            body,
            extended
        ));
    }

    function parseInterface() {
        var marker = markerCreate();

        if (strict) {
            expectKeyword('interface');
        } else {
            expectContextualKeyword('interface');
        }

        return parseInterfaceish(marker, /* allowStatic */false);
    }

    function parseDeclareClass() {
        var marker = markerCreate(), ret;
        expectContextualKeyword('declare');
        expectKeyword('class');

        ret = parseInterfaceish(marker, /* allowStatic */true);
        ret.type = Syntax.DeclareClass;
        return ret;
    }

    function parseDeclareFunction() {
        var id, idMarker,
            marker = markerCreate(), params, returnType, rest, tmp,
            typeParameters = null, value, valueMarker;

        expectContextualKeyword('declare');
        expectKeyword('function');
        idMarker = markerCreate();
        id = parseVariableIdentifier();

        valueMarker = markerCreate();
        if (match('<')) {
            typeParameters = parseTypeParameterDeclaration();
        }
        expect('(');
        tmp = parseFunctionTypeParams();
        params = tmp.params;
        rest = tmp.rest;
        expect(')');

        expect(':');
        returnType = parseType();

        value = markerApply(valueMarker, delegate.createFunctionTypeAnnotation(
            params,
            returnType,
            rest,
            typeParameters
        ));

        id.typeAnnotation = markerApply(valueMarker, delegate.createTypeAnnotation(
            value
        ));
        markerApply(idMarker, id);

        consumeSemicolon();

        return markerApply(marker, delegate.createDeclareFunction(
            id
        ));
    }

    function parseDeclareVariable() {
        var id, marker = markerCreate();
        expectContextualKeyword('declare');
        expectKeyword('var');
        id = parseTypeAnnotatableIdentifier();

        consumeSemicolon();

        return markerApply(marker, delegate.createDeclareVariable(
            id
        ));
    }

    function parseDeclareModule() {
        var body = [], bodyMarker, id, idMarker, marker = markerCreate(), token;
        expectContextualKeyword('declare');
        expectContextualKeyword('module');

        if (lookahead.type === Token.StringLiteral) {
            if (strict && lookahead.octal) {
                throwErrorTolerant(lookahead, Messages.StrictOctalLiteral);
            }
            idMarker = markerCreate();
            id = markerApply(idMarker, delegate.createLiteral(lex()));
        } else {
            id = parseVariableIdentifier();
        }

        bodyMarker = markerCreate();
        expect('{');
        while (index < length && !match('}')) {
            token = lookahead2();
            switch (token.value) {
            case 'class':
                body.push(parseDeclareClass());
                break;
            case 'function':
                body.push(parseDeclareFunction());
                break;
            case 'var':
                body.push(parseDeclareVariable());
                break;
            default:
                throwUnexpected(lookahead);
            }
        }
        expect('}');

        return markerApply(marker, delegate.createDeclareModule(
            id,
            markerApply(bodyMarker, delegate.createBlockStatement(body))
        ));
    }

    function collectToken() {
        var loc, token, range, value, entry;

        /* istanbul ignore else */
        if (!state.inJSXChild) {
            skipComment();
        }

        loc = {
            start: {
                line: lineNumber,
                column: index - lineStart
            }
        };

        token = extra.advance();
        loc.end = {
            line: lineNumber,
            column: index - lineStart
        };

        if (token.type !== Token.EOF) {
            range = [token.range[0], token.range[1]];
            value = source.slice(token.range[0], token.range[1]);
            entry = {
                type: TokenName[token.type],
                value: value,
                range: range,
                loc: loc
            };
            if (token.regex) {
                entry.regex = {
                    pattern: token.regex.pattern,
                    flags: token.regex.flags
                };
            }
            extra.tokens.push(entry);
        }

        return token;
    }

    function collectRegex() {
        var pos, loc, regex, token;

        skipComment();

        pos = index;
        loc = {
            start: {
                line: lineNumber,
                column: index - lineStart
            }
        };

        regex = extra.scanRegExp();
        loc.end = {
            line: lineNumber,
            column: index - lineStart
        };

        if (!extra.tokenize) {
            /* istanbul ignore next */
            // Pop the previous token, which is likely '/' or '/='
            if (extra.tokens.length > 0) {
                token = extra.tokens[extra.tokens.length - 1];
                if (token.range[0] === pos && token.type === 'Punctuator') {
                    if (token.value === '/' || token.value === '/=') {
                        extra.tokens.pop();
                    }
                }
            }

            extra.tokens.push({
                type: 'RegularExpression',
                value: regex.literal,
                regex: regex.regex,
                range: [pos, index],
                loc: loc
            });
        }

        return regex;
    }

    function filterTokenLocation() {
        var i, entry, token, tokens = [];

        for (i = 0; i < extra.tokens.length; ++i) {
            entry = extra.tokens[i];
            token = {
                type: entry.type,
                value: entry.value
            };
            if (entry.regex) {
                token.regex = {
                    pattern: entry.regex.pattern,
                    flags: entry.regex.flags
                };
            }
            if (extra.range) {
                token.range = entry.range;
            }
            if (extra.loc) {
                token.loc = entry.loc;
            }
            tokens.push(token);
        }

        extra.tokens = tokens;
    }

    function patch() {
        if (typeof extra.tokens !== 'undefined') {
            extra.advance = advance;
            extra.scanRegExp = scanRegExp;

            advance = collectToken;
            scanRegExp = collectRegex;
        }
    }

    function unpatch() {
        if (typeof extra.scanRegExp === 'function') {
            advance = extra.advance;
            scanRegExp = extra.scanRegExp;
        }
    }

    // This is used to modify the delegate.

    function extend(object, properties) {
        var entry, result = {};

        for (entry in object) {
            /* istanbul ignore else */
            if (object.hasOwnProperty(entry)) {
                result[entry] = object[entry];
            }
        }

        for (entry in properties) {
            /* istanbul ignore else */
            if (properties.hasOwnProperty(entry)) {
                result[entry] = properties[entry];
            }
        }

        return result;
    }

    function tokenize(code, options) {
        var toString,
            token,
            tokens;

        toString = String;
        if (typeof code !== 'string' && !(code instanceof String)) {
            code = toString(code);
        }

        delegate = SyntaxTreeDelegate;
        source = code;
        index = 0;
        lineNumber = (source.length > 0) ? 1 : 0;
        lineStart = 0;
        length = source.length;
        lookahead = null;
        state = {
            allowKeyword: true,
            allowIn: true,
            labelSet: new StringMap(),
            inFunctionBody: false,
            inIteration: false,
            inSwitch: false,
            lastCommentStart: -1
        };

        extra = {};

        // Options matching.
        options = options || {};

        // Of course we collect tokens here.
        options.tokens = true;
        extra.tokens = [];
        extra.tokenize = true;
        // The following two fields are necessary to compute the Regex tokens.
        extra.openParenToken = -1;
        extra.openCurlyToken = -1;

        extra.range = (typeof options.range === 'boolean') && options.range;
        extra.loc = (typeof options.loc === 'boolean') && options.loc;

        if (typeof options.comment === 'boolean' && options.comment) {
            extra.comments = [];
        }
        if (typeof options.tolerant === 'boolean' && options.tolerant) {
            extra.errors = [];
        }

        patch();

        try {
            peek();
            if (lookahead.type === Token.EOF) {
                return extra.tokens;
            }

            token = lex();
            while (lookahead.type !== Token.EOF) {
                try {
                    token = lex();
                } catch (lexError) {
                    token = lookahead;
                    if (extra.errors) {
                        extra.errors.push(lexError);
                        // We have to break on the first error
                        // to avoid infinite loops.
                        break;
                    } else {
                        throw lexError;
                    }
                }
            }

            filterTokenLocation();
            tokens = extra.tokens;
            if (typeof extra.comments !== 'undefined') {
                tokens.comments = extra.comments;
            }
            if (typeof extra.errors !== 'undefined') {
                tokens.errors = extra.errors;
            }
        } catch (e) {
            throw e;
        } finally {
            unpatch();
            extra = {};
        }
        return tokens;
    }

    function parse(code, options) {
        var program, toString;

        toString = String;
        if (typeof code !== 'string' && !(code instanceof String)) {
            code = toString(code);
        }

        delegate = SyntaxTreeDelegate;
        source = code;
        index = 0;
        lineNumber = (source.length > 0) ? 1 : 0;
        lineStart = 0;
        length = source.length;
        lookahead = null;
        state = {
            allowKeyword: false,
            allowIn: true,
            labelSet: new StringMap(),
            parenthesizedCount: 0,
            inFunctionBody: false,
            inIteration: false,
            inSwitch: false,
            inJSXChild: false,
            inJSXTag: false,
            inType: false,
            lastCommentStart: -1,
            yieldAllowed: false,
            awaitAllowed: false
        };

        extra = {};
        if (typeof options !== 'undefined') {
            extra.range = (typeof options.range === 'boolean') && options.range;
            extra.loc = (typeof options.loc === 'boolean') && options.loc;
            extra.attachComment = (typeof options.attachComment === 'boolean') && options.attachComment;

            if (extra.loc && options.source !== null && options.source !== undefined) {
                delegate = extend(delegate, {
                    'postProcess': function (node) {
                        node.loc.source = toString(options.source);
                        return node;
                    }
                });
            }

            extra.sourceType = options.sourceType;
            if (typeof options.tokens === 'boolean' && options.tokens) {
                extra.tokens = [];
            }
            if (typeof options.comment === 'boolean' && options.comment) {
                extra.comments = [];
            }
            if (typeof options.tolerant === 'boolean' && options.tolerant) {
                extra.errors = [];
            }
            if (extra.attachComment) {
                extra.range = true;
                extra.comments = [];
                extra.bottomRightStack = [];
                extra.trailingComments = [];
                extra.leadingComments = [];
            }
        }

        patch();
        try {
            program = parseProgram();
            if (typeof extra.comments !== 'undefined') {
                program.comments = extra.comments;
            }
            if (typeof extra.tokens !== 'undefined') {
                filterTokenLocation();
                program.tokens = extra.tokens;
            }
            if (typeof extra.errors !== 'undefined') {
                program.errors = extra.errors;
            }
        } catch (e) {
            throw e;
        } finally {
            unpatch();
            extra = {};
        }

        return program;
    }

    // Sync with *.json manifests.
    exports.version = '13001.1.0-dev-harmony-fb';

    exports.tokenize = tokenize;

    exports.parse = parse;

    // Deep copy.
   /* istanbul ignore next */
    exports.Syntax = (function () {
        var name, types = {};

        if (typeof Object.create === 'function') {
            types = Object.create(null);
        }

        for (name in Syntax) {
            if (Syntax.hasOwnProperty(name)) {
                types[name] = Syntax[name];
            }
        }

        if (typeof Object.freeze === 'function') {
            Object.freeze(types);
        }

        return types;
    }());

}));
/* vim: set sw=4 ts=4 et tw=80 : */

},{}],459:[function(require,module,exports){
var assert = require("assert");
var types = require("./types");
var n = types.namedTypes;
var isArray = types.builtInTypes.array;
var isObject = types.builtInTypes.object;
var linesModule = require("./lines");
var fromString = linesModule.fromString;
var Lines = linesModule.Lines;
var concat = linesModule.concat;
var util = require("./util");
var comparePos = util.comparePos;
var childNodesCacheKey = require("private").makeUniqueKey();

// TODO Move a non-caching implementation of this function into ast-types,
// and implement a caching wrapper function here.
function getSortedChildNodes(node, resultArray) {
    if (!node) {
        return;
    }

    // The .loc checks below are sensitive to some of the problems that
    // are fixed by this utility function. Specifically, if it decides to
    // set node.loc to null, indicating that the node's .loc information
    // is unreliable, then we don't want to add node to the resultArray.
    util.fixFaultyLocations(node);

    if (resultArray) {
        if (n.Node.check(node) &&
            n.SourceLocation.check(node.loc)) {
            // This reverse insertion sort almost always takes constant
            // time because we almost always (maybe always?) append the
            // nodes in order anyway.
            for (var i = resultArray.length - 1; i >= 0; --i) {
                if (comparePos(resultArray[i].loc.end,
                               node.loc.start) <= 0) {
                    break;
                }
            }
            resultArray.splice(i + 1, 0, node);
            return;
        }
    } else if (node[childNodesCacheKey]) {
        return node[childNodesCacheKey];
    }

    var names;
    if (isArray.check(node)) {
        names = Object.keys(node);
    } else if (isObject.check(node)) {
        names = types.getFieldNames(node);
    } else {
        return;
    }

    if (!resultArray) {
        Object.defineProperty(node, childNodesCacheKey, {
            value: resultArray = [],
            enumerable: false
        });
    }

    for (var i = 0, nameCount = names.length; i < nameCount; ++i) {
        getSortedChildNodes(node[names[i]], resultArray);
    }

    return resultArray;
}

// As efficiently as possible, decorate the comment object with
// .precedingNode, .enclosingNode, and/or .followingNode properties, at
// least one of which is guaranteed to be defined.
function decorateComment(node, comment) {
    var childNodes = getSortedChildNodes(node);

    // Time to dust off the old binary search robes and wizard hat.
    var left = 0, right = childNodes.length;
    while (left < right) {
        var middle = (left + right) >> 1;
        var child = childNodes[middle];

        if (comparePos(child.loc.start, comment.loc.start) <= 0 &&
            comparePos(comment.loc.end, child.loc.end) <= 0) {
            // The comment is completely contained by this child node.
            decorateComment(comment.enclosingNode = child, comment);
            return; // Abandon the binary search at this level.
        }

        if (comparePos(child.loc.end, comment.loc.start) <= 0) {
            // This child node falls completely before the comment.
            // Because we will never consider this node or any nodes
            // before it again, this node must be the closest preceding
            // node we have encountered so far.
            var precedingNode = child;
            left = middle + 1;
            continue;
        }

        if (comparePos(comment.loc.end, child.loc.start) <= 0) {
            // This child node falls completely after the comment.
            // Because we will never consider this node or any nodes after
            // it again, this node must be the closest following node we
            // have encountered so far.
            var followingNode = child;
            right = middle;
            continue;
        }

        throw new Error("Comment location overlaps with node location");
    }

    if (precedingNode) {
        comment.precedingNode = precedingNode;
    }

    if (followingNode) {
        comment.followingNode = followingNode;
    }
}

exports.attach = function(comments, ast, lines) {
    if (!isArray.check(comments)) {
        return;
    }

    var tiesToBreak = [];

    comments.forEach(function(comment) {
        comment.loc.lines = lines;
        decorateComment(ast, comment);

        var pn = comment.precedingNode;
        var en = comment.enclosingNode;
        var fn = comment.followingNode;

        if (pn && fn) {
            var tieCount = tiesToBreak.length;
            if (tieCount > 0) {
                var lastTie = tiesToBreak[tieCount - 1];

                assert.strictEqual(
                    lastTie.precedingNode === comment.precedingNode,
                    lastTie.followingNode === comment.followingNode
                );

                if (lastTie.followingNode !== comment.followingNode) {
                    breakTies(tiesToBreak, lines);
                }
            }

            tiesToBreak.push(comment);

        } else if (pn) {
            // No contest: we have a trailing comment.
            breakTies(tiesToBreak, lines);
            addTrailingComment(pn, comment);

        } else if (fn) {
            // No contest: we have a leading comment.
            breakTies(tiesToBreak, lines);
            addLeadingComment(fn, comment);

        } else if (en) {
            // The enclosing node has no child nodes at all, so what we
            // have here is a dangling comment, e.g. [/* crickets */].
            breakTies(tiesToBreak, lines);
            addDanglingComment(en, comment);

        } else {
            throw new Error("AST contains no nodes at all?");
        }
    });

    breakTies(tiesToBreak, lines);

    comments.forEach(function(comment) {
        // These node references were useful for breaking ties, but we
        // don't need them anymore, and they create cycles in the AST that
        // may lead to infinite recursion if we don't delete them here.
        delete comment.precedingNode;
        delete comment.enclosingNode;
        delete comment.followingNode;
    });
};

function breakTies(tiesToBreak, lines) {
    var tieCount = tiesToBreak.length;
    if (tieCount === 0) {
        return;
    }

    var pn = tiesToBreak[0].precedingNode;
    var fn = tiesToBreak[0].followingNode;
    var gapEndPos = fn.loc.start;

    // Iterate backwards through tiesToBreak, examining the gaps
    // between the tied comments. In order to qualify as leading, a
    // comment must be separated from fn by an unbroken series of
    // whitespace-only gaps (or other comments).
    for (var indexOfFirstLeadingComment = tieCount;
         indexOfFirstLeadingComment > 0;
         --indexOfFirstLeadingComment) {
        var comment = tiesToBreak[indexOfFirstLeadingComment - 1];
        assert.strictEqual(comment.precedingNode, pn);
        assert.strictEqual(comment.followingNode, fn);

        var gap = lines.sliceString(comment.loc.end, gapEndPos);
        if (/\S/.test(gap)) {
            // The gap string contained something other than whitespace.
            break;
        }

        gapEndPos = comment.loc.start;
    }

    while (indexOfFirstLeadingComment <= tieCount &&
           (comment = tiesToBreak[indexOfFirstLeadingComment]) &&
           // If the comment is a //-style comment and indented more
           // deeply than the node itself, reconsider it as trailing.
           comment.type === "Line" &&
           comment.loc.start.column > fn.loc.start.column) {
        ++indexOfFirstLeadingComment;
    }

    tiesToBreak.forEach(function(comment, i) {
        if (i < indexOfFirstLeadingComment) {
            addTrailingComment(pn, comment);
        } else {
            addLeadingComment(fn, comment);
        }
    });

    tiesToBreak.length = 0;
}

function addCommentHelper(node, comment) {
    var comments = node.comments || (node.comments = []);
    comments.push(comment);
}

function addLeadingComment(node, comment) {
    comment.leading = true;
    comment.trailing = false;
    addCommentHelper(node, comment);
}

function addDanglingComment(node, comment) {
    comment.leading = false;
    comment.trailing = false;
    addCommentHelper(node, comment);
}

function addTrailingComment(node, comment) {
    comment.leading = false;
    comment.trailing = true;
    addCommentHelper(node, comment);
}

function printLeadingComment(commentPath, print) {
    var comment = commentPath.getValue();
    n.Comment.assert(comment);

    var loc = comment.loc;
    var lines = loc && loc.lines;
    var parts = [print(commentPath)];

    if (comment.trailing) {
        // When we print trailing comments as leading comments, we don't
        // want to bring any trailing spaces along.
        parts.push("\n");

    } else if (lines instanceof Lines) {
        var trailingSpace = lines.slice(
            loc.end,
            lines.skipSpaces(loc.end)
        );

        if (trailingSpace.length === 1) {
            // If the trailing space contains no newlines, then we want to
            // preserve it exactly as we found it.
            parts.push(trailingSpace);
        } else {
            // If the trailing space contains newlines, then replace it
            // with just that many newlines, with all other spaces removed.
            parts.push(new Array(trailingSpace.length).join("\n"));
        }

    } else {
        parts.push("\n");
    }

    return concat(parts);
}

function printTrailingComment(commentPath, print) {
    var comment = commentPath.getValue(commentPath);
    n.Comment.assert(comment);

    var loc = comment.loc;
    var lines = loc && loc.lines;
    var parts = [];

    if (lines instanceof Lines) {
        var fromPos = lines.skipSpaces(loc.start, true) || lines.firstPos();
        var leadingSpace = lines.slice(fromPos, loc.start);

        if (leadingSpace.length === 1) {
            // If the leading space contains no newlines, then we want to
            // preserve it exactly as we found it.
            parts.push(leadingSpace);
        } else {
            // If the leading space contains newlines, then replace it
            // with just that many newlines, sans all other spaces.
            parts.push(new Array(leadingSpace.length).join("\n"));
        }
    }

    parts.push(print(commentPath));

    return concat(parts);
}

exports.printComments = function(path, print) {
    var value = path.getValue();
    var innerLines = print(path);
    var comments = n.Node.check(value) &&
        types.getFieldValue(value, "comments");

    if (!comments || comments.length === 0) {
        return innerLines;
    }

    var leadingParts = [];
    var trailingParts = [innerLines];

    path.each(function(commentPath) {
        var comment = commentPath.getValue();
        var leading = types.getFieldValue(comment, "leading");
        var trailing = types.getFieldValue(comment, "trailing");

        if (leading || (trailing && comment.type !== "Block")) {
            leadingParts.push(printLeadingComment(commentPath, print));
        } else if (trailing) {
            assert.strictEqual(comment.type, "Block");
            trailingParts.push(printTrailingComment(commentPath, print));
        }
    }, "comments");

    leadingParts.push.apply(leadingParts, trailingParts);
    return concat(leadingParts);
};

},{"./lines":461,"./types":467,"./util":468,"assert":190,"private":435}],460:[function(require,module,exports){
var assert = require("assert");
var types = require("./types");
var n = types.namedTypes;
var Node = n.Node;
var isArray = types.builtInTypes.array;
var isNumber = types.builtInTypes.number;

function FastPath(value) {
    assert.ok(this instanceof FastPath);
    this.stack = [value];
}

var FPp = FastPath.prototype;
module.exports = FastPath;

// Static convenience function for coercing a value to a FastPath.
FastPath.from = function(obj) {
    if (obj instanceof FastPath) {
        // Return a defensive copy of any existing FastPath instances.
        return obj.copy();
    }

    if (obj instanceof types.NodePath) {
        // For backwards compatibility, unroll NodePath instances into
        // lightweight FastPath [..., name, value] stacks.
        var copy = Object.create(FastPath.prototype);
        var stack = [obj.value];
        for (var pp; (pp = obj.parentPath); obj = pp)
            stack.push(obj.name, pp.value);
        copy.stack = stack.reverse();
        return copy;
    }

    // Otherwise use obj as the value of the new FastPath instance.
    return new FastPath(obj);
};

FPp.copy = function copy() {
    var copy = Object.create(FastPath.prototype);
    copy.stack = this.stack.slice(0);
    return copy;
};

// The name of the current property is always the penultimate element of
// this.stack, and always a String.
FPp.getName = function getName() {
    var s = this.stack;
    var len = s.length;
    if (len > 1) {
        return s[len - 2];
    }
    // Since the name is always a string, null is a safe sentinel value to
    // return if we do not know the name of the (root) value.
    return null;
};

// The value of the current property is always the final element of
// this.stack.
FPp.getValue = function getValue() {
    var s = this.stack;
    return s[s.length - 1];
};

function getNodeHelper(path, count) {
    var s = path.stack;

    for (var i = s.length - 1; i >= 0; i -= 2) {
        var value = s[i];
        if (n.Node.check(value) && --count < 0) {
            return value;
        }
    }

    return null;
}

FPp.getNode = function getNode(count) {
    return getNodeHelper(this, ~~count);
};

FPp.getParentNode = function getParentNode(count) {
    return getNodeHelper(this, ~~count + 1);
};

// The length of the stack can be either even or odd, depending on whether
// or not we have a name for the root value. The difference between the
// index of the root value and the index of the final value is always
// even, though, which allows us to return the root value in constant time
// (i.e. without iterating backwards through the stack).
FPp.getRootValue = function getRootValue() {
    var s = this.stack;
    if (s.length % 2 === 0) {
        return s[1];
    }
    return s[0];
};

// Temporarily push properties named by string arguments given after the
// callback function onto this.stack, then call the callback with a
// reference to this (modified) FastPath object. Note that the stack will
// be restored to its original state after the callback is finished, so it
// is probably a mistake to retain a reference to the path.
FPp.call = function call(callback/*, name1, name2, ... */) {
    var s = this.stack;
    var origLen = s.length;
    var value = s[origLen - 1];
    var argc = arguments.length;
    for (var i = 1; i < argc; ++i) {
        var name = arguments[i];
        value = value[name];
        s.push(name, value);
    }
    var result = callback(this);
    s.length = origLen;
    return result;
};

// Similar to FastPath.prototype.call, except that the value obtained by
// accessing this.getValue()[name1][name2]... should be array-like. The
// callback will be called with a reference to this path object for each
// element of the array.
FPp.each = function each(callback/*, name1, name2, ... */) {
    var s = this.stack;
    var origLen = s.length;
    var value = s[origLen - 1];
    var argc = arguments.length;

    for (var i = 1; i < argc; ++i) {
        var name = arguments[i];
        value = value[name];
        s.push(name, value);
    }

    for (var i = 0; i < value.length; ++i) {
        if (i in value) {
            s.push(i, value[i]);
            // If the callback needs to know the value of i, call
            // path.getName(), assuming path is the parameter name.
            callback(this);
            s.length -= 2;
        }
    }

    s.length = origLen;
};

// Similar to FastPath.prototype.each, except that the results of the
// callback function invocations are stored in an array and returned at
// the end of the iteration.
FPp.map = function map(callback/*, name1, name2, ... */) {
    var s = this.stack;
    var origLen = s.length;
    var value = s[origLen - 1];
    var argc = arguments.length;

    for (var i = 1; i < argc; ++i) {
        var name = arguments[i];
        value = value[name];
        s.push(name, value);
    }

    var result = new Array(value.length);

    for (var i = 0; i < value.length; ++i) {
        if (i in value) {
            s.push(i, value[i]);
            result[i] = callback(this, i);
            s.length -= 2;
        }
    }

    s.length = origLen;

    return result;
};

// Inspired by require("ast-types").NodePath.prototype.needsParens, but
// more efficient because we're iterating backwards through a stack.
FPp.needsParens = function(assumeExpressionContext) {
    var parent = this.getParentNode();
    if (!parent) {
        return false;
    }

    var name = this.getName();
    var node = this.getNode();

    // If the value of this path is some child of a Node and not a Node
    // itself, then it doesn't need parentheses. Only Node objects (in
    // fact, only Expression nodes) need parentheses.
    if (this.getValue() !== node) {
        return false;
    }

    // Only expressions need parentheses.
    if (!n.Expression.check(node)) {
        return false;
    }

    // Identifiers never need parentheses.
    if (node.type === "Identifier") {
        return false;
    }

    switch (node.type) {
    case "UnaryExpression":
    case "SpreadElement":
    case "SpreadProperty":
        return parent.type === "MemberExpression"
            && name === "object"
            && parent.object === node;

    case "BinaryExpression":
    case "LogicalExpression":
        switch (parent.type) {
        case "CallExpression":
            return name === "callee"
                && parent.callee === node;

        case "UnaryExpression":
        case "SpreadElement":
        case "SpreadProperty":
            return true;

        case "MemberExpression":
            return name === "object"
                && parent.object === node;

        case "BinaryExpression":
        case "LogicalExpression":
            var po = parent.operator;
            var pp = PRECEDENCE[po];
            var no = node.operator;
            var np = PRECEDENCE[no];

            if (pp > np) {
                return true;
            }

            if (pp === np && name === "right") {
                assert.strictEqual(parent.right, node);
                return true;
            }

        default:
            return false;
        }

    case "SequenceExpression":
        switch (parent.type) {
        case "ForStatement":
            // Although parentheses wouldn't hurt around sequence
            // expressions in the head of for loops, traditional style
            // dictates that e.g. i++, j++ should not be wrapped with
            // parentheses.
            return false;

        case "ExpressionStatement":
            return name !== "expression";

        default:
            // Otherwise err on the side of overparenthesization, adding
            // explicit exceptions above if this proves overzealous.
            return true;
        }

    case "YieldExpression":
        switch (parent.type) {
        case "BinaryExpression":
        case "LogicalExpression":
        case "UnaryExpression":
        case "SpreadElement":
        case "SpreadProperty":
        case "CallExpression":
        case "MemberExpression":
        case "NewExpression":
        case "ConditionalExpression":
        case "YieldExpression":
            return true;

        default:
            return false;
        }

    case "Literal":
        return parent.type === "MemberExpression"
            && isNumber.check(node.value)
            && name === "object"
            && parent.object === node;

    case "AssignmentExpression":
    case "ConditionalExpression":
        switch (parent.type) {
        case "UnaryExpression":
        case "SpreadElement":
        case "SpreadProperty":
        case "BinaryExpression":
        case "LogicalExpression":
            return true;

        case "CallExpression":
            return name === "callee"
                && parent.callee === node;

        case "ConditionalExpression":
            return name === "test"
                && parent.test === node;

        case "MemberExpression":
            return name === "object"
                && parent.object === node;

        default:
            return false;
        }

    case "ArrowFunctionExpression":
        return isBinary(parent);

    case "ObjectExpression":
        if (parent.type === "ArrowFunctionExpression" &&
            name === "body") {
            return true;
        }

    default:
        if (parent.type === "NewExpression" &&
            name === "callee" &&
            parent.callee === node) {
            return containsCallExpression(node);
        }
    }

    if (assumeExpressionContext !== true &&
        !this.canBeFirstInStatement() &&
        this.firstInStatement())
        return true;

    return false;
};

function isBinary(node) {
    return n.BinaryExpression.check(node)
        || n.LogicalExpression.check(node);
}

function isUnaryLike(node) {
    return n.UnaryExpression.check(node)
        // I considered making SpreadElement and SpreadProperty subtypes
        // of UnaryExpression, but they're not really Expression nodes.
        || (n.SpreadElement && n.SpreadElement.check(node))
        || (n.SpreadProperty && n.SpreadProperty.check(node));
}

var PRECEDENCE = {};
[["||"],
 ["&&"],
 ["|"],
 ["^"],
 ["&"],
 ["==", "===", "!=", "!=="],
 ["<", ">", "<=", ">=", "in", "instanceof"],
 [">>", "<<", ">>>"],
 ["+", "-"],
 ["*", "/", "%"]
].forEach(function(tier, i) {
    tier.forEach(function(op) {
        PRECEDENCE[op] = i;
    });
});

function containsCallExpression(node) {
    if (n.CallExpression.check(node)) {
        return true;
    }

    if (isArray.check(node)) {
        return node.some(containsCallExpression);
    }

    if (n.Node.check(node)) {
        return types.someField(node, function(name, child) {
            return containsCallExpression(child);
        });
    }

    return false;
}

FPp.canBeFirstInStatement = function() {
    var node = this.getNode();
    return !n.FunctionExpression.check(node)
        && !n.ObjectExpression.check(node);
};

FPp.firstInStatement = function() {
    var s = this.stack;
    var parentName, parent;
    var childName, child;

    for (var i = s.length - 1; i >= 0; i -= 2) {
        if (n.Node.check(s[i])) {
            childName = parentName;
            child = parent;
            parentName = s[i - 1];
            parent = s[i];
        }

        if (!parent || !child) {
            continue;
        }

        if (n.BlockStatement.check(parent) &&
            parentName === "body" &&
            childName === 0) {
            assert.strictEqual(parent.body[0], child);
            return true;
        }

        if (n.ExpressionStatement.check(parent) &&
            childName === "expression") {
            assert.strictEqual(parent.expression, child);
            return true;
        }

        if (n.SequenceExpression.check(parent) &&
            parentName === "expressions" &&
            childName === 0) {
            assert.strictEqual(parent.expressions[0], child);
            continue;
        }

        if (n.CallExpression.check(parent) &&
            childName === "callee") {
            assert.strictEqual(parent.callee, child);
            continue;
        }

        if (n.MemberExpression.check(parent) &&
            childName === "object") {
            assert.strictEqual(parent.object, child);
            continue;
        }

        if (n.ConditionalExpression.check(parent) &&
            childName === "test") {
            assert.strictEqual(parent.test, child);
            continue;
        }

        if (isBinary(parent) &&
            childName === "left") {
            assert.strictEqual(parent.left, child);
            continue;
        }

        if (n.UnaryExpression.check(parent) &&
            !parent.prefix &&
            childName === "argument") {
            assert.strictEqual(parent.argument, child);
            continue;
        }

        return false;
    }

    return true;
};

},{"./types":467,"assert":190}],461:[function(require,module,exports){
var assert = require("assert");
var sourceMap = require("source-map");
var normalizeOptions = require("./options").normalize;
var secretKey = require("private").makeUniqueKey();
var types = require("./types");
var isString = types.builtInTypes.string;
var comparePos = require("./util").comparePos;
var Mapping = require("./mapping");

// Goals:
// 1. Minimize new string creation.
// 2. Keep (de)identation O(lines) time.
// 3. Permit negative indentations.
// 4. Enforce immutability.
// 5. No newline characters.

function getSecret(lines) {
    return lines[secretKey];
}

function Lines(infos, sourceFileName) {
    assert.ok(this instanceof Lines);
    assert.ok(infos.length > 0);

    if (sourceFileName) {
        isString.assert(sourceFileName);
    } else {
        sourceFileName = null;
    }

    Object.defineProperty(this, secretKey, {
        value: {
            infos: infos,
            mappings: [],
            name: sourceFileName,
            cachedSourceMap: null
        }
    });

    if (sourceFileName) {
        getSecret(this).mappings.push(new Mapping(this, {
            start: this.firstPos(),
            end: this.lastPos()
        }));
    }
}

// Exposed for instanceof checks. The fromString function should be used
// to create new Lines objects.
exports.Lines = Lines;
var Lp = Lines.prototype;

// These properties used to be assigned to each new object in the Lines
// constructor, but we can more efficiently stuff them into the secret and
// let these lazy accessors compute their values on-the-fly.
Object.defineProperties(Lp, {
    length: {
        get: function() {
            return getSecret(this).infos.length;
        }
    },

    name: {
        get: function() {
            return getSecret(this).name;
        }
    }
});

function copyLineInfo(info) {
    return {
        line: info.line,
        indent: info.indent,
        sliceStart: info.sliceStart,
        sliceEnd: info.sliceEnd
    };
}

var fromStringCache = {};
var hasOwn = fromStringCache.hasOwnProperty;
var maxCacheKeyLen = 10;

function countSpaces(spaces, tabWidth) {
    var count = 0;
    var len = spaces.length;

    for (var i = 0; i < len; ++i) {
        switch (spaces.charCodeAt(i)) {
        case 9: // '\t'
            assert.strictEqual(typeof tabWidth, "number");
            assert.ok(tabWidth > 0);

            var next = Math.ceil(count / tabWidth) * tabWidth;
            if (next === count) {
                count += tabWidth;
            } else {
                count = next;
            }

            break;

        case 11: // '\v'
        case 12: // '\f'
        case 13: // '\r'
        case 0xfeff: // zero-width non-breaking space
            // These characters contribute nothing to indentation.
            break;

        case 32: // ' '
        default: // Treat all other whitespace like ' '.
            count += 1;
            break;
        }
    }

    return count;
}
exports.countSpaces = countSpaces;

var leadingSpaceExp = /^\s*/;

/**
 * @param {Object} options - Options object that configures printing.
 */
function fromString(string, options) {
    if (string instanceof Lines)
        return string;

    string += "";

    var tabWidth = options && options.tabWidth;
    var tabless = string.indexOf("\t") < 0;
    var cacheable = !options && tabless && (string.length <= maxCacheKeyLen);

    assert.ok(tabWidth || tabless, "No tab width specified but encountered tabs in string\n" + string);

    if (cacheable && hasOwn.call(fromStringCache, string))
        return fromStringCache[string];

    var lines = new Lines(string.split("\n").map(function(line) {
        var spaces = leadingSpaceExp.exec(line)[0];
        return {
            line: line,
            indent: countSpaces(spaces, tabWidth),
            sliceStart: spaces.length,
            sliceEnd: line.length
        };
    }), normalizeOptions(options).sourceFileName);

    if (cacheable)
        fromStringCache[string] = lines;

    return lines;
}
exports.fromString = fromString;

function isOnlyWhitespace(string) {
    return !/\S/.test(string);
}

Lp.toString = function(options) {
    return this.sliceString(this.firstPos(), this.lastPos(), options);
};

Lp.getSourceMap = function(sourceMapName, sourceRoot) {
    if (!sourceMapName) {
        // Although we could make up a name or generate an anonymous
        // source map, instead we assume that any consumer who does not
        // provide a name does not actually want a source map.
        return null;
    }

    var targetLines = this;

    function updateJSON(json) {
        json = json || {};

        isString.assert(sourceMapName);
        json.file = sourceMapName;

        if (sourceRoot) {
            isString.assert(sourceRoot);
            json.sourceRoot = sourceRoot;
        }

        return json;
    }

    var secret = getSecret(targetLines);
    if (secret.cachedSourceMap) {
        // Since Lines objects are immutable, we can reuse any source map
        // that was previously generated. Nevertheless, we return a new
        // JSON object here to protect the cached source map from outside
        // modification.
        return updateJSON(secret.cachedSourceMap.toJSON());
    }

    var smg = new sourceMap.SourceMapGenerator(updateJSON());
    var sourcesToContents = {};

    secret.mappings.forEach(function(mapping) {
        var sourceCursor = mapping.sourceLines.skipSpaces(
            mapping.sourceLoc.start
        ) || mapping.sourceLines.lastPos();

        var targetCursor = targetLines.skipSpaces(
            mapping.targetLoc.start
        ) || targetLines.lastPos();

        while (comparePos(sourceCursor, mapping.sourceLoc.end) < 0 &&
               comparePos(targetCursor, mapping.targetLoc.end) < 0) {

            var sourceChar = mapping.sourceLines.charAt(sourceCursor);
            var targetChar = targetLines.charAt(targetCursor);
            assert.strictEqual(sourceChar, targetChar);

            var sourceName = mapping.sourceLines.name;

            // Add mappings one character at a time for maximum resolution.
            smg.addMapping({
                source: sourceName,
                original: { line: sourceCursor.line,
                            column: sourceCursor.column },
                generated: { line: targetCursor.line,
                             column: targetCursor.column }
            });

            if (!hasOwn.call(sourcesToContents, sourceName)) {
                var sourceContent = mapping.sourceLines.toString();
                smg.setSourceContent(sourceName, sourceContent);
                sourcesToContents[sourceName] = sourceContent;
            }

            targetLines.nextPos(targetCursor, true);
            mapping.sourceLines.nextPos(sourceCursor, true);
        }
    });

    secret.cachedSourceMap = smg;

    return smg.toJSON();
};

Lp.bootstrapCharAt = function(pos) {
    assert.strictEqual(typeof pos, "object");
    assert.strictEqual(typeof pos.line, "number");
    assert.strictEqual(typeof pos.column, "number");

    var line = pos.line,
        column = pos.column,
        strings = this.toString().split("\n"),
        string = strings[line - 1];

    if (typeof string === "undefined")
        return "";

    if (column === string.length &&
        line < strings.length)
        return "\n";

    if (column >= string.length)
        return "";

    return string.charAt(column);
};

Lp.charAt = function(pos) {
    assert.strictEqual(typeof pos, "object");
    assert.strictEqual(typeof pos.line, "number");
    assert.strictEqual(typeof pos.column, "number");

    var line = pos.line,
        column = pos.column,
        secret = getSecret(this),
        infos = secret.infos,
        info = infos[line - 1],
        c = column;

    if (typeof info === "undefined" || c < 0)
        return "";

    var indent = this.getIndentAt(line);
    if (c < indent)
        return " ";

    c += info.sliceStart - indent;

    if (c === info.sliceEnd &&
        line < this.length)
        return "\n";

    if (c >= info.sliceEnd)
        return "";

    return info.line.charAt(c);
};

Lp.stripMargin = function(width, skipFirstLine) {
    if (width === 0)
        return this;

    assert.ok(width > 0, "negative margin: " + width);

    if (skipFirstLine && this.length === 1)
        return this;

    var secret = getSecret(this);

    var lines = new Lines(secret.infos.map(function(info, i) {
        if (info.line && (i > 0 || !skipFirstLine)) {
            info = copyLineInfo(info);
            info.indent = Math.max(0, info.indent - width);
        }
        return info;
    }));

    if (secret.mappings.length > 0) {
        var newMappings = getSecret(lines).mappings;
        assert.strictEqual(newMappings.length, 0);
        secret.mappings.forEach(function(mapping) {
            newMappings.push(mapping.indent(width, skipFirstLine, true));
        });
    }

    return lines;
};

Lp.indent = function(by) {
    if (by === 0)
        return this;

    var secret = getSecret(this);

    var lines = new Lines(secret.infos.map(function(info) {
        if (info.line) {
            info = copyLineInfo(info);
            info.indent += by;
        }
        return info
    }));

    if (secret.mappings.length > 0) {
        var newMappings = getSecret(lines).mappings;
        assert.strictEqual(newMappings.length, 0);
        secret.mappings.forEach(function(mapping) {
            newMappings.push(mapping.indent(by));
        });
    }

    return lines;
};

Lp.indentTail = function(by) {
    if (by === 0)
        return this;

    if (this.length < 2)
        return this;

    var secret = getSecret(this);

    var lines = new Lines(secret.infos.map(function(info, i) {
        if (i > 0 && info.line) {
            info = copyLineInfo(info);
            info.indent += by;
        }

        return info;
    }));

    if (secret.mappings.length > 0) {
        var newMappings = getSecret(lines).mappings;
        assert.strictEqual(newMappings.length, 0);
        secret.mappings.forEach(function(mapping) {
            newMappings.push(mapping.indent(by, true));
        });
    }

    return lines;
};

Lp.getIndentAt = function(line) {
    assert.ok(line >= 1, "no line " + line + " (line numbers start from 1)");
    var secret = getSecret(this),
        info = secret.infos[line - 1];
    return Math.max(info.indent, 0);
};

Lp.guessTabWidth = function() {
    var secret = getSecret(this);
    if (hasOwn.call(secret, "cachedTabWidth")) {
        return secret.cachedTabWidth;
    }

    var counts = []; // Sparse array.
    var lastIndent = 0;

    for (var line = 1, last = this.length; line <= last; ++line) {
        var info = secret.infos[line - 1];
        var sliced = info.line.slice(info.sliceStart, info.sliceEnd);

        // Whitespace-only lines don't tell us much about the likely tab
        // width of this code.
        if (isOnlyWhitespace(sliced)) {
            continue;
        }

        var diff = Math.abs(info.indent - lastIndent);
        counts[diff] = ~~counts[diff] + 1;
        lastIndent = info.indent;
    }

    var maxCount = -1;
    var result = 2;

    for (var tabWidth = 1;
         tabWidth < counts.length;
         tabWidth += 1) {
        if (hasOwn.call(counts, tabWidth) &&
            counts[tabWidth] > maxCount) {
            maxCount = counts[tabWidth];
            result = tabWidth;
        }
    }

    return secret.cachedTabWidth = result;
};

Lp.isOnlyWhitespace = function() {
    return isOnlyWhitespace(this.toString());
};

Lp.isPrecededOnlyByWhitespace = function(pos) {
    var secret = getSecret(this);
    var info = secret.infos[pos.line - 1];
    var indent = Math.max(info.indent, 0);

    var diff = pos.column - indent;
    if (diff <= 0) {
        // If pos.column does not exceed the indentation amount, then
        // there must be only whitespace before it.
        return true;
    }

    var start = info.sliceStart;
    var end = Math.min(start + diff, info.sliceEnd);
    var prefix = info.line.slice(start, end);

    return isOnlyWhitespace(prefix);
};

Lp.getLineLength = function(line) {
    var secret = getSecret(this),
        info = secret.infos[line - 1];
    return this.getIndentAt(line) + info.sliceEnd - info.sliceStart;
};

Lp.nextPos = function(pos, skipSpaces) {
    var l = Math.max(pos.line, 0),
        c = Math.max(pos.column, 0);

    if (c < this.getLineLength(l)) {
        pos.column += 1;

        return skipSpaces
            ? !!this.skipSpaces(pos, false, true)
            : true;
    }

    if (l < this.length) {
        pos.line += 1;
        pos.column = 0;

        return skipSpaces
            ? !!this.skipSpaces(pos, false, true)
            : true;
    }

    return false;
};

Lp.prevPos = function(pos, skipSpaces) {
    var l = pos.line,
        c = pos.column;

    if (c < 1) {
        l -= 1;

        if (l < 1)
            return false;

        c = this.getLineLength(l);

    } else {
        c = Math.min(c - 1, this.getLineLength(l));
    }

    pos.line = l;
    pos.column = c;

    return skipSpaces
        ? !!this.skipSpaces(pos, true, true)
        : true;
};

Lp.firstPos = function() {
    // Trivial, but provided for completeness.
    return { line: 1, column: 0 };
};

Lp.lastPos = function() {
    return {
        line: this.length,
        column: this.getLineLength(this.length)
    };
};

Lp.skipSpaces = function(pos, backward, modifyInPlace) {
    if (pos) {
        pos = modifyInPlace ? pos : {
            line: pos.line,
            column: pos.column
        };
    } else if (backward) {
        pos = this.lastPos();
    } else {
        pos = this.firstPos();
    }

    if (backward) {
        while (this.prevPos(pos)) {
            if (!isOnlyWhitespace(this.charAt(pos)) &&
                this.nextPos(pos)) {
                return pos;
            }
        }

        return null;

    } else {
        while (isOnlyWhitespace(this.charAt(pos))) {
            if (!this.nextPos(pos)) {
                return null;
            }
        }

        return pos;
    }
};

Lp.trimLeft = function() {
    var pos = this.skipSpaces(this.firstPos(), false, true);
    return pos ? this.slice(pos) : emptyLines;
};

Lp.trimRight = function() {
    var pos = this.skipSpaces(this.lastPos(), true, true);
    return pos ? this.slice(this.firstPos(), pos) : emptyLines;
};

Lp.trim = function() {
    var start = this.skipSpaces(this.firstPos(), false, true);
    if (start === null)
        return emptyLines;

    var end = this.skipSpaces(this.lastPos(), true, true);
    assert.notStrictEqual(end, null);

    return this.slice(start, end);
};

Lp.eachPos = function(callback, startPos, skipSpaces) {
    var pos = this.firstPos();

    if (startPos) {
        pos.line = startPos.line,
        pos.column = startPos.column
    }

    if (skipSpaces && !this.skipSpaces(pos, false, true)) {
        return; // Encountered nothing but spaces.
    }

    do callback.call(this, pos);
    while (this.nextPos(pos, skipSpaces));
};

Lp.bootstrapSlice = function(start, end) {
    var strings = this.toString().split("\n").slice(
            start.line - 1, end.line);

    strings.push(strings.pop().slice(0, end.column));
    strings[0] = strings[0].slice(start.column);

    return fromString(strings.join("\n"));
};

Lp.slice = function(start, end) {
    if (!end) {
        if (!start) {
            // The client seems to want a copy of this Lines object, but
            // Lines objects are immutable, so it's perfectly adequate to
            // return the same object.
            return this;
        }

        // Slice to the end if no end position was provided.
        end = this.lastPos();
    }

    var secret = getSecret(this);
    var sliced = secret.infos.slice(start.line - 1, end.line);

    if (start.line === end.line) {
        sliced[0] = sliceInfo(sliced[0], start.column, end.column);
    } else {
        assert.ok(start.line < end.line);
        sliced[0] = sliceInfo(sliced[0], start.column);
        sliced.push(sliceInfo(sliced.pop(), 0, end.column));
    }

    var lines = new Lines(sliced);

    if (secret.mappings.length > 0) {
        var newMappings = getSecret(lines).mappings;
        assert.strictEqual(newMappings.length, 0);
        secret.mappings.forEach(function(mapping) {
            var sliced = mapping.slice(this, start, end);
            if (sliced) {
                newMappings.push(sliced);
            }
        }, this);
    }

    return lines;
};

function sliceInfo(info, startCol, endCol) {
    var sliceStart = info.sliceStart;
    var sliceEnd = info.sliceEnd;
    var indent = Math.max(info.indent, 0);
    var lineLength = indent + sliceEnd - sliceStart;

    if (typeof endCol === "undefined") {
        endCol = lineLength;
    }

    startCol = Math.max(startCol, 0);
    endCol = Math.min(endCol, lineLength);
    endCol = Math.max(endCol, startCol);

    if (endCol < indent) {
        indent = endCol;
        sliceEnd = sliceStart;
    } else {
        sliceEnd -= lineLength - endCol;
    }

    lineLength = endCol;
    lineLength -= startCol;

    if (startCol < indent) {
        indent -= startCol;
    } else {
        startCol -= indent;
        indent = 0;
        sliceStart += startCol;
    }

    assert.ok(indent >= 0);
    assert.ok(sliceStart <= sliceEnd);
    assert.strictEqual(lineLength, indent + sliceEnd - sliceStart);

    if (info.indent === indent &&
        info.sliceStart === sliceStart &&
        info.sliceEnd === sliceEnd) {
        return info;
    }

    return {
        line: info.line,
        indent: indent,
        sliceStart: sliceStart,
        sliceEnd: sliceEnd
    };
}

Lp.bootstrapSliceString = function(start, end, options) {
    return this.slice(start, end).toString(options);
};

Lp.sliceString = function(start, end, options) {
    if (!end) {
        if (!start) {
            // The client seems to want a copy of this Lines object, but
            // Lines objects are immutable, so it's perfectly adequate to
            // return the same object.
            return this;
        }

        // Slice to the end if no end position was provided.
        end = this.lastPos();
    }

    options = normalizeOptions(options);

    var infos = getSecret(this).infos;
    var parts = [];
    var tabWidth = options.tabWidth;

    for (var line = start.line; line <= end.line; ++line) {
        var info = infos[line - 1];

        if (line === start.line) {
            if (line === end.line) {
                info = sliceInfo(info, start.column, end.column);
            } else {
                info = sliceInfo(info, start.column);
            }
        } else if (line === end.line) {
            info = sliceInfo(info, 0, end.column);
        }

        var indent = Math.max(info.indent, 0);

        var before = info.line.slice(0, info.sliceStart);
        if (options.reuseWhitespace &&
            isOnlyWhitespace(before) &&
            countSpaces(before, options.tabWidth) === indent) {
            // Reuse original spaces if the indentation is correct.
            parts.push(info.line.slice(0, info.sliceEnd));
            continue;
        }

        var tabs = 0;
        var spaces = indent;

        if (options.useTabs) {
            tabs = Math.floor(indent / tabWidth);
            spaces -= tabs * tabWidth;
        }

        var result = "";

        if (tabs > 0) {
            result += new Array(tabs + 1).join("\t");
        }

        if (spaces > 0) {
            result += new Array(spaces + 1).join(" ");
        }

        result += info.line.slice(info.sliceStart, info.sliceEnd);

        parts.push(result);
    }

    return parts.join("\n");
};

Lp.isEmpty = function() {
    return this.length < 2 && this.getLineLength(1) < 1;
};

Lp.join = function(elements) {
    var separator = this;
    var separatorSecret = getSecret(separator);
    var infos = [];
    var mappings = [];
    var prevInfo;

    function appendSecret(secret) {
        if (secret === null)
            return;

        if (prevInfo) {
            var info = secret.infos[0];
            var indent = new Array(info.indent + 1).join(" ");
            var prevLine = infos.length;
            var prevColumn = Math.max(prevInfo.indent, 0) +
                prevInfo.sliceEnd - prevInfo.sliceStart;

            prevInfo.line = prevInfo.line.slice(
                0, prevInfo.sliceEnd) + indent + info.line.slice(
                    info.sliceStart, info.sliceEnd);

            prevInfo.sliceEnd = prevInfo.line.length;

            if (secret.mappings.length > 0) {
                secret.mappings.forEach(function(mapping) {
                    mappings.push(mapping.add(prevLine, prevColumn));
                });
            }

        } else if (secret.mappings.length > 0) {
            mappings.push.apply(mappings, secret.mappings);
        }

        secret.infos.forEach(function(info, i) {
            if (!prevInfo || i > 0) {
                prevInfo = copyLineInfo(info);
                infos.push(prevInfo);
            }
        });
    }

    function appendWithSeparator(secret, i) {
        if (i > 0)
            appendSecret(separatorSecret);
        appendSecret(secret);
    }

    elements.map(function(elem) {
        var lines = fromString(elem);
        if (lines.isEmpty())
            return null;
        return getSecret(lines);
    }).forEach(separator.isEmpty()
               ? appendSecret
               : appendWithSeparator);

    if (infos.length < 1)
        return emptyLines;

    var lines = new Lines(infos);

    getSecret(lines).mappings = mappings;

    return lines;
};

exports.concat = function(elements) {
    return emptyLines.join(elements);
};

Lp.concat = function(other) {
    var args = arguments,
        list = [this];
    list.push.apply(list, args);
    assert.strictEqual(list.length, args.length + 1);
    return emptyLines.join(list);
};

// The emptyLines object needs to be created all the way down here so that
// Lines.prototype will be fully populated.
var emptyLines = fromString("");

},{"./mapping":462,"./options":463,"./types":467,"./util":468,"assert":190,"private":435,"source-map":483}],462:[function(require,module,exports){
var assert = require("assert");
var types = require("./types");
var isString = types.builtInTypes.string;
var isNumber = types.builtInTypes.number;
var SourceLocation = types.namedTypes.SourceLocation;
var Position = types.namedTypes.Position;
var linesModule = require("./lines");
var comparePos = require("./util").comparePos;

function Mapping(sourceLines, sourceLoc, targetLoc) {
    assert.ok(this instanceof Mapping);
    assert.ok(sourceLines instanceof linesModule.Lines);
    SourceLocation.assert(sourceLoc);

    if (targetLoc) {
        // In certain cases it's possible for targetLoc.{start,end}.column
        // values to be negative, which technically makes them no longer
        // valid SourceLocation nodes, so we need to be more forgiving.
        assert.ok(
            isNumber.check(targetLoc.start.line) &&
            isNumber.check(targetLoc.start.column) &&
            isNumber.check(targetLoc.end.line) &&
            isNumber.check(targetLoc.end.column)
        );
    } else {
        // Assume identity mapping if no targetLoc specified.
        targetLoc = sourceLoc;
    }

    Object.defineProperties(this, {
        sourceLines: { value: sourceLines },
        sourceLoc: { value: sourceLoc },
        targetLoc: { value: targetLoc }
    });
}

var Mp = Mapping.prototype;
module.exports = Mapping;

Mp.slice = function(lines, start, end) {
    assert.ok(lines instanceof linesModule.Lines);
    Position.assert(start);

    if (end) {
        Position.assert(end);
    } else {
        end = lines.lastPos();
    }

    var sourceLines = this.sourceLines;
    var sourceLoc = this.sourceLoc;
    var targetLoc = this.targetLoc;

    function skip(name) {
        var sourceFromPos = sourceLoc[name];
        var targetFromPos = targetLoc[name];
        var targetToPos = start;

        if (name === "end") {
            targetToPos = end;
        } else {
            assert.strictEqual(name, "start");
        }

        return skipChars(
            sourceLines, sourceFromPos,
            lines, targetFromPos, targetToPos
        );
    }

    if (comparePos(start, targetLoc.start) <= 0) {
        if (comparePos(targetLoc.end, end) <= 0) {
            targetLoc = {
                start: subtractPos(targetLoc.start, start.line, start.column),
                end: subtractPos(targetLoc.end, start.line, start.column)
            };

            // The sourceLoc can stay the same because the contents of the
            // targetLoc have not changed.

        } else if (comparePos(end, targetLoc.start) <= 0) {
            return null;

        } else {
            sourceLoc = {
                start: sourceLoc.start,
                end: skip("end")
            };

            targetLoc = {
                start: subtractPos(targetLoc.start, start.line, start.column),
                end: subtractPos(end, start.line, start.column)
            };
        }

    } else {
        if (comparePos(targetLoc.end, start) <= 0) {
            return null;
        }

        if (comparePos(targetLoc.end, end) <= 0) {
            sourceLoc = {
                start: skip("start"),
                end: sourceLoc.end
            };

            targetLoc = {
                // Same as subtractPos(start, start.line, start.column):
                start: { line: 1, column: 0 },
                end: subtractPos(targetLoc.end, start.line, start.column)
            };

        } else {
            sourceLoc = {
                start: skip("start"),
                end: skip("end")
            };

            targetLoc = {
                // Same as subtractPos(start, start.line, start.column):
                start: { line: 1, column: 0 },
                end: subtractPos(end, start.line, start.column)
            };
        }
    }

    return new Mapping(this.sourceLines, sourceLoc, targetLoc);
};

Mp.add = function(line, column) {
    return new Mapping(this.sourceLines, this.sourceLoc, {
        start: addPos(this.targetLoc.start, line, column),
        end: addPos(this.targetLoc.end, line, column)
    });
};

function addPos(toPos, line, column) {
    return {
        line: toPos.line + line - 1,
        column: (toPos.line === 1)
            ? toPos.column + column
            : toPos.column
    };
}

Mp.subtract = function(line, column) {
    return new Mapping(this.sourceLines, this.sourceLoc, {
        start: subtractPos(this.targetLoc.start, line, column),
        end: subtractPos(this.targetLoc.end, line, column)
    });
};

function subtractPos(fromPos, line, column) {
    return {
        line: fromPos.line - line + 1,
        column: (fromPos.line === line)
            ? fromPos.column - column
            : fromPos.column
    };
}

Mp.indent = function(by, skipFirstLine, noNegativeColumns) {
    if (by === 0) {
        return this;
    }

    var targetLoc = this.targetLoc;
    var startLine = targetLoc.start.line;
    var endLine = targetLoc.end.line;

    if (skipFirstLine && startLine === 1 && endLine === 1) {
        return this;
    }

    targetLoc = {
        start: targetLoc.start,
        end: targetLoc.end
    };

    if (!skipFirstLine || startLine > 1) {
        var startColumn = targetLoc.start.column + by;
        targetLoc.start = {
            line: startLine,
            column: noNegativeColumns
                ? Math.max(0, startColumn)
                : startColumn
        };
    }

    if (!skipFirstLine || endLine > 1) {
        var endColumn = targetLoc.end.column + by;
        targetLoc.end = {
            line: endLine,
            column: noNegativeColumns
                ? Math.max(0, endColumn)
                : endColumn
        };
    }

    return new Mapping(this.sourceLines, this.sourceLoc, targetLoc);
};

function skipChars(
    sourceLines, sourceFromPos,
    targetLines, targetFromPos, targetToPos
) {
    assert.ok(sourceLines instanceof linesModule.Lines);
    assert.ok(targetLines instanceof linesModule.Lines);
    Position.assert(sourceFromPos);
    Position.assert(targetFromPos);
    Position.assert(targetToPos);

    var targetComparison = comparePos(targetFromPos, targetToPos);
    if (targetComparison === 0) {
        // Trivial case: no characters to skip.
        return sourceFromPos;
    }

    if (targetComparison < 0) {
        // Skipping forward.

        var sourceCursor = sourceLines.skipSpaces(sourceFromPos);
        var targetCursor = targetLines.skipSpaces(targetFromPos);

        var lineDiff = targetToPos.line - targetCursor.line;
        sourceCursor.line += lineDiff;
        targetCursor.line += lineDiff;

        if (lineDiff > 0) {
            // If jumping to later lines, reset columns to the beginnings
            // of those lines.
            sourceCursor.column = 0;
            targetCursor.column = 0;
        } else {
            assert.strictEqual(lineDiff, 0);
        }

        while (comparePos(targetCursor, targetToPos) < 0 &&
               targetLines.nextPos(targetCursor, true)) {
            assert.ok(sourceLines.nextPos(sourceCursor, true));
            assert.strictEqual(
                sourceLines.charAt(sourceCursor),
                targetLines.charAt(targetCursor)
            );
        }

    } else {
        // Skipping backward.

        var sourceCursor = sourceLines.skipSpaces(sourceFromPos, true);
        var targetCursor = targetLines.skipSpaces(targetFromPos, true);

        var lineDiff = targetToPos.line - targetCursor.line;
        sourceCursor.line += lineDiff;
        targetCursor.line += lineDiff;

        if (lineDiff < 0) {
            // If jumping to earlier lines, reset columns to the ends of
            // those lines.
            sourceCursor.column = sourceLines.getLineLength(sourceCursor.line);
            targetCursor.column = targetLines.getLineLength(targetCursor.line);
        } else {
            assert.strictEqual(lineDiff, 0);
        }

        while (comparePos(targetToPos, targetCursor) < 0 &&
               targetLines.prevPos(targetCursor, true)) {
            assert.ok(sourceLines.prevPos(sourceCursor, true));
            assert.strictEqual(
                sourceLines.charAt(sourceCursor),
                targetLines.charAt(targetCursor)
            );
        }
    }

    return sourceCursor;
}

},{"./lines":461,"./types":467,"./util":468,"assert":190}],463:[function(require,module,exports){
var defaults = {
    // If you want to use a different branch of esprima, or any other
    // module that supports a .parse function, pass that module object to
    // recast.parse as options.esprima.
    esprima: require("esprima-fb"),

    // Number of spaces the pretty-printer should use per tab for
    // indentation. If you do not pass this option explicitly, it will be
    // (quite reliably!) inferred from the original code.
    tabWidth: 4,

    // If you really want the pretty-printer to use tabs instead of
    // spaces, make this option true.
    useTabs: false,

    // The reprinting code leaves leading whitespace untouched unless it
    // has to reindent a line, or you pass false for this option.
    reuseWhitespace: true,

    // Some of the pretty-printer code (such as that for printing function
    // parameter lists) makes a valiant attempt to prevent really long
    // lines. You can adjust the limit by changing this option; however,
    // there is no guarantee that line length will fit inside this limit.
    wrapColumn: 74, // Aspirational for now.

    // Pass a string as options.sourceFileName to recast.parse to tell the
    // reprinter to keep track of reused code so that it can construct a
    // source map automatically.
    sourceFileName: null,

    // Pass a string as options.sourceMapName to recast.print, and
    // (provided you passed options.sourceFileName earlier) the
    // PrintResult of recast.print will have a .map property for the
    // generated source map.
    sourceMapName: null,

    // If provided, this option will be passed along to the source map
    // generator as a root directory for relative source file paths.
    sourceRoot: null,

    // If you provide a source map that was generated from a previous call
    // to recast.print as options.inputSourceMap, the old source map will
    // be composed with the new source map.
    inputSourceMap: null,

    // If you want esprima to generate .range information (recast only
    // uses .loc internally), pass true for this option.
    range: false,

    // If you want esprima not to throw exceptions when it encounters
    // non-fatal errors, keep this option true.
    tolerant: true,
    
    // If you want to override the quotes used in string literals, specify
    // either "single", "double", or "auto" here ("auto" will select the one 
    // which results in the shorter literal)
    // Otherwise, the input marks will be preserved
    quote: null,
}, hasOwn = defaults.hasOwnProperty;

// Copy options and fill in default values.
exports.normalize = function(options) {
    options = options || defaults;

    function get(key) {
        return hasOwn.call(options, key)
            ? options[key]
            : defaults[key];
    }

    return {
        tabWidth: +get("tabWidth"),
        useTabs: !!get("useTabs"),
        reuseWhitespace: !!get("reuseWhitespace"),
        wrapColumn: Math.max(get("wrapColumn"), 0),
        sourceFileName: get("sourceFileName"),
        sourceMapName: get("sourceMapName"),
        sourceRoot: get("sourceRoot"),
        inputSourceMap: get("inputSourceMap"),
        esprima: get("esprima"),
        range: get("range"),
        tolerant: get("tolerant"),
        quote: get("quote"),
    };
};

},{"esprima-fb":470}],464:[function(require,module,exports){
var assert = require("assert");
var types = require("./types");
var n = types.namedTypes;
var b = types.builders;
var isObject = types.builtInTypes.object;
var isArray = types.builtInTypes.array;
var isFunction = types.builtInTypes.function;
var Patcher = require("./patcher").Patcher;
var normalizeOptions = require("./options").normalize;
var fromString = require("./lines").fromString;
var attachComments = require("./comments").attach;
var util = require("./util");

exports.parse = function parse(source, options) {
    options = normalizeOptions(options);

    var lines = fromString(source, options);

    var sourceWithoutTabs = lines.toString({
        tabWidth: options.tabWidth,
        reuseWhitespace: false,
        useTabs: false
    });

    var program = options.esprima.parse(sourceWithoutTabs, {
        loc: true,
        range: options.range,
        comment: true,
        tolerant: options.tolerant,
        sourceType: 'module'
    });

    // Expand the Program node's .loc to include all comments, since
    // typically its .loc.start and .loc.end will coincide with those of
    // the first and last statements, respectively, excluding any comments
    // that fall outside that region.
    program.loc = util.getTrueLoc(program);

    var comments = program.comments;
    delete program.comments;

    // In order to ensure we reprint leading and trailing program
    // comments, wrap the original Program node with a File node.
    var file = b.file(program);
    file.loc = {
        lines: lines,
        indent: 0,
        start: lines.firstPos(),
        end: lines.lastPos()
    };

    // Passing file.program here instead of just file means that initial
    // comments will be attached to program.body[0] instead of program.
    attachComments(
        comments,
        program.body.length ? file.program : file,
        lines
    );

    // Return a copy of the original AST so that any changes made may be
    // compared to the original.
    return new TreeCopier(lines).copy(file);
};

function TreeCopier(lines) {
    assert.ok(this instanceof TreeCopier);
    this.lines = lines;
    this.indent = 0;
}

var TCp = TreeCopier.prototype;

TCp.copy = function(node) {
    if (isArray.check(node)) {
        return node.map(this.copy, this);
    }

    if (!isObject.check(node)) {
        return node;
    }

    util.fixFaultyLocations(node);

    var copy = Object.create(Object.getPrototypeOf(node), {
        original: { // Provide a link from the copy to the original.
            value: node,
            configurable: false,
            enumerable: false,
            writable: true
        }
    });

    var loc = node.loc;
    var oldIndent = this.indent;
    var newIndent = oldIndent;

    if (loc) {
        // When node is a comment, we set node.loc.indent to
        // node.loc.start.column so that, when/if we print the comment by
        // itself, we can strip that much whitespace from the left margin
        // of the comment. This only really matters for multiline Block
        // comments, but it doesn't hurt for Line comments.
        if (node.type === "Block" || node.type === "Line" ||
            this.lines.isPrecededOnlyByWhitespace(loc.start)) {
            newIndent = this.indent = loc.start.column;
        }

        loc.lines = this.lines;
        loc.indent = newIndent;
    }

    var keys = Object.keys(node);
    var keyCount = keys.length;
    for (var i = 0; i < keyCount; ++i) {
        var key = keys[i];
        if (key === "loc") {
            copy[key] = node[key];
        } else {
            copy[key] = this.copy(node[key]);
        }
    }

    this.indent = oldIndent;

    return copy;
};

},{"./comments":459,"./lines":461,"./options":463,"./patcher":465,"./types":467,"./util":468,"assert":190}],465:[function(require,module,exports){
var assert = require("assert");
var linesModule = require("./lines");
var types = require("./types");
var getFieldValue = types.getFieldValue;
var Printable = types.namedTypes.Printable;
var Expression = types.namedTypes.Expression;
var SourceLocation = types.namedTypes.SourceLocation;
var util = require("./util");
var comparePos = util.comparePos;
var FastPath = require("./fast-path");
var isObject = types.builtInTypes.object;
var isArray = types.builtInTypes.array;
var isString = types.builtInTypes.string;
var riskyAdjoiningCharExp = /[0-9a-z_$]/i;

function Patcher(lines) {
    assert.ok(this instanceof Patcher);
    assert.ok(lines instanceof linesModule.Lines);

    var self = this,
        replacements = [];

    self.replace = function(loc, lines) {
        if (isString.check(lines))
            lines = linesModule.fromString(lines);

        replacements.push({
            lines: lines,
            start: loc.start,
            end: loc.end
        });
    };

    self.get = function(loc) {
        // If no location is provided, return the complete Lines object.
        loc = loc || {
            start: { line: 1, column: 0 },
            end: { line: lines.length,
                   column: lines.getLineLength(lines.length) }
        };

        var sliceFrom = loc.start,
            toConcat = [];

        function pushSlice(from, to) {
            assert.ok(comparePos(from, to) <= 0);
            toConcat.push(lines.slice(from, to));
        }

        replacements.sort(function(a, b) {
            return comparePos(a.start, b.start);
        }).forEach(function(rep) {
            if (comparePos(sliceFrom, rep.start) > 0) {
                // Ignore nested replacement ranges.
            } else {
                pushSlice(sliceFrom, rep.start);
                toConcat.push(rep.lines);
                sliceFrom = rep.end;
            }
        });

        pushSlice(sliceFrom, loc.end);

        return linesModule.concat(toConcat);
    };
}
exports.Patcher = Patcher;

var Pp = Patcher.prototype;

Pp.tryToReprintComments = function(newNode, oldNode, print) {
    var patcher = this;

    if (!newNode.comments &&
        !oldNode.comments) {
        // We were (vacuously) able to reprint all the comments!
        return true;
    }

    var newPath = FastPath.from(newNode);
    var oldPath = FastPath.from(oldNode);

    newPath.stack.push("comments", getSurroundingComments(newNode));
    oldPath.stack.push("comments", getSurroundingComments(oldNode));

    var reprints = [];
    var ableToReprintComments =
        findArrayReprints(newPath, oldPath, reprints);

    // No need to pop anything from newPath.stack or oldPath.stack, since
    // newPath and oldPath are fresh local variables.

    if (ableToReprintComments && reprints.length > 0) {
        reprints.forEach(function(reprint) {
            var oldComment = reprint.oldPath.getValue();
            assert.ok(oldComment.leading || oldComment.trailing);
            patcher.replace(
                oldComment.loc,
                // Comments can't have .comments, so it doesn't matter
                // whether we print with comments or without.
                print(reprint.newPath).indentTail(oldComment.loc.indent)
            );
        });
    }

    return ableToReprintComments;
};

// Get all comments that are either leading or trailing, ignoring any
// comments that occur inside node.loc. Returns an empty array for nodes
// with no leading or trailing comments.
function getSurroundingComments(node) {
    var result = [];
    if (node.comments &&
        node.comments.length > 0) {
        node.comments.forEach(function(comment) {
            if (comment.leading || comment.trailing) {
                result.push(comment);
            }
        });
    }
    return result;
}

Pp.deleteComments = function(node) {
    if (!node.comments) {
        return;
    }

    var patcher = this;

    node.comments.forEach(function(comment) {
        if (comment.leading) {
            // Delete leading comments along with any trailing whitespace
            // they might have.
            patcher.replace({
                start: comment.loc.start,
                end: node.loc.lines.skipSpaces(
                    comment.loc.end, false, false)
            }, "");

        } else if (comment.trailing) {
            // Delete trailing comments along with any leading whitespace
            // they might have.
            patcher.replace({
                start: node.loc.lines.skipSpaces(
                    comment.loc.start, true, false),
                end: comment.loc.end
            }, "");
        }
    });
};

exports.getReprinter = function(path) {
    assert.ok(path instanceof FastPath);

    // Make sure that this path refers specifically to a Node, rather than
    // some non-Node subproperty of a Node.
    var node = path.getValue();
    if (!Printable.check(node))
        return;

    var orig = node.original;
    var origLoc = orig && orig.loc;
    var lines = origLoc && origLoc.lines;
    var reprints = [];

    if (!lines || !findReprints(path, reprints))
        return;

    return function(print) {
        var patcher = new Patcher(lines);

        reprints.forEach(function(reprint) {
            var newNode = reprint.newPath.getValue();
            var oldNode = reprint.oldPath.getValue();

            SourceLocation.assert(oldNode.loc, true);

            var needToPrintNewPathWithComments =
                !patcher.tryToReprintComments(newNode, oldNode, print)

            if (needToPrintNewPathWithComments) {
                // Since we were not able to preserve all leading/trailing
                // comments, we delete oldNode's comments, print newPath
                // with comments, and then patch the resulting lines where
                // oldNode used to be.
                patcher.deleteComments(oldNode);
            }

            var pos = util.copyPos(oldNode.loc.start);
            var needsLeadingSpace = lines.prevPos(pos) &&
                riskyAdjoiningCharExp.test(lines.charAt(pos));

            var newLines = print(
                reprint.newPath,
                needToPrintNewPathWithComments
            ).indentTail(oldNode.loc.indent);

            var needsTrailingSpace =
                riskyAdjoiningCharExp.test(lines.charAt(oldNode.loc.end));

            // If we try to replace the argument of a ReturnStatement like
            // return"asdf" with e.g. a literal null expression, we run
            // the risk of ending up with returnnull, so we need to add an
            // extra leading space in situations where that might
            // happen. Likewise for "asdf"in obj. See #170.
            if (needsLeadingSpace || needsTrailingSpace) {
                var newParts = [];
                needsLeadingSpace && newParts.push(" ");
                newParts.push(newLines);
                needsTrailingSpace && newParts.push(" ");
                newLines = linesModule.concat(newParts);
            }

            patcher.replace(oldNode.loc, newLines);
        });

        // Recall that origLoc is the .loc of an ancestor node that is
        // guaranteed to contain all the reprinted nodes and comments.
        return patcher.get(origLoc).indentTail(-orig.loc.indent);
    };
};

function findReprints(newPath, reprints) {
    var newNode = newPath.getValue();
    Printable.assert(newNode);

    var oldNode = newNode.original;
    Printable.assert(oldNode);

    assert.deepEqual(reprints, []);

    if (newNode.type !== oldNode.type) {
        return false;
    }

    var oldPath = new FastPath(oldNode);
    var canReprint = findChildReprints(newPath, oldPath, reprints);

    if (!canReprint) {
        // Make absolutely sure the calling code does not attempt to reprint
        // any nodes.
        reprints.length = 0;
    }

    return canReprint;
}

function findAnyReprints(newPath, oldPath, reprints) {
    var newNode = newPath.getValue();
    var oldNode = oldPath.getValue();

    if (newNode === oldNode)
        return true;

    if (isArray.check(newNode))
        return findArrayReprints(newPath, oldPath, reprints);

    if (isObject.check(newNode))
        return findObjectReprints(newPath, oldPath, reprints);

    return false;
}

function findArrayReprints(newPath, oldPath, reprints) {
    var newNode = newPath.getValue();
    var oldNode = oldPath.getValue();
    isArray.assert(newNode);
    var len = newNode.length;

    if (!(isArray.check(oldNode) &&
          oldNode.length === len))
        return false;

    for (var i = 0; i < len; ++i) {
        newPath.stack.push(i, newNode[i]);
        oldPath.stack.push(i, oldNode[i]);
        var canReprint = findAnyReprints(newPath, oldPath, reprints);
        newPath.stack.length -= 2;
        oldPath.stack.length -= 2;
        if (!canReprint) {
            return false;
        }
    }

    return true;
}

function findObjectReprints(newPath, oldPath, reprints) {
    var newNode = newPath.getValue();
    isObject.assert(newNode);

    if (newNode.original === null) {
        // If newNode.original node was set to null, reprint the node.
        return false;
    }

    var oldNode = oldPath.getValue();
    if (!isObject.check(oldNode))
        return false;

    if (Printable.check(newNode)) {
        if (!Printable.check(oldNode)) {
            return false;
        }

        // Here we need to decide whether the reprinted code for newNode
        // is appropriate for patching into the location of oldNode.

        if (newNode.type === oldNode.type) {
            var childReprints = [];

            if (findChildReprints(newPath, oldPath, childReprints)) {
                reprints.push.apply(reprints, childReprints);
            } else if (oldNode.loc) {
                // If we have no .loc information for oldNode, then we
                // won't be able to reprint it.
                reprints.push({
                    oldPath: oldPath.copy(),
                    newPath: newPath.copy()
                });
            } else {
                return false;
            }

            return true;
        }

        if (Expression.check(newNode) &&
            Expression.check(oldNode) &&
            // If we have no .loc information for oldNode, then we won't
            // be able to reprint it.
            oldNode.loc) {

            // If both nodes are subtypes of Expression, then we should be
            // able to fill the location occupied by the old node with
            // code printed for the new node with no ill consequences.
            reprints.push({
                oldPath: oldPath.copy(),
                newPath: newPath.copy()
            });

            return true;
        }

        // The nodes have different types, and at least one of the types
        // is not a subtype of the Expression type, so we cannot safely
        // assume the nodes are syntactically interchangeable.
        return false;
    }

    return findChildReprints(newPath, oldPath, reprints);
}

// This object is reused in hasOpeningParen and hasClosingParen to avoid
// having to allocate a temporary object.
var reusablePos = { line: 1, column: 0 };
var nonSpaceExp = /\S/;

function hasOpeningParen(oldPath) {
    var oldNode = oldPath.getValue();
    var loc = oldNode.loc;
    var lines = loc && loc.lines;

    if (lines) {
        var pos = reusablePos;
        pos.line = loc.start.line;
        pos.column = loc.start.column;

        while (lines.prevPos(pos)) {
            var ch = lines.charAt(pos);

            if (ch === "(") {
                // If we found an opening parenthesis but it occurred before
                // the start of the original subtree for this reprinting, then
                // we must not return true for hasOpeningParen(oldPath).
                return comparePos(oldPath.getRootValue().loc.start, pos) <= 0;
            }

            if (nonSpaceExp.test(ch)) {
                return false;
            }
        }
    }

    return false;
}

function hasClosingParen(oldPath) {
    var oldNode = oldPath.getValue();
    var loc = oldNode.loc;
    var lines = loc && loc.lines;

    if (lines) {
        var pos = reusablePos;
        pos.line = loc.end.line;
        pos.column = loc.end.column;

        do {
            var ch = lines.charAt(pos);

            if (ch === ")") {
                // If we found a closing parenthesis but it occurred after the
                // end of the original subtree for this reprinting, then we
                // must not return true for hasClosingParen(oldPath).
                return comparePos(pos, oldPath.getRootValue().loc.end) <= 0;
            }

            if (nonSpaceExp.test(ch)) {
                return false;
            }

        } while (lines.nextPos(pos));
    }

    return false;
}

function hasParens(oldPath) {
    // This logic can technically be fooled if the node has parentheses
    // but there are comments intervening between the parentheses and the
    // node. In such cases the node will be harmlessly wrapped in an
    // additional layer of parentheses.
    return hasOpeningParen(oldPath) && hasClosingParen(oldPath);
}

function findChildReprints(newPath, oldPath, reprints) {
    var newNode = newPath.getValue();
    var oldNode = oldPath.getValue();

    isObject.assert(newNode);
    isObject.assert(oldNode);

    if (newNode.original === null) {
        // If newNode.original node was set to null, reprint the node.
        return false;
    }

    // If this type of node cannot come lexically first in its enclosing
    // statement (e.g. a function expression or object literal), and it
    // seems to be doing so, then the only way we can ignore this problem
    // and save ourselves from falling back to the pretty printer is if an
    // opening parenthesis happens to precede the node.  For example,
    // (function(){ ... }()); does not need to be reprinted, even though
    // the FunctionExpression comes lexically first in the enclosing
    // ExpressionStatement and fails the hasParens test, because the
    // parent CallExpression passes the hasParens test. If we relied on
    // the path.needsParens() && !hasParens(oldNode) check below, the
    // absence of a closing parenthesis after the FunctionExpression would
    // trigger pretty-printing unnecessarily.
    if (!newPath.canBeFirstInStatement() &&
        newPath.firstInStatement() &&
        !hasOpeningParen(oldPath))
        return false;

    // If this node needs parentheses and will not be wrapped with
    // parentheses when reprinted, then return false to skip reprinting
    // and let it be printed generically.
    if (newPath.needsParens(true) && !hasParens(oldPath)) {
        return false;
    }

    for (var k in util.getUnionOfKeys(newNode, oldNode)) {
        if (k === "loc")
            continue;

        newPath.stack.push(k, types.getFieldValue(newNode, k));
        oldPath.stack.push(k, types.getFieldValue(oldNode, k));
        var canReprint = findAnyReprints(newPath, oldPath, reprints);
        newPath.stack.length -= 2;
        oldPath.stack.length -= 2;

        if (!canReprint) {
            return false;
        }
    }

    return true;
}

},{"./fast-path":460,"./lines":461,"./types":467,"./util":468,"assert":190}],466:[function(require,module,exports){
var assert = require("assert");
var sourceMap = require("source-map");
var printComments = require("./comments").printComments;
var linesModule = require("./lines");
var fromString = linesModule.fromString;
var concat = linesModule.concat;
var normalizeOptions = require("./options").normalize;
var getReprinter = require("./patcher").getReprinter;
var types = require("./types");
var namedTypes = types.namedTypes;
var isString = types.builtInTypes.string;
var isObject = types.builtInTypes.object;
var FastPath = require("./fast-path");
var util = require("./util");

function PrintResult(code, sourceMap) {
    assert.ok(this instanceof PrintResult);

    isString.assert(code);
    this.code = code;

    if (sourceMap) {
        isObject.assert(sourceMap);
        this.map = sourceMap;
    }
}

var PRp = PrintResult.prototype;
var warnedAboutToString = false;

PRp.toString = function() {
    if (!warnedAboutToString) {
        console.warn(
            "Deprecation warning: recast.print now returns an object with " +
            "a .code property. You appear to be treating the object as a " +
            "string, which might still work but is strongly discouraged."
        );

        warnedAboutToString = true;
    }

    return this.code;
};

var emptyPrintResult = new PrintResult("");

function Printer(originalOptions) {
    assert.ok(this instanceof Printer);

    var explicitTabWidth = originalOptions && originalOptions.tabWidth;
    var options = normalizeOptions(originalOptions);
    assert.notStrictEqual(options, originalOptions);

    // It's common for client code to pass the same options into both
    // recast.parse and recast.print, but the Printer doesn't need (and
    // can be confused by) options.sourceFileName, so we null it out.
    options.sourceFileName = null;

    function printWithComments(path) {
        assert.ok(path instanceof FastPath);
        return printComments(path, print);
    }

    function print(path, includeComments) {
        if (includeComments)
            return printWithComments(path);

        assert.ok(path instanceof FastPath);

        if (!explicitTabWidth) {
            var oldTabWidth = options.tabWidth;
            var loc = path.getNode().loc;
            if (loc && loc.lines && loc.lines.guessTabWidth) {
                options.tabWidth = loc.lines.guessTabWidth();
                var lines = maybeReprint(path);
                options.tabWidth = oldTabWidth;
                return lines;
            }
        }

        return maybeReprint(path);
    }

    function maybeReprint(path) {
        var reprinter = getReprinter(path);
        if (reprinter)
            return maybeAddParens(path, reprinter(print));
        return printRootGenerically(path);
    }

    // Print the root node generically, but then resume reprinting its
    // children non-generically.
    function printRootGenerically(path) {
        return genericPrint(path, options, printWithComments);
    }

    // Print the entire AST generically.
    function printGenerically(path) {
        return genericPrint(path, options, printGenerically);
    }

    this.print = function(ast) {
        if (!ast) {
            return emptyPrintResult;
        }

        var lines = print(FastPath.from(ast), true);

        return new PrintResult(
            lines.toString(options),
            util.composeSourceMaps(
                options.inputSourceMap,
                lines.getSourceMap(
                    options.sourceMapName,
                    options.sourceRoot
                )
            )
        );
    };

    this.printGenerically = function(ast) {
        if (!ast) {
            return emptyPrintResult;
        }

        var path = FastPath.from(ast);
        var oldReuseWhitespace = options.reuseWhitespace;

        // Do not reuse whitespace (or anything else, for that matter)
        // when printing generically.
        options.reuseWhitespace = false;

        // TODO Allow printing of comments?
        var pr = new PrintResult(printGenerically(path).toString(options));
        options.reuseWhitespace = oldReuseWhitespace;
        return pr;
    };
}

exports.Printer = Printer;

function maybeAddParens(path, lines) {
    return path.needsParens() ? concat(["(", lines, ")"]) : lines;
}

function genericPrint(path, options, printPath) {
    assert.ok(path instanceof FastPath);
    return maybeAddParens(path, genericPrintNoParens(path, options, printPath));
}

function genericPrintNoParens(path, options, print) {
    var n = path.getValue();

    if (!n) {
        return fromString("");
    }

    if (typeof n === "string") {
        return fromString(n, options);
    }

    namedTypes.Printable.assert(n);

    switch (n.type) {
    case "File":
        return path.call(print, "program");

    case "Program":
        return maybeAddSemicolon(path.call(function(bodyPath) {
            return printStatementSequence(bodyPath, options, print);
        }, "body"));

    case "EmptyStatement":
        return fromString("");

    case "ExpressionStatement":
        return concat([path.call(print, "expression"), ";"]);

    case "BinaryExpression":
    case "LogicalExpression":
    case "AssignmentExpression":
        return fromString(" ").join([
            path.call(print, "left"),
            n.operator,
            path.call(print, "right")
        ]);

    case "AssignmentPattern":
        return concat([
            path.call(print, "left"),
            "=",
            path.call(print, "right")
        ]);

    case "MemberExpression":
        var parts = [path.call(print, "object")];

        var property = path.call(print, "property");
        if (n.computed) {
            parts.push("[", property, "]");
        } else {
            parts.push(".", property);
        }

        return concat(parts);

    case "Path":
        return fromString(".").join(n.body);

    case "Identifier":
        return concat([
            fromString(n.name, options),
            path.call(print, "typeAnnotation")
        ]);

    case "SpreadElement":
    case "SpreadElementPattern":
    case "SpreadProperty":
    case "SpreadPropertyPattern":
    case "RestElement":
        return concat(["...", path.call(print, "argument")]);

    case "FunctionDeclaration":
    case "FunctionExpression":
        var parts = [];

        if (n.async)
            parts.push("async ");

        parts.push("function");

        if (n.generator)
            parts.push("*");

        if (n.id) {
            parts.push(
                " ",
                path.call(print, "id"),
                path.call(print, "typeParameters")
            );
        }

        parts.push(
            "(",
            printFunctionParams(path, options, print),
            ")",
            path.call(print, "returnType"),
            " ",
            path.call(print, "body")
        );

        return concat(parts);

    case "ArrowFunctionExpression":
        var parts = [];

        if (n.async)
            parts.push("async ");

        if (n.params.length === 1 && !n.rest) {
            parts.push(path.call(print, "params", 0));
        } else {
            parts.push(
                "(",
                printFunctionParams(path, options, print),
                ")"
            );
        }

        parts.push(" => ", path.call(print, "body"));

        return concat(parts);

    case "MethodDefinition":
        var parts = [];

        if (n.static) {
            parts.push("static ");
        }

        parts.push(printMethod(path, options, print));

        return concat(parts);

    case "YieldExpression":
        var parts = ["yield"];

        if (n.delegate)
            parts.push("*");

        if (n.argument)
            parts.push(" ", path.call(print, "argument"));

        return concat(parts);

    case "AwaitExpression":
        var parts = ["await"];

        if (n.all)
            parts.push("*");

        if (n.argument)
            parts.push(" ", path.call(print, "argument"));

        return concat(parts);

    case "ModuleDeclaration":
        var parts = ["module", path.call(print, "id")];

        if (n.source) {
            assert.ok(!n.body);
            parts.push("from", path.call(print, "source"));
        } else {
            parts.push(path.call(print, "body"));
        }

        return fromString(" ").join(parts);

    case "ImportSpecifier":
    case "ExportSpecifier":
        var parts = [path.call(print, "id")];

        if (n.name)
            parts.push(" as ", path.call(print, "name"));

        return concat(parts);

    case "ExportBatchSpecifier":
        return fromString("*");

    case "ImportNamespaceSpecifier":
        return concat(["* as ", path.call(print, "id")]);

    case "ImportDefaultSpecifier":
        return path.call(print, "id");

    case "ExportDeclaration":
        var parts = ["export"];

        if (n["default"]) {
            parts.push(" default");

        } else if (n.specifiers &&
                   n.specifiers.length > 0) {

            if (n.specifiers.length === 1 &&
                n.specifiers[0].type === "ExportBatchSpecifier") {
                parts.push(" *");
            } else {
                parts.push(
                    " { ",
                    fromString(", ").join(path.map(print, "specifiers")),
                    " }"
                );
            }

            if (n.source)
                parts.push(" from ", path.call(print, "source"));

            parts.push(";");

            return concat(parts);
        }

        if (n.declaration) {
            if (!namedTypes.Node.check(n.declaration)) {
                console.log(JSON.stringify(n, null, 2));
            }
            var decLines = path.call(print, "declaration");
            parts.push(" ", decLines);
            if (lastNonSpaceCharacter(decLines) !== ";") {
                parts.push(";");
            }
        }

        return concat(parts);

    case "ImportDeclaration":
        var parts = ["import "];

        if (n.specifiers &&
            n.specifiers.length > 0) {

            var foundImportSpecifier = false;

            path.each(function(specifierPath) {
                var i = specifierPath.getName();
                if (i > 0) {
                    parts.push(", ");
                }

                var value = specifierPath.getValue();

                if (namedTypes.ImportDefaultSpecifier.check(value) ||
                    namedTypes.ImportNamespaceSpecifier.check(value)) {
                    assert.strictEqual(foundImportSpecifier, false);
                } else {
                    namedTypes.ImportSpecifier.assert(value);
                    if (!foundImportSpecifier) {
                        foundImportSpecifier = true;
                        parts.push("{");
                    }
                }

                parts.push(print(specifierPath));
            }, "specifiers");

            if (foundImportSpecifier) {
                parts.push("}");
            }

            parts.push(" from ");
        }

        parts.push(path.call(print, "source"), ";");

        return concat(parts);

    case "BlockStatement":
        var naked = path.call(function(bodyPath) {
            return printStatementSequence(bodyPath, options, print);
        }, "body");

        if (naked.isEmpty()) {
            return fromString("{}");
        }

        return concat([
            "{\n",
            naked.indent(options.tabWidth),
            "\n}"
        ]);

    case "ReturnStatement":
        var parts = ["return"];

        if (n.argument) {
            var argLines = path.call(print, "argument");
            if (argLines.length > 1 &&
                (namedTypes.XJSElement &&
                 namedTypes.XJSElement.check(n.argument) ||
                 namedTypes.JSXElement &&
                 namedTypes.JSXElement.check(n.argument))) {
                parts.push(
                    " (\n",
                    argLines.indent(options.tabWidth),
                    "\n)"
                );
            } else {
                parts.push(" ", argLines);
            }
        }

        parts.push(";");

        return concat(parts);

    case "CallExpression":
        return concat([
            path.call(print, "callee"),
            printArgumentsList(path, options, print)
        ]);

    case "ObjectExpression":
    case "ObjectPattern":
    case "ObjectTypeAnnotation":
        var allowBreak = false;
        var isTypeAnnotation = n.type === "ObjectTypeAnnotation";
        var separator = isTypeAnnotation ? ';' : ',';
        var fields = [];

        if (isTypeAnnotation) {
            fields.push("indexers", "callProperties");
        }

        fields.push("properties");

        var len = 0;
        fields.forEach(function(field) {
            len += n[field].length;
        });

        var oneLine = (isTypeAnnotation && len === 1) || len === 0;
        var parts = [oneLine ? "{" : "{\n"];

        fields.forEach(function(field) {
            path.map(function(childPath) {
                var i = childPath.getName();
                var prop = childPath.getValue();
                var lines = print(childPath);

                if (!oneLine) {
                    lines = lines.indent(options.tabWidth);
                }

                var multiLine = !isTypeAnnotation && lines.length > 1;
                if (multiLine && allowBreak) {
                    // Similar to the logic for BlockStatement.
                    parts.push("\n");
                }

                parts.push(lines);

                if (i < len - 1) {
                    // Add an extra line break if the previous object property
                    // had a multi-line value.
                    parts.push(separator + (multiLine ? "\n\n" : "\n"));
                    allowBreak = !multiLine;
                } else if (len !== 1 && isTypeAnnotation) {
                    parts.push(separator);
                }
            }, field);
        });

        parts.push(oneLine ? "}" : "\n}");

        return concat(parts);

    case "PropertyPattern":
        return concat([
            path.call(print, "key"),
            ": ",
            path.call(print, "pattern")
        ]);

    case "Property": // Non-standard AST node type.
        if (n.method || n.kind === "get" || n.kind === "set") {
            return printMethod(path, options, print);
        }

        var key = path.call(print, "key");
        if (n.computed) {
            key = concat(["[", key, "]"]);
        }

        if (n.shorthand) {
            return key;
        }

        return concat([key, ": ", path.call(print, "value")]);

    case "ArrayExpression":
    case "ArrayPattern":
        var elems = n.elements,
            len = elems.length,
            parts = ["["];

        path.each(function(elemPath) {
            var i = elemPath.getName();
            var elem = elemPath.getValue();
            if (!elem) {
                // If the array expression ends with a hole, that hole
                // will be ignored by the interpreter, but if it ends with
                // two (or more) holes, we need to write out two (or more)
                // commas so that the resulting code is interpreted with
                // both (all) of the holes.
                parts.push(",");
            } else {
                if (i > 0)
                    parts.push(" ");
                parts.push(print(elemPath));
                if (i < len - 1)
                    parts.push(",");
            }
        }, "elements");

        parts.push("]");

        return concat(parts);

    case "SequenceExpression":
        return fromString(", ").join(path.map(print, "expressions"));

    case "ThisExpression":
        return fromString("this");

    case "Literal":
        if (typeof n.value !== "string")
            return fromString(n.value, options);

        // intentionally fall through...

    case "ModuleSpecifier":
        return fromString(nodeStr(n.value, options), options);

    case "UnaryExpression":
        var parts = [n.operator];
        if (/[a-z]$/.test(n.operator))
            parts.push(" ");
        parts.push(path.call(print, "argument"));
        return concat(parts);

    case "UpdateExpression":
        var parts = [path.call(print, "argument"), n.operator];

        if (n.prefix)
            parts.reverse();

        return concat(parts);

    case "ConditionalExpression":
        return concat([
            "(", path.call(print, "test"),
            " ? ", path.call(print, "consequent"),
            " : ", path.call(print, "alternate"), ")"
        ]);

    case "NewExpression":
        var parts = ["new ", path.call(print, "callee")];
        var args = n.arguments;
        if (args) {
            parts.push(printArgumentsList(path, options, print));
        }

        return concat(parts);

    case "VariableDeclaration":
        var parts = [n.kind, " "];
        var maxLen = 0;
        var printed = path.map(function(childPath) {
            var lines = print(childPath);
            maxLen = Math.max(lines.length, maxLen);
            return lines;
        }, "declarations");

        if (maxLen === 1) {
            parts.push(fromString(", ").join(printed));
        } else if (printed.length > 1 ) {
            parts.push(
                fromString(",\n").join(printed)
                    .indentTail(n.kind.length + 1)
            );
        } else {
            parts.push(printed[0]);
        }

        // We generally want to terminate all variable declarations with a
        // semicolon, except when they are children of for loops.
        var parentNode = path.getParentNode();
        if (!namedTypes.ForStatement.check(parentNode) &&
            !namedTypes.ForInStatement.check(parentNode) &&
            !(namedTypes.ForOfStatement &&
              namedTypes.ForOfStatement.check(parentNode))) {
            parts.push(";");
        }

        return concat(parts);

    case "VariableDeclarator":
        return n.init ? fromString(" = ").join([
            path.call(print, "id"),
            path.call(print, "init")
        ]) : path.call(print, "id");

    case "WithStatement":
        return concat([
            "with (",
            path.call(print, "object"),
            ") ",
            path.call(print, "body")
        ]);

    case "IfStatement":
        var con = adjustClause(path.call(print, "consequent"), options),
            parts = ["if (", path.call(print, "test"), ")", con];

        if (n.alternate)
            parts.push(
                endsWithBrace(con) ? " else" : "\nelse",
                adjustClause(path.call(print, "alternate"), options));

        return concat(parts);

    case "ForStatement":
        // TODO Get the for (;;) case right.
        var init = path.call(print, "init"),
            sep = init.length > 1 ? ";\n" : "; ",
            forParen = "for (",
            indented = fromString(sep).join([
                init,
                path.call(print, "test"),
                path.call(print, "update")
            ]).indentTail(forParen.length),
            head = concat([forParen, indented, ")"]),
            clause = adjustClause(path.call(print, "body"), options),
            parts = [head];

        if (head.length > 1) {
            parts.push("\n");
            clause = clause.trimLeft();
        }

        parts.push(clause);

        return concat(parts);

    case "WhileStatement":
        return concat([
            "while (",
            path.call(print, "test"),
            ")",
            adjustClause(path.call(print, "body"), options)
        ]);

    case "ForInStatement":
        // Note: esprima can't actually parse "for each (".
        return concat([
            n.each ? "for each (" : "for (",
            path.call(print, "left"),
            " in ",
            path.call(print, "right"),
            ")",
            adjustClause(path.call(print, "body"), options)
        ]);

    case "ForOfStatement":
        return concat([
            "for (",
            path.call(print, "left"),
            " of ",
            path.call(print, "right"),
            ")",
            adjustClause(path.call(print, "body"), options)
        ]);

    case "DoWhileStatement":
        var doBody = concat([
            "do",
            adjustClause(path.call(print, "body"), options)
        ]), parts = [doBody];

        if (endsWithBrace(doBody))
            parts.push(" while");
        else
            parts.push("\nwhile");

        parts.push(" (", path.call(print, "test"), ");");

        return concat(parts);

    case "BreakStatement":
        var parts = ["break"];
        if (n.label)
            parts.push(" ", path.call(print, "label"));
        parts.push(";");
        return concat(parts);

    case "ContinueStatement":
        var parts = ["continue"];
        if (n.label)
            parts.push(" ", path.call(print, "label"));
        parts.push(";");
        return concat(parts);

    case "LabeledStatement":
        return concat([
            path.call(print, "label"),
            ":\n",
            path.call(print, "body")
        ]);

    case "TryStatement":
        var parts = [
            "try ",
            path.call(print, "block")
        ];

        if (n.handler) {
            parts.push(" ", path.call(print, "handler"));
        } else if (n.handlers) {
            path.each(function(handlerPath) {
                parts.push(" ", print(handlerPath));
            }, "handlers");
        }

        if (n.finalizer) {
            parts.push(" finally ", path.call(print, "finalizer"));
        }

        return concat(parts);

    case "CatchClause":
        var parts = ["catch (", path.call(print, "param")];

        if (n.guard)
            // Note: esprima does not recognize conditional catch clauses.
            parts.push(" if ", path.call(print, "guard"));

        parts.push(") ", path.call(print, "body"));

        return concat(parts);

    case "ThrowStatement":
        return concat(["throw ", path.call(print, "argument"), ";"]);

    case "SwitchStatement":
        return concat([
            "switch (",
            path.call(print, "discriminant"),
            ") {\n",
            fromString("\n").join(path.map(print, "cases")),
            "\n}"
        ]);

        // Note: ignoring n.lexical because it has no printing consequences.

    case "SwitchCase":
        var parts = [];

        if (n.test)
            parts.push("case ", path.call(print, "test"), ":");
        else
            parts.push("default:");

        if (n.consequent.length > 0) {
            parts.push("\n", path.call(function(consequentPath) {
                return printStatementSequence(consequentPath, options, print);
            }, "consequent").indent(options.tabWidth));
        }

        return concat(parts);

    case "DebuggerStatement":
        return fromString("debugger;");

    // JSX extensions below.

    case "XJSAttribute":
    case "JSXAttribute":
        var parts = [path.call(print, "name")];
        if (n.value)
            parts.push("=", path.call(print, "value"));
        return concat(parts);

    case "XJSIdentifier":
    case "JSXIdentifier":
        return fromString(n.name, options);

    case "XJSNamespacedName":
    case "JSXNamespacedName":
        return fromString(":").join([
            path.call(print, "namespace"),
            path.call(print, "name")
        ]);

    case "XJSMemberExpression":
    case "JSXMemberExpression":
        return fromString(".").join([
            path.call(print, "object"),
            path.call(print, "property")
        ]);

    case "XJSSpreadAttribute":
    case "JSXSpreadAttribute":
        return concat(["{...", path.call(print, "argument"), "}"]);

    case "XJSExpressionContainer":
    case "JSXExpressionContainer":
        return concat(["{", path.call(print, "expression"), "}"]);

    case "XJSElement":
    case "JSXElement":
        var openingLines = path.call(print, "openingElement");

        if (n.openingElement.selfClosing) {
            assert.ok(!n.closingElement);
            return openingLines;
        }

        var childLines = concat(
            path.map(function(childPath) {
                var child = childPath.getValue();

                if (namedTypes.Literal.check(child) &&
                    typeof child.value === "string") {
                    if (/\S/.test(child.value)) {
                        return child.value.replace(/^\s+|\s+$/g, "");
                    } else if (/\n/.test(child.value)) {
                        return "\n";
                    }
                }

                return print(childPath);
            }, "children")
        ).indentTail(options.tabWidth);

        var closingLines = path.call(print, "closingElement");

        return concat([
            openingLines,
            childLines,
            closingLines
        ]);

    case "XJSOpeningElement":
    case "JSXOpeningElement":
        var parts = ["<", path.call(print, "name")];
        var attrParts = [];

        path.each(function(attrPath) {
            attrParts.push(" ", print(attrPath));
        }, "attributes");

        var attrLines = concat(attrParts);

        var needLineWrap = (
            attrLines.length > 1 ||
            attrLines.getLineLength(1) > options.wrapColumn
        );

        if (needLineWrap) {
            attrParts.forEach(function(part, i) {
                if (part === " ") {
                    assert.strictEqual(i % 2, 0);
                    attrParts[i] = "\n";
                }
            });

            attrLines = concat(attrParts).indentTail(options.tabWidth);
        }

        parts.push(attrLines, n.selfClosing ? " />" : ">");

        return concat(parts);

    case "XJSClosingElement":
    case "JSXClosingElement":
        return concat(["</", path.call(print, "name"), ">"]);

    case "XJSText":
    case "JSXText":
        return fromString(n.value, options);

    case "XJSEmptyExpression":
    case "JSXEmptyExpression":
        return fromString("");

    case "TypeAnnotatedIdentifier":
        return concat([
            path.call(print, "annotation"),
            " ",
            path.call(print, "identifier")
        ]);

    case "ClassBody":
        if (n.body.length === 0) {
            return fromString("{}");
        }

        return concat([
            "{\n",
            path.call(function(bodyPath) {
                return printStatementSequence(bodyPath, options, print);
            }, "body").indent(options.tabWidth),
            "\n}"
        ]);

    case "ClassPropertyDefinition":
        var parts = ["static ", path.call(print, "definition")];
        if (!namedTypes.MethodDefinition.check(n.definition))
            parts.push(";");
        return concat(parts);

    case "ClassProperty":
        return concat([
            path.call(print, "key"),
            path.call(print, "typeAnnotation"),
            ";"
        ]);

    case "ClassDeclaration":
    case "ClassExpression":
        var parts = ["class"];

        if (n.id) {
            parts.push(
                " ",
                path.call(print, "id"),
                path.call(print, "typeParameters")
            );
        }

        if (n.superClass) {
            parts.push(
                " extends ",
                path.call(print, "superClass"),
                path.call(print, "superTypeParameters")
            );
        }

        if (n["implements"]) {
            parts.push(
                " implements ",
                fromString(", ").join(path.map(print, "implements"))
            );
        }

        parts.push(" ", path.call(print, "body"));

        return concat(parts);

    // These types are unprintable because they serve as abstract
    // supertypes for other (printable) types.
    case "Node":
    case "Printable":
    case "SourceLocation":
    case "Position":
    case "Statement":
    case "Function":
    case "Pattern":
    case "Expression":
    case "Declaration":
    case "Specifier":
    case "NamedSpecifier":
    case "Comment": // Supertype of Block and Line.
    case "MemberTypeAnnotation": // Flow
    case "TupleTypeAnnotation": // Flow
    case "Type": // Flow
        throw new Error("unprintable type: " + JSON.stringify(n.type));

    case "Block": // Block comment.
        return concat(["/*", fromString(n.value, options), "*/"]);

    case "Line": // Line comment.
        return concat(["//", fromString(n.value, options)]);

    // Type Annotations for Facebook Flow, typically stripped out or
    // transformed away before printing.
    case "TypeAnnotation":
        var parts = [];

        if (n.typeAnnotation) {
            if (n.typeAnnotation.type !== "FunctionTypeAnnotation") {
                parts.push(": ");
            }
            parts.push(path.call(print, "typeAnnotation"));
            return concat(parts);
        }

        return fromString("");

    case "AnyTypeAnnotation":
        return fromString("any", options);

    case "ArrayTypeAnnotation":
        return concat([
            path.call(print, "elementType"),
            "[]"
        ]);

    case "BooleanTypeAnnotation":
        return fromString("boolean", options);

    case "DeclareClass":
        return concat([
            fromString("declare class ", options),
            path.call(print, "id"),
            " ",
            path.call(print, "body"),
        ]);

    case "DeclareFunction":
        return concat([
            fromString("declare function ", options),
            path.call(print, "id")
        ]);

    case "DeclareModule":
        return concat([
            fromString("declare module ", options),
            path.call(print, "id"),
            " ",
            path.call(print, "body"),
        ]);

    case "DeclareVariable":
        return concat([
            fromString("declare var ", options),
            path.call(print, "id")
        ]);

    case "FunctionTypeAnnotation":
        // FunctionTypeAnnotation is ambiguous:
        // declare function(a: B): void; OR
        // var A: (a: B) => void;
        var parts = [];
        var parent = path.getParentNode(0);
        var isArrowFunctionTypeAnnotation = !(
            namedTypes.ObjectTypeCallProperty.check(parent) ||
            namedTypes.DeclareFunction.check(path.getParentNode(2))
        );

        var needsColon =
            isArrowFunctionTypeAnnotation &&
            !namedTypes.FunctionTypeParam.check(parent);

        if (needsColon) {
            parts.push(": ");
        }

        parts.push(
            "(",
            fromString(", ").join(path.map(print, "params")),
            ")"
        );

        // The returnType is not wrapped in a TypeAnnotation, so the colon
        // needs to be added separately.
        if (n.returnType) {
            parts.push(
                isArrowFunctionTypeAnnotation ? " => " : ": ",
                path.call(print, "returnType")
            );
        }

        return concat(parts);

    case "FunctionTypeParam":
        return concat([
            path.call(print, "name"),
            ": ",
            path.call(print, "typeAnnotation"),
        ]);

    case "GenericTypeAnnotation":
        return concat([
            path.call(print, "id"),
            path.call(print, "typeParameters")
        ]);

    case "InterfaceDeclaration":
        var parts = [
            fromString("interface ", options),
            path.call(print, "id"),
            path.call(print, "typeParameters"),
            " "
        ];

        if (n["extends"]) {
            parts.push(
                "extends ",
                fromString(", ").join(path.map(print, "extends"))
            );
        }

        parts.push(path.call(print, "body"));

        return concat(parts);

    case "ClassImplements":
    case "InterfaceExtends":
        return concat([
            path.call(print, "id"),
            path.call(print, "typeParameters")
        ]);

    case "IntersectionTypeAnnotation":
        return fromString(" & ").join(path.map(print, "types"));

    case "NullableTypeAnnotation":
        return concat([
            "?",
            path.call(print, "typeAnnotation")
        ]);

    case "NumberTypeAnnotation":
        return fromString("number", options);

    case "ObjectTypeCallProperty":
        return path.call(print, "value");

    case "ObjectTypeIndexer":
        return concat([
            "[",
            path.call(print, "id"),
            ": ",
            path.call(print, "key"),
            "]: ",
            path.call(print, "value")
        ]);

    case "ObjectTypeProperty":
        return concat([
            path.call(print, "key"),
            ": ",
            path.call(print, "value")
        ]);

    case "QualifiedTypeIdentifier":
        return concat([
            path.call(print, "qualification"),
            ".",
            path.call(print, "id")
        ]);

    case "StringLiteralTypeAnnotation":
        return fromString(nodeStr(n.value, options), options);

    case "StringTypeAnnotation":
        return fromString("string", options);

    case "TypeAlias":
        return concat([
            "type ",
            path.call(print, "id"),
            " = ",
            path.call(print, "right")
        ]);

    case "TypeCastExpression":
        return concat([
            "(",
            path.call(print, "expression"),
            path.call(print, "typeAnnotation"),
            ")"
        ]);

    case "TypeParameterDeclaration":
    case "TypeParameterInstantiation":
        return concat([
            "<",
            fromString(", ").join(path.map(print, "params")),
            ">"
        ]);

    case "TypeofTypeAnnotation":
        return concat([
            fromString("typeof ", options),
            path.call(print, "argument")
        ]);

    case "UnionTypeAnnotation":
        return fromString(" | ").join(path.map(print, "types"));

    case "VoidTypeAnnotation":
        return fromString("void", options);

    // Unhandled types below. If encountered, nodes of these types should
    // be either left alone or desugared into AST types that are fully
    // supported by the pretty-printer.
    case "ClassHeritage": // TODO
    case "ComprehensionBlock": // TODO
    case "ComprehensionExpression": // TODO
    case "Glob": // TODO
    case "TaggedTemplateExpression": // TODO
    case "TemplateElement": // TODO
    case "TemplateLiteral": // TODO
    case "GeneratorExpression": // TODO
    case "LetStatement": // TODO
    case "LetExpression": // TODO
    case "GraphExpression": // TODO
    case "GraphIndexExpression": // TODO

    // XML types that nobody cares about or needs to print.
    case "XMLDefaultDeclaration":
    case "XMLAnyName":
    case "XMLQualifiedIdentifier":
    case "XMLFunctionQualifiedIdentifier":
    case "XMLAttributeSelector":
    case "XMLFilterExpression":
    case "XML":
    case "XMLElement":
    case "XMLList":
    case "XMLEscape":
    case "XMLText":
    case "XMLStartTag":
    case "XMLEndTag":
    case "XMLPointTag":
    case "XMLName":
    case "XMLAttribute":
    case "XMLCdata":
    case "XMLComment":
    case "XMLProcessingInstruction":
    default:
        debugger;
        throw new Error("unknown type: " + JSON.stringify(n.type));
    }

    return p;
}

function printStatementSequence(path, options, print) {
    var inClassBody =
        namedTypes.ClassBody &&
        namedTypes.ClassBody.check(path.getParentNode());

    var filtered = [];
    path.each(function(stmtPath) {
        var i = stmtPath.getName();
        var stmt = stmtPath.getValue();

        // Just in case the AST has been modified to contain falsy
        // "statements," it's safer simply to skip them.
        if (!stmt) {
            return;
        }

        // Skip printing EmptyStatement nodes to avoid leaving stray
        // semicolons lying around.
        if (stmt.type === "EmptyStatement") {
            return;
        }

        if (!inClassBody) {
            namedTypes.Statement.assert(stmt);
        }

        // We can't hang onto stmtPath outside of this function, because
        // it's just a reference to a mutable FastPath object, so we have
        // to go ahead and print it here.
        filtered.push({
            node: stmt,
            printed: print(stmtPath)
        });
    });

    var prevTrailingSpace = null;
    var len = filtered.length;
    var parts = [];

    filtered.forEach(function(info, i) {
        var printed = info.printed;
        var stmt = info.node;
        var needSemicolon = true;
        var multiLine = printed.length > 1;
        var notFirst = i > 0;
        var notLast = i < len - 1;
        var leadingSpace;
        var trailingSpace;

        if (inClassBody) {
            if (namedTypes.MethodDefinition.check(stmt) ||
                (namedTypes.ClassPropertyDefinition.check(stmt) &&
                 namedTypes.MethodDefinition.check(stmt.definition))) {
                needSemicolon = false;
            }
        }

        if (needSemicolon) {
            // Try to add a semicolon to anything that isn't a method in a
            // class body.
            printed = maybeAddSemicolon(printed);
        }

        var trueLoc = options.reuseWhitespace && util.getTrueLoc(stmt);
        var lines = trueLoc && trueLoc.lines;

        if (notFirst) {
            if (lines) {
                var beforeStart = lines.skipSpaces(trueLoc.start, true);
                var beforeStartLine = beforeStart ? beforeStart.line : 1;
                var leadingGap = trueLoc.start.line - beforeStartLine;
                leadingSpace = Array(leadingGap + 1).join("\n");
            } else {
                leadingSpace = multiLine ? "\n\n" : "\n";
            }
        } else {
            leadingSpace = "";
        }

        if (notLast) {
            if (lines) {
                var afterEnd = lines.skipSpaces(trueLoc.end);
                var afterEndLine = afterEnd ? afterEnd.line : lines.length;
                var trailingGap = afterEndLine - trueLoc.end.line;
                trailingSpace = Array(trailingGap + 1).join("\n");
            } else {
                trailingSpace = multiLine ? "\n\n" : "\n";
            }
        } else {
            trailingSpace = "";
        }

        parts.push(
            maxSpace(prevTrailingSpace, leadingSpace),
            printed
        );

        if (notLast) {
            prevTrailingSpace = trailingSpace;
        } else if (trailingSpace) {
            parts.push(trailingSpace);
        }
    });

    return concat(parts);
}

function maxSpace(s1, s2) {
    if (!s1 && !s2) {
        return fromString("");
    }

    if (!s1) {
        return fromString(s2);
    }

    if (!s2) {
        return fromString(s1);
    }

    var spaceLines1 = fromString(s1);
    var spaceLines2 = fromString(s2);

    if (spaceLines2.length > spaceLines1.length) {
        return spaceLines2;
    }

    return spaceLines1;
}

function printMethod(path, options, print) {
    var node = path.getNode();
    var kind = node.kind;
    var parts = [];

    namedTypes.FunctionExpression.assert(node.value);

    if (node.value.async) {
        parts.push("async ");
    }

    if (!kind || kind === "init") {
        if (node.value.generator) {
            parts.push("*");
        }
    } else {
        assert.ok(kind === "get" || kind === "set");
        parts.push(kind, " ");
    }

    var key = path.call(print, "key");
    if (node.computed) {
        key = concat(["[", key, "]"]);
    }

    parts.push(
        key,
        path.call(print, "value", "typeParameters"),
        "(",
        path.call(function(valuePath) {
            return printFunctionParams(valuePath, options, print);
        }, "value"),
        ")",
        path.call(print, "value", "returnType"),
        " ",
        path.call(print, "value", "body")
    );

    return concat(parts);
}

function printArgumentsList(path, options, print) {
    var printed = path.map(print, "arguments");

    var joined = fromString(", ").join(printed);
    if (joined.getLineLength(1) > options.wrapColumn) {
        joined = fromString(",\n").join(printed);
        return concat(["(\n", joined.indent(options.tabWidth), "\n)"]);
    }

    return concat(["(", joined, ")"]);
}

function printFunctionParams(path, options, print) {
    var fun = path.getValue();
    namedTypes.Function.assert(fun);

    var printed = path.map(print, "params");

    if (fun.defaults) {
        path.each(function(defExprPath) {
            var i = defExprPath.getName();
            var p = printed[i];
            if (p && defExprPath.getValue()) {
                printed[i] = concat([p, "=", print(defExprPath)]);
            }
        }, "defaults");
    }

    if (fun.rest) {
        printed.push(concat(["...", path.call(print, "rest")]));
    }

    var joined = fromString(", ").join(printed);
    if (joined.length > 1 ||
        joined.getLineLength(1) > options.wrapColumn) {
        joined = fromString(",\n").join(printed);
        return concat(["\n", joined.indent(options.tabWidth)]);
    }

    return joined;
}

function adjustClause(clause, options) {
    if (clause.length > 1)
        return concat([" ", clause]);

    return concat([
        "\n",
        maybeAddSemicolon(clause).indent(options.tabWidth)
    ]);
}

function lastNonSpaceCharacter(lines) {
    var pos = lines.lastPos();
    do {
        var ch = lines.charAt(pos);
        if (/\S/.test(ch))
            return ch;
    } while (lines.prevPos(pos));
}

function endsWithBrace(lines) {
    return lastNonSpaceCharacter(lines) === "}";
}

function swapQuotes(str) {
    return str.replace(/['"]/g, function(m) {
        return m === '"' ? '\'' : '"';
    });
}

function nodeStr(str, options) {
    isString.assert(str);
    switch (options.quote) {
    case "auto":
        var double = JSON.stringify(str);
        var single = swapQuotes(JSON.stringify(swapQuotes(str)));
        return double.length > single.length ? single : double;
    case "single":
        return swapQuotes(JSON.stringify(swapQuotes(str)));
    case "double":
    default:
        return JSON.stringify(str);
    }
}

function maybeAddSemicolon(lines) {
    var eoc = lastNonSpaceCharacter(lines);
    if (!eoc || "\n};".indexOf(eoc) < 0)
        return concat([lines, ";"]);
    return lines;
}

},{"./comments":459,"./fast-path":460,"./lines":461,"./options":463,"./patcher":465,"./types":467,"./util":468,"assert":190,"source-map":483}],467:[function(require,module,exports){
var types = require("ast-types");
var def = types.Type.def;

def("File")
    .bases("Node")
    .build("program")
    .field("program", def("Program"));

types.finalize();

module.exports = types;

},{"ast-types":188}],468:[function(require,module,exports){
var assert = require("assert");
var types = require("./types");
var getFieldValue = types.getFieldValue;
var n = types.namedTypes;
var sourceMap = require("source-map");
var SourceMapConsumer = sourceMap.SourceMapConsumer;
var SourceMapGenerator = sourceMap.SourceMapGenerator;
var hasOwn = Object.prototype.hasOwnProperty;

function getUnionOfKeys() {
    var result = {};
    var argc = arguments.length;
    for (var i = 0; i < argc; ++i) {
        var keys = Object.keys(arguments[i]);
        var keyCount = keys.length;
        for (var j = 0; j < keyCount; ++j) {
            result[keys[j]] = true;
        }
    }
    return result;
}
exports.getUnionOfKeys = getUnionOfKeys;

function comparePos(pos1, pos2) {
    return (pos1.line - pos2.line) || (pos1.column - pos2.column);
}
exports.comparePos = comparePos;

function copyPos(pos) {
    return {
        line: pos.line,
        column: pos.column
    };
}
exports.copyPos = copyPos;

exports.composeSourceMaps = function(formerMap, latterMap) {
    if (formerMap) {
        if (!latterMap) {
            return formerMap;
        }
    } else {
        return latterMap || null;
    }

    var smcFormer = new SourceMapConsumer(formerMap);
    var smcLatter = new SourceMapConsumer(latterMap);
    var smg = new SourceMapGenerator({
        file: latterMap.file,
        sourceRoot: latterMap.sourceRoot
    });

    var sourcesToContents = {};

    smcLatter.eachMapping(function(mapping) {
        var origPos = smcFormer.originalPositionFor({
            line: mapping.originalLine,
            column: mapping.originalColumn
        });

        var sourceName = origPos.source;
        if (sourceName === null) {
            return;
        }

        smg.addMapping({
            source: sourceName,
            original: copyPos(origPos),
            generated: {
                line: mapping.generatedLine,
                column: mapping.generatedColumn
            },
            name: mapping.name
        });

        var sourceContent = smcFormer.sourceContentFor(sourceName);
        if (sourceContent && !hasOwn.call(sourcesToContents, sourceName)) {
            sourcesToContents[sourceName] = sourceContent;
            smg.setSourceContent(sourceName, sourceContent);
        }
    });

    return smg.toJSON();
};

exports.getTrueLoc = function(node) {
    // It's possible that node is newly-created (not parsed by Esprima),
    // in which case it probably won't have a .loc property (or an
    // .original property for that matter). That's fine; we'll just
    // pretty-print it as usual.
    if (!node.loc) {
        return null;
    }

    if (!node.comments) {
        // If the node has no comments, regard node.loc as true.
        return node.loc;
    }

    var start = node.loc.start;
    var end = node.loc.end;

    // If the node has any comments, their locations might contribute to
    // the true start/end positions of the node.
    node.comments.forEach(function(comment) {
        if (comment.loc) {
            if (comparePos(comment.loc.start, start) < 0) {
                start = comment.loc.start;
            }

            if (comparePos(end, comment.loc.end) < 0) {
                end = comment.loc.end;
            }
        }
    });

    return {
        lines: node.loc.lines,
        start: start,
        end: end
    };
};

exports.fixFaultyLocations = function(node) {
    if ((n.MethodDefinition && n.MethodDefinition.check(node)) ||
        (n.Property.check(node) && (node.method || node.shorthand))) {
        // If the node is a MethodDefinition or a .method or .shorthand
        // Property, then the location information stored in
        // node.value.loc is very likely untrustworthy (just the {body}
        // part of a method, or nothing in the case of shorthand
        // properties), so we null out that information to prevent
        // accidental reuse of bogus source code during reprinting.
        node.value.loc = null;

        if (n.FunctionExpression.check(node.value)) {
            // FunctionExpression method values should be anonymous,
            // because their .id fields are ignored anyway.
            node.value.id = null;
        }
    }

    var loc = node.loc;
    if (loc) {
        if (loc.start.line < 1) {
            loc.start.line = 1;
        }

        if (loc.end.line < 1) {
            loc.end.line = 1;
        }
    }
};

},{"./types":467,"assert":190,"source-map":483}],469:[function(require,module,exports){
(function (process){
var types = require("./lib/types");
var parse = require("./lib/parser").parse;
var Printer = require("./lib/printer").Printer;

function print(node, options) {
    return new Printer(options).print(node);
}

function prettyPrint(node, options) {
    return new Printer(options).printGenerically(node);
}

function run(transformer, options) {
    return runFile(process.argv[2], transformer, options);
}

function runFile(path, transformer, options) {
    require("fs").readFile(path, "utf-8", function(err, code) {
        if (err) {
            console.error(err);
            return;
        }

        runString(code, transformer, options);
    });
}

function defaultWriteback(output) {
    process.stdout.write(output);
}

function runString(code, transformer, options) {
    var writeback = options && options.writeback || defaultWriteback;
    transformer(parse(code, options), function(node) {
        writeback(print(node, options).code);
    });
}

Object.defineProperties(exports, {
    /**
     * Parse a string of code into an augmented syntax tree suitable for
     * arbitrary modification and reprinting.
     */
    parse: {
        enumerable: true,
        value: parse
    },

    /**
     * Traverse and potentially modify an abstract syntax tree using a
     * convenient visitor syntax:
     *
     *   recast.visit(ast, {
     *     names: [],
     *     visitIdentifier: function(path) {
     *       var node = path.value;
     *       this.visitor.names.push(node.name);
     *       this.traverse(path);
     *     }
     *   });
     */
    visit: {
        enumerable: true,
        value: types.visit
    },

    /**
     * Reprint a modified syntax tree using as much of the original source
     * code as possible.
     */
    print: {
        enumerable: true,
        value: print
    },

    /**
     * Print without attempting to reuse any original source code.
     */
    prettyPrint: {
        enumerable: false,
        value: prettyPrint
    },

    /**
     * Customized version of require("ast-types").
     */
    types: {
        enumerable: false,
        value: types
    },

    /**
     * Convenient command-line interface (see e.g. example/add-braces).
     */
    run: {
        enumerable: false,
        value: run
    }
});

}).call(this,require('_process'))
},{"./lib/parser":464,"./lib/printer":466,"./lib/types":467,"_process":200,"fs":189}],470:[function(require,module,exports){
/*
  Copyright (C) 2013 Ariya Hidayat <ariya.hidayat@gmail.com>
  Copyright (C) 2013 Thaddee Tyl <thaddee.tyl@gmail.com>
  Copyright (C) 2012 Ariya Hidayat <ariya.hidayat@gmail.com>
  Copyright (C) 2012 Mathias Bynens <mathias@qiwi.be>
  Copyright (C) 2012 Joost-Wim Boekesteijn <joost-wim@boekesteijn.nl>
  Copyright (C) 2012 Kris Kowal <kris.kowal@cixar.com>
  Copyright (C) 2012 Yusuke Suzuki <utatane.tea@gmail.com>
  Copyright (C) 2012 Arpad Borsos <arpad.borsos@googlemail.com>
  Copyright (C) 2011 Ariya Hidayat <ariya.hidayat@gmail.com>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

(function (root, factory) {
    'use strict';

    // Universal Module Definition (UMD) to support AMD, CommonJS/Node.js,
    // Rhino, and plain browser loading.

    /* istanbul ignore next */
    if (typeof define === 'function' && define.amd) {
        define(['exports'], factory);
    } else if (typeof exports !== 'undefined') {
        factory(exports);
    } else {
        factory((root.esprima = {}));
    }
}(this, function (exports) {
    'use strict';

    var Token,
        TokenName,
        FnExprTokens,
        Syntax,
        PropertyKind,
        Messages,
        Regex,
        SyntaxTreeDelegate,
        XHTMLEntities,
        ClassPropertyType,
        source,
        strict,
        index,
        lineNumber,
        lineStart,
        length,
        delegate,
        lookahead,
        state,
        extra;

    Token = {
        BooleanLiteral: 1,
        EOF: 2,
        Identifier: 3,
        Keyword: 4,
        NullLiteral: 5,
        NumericLiteral: 6,
        Punctuator: 7,
        StringLiteral: 8,
        RegularExpression: 9,
        Template: 10,
        JSXIdentifier: 11,
        JSXText: 12
    };

    TokenName = {};
    TokenName[Token.BooleanLiteral] = 'Boolean';
    TokenName[Token.EOF] = '<end>';
    TokenName[Token.Identifier] = 'Identifier';
    TokenName[Token.Keyword] = 'Keyword';
    TokenName[Token.NullLiteral] = 'Null';
    TokenName[Token.NumericLiteral] = 'Numeric';
    TokenName[Token.Punctuator] = 'Punctuator';
    TokenName[Token.StringLiteral] = 'String';
    TokenName[Token.JSXIdentifier] = 'JSXIdentifier';
    TokenName[Token.JSXText] = 'JSXText';
    TokenName[Token.RegularExpression] = 'RegularExpression';
    TokenName[Token.Template] = 'Template';

    // A function following one of those tokens is an expression.
    FnExprTokens = ['(', '{', '[', 'in', 'typeof', 'instanceof', 'new',
                    'return', 'case', 'delete', 'throw', 'void',
                    // assignment operators
                    '=', '+=', '-=', '*=', '/=', '%=', '<<=', '>>=', '>>>=',
                    '&=', '|=', '^=', ',',
                    // binary/unary operators
                    '+', '-', '*', '/', '%', '++', '--', '<<', '>>', '>>>', '&',
                    '|', '^', '!', '~', '&&', '||', '?', ':', '===', '==', '>=',
                    '<=', '<', '>', '!=', '!=='];

    Syntax = {
        AnyTypeAnnotation: 'AnyTypeAnnotation',
        ArrayExpression: 'ArrayExpression',
        ArrayPattern: 'ArrayPattern',
        ArrayTypeAnnotation: 'ArrayTypeAnnotation',
        ArrowFunctionExpression: 'ArrowFunctionExpression',
        AssignmentExpression: 'AssignmentExpression',
        BinaryExpression: 'BinaryExpression',
        BlockStatement: 'BlockStatement',
        BooleanTypeAnnotation: 'BooleanTypeAnnotation',
        BreakStatement: 'BreakStatement',
        CallExpression: 'CallExpression',
        CatchClause: 'CatchClause',
        ClassBody: 'ClassBody',
        ClassDeclaration: 'ClassDeclaration',
        ClassExpression: 'ClassExpression',
        ClassImplements: 'ClassImplements',
        ClassProperty: 'ClassProperty',
        ComprehensionBlock: 'ComprehensionBlock',
        ComprehensionExpression: 'ComprehensionExpression',
        ConditionalExpression: 'ConditionalExpression',
        ContinueStatement: 'ContinueStatement',
        DebuggerStatement: 'DebuggerStatement',
        DeclareClass: 'DeclareClass',
        DeclareFunction: 'DeclareFunction',
        DeclareModule: 'DeclareModule',
        DeclareVariable: 'DeclareVariable',
        DoWhileStatement: 'DoWhileStatement',
        EmptyStatement: 'EmptyStatement',
        ExportDeclaration: 'ExportDeclaration',
        ExportBatchSpecifier: 'ExportBatchSpecifier',
        ExportSpecifier: 'ExportSpecifier',
        ExpressionStatement: 'ExpressionStatement',
        ForInStatement: 'ForInStatement',
        ForOfStatement: 'ForOfStatement',
        ForStatement: 'ForStatement',
        FunctionDeclaration: 'FunctionDeclaration',
        FunctionExpression: 'FunctionExpression',
        FunctionTypeAnnotation: 'FunctionTypeAnnotation',
        FunctionTypeParam: 'FunctionTypeParam',
        GenericTypeAnnotation: 'GenericTypeAnnotation',
        Identifier: 'Identifier',
        IfStatement: 'IfStatement',
        ImportDeclaration: 'ImportDeclaration',
        ImportDefaultSpecifier: 'ImportDefaultSpecifier',
        ImportNamespaceSpecifier: 'ImportNamespaceSpecifier',
        ImportSpecifier: 'ImportSpecifier',
        InterfaceDeclaration: 'InterfaceDeclaration',
        InterfaceExtends: 'InterfaceExtends',
        IntersectionTypeAnnotation: 'IntersectionTypeAnnotation',
        LabeledStatement: 'LabeledStatement',
        Literal: 'Literal',
        LogicalExpression: 'LogicalExpression',
        MemberExpression: 'MemberExpression',
        MethodDefinition: 'MethodDefinition',
        NewExpression: 'NewExpression',
        NullableTypeAnnotation: 'NullableTypeAnnotation',
        NumberTypeAnnotation: 'NumberTypeAnnotation',
        ObjectExpression: 'ObjectExpression',
        ObjectPattern: 'ObjectPattern',
        ObjectTypeAnnotation: 'ObjectTypeAnnotation',
        ObjectTypeCallProperty: 'ObjectTypeCallProperty',
        ObjectTypeIndexer: 'ObjectTypeIndexer',
        ObjectTypeProperty: 'ObjectTypeProperty',
        Program: 'Program',
        Property: 'Property',
        QualifiedTypeIdentifier: 'QualifiedTypeIdentifier',
        ReturnStatement: 'ReturnStatement',
        SequenceExpression: 'SequenceExpression',
        SpreadElement: 'SpreadElement',
        SpreadProperty: 'SpreadProperty',
        StringLiteralTypeAnnotation: 'StringLiteralTypeAnnotation',
        StringTypeAnnotation: 'StringTypeAnnotation',
        SwitchCase: 'SwitchCase',
        SwitchStatement: 'SwitchStatement',
        TaggedTemplateExpression: 'TaggedTemplateExpression',
        TemplateElement: 'TemplateElement',
        TemplateLiteral: 'TemplateLiteral',
        ThisExpression: 'ThisExpression',
        ThrowStatement: 'ThrowStatement',
        TupleTypeAnnotation: 'TupleTypeAnnotation',
        TryStatement: 'TryStatement',
        TypeAlias: 'TypeAlias',
        TypeAnnotation: 'TypeAnnotation',
        TypeCastExpression: 'TypeCastExpression',
        TypeofTypeAnnotation: 'TypeofTypeAnnotation',
        TypeParameterDeclaration: 'TypeParameterDeclaration',
        TypeParameterInstantiation: 'TypeParameterInstantiation',
        UnaryExpression: 'UnaryExpression',
        UnionTypeAnnotation: 'UnionTypeAnnotation',
        UpdateExpression: 'UpdateExpression',
        VariableDeclaration: 'VariableDeclaration',
        VariableDeclarator: 'VariableDeclarator',
        VoidTypeAnnotation: 'VoidTypeAnnotation',
        WhileStatement: 'WhileStatement',
        WithStatement: 'WithStatement',
        JSXIdentifier: 'JSXIdentifier',
        JSXNamespacedName: 'JSXNamespacedName',
        JSXMemberExpression: 'JSXMemberExpression',
        JSXEmptyExpression: 'JSXEmptyExpression',
        JSXExpressionContainer: 'JSXExpressionContainer',
        JSXElement: 'JSXElement',
        JSXClosingElement: 'JSXClosingElement',
        JSXOpeningElement: 'JSXOpeningElement',
        JSXAttribute: 'JSXAttribute',
        JSXSpreadAttribute: 'JSXSpreadAttribute',
        JSXText: 'JSXText',
        YieldExpression: 'YieldExpression',
        AwaitExpression: 'AwaitExpression'
    };

    PropertyKind = {
        Data: 1,
        Get: 2,
        Set: 4
    };

    ClassPropertyType = {
        'static': 'static',
        prototype: 'prototype'
    };

    // Error messages should be identical to V8.
    Messages = {
        UnexpectedToken: 'Unexpected token %0',
        UnexpectedNumber: 'Unexpected number',
        UnexpectedString: 'Unexpected string',
        UnexpectedIdentifier: 'Unexpected identifier',
        UnexpectedReserved: 'Unexpected reserved word',
        UnexpectedTemplate: 'Unexpected quasi %0',
        UnexpectedEOS: 'Unexpected end of input',
        NewlineAfterThrow: 'Illegal newline after throw',
        InvalidRegExp: 'Invalid regular expression',
        UnterminatedRegExp: 'Invalid regular expression: missing /',
        InvalidLHSInAssignment: 'Invalid left-hand side in assignment',
        InvalidLHSInFormalsList: 'Invalid left-hand side in formals list',
        InvalidLHSInForIn: 'Invalid left-hand side in for-in',
        MultipleDefaultsInSwitch: 'More than one default clause in switch statement',
        NoCatchOrFinally: 'Missing catch or finally after try',
        UnknownLabel: 'Undefined label \'%0\'',
        Redeclaration: '%0 \'%1\' has already been declared',
        IllegalContinue: 'Illegal continue statement',
        IllegalBreak: 'Illegal break statement',
        IllegalDuplicateClassProperty: 'Illegal duplicate property in class definition',
        IllegalClassConstructorProperty: 'Illegal constructor property in class definition',
        IllegalReturn: 'Illegal return statement',
        IllegalSpread: 'Illegal spread element',
        StrictModeWith: 'Strict mode code may not include a with statement',
        StrictCatchVariable: 'Catch variable may not be eval or arguments in strict mode',
        StrictVarName: 'Variable name may not be eval or arguments in strict mode',
        StrictParamName: 'Parameter name eval or arguments is not allowed in strict mode',
        StrictParamDupe: 'Strict mode function may not have duplicate parameter names',
        ParameterAfterRestParameter: 'Rest parameter must be final parameter of an argument list',
        DefaultRestParameter: 'Rest parameter can not have a default value',
        ElementAfterSpreadElement: 'Spread must be the final element of an element list',
        PropertyAfterSpreadProperty: 'A rest property must be the final property of an object literal',
        ObjectPatternAsRestParameter: 'Invalid rest parameter',
        ObjectPatternAsSpread: 'Invalid spread argument',
        StrictFunctionName: 'Function name may not be eval or arguments in strict mode',
        StrictOctalLiteral: 'Octal literals are not allowed in strict mode.',
        StrictDelete: 'Delete of an unqualified identifier in strict mode.',
        StrictDuplicateProperty: 'Duplicate data property in object literal not allowed in strict mode',
        AccessorDataProperty: 'Object literal may not have data and accessor property with the same name',
        AccessorGetSet: 'Object literal may not have multiple get/set accessors with the same name',
        StrictLHSAssignment: 'Assignment to eval or arguments is not allowed in strict mode',
        StrictLHSPostfix: 'Postfix increment/decrement may not have eval or arguments operand in strict mode',
        StrictLHSPrefix: 'Prefix increment/decrement may not have eval or arguments operand in strict mode',
        StrictReservedWord: 'Use of future reserved word in strict mode',
        MissingFromClause: 'Missing from clause',
        NoAsAfterImportNamespace: 'Missing as after import *',
        InvalidModuleSpecifier: 'Invalid module specifier',
        IllegalImportDeclaration: 'Illegal import declaration',
        IllegalExportDeclaration: 'Illegal export declaration',
        NoUninitializedConst: 'Const must be initialized',
        ComprehensionRequiresBlock: 'Comprehension must have at least one block',
        ComprehensionError: 'Comprehension Error',
        EachNotAllowed: 'Each is not supported',
        InvalidJSXAttributeValue: 'JSX value should be either an expression or a quoted JSX text',
        ExpectedJSXClosingTag: 'Expected corresponding JSX closing tag for %0',
        AdjacentJSXElements: 'Adjacent JSX elements must be wrapped in an enclosing tag',
        ConfusedAboutFunctionType: 'Unexpected token =>. It looks like ' +
            'you are trying to write a function type, but you ended up ' +
            'writing a grouped type followed by an =>, which is a syntax ' +
            'error. Remember, function type parameters are named so function ' +
            'types look like (name1: type1, name2: type2) => returnType. You ' +
            'probably wrote (type1) => returnType'
    };

    // See also tools/generate-unicode-regex.py.
    Regex = {
        NonAsciiIdentifierStart: new RegExp('[\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0370-\u0374\u0376\u0377\u037a-\u037d\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u048a-\u0527\u0531-\u0556\u0559\u0561-\u0587\u05d0-\u05ea\u05f0-\u05f2\u0620-\u064a\u066e\u066f\u0671-\u06d3\u06d5\u06e5\u06e6\u06ee\u06ef\u06fa-\u06fc\u06ff\u0710\u0712-\u072f\u074d-\u07a5\u07b1\u07ca-\u07ea\u07f4\u07f5\u07fa\u0800-\u0815\u081a\u0824\u0828\u0840-\u0858\u08a0\u08a2-\u08ac\u0904-\u0939\u093d\u0950\u0958-\u0961\u0971-\u0977\u0979-\u097f\u0985-\u098c\u098f\u0990\u0993-\u09a8\u09aa-\u09b0\u09b2\u09b6-\u09b9\u09bd\u09ce\u09dc\u09dd\u09df-\u09e1\u09f0\u09f1\u0a05-\u0a0a\u0a0f\u0a10\u0a13-\u0a28\u0a2a-\u0a30\u0a32\u0a33\u0a35\u0a36\u0a38\u0a39\u0a59-\u0a5c\u0a5e\u0a72-\u0a74\u0a85-\u0a8d\u0a8f-\u0a91\u0a93-\u0aa8\u0aaa-\u0ab0\u0ab2\u0ab3\u0ab5-\u0ab9\u0abd\u0ad0\u0ae0\u0ae1\u0b05-\u0b0c\u0b0f\u0b10\u0b13-\u0b28\u0b2a-\u0b30\u0b32\u0b33\u0b35-\u0b39\u0b3d\u0b5c\u0b5d\u0b5f-\u0b61\u0b71\u0b83\u0b85-\u0b8a\u0b8e-\u0b90\u0b92-\u0b95\u0b99\u0b9a\u0b9c\u0b9e\u0b9f\u0ba3\u0ba4\u0ba8-\u0baa\u0bae-\u0bb9\u0bd0\u0c05-\u0c0c\u0c0e-\u0c10\u0c12-\u0c28\u0c2a-\u0c33\u0c35-\u0c39\u0c3d\u0c58\u0c59\u0c60\u0c61\u0c85-\u0c8c\u0c8e-\u0c90\u0c92-\u0ca8\u0caa-\u0cb3\u0cb5-\u0cb9\u0cbd\u0cde\u0ce0\u0ce1\u0cf1\u0cf2\u0d05-\u0d0c\u0d0e-\u0d10\u0d12-\u0d3a\u0d3d\u0d4e\u0d60\u0d61\u0d7a-\u0d7f\u0d85-\u0d96\u0d9a-\u0db1\u0db3-\u0dbb\u0dbd\u0dc0-\u0dc6\u0e01-\u0e30\u0e32\u0e33\u0e40-\u0e46\u0e81\u0e82\u0e84\u0e87\u0e88\u0e8a\u0e8d\u0e94-\u0e97\u0e99-\u0e9f\u0ea1-\u0ea3\u0ea5\u0ea7\u0eaa\u0eab\u0ead-\u0eb0\u0eb2\u0eb3\u0ebd\u0ec0-\u0ec4\u0ec6\u0edc-\u0edf\u0f00\u0f40-\u0f47\u0f49-\u0f6c\u0f88-\u0f8c\u1000-\u102a\u103f\u1050-\u1055\u105a-\u105d\u1061\u1065\u1066\u106e-\u1070\u1075-\u1081\u108e\u10a0-\u10c5\u10c7\u10cd\u10d0-\u10fa\u10fc-\u1248\u124a-\u124d\u1250-\u1256\u1258\u125a-\u125d\u1260-\u1288\u128a-\u128d\u1290-\u12b0\u12b2-\u12b5\u12b8-\u12be\u12c0\u12c2-\u12c5\u12c8-\u12d6\u12d8-\u1310\u1312-\u1315\u1318-\u135a\u1380-\u138f\u13a0-\u13f4\u1401-\u166c\u166f-\u167f\u1681-\u169a\u16a0-\u16ea\u16ee-\u16f0\u1700-\u170c\u170e-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176c\u176e-\u1770\u1780-\u17b3\u17d7\u17dc\u1820-\u1877\u1880-\u18a8\u18aa\u18b0-\u18f5\u1900-\u191c\u1950-\u196d\u1970-\u1974\u1980-\u19ab\u19c1-\u19c7\u1a00-\u1a16\u1a20-\u1a54\u1aa7\u1b05-\u1b33\u1b45-\u1b4b\u1b83-\u1ba0\u1bae\u1baf\u1bba-\u1be5\u1c00-\u1c23\u1c4d-\u1c4f\u1c5a-\u1c7d\u1ce9-\u1cec\u1cee-\u1cf1\u1cf5\u1cf6\u1d00-\u1dbf\u1e00-\u1f15\u1f18-\u1f1d\u1f20-\u1f45\u1f48-\u1f4d\u1f50-\u1f57\u1f59\u1f5b\u1f5d\u1f5f-\u1f7d\u1f80-\u1fb4\u1fb6-\u1fbc\u1fbe\u1fc2-\u1fc4\u1fc6-\u1fcc\u1fd0-\u1fd3\u1fd6-\u1fdb\u1fe0-\u1fec\u1ff2-\u1ff4\u1ff6-\u1ffc\u2071\u207f\u2090-\u209c\u2102\u2107\u210a-\u2113\u2115\u2119-\u211d\u2124\u2126\u2128\u212a-\u212d\u212f-\u2139\u213c-\u213f\u2145-\u2149\u214e\u2160-\u2188\u2c00-\u2c2e\u2c30-\u2c5e\u2c60-\u2ce4\u2ceb-\u2cee\u2cf2\u2cf3\u2d00-\u2d25\u2d27\u2d2d\u2d30-\u2d67\u2d6f\u2d80-\u2d96\u2da0-\u2da6\u2da8-\u2dae\u2db0-\u2db6\u2db8-\u2dbe\u2dc0-\u2dc6\u2dc8-\u2dce\u2dd0-\u2dd6\u2dd8-\u2dde\u2e2f\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303c\u3041-\u3096\u309d-\u309f\u30a1-\u30fa\u30fc-\u30ff\u3105-\u312d\u3131-\u318e\u31a0-\u31ba\u31f0-\u31ff\u3400-\u4db5\u4e00-\u9fcc\ua000-\ua48c\ua4d0-\ua4fd\ua500-\ua60c\ua610-\ua61f\ua62a\ua62b\ua640-\ua66e\ua67f-\ua697\ua6a0-\ua6ef\ua717-\ua71f\ua722-\ua788\ua78b-\ua78e\ua790-\ua793\ua7a0-\ua7aa\ua7f8-\ua801\ua803-\ua805\ua807-\ua80a\ua80c-\ua822\ua840-\ua873\ua882-\ua8b3\ua8f2-\ua8f7\ua8fb\ua90a-\ua925\ua930-\ua946\ua960-\ua97c\ua984-\ua9b2\ua9cf\uaa00-\uaa28\uaa40-\uaa42\uaa44-\uaa4b\uaa60-\uaa76\uaa7a\uaa80-\uaaaf\uaab1\uaab5\uaab6\uaab9-\uaabd\uaac0\uaac2\uaadb-\uaadd\uaae0-\uaaea\uaaf2-\uaaf4\uab01-\uab06\uab09-\uab0e\uab11-\uab16\uab20-\uab26\uab28-\uab2e\uabc0-\uabe2\uac00-\ud7a3\ud7b0-\ud7c6\ud7cb-\ud7fb\uf900-\ufa6d\ufa70-\ufad9\ufb00-\ufb06\ufb13-\ufb17\ufb1d\ufb1f-\ufb28\ufb2a-\ufb36\ufb38-\ufb3c\ufb3e\ufb40\ufb41\ufb43\ufb44\ufb46-\ufbb1\ufbd3-\ufd3d\ufd50-\ufd8f\ufd92-\ufdc7\ufdf0-\ufdfb\ufe70-\ufe74\ufe76-\ufefc\uff21-\uff3a\uff41-\uff5a\uff66-\uffbe\uffc2-\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc]'),
        NonAsciiIdentifierPart: new 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\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc]'),
        LeadingZeros: new RegExp('^0+(?!$)')
    };

    // Ensure the condition is true, otherwise throw an error.
    // This is only to have a better contract semantic, i.e. another safety net
    // to catch a logic error. The condition shall be fulfilled in normal case.
    // Do NOT use this to enforce a certain condition on any user input.

    function assert(condition, message) {
        /* istanbul ignore if */
        if (!condition) {
            throw new Error('ASSERT: ' + message);
        }
    }

    function StringMap() {
        this.$data = {};
    }

    StringMap.prototype.get = function (key) {
        key = '$' + key;
        return this.$data[key];
    };

    StringMap.prototype.set = function (key, value) {
        key = '$' + key;
        this.$data[key] = value;
        return this;
    };

    StringMap.prototype.has = function (key) {
        key = '$' + key;
        return Object.prototype.hasOwnProperty.call(this.$data, key);
    };

    StringMap.prototype.delete = function (key) {
        key = '$' + key;
        return delete this.$data[key];
    };

    function isDecimalDigit(ch) {
        return (ch >= 48 && ch <= 57);   // 0..9
    }

    function isHexDigit(ch) {
        return '0123456789abcdefABCDEF'.indexOf(ch) >= 0;
    }

    function isOctalDigit(ch) {
        return '01234567'.indexOf(ch) >= 0;
    }


    // 7.2 White Space

    function isWhiteSpace(ch) {
        return (ch === 32) ||  // space
            (ch === 9) ||      // tab
            (ch === 0xB) ||
            (ch === 0xC) ||
            (ch === 0xA0) ||
            (ch >= 0x1680 && '\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\uFEFF'.indexOf(String.fromCharCode(ch)) > 0);
    }

    // 7.3 Line Terminators

    function isLineTerminator(ch) {
        return (ch === 10) || (ch === 13) || (ch === 0x2028) || (ch === 0x2029);
    }

    // 7.6 Identifier Names and Identifiers

    function isIdentifierStart(ch) {
        return (ch === 36) || (ch === 95) ||  // $ (dollar) and _ (underscore)
            (ch >= 65 && ch <= 90) ||         // A..Z
            (ch >= 97 && ch <= 122) ||        // a..z
            (ch === 92) ||                    // \ (backslash)
            ((ch >= 0x80) && Regex.NonAsciiIdentifierStart.test(String.fromCharCode(ch)));
    }

    function isIdentifierPart(ch) {
        return (ch === 36) || (ch === 95) ||  // $ (dollar) and _ (underscore)
            (ch >= 65 && ch <= 90) ||         // A..Z
            (ch >= 97 && ch <= 122) ||        // a..z
            (ch >= 48 && ch <= 57) ||         // 0..9
            (ch === 92) ||                    // \ (backslash)
            ((ch >= 0x80) && Regex.NonAsciiIdentifierPart.test(String.fromCharCode(ch)));
    }

    // 7.6.1.2 Future Reserved Words

    function isFutureReservedWord(id) {
        switch (id) {
        case 'class':
        case 'enum':
        case 'export':
        case 'extends':
        case 'import':
        case 'super':
            return true;
        default:
            return false;
        }
    }

    function isStrictModeReservedWord(id) {
        switch (id) {
        case 'implements':
        case 'interface':
        case 'package':
        case 'private':
        case 'protected':
        case 'public':
        case 'static':
        case 'yield':
        case 'let':
            return true;
        default:
            return false;
        }
    }

    function isRestrictedWord(id) {
        return id === 'eval' || id === 'arguments';
    }

    // 7.6.1.1 Keywords

    function isKeyword(id) {
        if (strict && isStrictModeReservedWord(id)) {
            return true;
        }

        // 'const' is specialized as Keyword in V8.
        // 'yield' is only treated as a keyword in strict mode.
        // 'let' is for compatiblity with SpiderMonkey and ES.next.
        // Some others are from future reserved words.

        switch (id.length) {
        case 2:
            return (id === 'if') || (id === 'in') || (id === 'do');
        case 3:
            return (id === 'var') || (id === 'for') || (id === 'new') ||
                (id === 'try') || (id === 'let');
        case 4:
            return (id === 'this') || (id === 'else') || (id === 'case') ||
                (id === 'void') || (id === 'with') || (id === 'enum');
        case 5:
            return (id === 'while') || (id === 'break') || (id === 'catch') ||
                (id === 'throw') || (id === 'const') ||
                (id === 'class') || (id === 'super');
        case 6:
            return (id === 'return') || (id === 'typeof') || (id === 'delete') ||
                (id === 'switch') || (id === 'export') || (id === 'import');
        case 7:
            return (id === 'default') || (id === 'finally') || (id === 'extends');
        case 8:
            return (id === 'function') || (id === 'continue') || (id === 'debugger');
        case 10:
            return (id === 'instanceof');
        default:
            return false;
        }
    }

    // 7.4 Comments

    function addComment(type, value, start, end, loc) {
        var comment;
        assert(typeof start === 'number', 'Comment must have valid position');

        // Because the way the actual token is scanned, often the comments
        // (if any) are skipped twice during the lexical analysis.
        // Thus, we need to skip adding a comment if the comment array already
        // handled it.
        if (state.lastCommentStart >= start) {
            return;
        }
        state.lastCommentStart = start;

        comment = {
            type: type,
            value: value
        };
        if (extra.range) {
            comment.range = [start, end];
        }
        if (extra.loc) {
            comment.loc = loc;
        }
        extra.comments.push(comment);
        if (extra.attachComment) {
            extra.leadingComments.push(comment);
            extra.trailingComments.push(comment);
        }
    }

    function skipSingleLineComment() {
        var start, loc, ch, comment;

        start = index - 2;
        loc = {
            start: {
                line: lineNumber,
                column: index - lineStart - 2
            }
        };

        while (index < length) {
            ch = source.charCodeAt(index);
            ++index;
            if (isLineTerminator(ch)) {
                if (extra.comments) {
                    comment = source.slice(start + 2, index - 1);
                    loc.end = {
                        line: lineNumber,
                        column: index - lineStart - 1
                    };
                    addComment('Line', comment, start, index - 1, loc);
                }
                if (ch === 13 && source.charCodeAt(index) === 10) {
                    ++index;
                }
                ++lineNumber;
                lineStart = index;
                return;
            }
        }

        if (extra.comments) {
            comment = source.slice(start + 2, index);
            loc.end = {
                line: lineNumber,
                column: index - lineStart
            };
            addComment('Line', comment, start, index, loc);
        }
    }

    function skipMultiLineComment() {
        var start, loc, ch, comment;

        if (extra.comments) {
            start = index - 2;
            loc = {
                start: {
                    line: lineNumber,
                    column: index - lineStart - 2
                }
            };
        }

        while (index < length) {
            ch = source.charCodeAt(index);
            if (isLineTerminator(ch)) {
                if (ch === 13 && source.charCodeAt(index + 1) === 10) {
                    ++index;
                }
                ++lineNumber;
                ++index;
                lineStart = index;
                if (index >= length) {
                    throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
                }
            } else if (ch === 42) {
                // Block comment ends with '*/' (char #42, char #47).
                if (source.charCodeAt(index + 1) === 47) {
                    ++index;
                    ++index;
                    if (extra.comments) {
                        comment = source.slice(start + 2, index - 2);
                        loc.end = {
                            line: lineNumber,
                            column: index - lineStart
                        };
                        addComment('Block', comment, start, index, loc);
                    }
                    return;
                }
                ++index;
            } else {
                ++index;
            }
        }

        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
    }

    function skipComment() {
        var ch;

        while (index < length) {
            ch = source.charCodeAt(index);

            if (isWhiteSpace(ch)) {
                ++index;
            } else if (isLineTerminator(ch)) {
                ++index;
                if (ch === 13 && source.charCodeAt(index) === 10) {
                    ++index;
                }
                ++lineNumber;
                lineStart = index;
            } else if (ch === 47) { // 47 is '/'
                ch = source.charCodeAt(index + 1);
                if (ch === 47) {
                    ++index;
                    ++index;
                    skipSingleLineComment();
                } else if (ch === 42) {  // 42 is '*'
                    ++index;
                    ++index;
                    skipMultiLineComment();
                } else {
                    break;
                }
            } else {
                break;
            }
        }
    }

    function scanHexEscape(prefix) {
        var i, len, ch, code = 0;

        len = (prefix === 'u') ? 4 : 2;
        for (i = 0; i < len; ++i) {
            if (index < length && isHexDigit(source[index])) {
                ch = source[index++];
                code = code * 16 + '0123456789abcdef'.indexOf(ch.toLowerCase());
            } else {
                return '';
            }
        }
        return String.fromCharCode(code);
    }

    function scanUnicodeCodePointEscape() {
        var ch, code, cu1, cu2;

        ch = source[index];
        code = 0;

        // At least, one hex digit is required.
        if (ch === '}') {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        while (index < length) {
            ch = source[index++];
            if (!isHexDigit(ch)) {
                break;
            }
            code = code * 16 + '0123456789abcdef'.indexOf(ch.toLowerCase());
        }

        if (code > 0x10FFFF || ch !== '}') {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        // UTF-16 Encoding
        if (code <= 0xFFFF) {
            return String.fromCharCode(code);
        }
        cu1 = ((code - 0x10000) >> 10) + 0xD800;
        cu2 = ((code - 0x10000) & 1023) + 0xDC00;
        return String.fromCharCode(cu1, cu2);
    }

    function getEscapedIdentifier() {
        var ch, id;

        ch = source.charCodeAt(index++);
        id = String.fromCharCode(ch);

        // '\u' (char #92, char #117) denotes an escaped character.
        if (ch === 92) {
            if (source.charCodeAt(index) !== 117) {
                throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
            }
            ++index;
            ch = scanHexEscape('u');
            if (!ch || ch === '\\' || !isIdentifierStart(ch.charCodeAt(0))) {
                throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
            }
            id = ch;
        }

        while (index < length) {
            ch = source.charCodeAt(index);
            if (!isIdentifierPart(ch)) {
                break;
            }
            ++index;
            id += String.fromCharCode(ch);

            // '\u' (char #92, char #117) denotes an escaped character.
            if (ch === 92) {
                id = id.substr(0, id.length - 1);
                if (source.charCodeAt(index) !== 117) {
                    throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
                }
                ++index;
                ch = scanHexEscape('u');
                if (!ch || ch === '\\' || !isIdentifierPart(ch.charCodeAt(0))) {
                    throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
                }
                id += ch;
            }
        }

        return id;
    }

    function getIdentifier() {
        var start, ch;

        start = index++;
        while (index < length) {
            ch = source.charCodeAt(index);
            if (ch === 92) {
                // Blackslash (char #92) marks Unicode escape sequence.
                index = start;
                return getEscapedIdentifier();
            }
            if (isIdentifierPart(ch)) {
                ++index;
            } else {
                break;
            }
        }

        return source.slice(start, index);
    }

    function scanIdentifier() {
        var start, id, type;

        start = index;

        // Backslash (char #92) starts an escaped character.
        id = (source.charCodeAt(index) === 92) ? getEscapedIdentifier() : getIdentifier();

        // There is no keyword or literal with only one character.
        // Thus, it must be an identifier.
        if (id.length === 1) {
            type = Token.Identifier;
        } else if (isKeyword(id)) {
            type = Token.Keyword;
        } else if (id === 'null') {
            type = Token.NullLiteral;
        } else if (id === 'true' || id === 'false') {
            type = Token.BooleanLiteral;
        } else {
            type = Token.Identifier;
        }

        return {
            type: type,
            value: id,
            lineNumber: lineNumber,
            lineStart: lineStart,
            range: [start, index]
        };
    }


    // 7.7 Punctuators

    function scanPunctuator() {
        var start = index,
            code = source.charCodeAt(index),
            code2,
            ch1 = source[index],
            ch2,
            ch3,
            ch4;

        if (state.inJSXTag || state.inJSXChild) {
            // Don't need to check for '{' and '}' as it's already handled
            // correctly by default.
            switch (code) {
            case 60:  // <
            case 62:  // >
                ++index;
                return {
                    type: Token.Punctuator,
                    value: String.fromCharCode(code),
                    lineNumber: lineNumber,
                    lineStart: lineStart,
                    range: [start, index]
                };
            }
        }

        switch (code) {
        // Check for most common single-character punctuators.
        case 40:   // ( open bracket
        case 41:   // ) close bracket
        case 59:   // ; semicolon
        case 44:   // , comma
        case 91:   // [
        case 93:   // ]
        case 58:   // :
        case 63:   // ?
        case 126:  // ~
            ++index;
            if (extra.tokenize && code === 40) {
                extra.openParenToken = extra.tokens.length;
            }

            return {
                type: Token.Punctuator,
                value: String.fromCharCode(code),
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };

        case 123:  // { open curly brace
        case 125:  // } close curly brace
            ++index;
            if (extra.tokenize && code === 123) {
                extra.openCurlyToken = extra.tokens.length;
            }

            // lookahead2 function can cause tokens to be scanned twice and in doing so
            // would wreck the curly stack by pushing the same token onto the stack twice.
            // curlyLastIndex ensures each token is pushed or popped exactly once
            if (index > state.curlyLastIndex) {
                state.curlyLastIndex = index;
                if (code === 123) {
                    state.curlyStack.push('{');
                } else {
                    state.curlyStack.pop();
                }
            }

            return {
                type: Token.Punctuator,
                value: String.fromCharCode(code),
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };

        default:
            code2 = source.charCodeAt(index + 1);

            // '=' (char #61) marks an assignment or comparison operator.
            if (code2 === 61) {
                switch (code) {
                case 37:  // %
                case 38:  // &
                case 42:  // *:
                case 43:  // +
                case 45:  // -
                case 47:  // /
                case 60:  // <
                case 62:  // >
                case 94:  // ^
                case 124: // |
                    index += 2;
                    return {
                        type: Token.Punctuator,
                        value: String.fromCharCode(code) + String.fromCharCode(code2),
                        lineNumber: lineNumber,
                        lineStart: lineStart,
                        range: [start, index]
                    };

                case 33: // !
                case 61: // =
                    index += 2;

                    // !== and ===
                    if (source.charCodeAt(index) === 61) {
                        ++index;
                    }
                    return {
                        type: Token.Punctuator,
                        value: source.slice(start, index),
                        lineNumber: lineNumber,
                        lineStart: lineStart,
                        range: [start, index]
                    };
                default:
                    break;
                }
            }
            break;
        }

        // Peek more characters.

        ch2 = source[index + 1];
        ch3 = source[index + 2];
        ch4 = source[index + 3];

        // 4-character punctuator: >>>=

        if (ch1 === '>' && ch2 === '>' && ch3 === '>') {
            if (ch4 === '=') {
                index += 4;
                return {
                    type: Token.Punctuator,
                    value: '>>>=',
                    lineNumber: lineNumber,
                    lineStart: lineStart,
                    range: [start, index]
                };
            }
        }

        // 3-character punctuators: === !== >>> <<= >>=

        if (ch1 === '>' && ch2 === '>' && ch3 === '>' && !state.inType) {
            index += 3;
            return {
                type: Token.Punctuator,
                value: '>>>',
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }

        if (ch1 === '<' && ch2 === '<' && ch3 === '=') {
            index += 3;
            return {
                type: Token.Punctuator,
                value: '<<=',
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }

        if (ch1 === '>' && ch2 === '>' && ch3 === '=') {
            index += 3;
            return {
                type: Token.Punctuator,
                value: '>>=',
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }

        if (ch1 === '.' && ch2 === '.' && ch3 === '.') {
            index += 3;
            return {
                type: Token.Punctuator,
                value: '...',
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }

        // Other 2-character punctuators: ++ -- << >> && ||

        // Don't match these tokens if we're in a type, since they never can
        // occur and can mess up types like Map<string, Array<string>>
        if (ch1 === ch2 && ('+-<>&|'.indexOf(ch1) >= 0) && !state.inType) {
            index += 2;
            return {
                type: Token.Punctuator,
                value: ch1 + ch2,
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }

        if (ch1 === '=' && ch2 === '>') {
            index += 2;
            return {
                type: Token.Punctuator,
                value: '=>',
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }

        if ('<>=!+-*%&|^/'.indexOf(ch1) >= 0) {
            ++index;
            return {
                type: Token.Punctuator,
                value: ch1,
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }

        if (ch1 === '.') {
            ++index;
            return {
                type: Token.Punctuator,
                value: ch1,
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }

        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
    }

    // 7.8.3 Numeric Literals

    function scanHexLiteral(start) {
        var number = '';

        while (index < length) {
            if (!isHexDigit(source[index])) {
                break;
            }
            number += source[index++];
        }

        if (number.length === 0) {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        if (isIdentifierStart(source.charCodeAt(index))) {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        return {
            type: Token.NumericLiteral,
            value: parseInt('0x' + number, 16),
            lineNumber: lineNumber,
            lineStart: lineStart,
            range: [start, index]
        };
    }

    function scanBinaryLiteral(start) {
        var ch, number;

        number = '';

        while (index < length) {
            ch = source[index];
            if (ch !== '0' && ch !== '1') {
                break;
            }
            number += source[index++];
        }

        if (number.length === 0) {
            // only 0b or 0B
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        if (index < length) {
            ch = source.charCodeAt(index);
            /* istanbul ignore else */
            if (isIdentifierStart(ch) || isDecimalDigit(ch)) {
                throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
            }
        }

        return {
            type: Token.NumericLiteral,
            value: parseInt(number, 2),
            lineNumber: lineNumber,
            lineStart: lineStart,
            range: [start, index]
        };
    }

    function scanOctalLiteral(prefix, start) {
        var number, octal;

        if (isOctalDigit(prefix)) {
            octal = true;
            number = '0' + source[index++];
        } else {
            octal = false;
            ++index;
            number = '';
        }

        while (index < length) {
            if (!isOctalDigit(source[index])) {
                break;
            }
            number += source[index++];
        }

        if (!octal && number.length === 0) {
            // only 0o or 0O
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        if (isIdentifierStart(source.charCodeAt(index)) || isDecimalDigit(source.charCodeAt(index))) {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        return {
            type: Token.NumericLiteral,
            value: parseInt(number, 8),
            octal: octal,
            lineNumber: lineNumber,
            lineStart: lineStart,
            range: [start, index]
        };
    }

    function scanNumericLiteral() {
        var number, start, ch;

        ch = source[index];
        assert(isDecimalDigit(ch.charCodeAt(0)) || (ch === '.'),
            'Numeric literal must start with a decimal digit or a decimal point');

        start = index;
        number = '';
        if (ch !== '.') {
            number = source[index++];
            ch = source[index];

            // Hex number starts with '0x'.
            // Octal number starts with '0'.
            // Octal number in ES6 starts with '0o'.
            // Binary number in ES6 starts with '0b'.
            if (number === '0') {
                if (ch === 'x' || ch === 'X') {
                    ++index;
                    return scanHexLiteral(start);
                }
                if (ch === 'b' || ch === 'B') {
                    ++index;
                    return scanBinaryLiteral(start);
                }
                if (ch === 'o' || ch === 'O' || isOctalDigit(ch)) {
                    return scanOctalLiteral(ch, start);
                }
                // decimal number starts with '0' such as '09' is illegal.
                if (ch && isDecimalDigit(ch.charCodeAt(0))) {
                    throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
                }
            }

            while (isDecimalDigit(source.charCodeAt(index))) {
                number += source[index++];
            }
            ch = source[index];
        }

        if (ch === '.') {
            number += source[index++];
            while (isDecimalDigit(source.charCodeAt(index))) {
                number += source[index++];
            }
            ch = source[index];
        }

        if (ch === 'e' || ch === 'E') {
            number += source[index++];

            ch = source[index];
            if (ch === '+' || ch === '-') {
                number += source[index++];
            }
            if (isDecimalDigit(source.charCodeAt(index))) {
                while (isDecimalDigit(source.charCodeAt(index))) {
                    number += source[index++];
                }
            } else {
                throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
            }
        }

        if (isIdentifierStart(source.charCodeAt(index))) {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        return {
            type: Token.NumericLiteral,
            value: parseFloat(number),
            lineNumber: lineNumber,
            lineStart: lineStart,
            range: [start, index]
        };
    }

    // 7.8.4 String Literals

    function scanStringLiteral() {
        var str = '', quote, start, ch, code, unescaped, restore, octal = false;

        quote = source[index];
        assert((quote === '\'' || quote === '"'),
            'String literal must starts with a quote');

        start = index;
        ++index;

        while (index < length) {
            ch = source[index++];

            if (ch === quote) {
                quote = '';
                break;
            } else if (ch === '\\') {
                ch = source[index++];
                if (!ch || !isLineTerminator(ch.charCodeAt(0))) {
                    switch (ch) {
                    case 'n':
                        str += '\n';
                        break;
                    case 'r':
                        str += '\r';
                        break;
                    case 't':
                        str += '\t';
                        break;
                    case 'u':
                    case 'x':
                        if (source[index] === '{') {
                            ++index;
                            str += scanUnicodeCodePointEscape();
                        } else {
                            restore = index;
                            unescaped = scanHexEscape(ch);
                            if (unescaped) {
                                str += unescaped;
                            } else {
                                index = restore;
                                str += ch;
                            }
                        }
                        break;
                    case 'b':
                        str += '\b';
                        break;
                    case 'f':
                        str += '\f';
                        break;
                    case 'v':
                        str += '\x0B';
                        break;

                    default:
                        if (isOctalDigit(ch)) {
                            code = '01234567'.indexOf(ch);

                            // \0 is not octal escape sequence
                            if (code !== 0) {
                                octal = true;
                            }

                            /* istanbul ignore else */
                            if (index < length && isOctalDigit(source[index])) {
                                octal = true;
                                code = code * 8 + '01234567'.indexOf(source[index++]);

                                // 3 digits are only allowed when string starts
                                // with 0, 1, 2, 3
                                if ('0123'.indexOf(ch) >= 0 &&
                                        index < length &&
                                        isOctalDigit(source[index])) {
                                    code = code * 8 + '01234567'.indexOf(source[index++]);
                                }
                            }
                            str += String.fromCharCode(code);
                        } else {
                            str += ch;
                        }
                        break;
                    }
                } else {
                    ++lineNumber;
                    if (ch === '\r' && source[index] === '\n') {
                        ++index;
                    }
                    lineStart = index;
                }
            } else if (isLineTerminator(ch.charCodeAt(0))) {
                break;
            } else {
                str += ch;
            }
        }

        if (quote !== '') {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        return {
            type: Token.StringLiteral,
            value: str,
            octal: octal,
            lineNumber: lineNumber,
            lineStart: lineStart,
            range: [start, index]
        };
    }

    function scanTemplate() {
        var cooked = '', ch, start, terminated, head, tail, restore, unescaped, code, octal;

        terminated = false;
        tail = false;
        start = index;
        head = (source[index] === '`');

        ++index;

        while (index < length) {
            ch = source[index++];
            if (ch === '`') {
                tail = true;
                terminated = true;
                break;
            } else if (ch === '$') {
                if (source[index] === '{') {
                    ++index;
                    terminated = true;
                    break;
                }
                cooked += ch;
            } else if (ch === '\\') {
                ch = source[index++];
                if (!isLineTerminator(ch.charCodeAt(0))) {
                    switch (ch) {
                    case 'n':
                        cooked += '\n';
                        break;
                    case 'r':
                        cooked += '\r';
                        break;
                    case 't':
                        cooked += '\t';
                        break;
                    case 'u':
                    case 'x':
                        if (source[index] === '{') {
                            ++index;
                            cooked += scanUnicodeCodePointEscape();
                        } else {
                            restore = index;
                            unescaped = scanHexEscape(ch);
                            if (unescaped) {
                                cooked += unescaped;
                            } else {
                                index = restore;
                                cooked += ch;
                            }
                        }
                        break;
                    case 'b':
                        cooked += '\b';
                        break;
                    case 'f':
                        cooked += '\f';
                        break;
                    case 'v':
                        cooked += '\v';
                        break;

                    default:
                        if (isOctalDigit(ch)) {
                            code = '01234567'.indexOf(ch);

                            // \0 is not octal escape sequence
                            if (code !== 0) {
                                octal = true;
                            }

                            /* istanbul ignore else */
                            if (index < length && isOctalDigit(source[index])) {
                                octal = true;
                                code = code * 8 + '01234567'.indexOf(source[index++]);

                                // 3 digits are only allowed when string starts
                                // with 0, 1, 2, 3
                                if ('0123'.indexOf(ch) >= 0 &&
                                        index < length &&
                                        isOctalDigit(source[index])) {
                                    code = code * 8 + '01234567'.indexOf(source[index++]);
                                }
                            }
                            cooked += String.fromCharCode(code);
                        } else {
                            cooked += ch;
                        }
                        break;
                    }
                } else {
                    ++lineNumber;
                    if (ch === '\r' && source[index] === '\n') {
                        ++index;
                    }
                    lineStart = index;
                }
            } else if (isLineTerminator(ch.charCodeAt(0))) {
                ++lineNumber;
                if (ch === '\r' && source[index] === '\n') {
                    ++index;
                }
                lineStart = index;
                cooked += '\n';
            } else {
                cooked += ch;
            }
        }

        if (!terminated) {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        if (index > state.curlyLastIndex) {
            state.curlyLastIndex = index;
            if (!tail) {
                state.curlyStack.push('template');
            }

            if (!head) {
                state.curlyStack.pop();
            }
        }

        return {
            type: Token.Template,
            value: {
                cooked: cooked,
                raw: source.slice(start + 1, index - ((tail) ? 1 : 2))
            },
            head: head,
            tail: tail,
            octal: octal,
            lineNumber: lineNumber,
            lineStart: lineStart,
            range: [start, index]
        };
    }

    function testRegExp(pattern, flags) {
        var tmp = pattern,
            value;

        if (flags.indexOf('u') >= 0) {
            // Replace each astral symbol and every Unicode code point
            // escape sequence with a single ASCII symbol to avoid throwing on
            // regular expressions that are only valid in combination with the
            // `/u` flag.
            // Note: replacing with the ASCII symbol `x` might cause false
            // negatives in unlikely scenarios. For example, `[\u{61}-b]` is a
            // perfectly valid pattern that is equivalent to `[a-b]`, but it
            // would be replaced by `[x-b]` which throws an error.
            tmp = tmp
                .replace(/\\u\{([0-9a-fA-F]+)\}/g, function ($0, $1) {
                    if (parseInt($1, 16) <= 0x10FFFF) {
                        return 'x';
                    }
                    throwError({}, Messages.InvalidRegExp);
                })
                .replace(/[\uD800-\uDBFF][\uDC00-\uDFFF]/g, 'x');
        }

        // First, detect invalid regular expressions.
        try {
            value = new RegExp(tmp);
        } catch (e) {
            throwError({}, Messages.InvalidRegExp);
        }

        // Return a regular expression object for this pattern-flag pair, or
        // `null` in case the current environment doesn't support the flags it
        // uses.
        try {
            return new RegExp(pattern, flags);
        } catch (exception) {
            return null;
        }
    }

    function scanRegExpBody() {
        var ch, str, classMarker, terminated, body;

        ch = source[index];
        assert(ch === '/', 'Regular expression literal must start with a slash');
        str = source[index++];

        classMarker = false;
        terminated = false;
        while (index < length) {
            ch = source[index++];
            str += ch;
            if (ch === '\\') {
                ch = source[index++];
                // ECMA-262 7.8.5
                if (isLineTerminator(ch.charCodeAt(0))) {
                    throwError({}, Messages.UnterminatedRegExp);
                }
                str += ch;
            } else if (isLineTerminator(ch.charCodeAt(0))) {
                throwError({}, Messages.UnterminatedRegExp);
            } else if (classMarker) {
                if (ch === ']') {
                    classMarker = false;
                }
            } else {
                if (ch === '/') {
                    terminated = true;
                    break;
                } else if (ch === '[') {
                    classMarker = true;
                }
            }
        }

        if (!terminated) {
            throwError({}, Messages.UnterminatedRegExp);
        }

        // Exclude leading and trailing slash.
        body = str.substr(1, str.length - 2);
        return {
            value: body,
            literal: str
        };
    }

    function scanRegExpFlags() {
        var ch, str, flags, restore;

        str = '';
        flags = '';
        while (index < length) {
            ch = source[index];
            if (!isIdentifierPart(ch.charCodeAt(0))) {
                break;
            }

            ++index;
            if (ch === '\\' && index < length) {
                ch = source[index];
                if (ch === 'u') {
                    ++index;
                    restore = index;
                    ch = scanHexEscape('u');
                    if (ch) {
                        flags += ch;
                        for (str += '\\u'; restore < index; ++restore) {
                            str += source[restore];
                        }
                    } else {
                        index = restore;
                        flags += 'u';
                        str += '\\u';
                    }
                    throwErrorTolerant({}, Messages.UnexpectedToken, 'ILLEGAL');
                } else {
                    str += '\\';
                    throwErrorTolerant({}, Messages.UnexpectedToken, 'ILLEGAL');
                }
            } else {
                flags += ch;
                str += ch;
            }
        }

        return {
            value: flags,
            literal: str
        };
    }

    function scanRegExp() {
        var start, body, flags, value;

        lookahead = null;
        skipComment();
        start = index;

        body = scanRegExpBody();
        flags = scanRegExpFlags();
        value = testRegExp(body.value, flags.value);

        if (extra.tokenize) {
            return {
                type: Token.RegularExpression,
                value: value,
                regex: {
                    pattern: body.value,
                    flags: flags.value
                },
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [start, index]
            };
        }

        return {
            literal: body.literal + flags.literal,
            value: value,
            regex: {
                pattern: body.value,
                flags: flags.value
            },
            range: [start, index]
        };
    }

    function isIdentifierName(token) {
        return token.type === Token.Identifier ||
            token.type === Token.Keyword ||
            token.type === Token.BooleanLiteral ||
            token.type === Token.NullLiteral;
    }

    function advanceSlash() {
        var prevToken,
            checkToken;
        // Using the following algorithm:
        // https://github.com/mozilla/sweet.js/wiki/design
        prevToken = extra.tokens[extra.tokens.length - 1];
        if (!prevToken) {
            // Nothing before that: it cannot be a division.
            return scanRegExp();
        }
        if (prevToken.type === 'Punctuator') {
            if (prevToken.value === ')') {
                checkToken = extra.tokens[extra.openParenToken - 1];
                if (checkToken &&
                        checkToken.type === 'Keyword' &&
                        (checkToken.value === 'if' ||
                         checkToken.value === 'while' ||
                         checkToken.value === 'for' ||
                         checkToken.value === 'with')) {
                    return scanRegExp();
                }
                return scanPunctuator();
            }
            if (prevToken.value === '}') {
                // Dividing a function by anything makes little sense,
                // but we have to check for that.
                if (extra.tokens[extra.openCurlyToken - 3] &&
                        extra.tokens[extra.openCurlyToken - 3].type === 'Keyword') {
                    // Anonymous function.
                    checkToken = extra.tokens[extra.openCurlyToken - 4];
                    if (!checkToken) {
                        return scanPunctuator();
                    }
                } else if (extra.tokens[extra.openCurlyToken - 4] &&
                        extra.tokens[extra.openCurlyToken - 4].type === 'Keyword') {
                    // Named function.
                    checkToken = extra.tokens[extra.openCurlyToken - 5];
                    if (!checkToken) {
                        return scanRegExp();
                    }
                } else {
                    return scanPunctuator();
                }
                // checkToken determines whether the function is
                // a declaration or an expression.
                if (FnExprTokens.indexOf(checkToken.value) >= 0) {
                    // It is an expression.
                    return scanPunctuator();
                }
                // It is a declaration.
                return scanRegExp();
            }
            return scanRegExp();
        }
        if (prevToken.type === 'Keyword' && prevToken.value !== 'this') {
            return scanRegExp();
        }
        return scanPunctuator();
    }

    function advance() {
        var ch;

        if (!state.inJSXChild) {
            skipComment();
        }

        if (index >= length) {
            return {
                type: Token.EOF,
                lineNumber: lineNumber,
                lineStart: lineStart,
                range: [index, index]
            };
        }

        if (state.inJSXChild) {
            return advanceJSXChild();
        }

        ch = source.charCodeAt(index);

        // Very common: ( and ) and ;
        if (ch === 40 || ch === 41 || ch === 58) {
            return scanPunctuator();
        }

        // String literal starts with single quote (#39) or double quote (#34).
        if (ch === 39 || ch === 34) {
            if (state.inJSXTag) {
                return scanJSXStringLiteral();
            }
            return scanStringLiteral();
        }

        if (state.inJSXTag && isJSXIdentifierStart(ch)) {
            return scanJSXIdentifier();
        }

        // Template literals start with backtick (#96) for template head
        // or close curly (#125) for template middle or template tail.
        if (ch === 96 || (ch === 125 && state.curlyStack[state.curlyStack.length - 1] === 'template')) {
            return scanTemplate();
        }
        if (isIdentifierStart(ch)) {
            return scanIdentifier();
        }

        // Dot (.) char #46 can also start a floating-point number, hence the need
        // to check the next character.
        if (ch === 46) {
            if (isDecimalDigit(source.charCodeAt(index + 1))) {
                return scanNumericLiteral();
            }
            return scanPunctuator();
        }

        if (isDecimalDigit(ch)) {
            return scanNumericLiteral();
        }

        // Slash (/) char #47 can also start a regex.
        if (extra.tokenize && ch === 47) {
            return advanceSlash();
        }

        return scanPunctuator();
    }

    function lex() {
        var token;

        token = lookahead;
        index = token.range[1];
        lineNumber = token.lineNumber;
        lineStart = token.lineStart;

        lookahead = advance();

        index = token.range[1];
        lineNumber = token.lineNumber;
        lineStart = token.lineStart;

        return token;
    }

    function peek() {
        var pos, line, start;

        pos = index;
        line = lineNumber;
        start = lineStart;
        lookahead = advance();
        index = pos;
        lineNumber = line;
        lineStart = start;
    }

    function lookahead2() {
        var adv, pos, line, start, result;

        // If we are collecting the tokens, don't grab the next one yet.
        /* istanbul ignore next */
        adv = (typeof extra.advance === 'function') ? extra.advance : advance;

        pos = index;
        line = lineNumber;
        start = lineStart;

        // Scan for the next immediate token.
        /* istanbul ignore if */
        if (lookahead === null) {
            lookahead = adv();
        }
        index = lookahead.range[1];
        lineNumber = lookahead.lineNumber;
        lineStart = lookahead.lineStart;

        // Grab the token right after.
        result = adv();
        index = pos;
        lineNumber = line;
        lineStart = start;

        return result;
    }

    function rewind(token) {
        index = token.range[0];
        lineNumber = token.lineNumber;
        lineStart = token.lineStart;
        lookahead = token;
    }

    function markerCreate() {
        if (!extra.loc && !extra.range) {
            return undefined;
        }
        skipComment();
        return {offset: index, line: lineNumber, col: index - lineStart};
    }

    function markerCreatePreserveWhitespace() {
        if (!extra.loc && !extra.range) {
            return undefined;
        }
        return {offset: index, line: lineNumber, col: index - lineStart};
    }

    function processComment(node) {
        var lastChild,
            trailingComments,
            bottomRight = extra.bottomRightStack,
            last = bottomRight[bottomRight.length - 1];

        if (node.type === Syntax.Program) {
            /* istanbul ignore else */
            if (node.body.length > 0) {
                return;
            }
        }

        if (extra.trailingComments.length > 0) {
            if (extra.trailingComments[0].range[0] >= node.range[1]) {
                trailingComments = extra.trailingComments;
                extra.trailingComments = [];
            } else {
                extra.trailingComments.length = 0;
            }
        } else {
            if (last && last.trailingComments && last.trailingComments[0].range[0] >= node.range[1]) {
                trailingComments = last.trailingComments;
                delete last.trailingComments;
            }
        }

        // Eating the stack.
        if (last) {
            while (last && last.range[0] >= node.range[0]) {
                lastChild = last;
                last = bottomRight.pop();
            }
        }

        if (lastChild) {
            if (lastChild.leadingComments && lastChild.leadingComments[lastChild.leadingComments.length - 1].range[1] <= node.range[0]) {
                node.leadingComments = lastChild.leadingComments;
                delete lastChild.leadingComments;
            }
        } else if (extra.leadingComments.length > 0 && extra.leadingComments[extra.leadingComments.length - 1].range[1] <= node.range[0]) {
            node.leadingComments = extra.leadingComments;
            extra.leadingComments = [];
        }

        if (trailingComments) {
            node.trailingComments = trailingComments;
        }

        bottomRight.push(node);
    }

    function markerApply(marker, node) {
        if (extra.range) {
            node.range = [marker.offset, index];
        }
        if (extra.loc) {
            node.loc = {
                start: {
                    line: marker.line,
                    column: marker.col
                },
                end: {
                    line: lineNumber,
                    column: index - lineStart
                }
            };
            node = delegate.postProcess(node);
        }
        if (extra.attachComment) {
            processComment(node);
        }
        return node;
    }

    SyntaxTreeDelegate = {

        name: 'SyntaxTree',

        postProcess: function (node) {
            return node;
        },

        createArrayExpression: function (elements) {
            return {
                type: Syntax.ArrayExpression,
                elements: elements
            };
        },

        createAssignmentExpression: function (operator, left, right) {
            return {
                type: Syntax.AssignmentExpression,
                operator: operator,
                left: left,
                right: right
            };
        },

        createBinaryExpression: function (operator, left, right) {
            var type = (operator === '||' || operator === '&&') ? Syntax.LogicalExpression :
                        Syntax.BinaryExpression;
            return {
                type: type,
                operator: operator,
                left: left,
                right: right
            };
        },

        createBlockStatement: function (body) {
            return {
                type: Syntax.BlockStatement,
                body: body
            };
        },

        createBreakStatement: function (label) {
            return {
                type: Syntax.BreakStatement,
                label: label
            };
        },

        createCallExpression: function (callee, args) {
            return {
                type: Syntax.CallExpression,
                callee: callee,
                'arguments': args
            };
        },

        createCatchClause: function (param, body) {
            return {
                type: Syntax.CatchClause,
                param: param,
                body: body
            };
        },

        createConditionalExpression: function (test, consequent, alternate) {
            return {
                type: Syntax.ConditionalExpression,
                test: test,
                consequent: consequent,
                alternate: alternate
            };
        },

        createContinueStatement: function (label) {
            return {
                type: Syntax.ContinueStatement,
                label: label
            };
        },

        createDebuggerStatement: function () {
            return {
                type: Syntax.DebuggerStatement
            };
        },

        createDoWhileStatement: function (body, test) {
            return {
                type: Syntax.DoWhileStatement,
                body: body,
                test: test
            };
        },

        createEmptyStatement: function () {
            return {
                type: Syntax.EmptyStatement
            };
        },

        createExpressionStatement: function (expression) {
            return {
                type: Syntax.ExpressionStatement,
                expression: expression
            };
        },

        createForStatement: function (init, test, update, body) {
            return {
                type: Syntax.ForStatement,
                init: init,
                test: test,
                update: update,
                body: body
            };
        },

        createForInStatement: function (left, right, body) {
            return {
                type: Syntax.ForInStatement,
                left: left,
                right: right,
                body: body,
                each: false
            };
        },

        createForOfStatement: function (left, right, body) {
            return {
                type: Syntax.ForOfStatement,
                left: left,
                right: right,
                body: body
            };
        },

        createFunctionDeclaration: function (id, params, defaults, body, rest, generator, expression,
                                             isAsync, returnType, typeParameters) {
            var funDecl = {
                type: Syntax.FunctionDeclaration,
                id: id,
                params: params,
                defaults: defaults,
                body: body,
                rest: rest,
                generator: generator,
                expression: expression,
                returnType: returnType,
                typeParameters: typeParameters
            };

            if (isAsync) {
                funDecl.async = true;
            }

            return funDecl;
        },

        createFunctionExpression: function (id, params, defaults, body, rest, generator, expression,
                                            isAsync, returnType, typeParameters) {
            var funExpr = {
                type: Syntax.FunctionExpression,
                id: id,
                params: params,
                defaults: defaults,
                body: body,
                rest: rest,
                generator: generator,
                expression: expression,
                returnType: returnType,
                typeParameters: typeParameters
            };

            if (isAsync) {
                funExpr.async = true;
            }

            return funExpr;
        },

        createIdentifier: function (name) {
            return {
                type: Syntax.Identifier,
                name: name,
                // Only here to initialize the shape of the object to ensure
                // that the 'typeAnnotation' key is ordered before others that
                // are added later (like 'loc' and 'range'). This just helps
                // keep the shape of Identifier nodes consistent with everything
                // else.
                typeAnnotation: undefined,
                optional: undefined
            };
        },

        createTypeAnnotation: function (typeAnnotation) {
            return {
                type: Syntax.TypeAnnotation,
                typeAnnotation: typeAnnotation
            };
        },

        createTypeCast: function (expression, typeAnnotation) {
            return {
                type: Syntax.TypeCastExpression,
                expression: expression,
                typeAnnotation: typeAnnotation
            };
        },

        createFunctionTypeAnnotation: function (params, returnType, rest, typeParameters) {
            return {
                type: Syntax.FunctionTypeAnnotation,
                params: params,
                returnType: returnType,
                rest: rest,
                typeParameters: typeParameters
            };
        },

        createFunctionTypeParam: function (name, typeAnnotation, optional) {
            return {
                type: Syntax.FunctionTypeParam,
                name: name,
                typeAnnotation: typeAnnotation,
                optional: optional
            };
        },

        createNullableTypeAnnotation: function (typeAnnotation) {
            return {
                type: Syntax.NullableTypeAnnotation,
                typeAnnotation: typeAnnotation
            };
        },

        createArrayTypeAnnotation: function (elementType) {
            return {
                type: Syntax.ArrayTypeAnnotation,
                elementType: elementType
            };
        },

        createGenericTypeAnnotation: function (id, typeParameters) {
            return {
                type: Syntax.GenericTypeAnnotation,
                id: id,
                typeParameters: typeParameters
            };
        },

        createQualifiedTypeIdentifier: function (qualification, id) {
            return {
                type: Syntax.QualifiedTypeIdentifier,
                qualification: qualification,
                id: id
            };
        },

        createTypeParameterDeclaration: function (params) {
            return {
                type: Syntax.TypeParameterDeclaration,
                params: params
            };
        },

        createTypeParameterInstantiation: function (params) {
            return {
                type: Syntax.TypeParameterInstantiation,
                params: params
            };
        },

        createAnyTypeAnnotation: function () {
            return {
                type: Syntax.AnyTypeAnnotation
            };
        },

        createBooleanTypeAnnotation: function () {
            return {
                type: Syntax.BooleanTypeAnnotation
            };
        },

        createNumberTypeAnnotation: function () {
            return {
                type: Syntax.NumberTypeAnnotation
            };
        },

        createStringTypeAnnotation: function () {
            return {
                type: Syntax.StringTypeAnnotation
            };
        },

        createStringLiteralTypeAnnotation: function (token) {
            return {
                type: Syntax.StringLiteralTypeAnnotation,
                value: token.value,
                raw: source.slice(token.range[0], token.range[1])
            };
        },

        createVoidTypeAnnotation: function () {
            return {
                type: Syntax.VoidTypeAnnotation
            };
        },

        createTypeofTypeAnnotation: function (argument) {
            return {
                type: Syntax.TypeofTypeAnnotation,
                argument: argument
            };
        },

        createTupleTypeAnnotation: function (types) {
            return {
                type: Syntax.TupleTypeAnnotation,
                types: types
            };
        },

        createObjectTypeAnnotation: function (properties, indexers, callProperties) {
            return {
                type: Syntax.ObjectTypeAnnotation,
                properties: properties,
                indexers: indexers,
                callProperties: callProperties
            };
        },

        createObjectTypeIndexer: function (id, key, value, isStatic) {
            return {
                type: Syntax.ObjectTypeIndexer,
                id: id,
                key: key,
                value: value,
                static: isStatic
            };
        },

        createObjectTypeCallProperty: function (value, isStatic) {
            return {
                type: Syntax.ObjectTypeCallProperty,
                value: value,
                static: isStatic
            };
        },

        createObjectTypeProperty: function (key, value, optional, isStatic) {
            return {
                type: Syntax.ObjectTypeProperty,
                key: key,
                value: value,
                optional: optional,
                static: isStatic
            };
        },

        createUnionTypeAnnotation: function (types) {
            return {
                type: Syntax.UnionTypeAnnotation,
                types: types
            };
        },

        createIntersectionTypeAnnotation: function (types) {
            return {
                type: Syntax.IntersectionTypeAnnotation,
                types: types
            };
        },

        createTypeAlias: function (id, typeParameters, right) {
            return {
                type: Syntax.TypeAlias,
                id: id,
                typeParameters: typeParameters,
                right: right
            };
        },

        createInterface: function (id, typeParameters, body, extended) {
            return {
                type: Syntax.InterfaceDeclaration,
                id: id,
                typeParameters: typeParameters,
                body: body,
                extends: extended
            };
        },

        createInterfaceExtends: function (id, typeParameters) {
            return {
                type: Syntax.InterfaceExtends,
                id: id,
                typeParameters: typeParameters
            };
        },

        createDeclareFunction: function (id) {
            return {
                type: Syntax.DeclareFunction,
                id: id
            };
        },

        createDeclareVariable: function (id) {
            return {
                type: Syntax.DeclareVariable,
                id: id
            };
        },

        createDeclareModule: function (id, body) {
            return {
                type: Syntax.DeclareModule,
                id: id,
                body: body
            };
        },

        createJSXAttribute: function (name, value) {
            return {
                type: Syntax.JSXAttribute,
                name: name,
                value: value || null
            };
        },

        createJSXSpreadAttribute: function (argument) {
            return {
                type: Syntax.JSXSpreadAttribute,
                argument: argument
            };
        },

        createJSXIdentifier: function (name) {
            return {
                type: Syntax.JSXIdentifier,
                name: name
            };
        },

        createJSXNamespacedName: function (namespace, name) {
            return {
                type: Syntax.JSXNamespacedName,
                namespace: namespace,
                name: name
            };
        },

        createJSXMemberExpression: function (object, property) {
            return {
                type: Syntax.JSXMemberExpression,
                object: object,
                property: property
            };
        },

        createJSXElement: function (openingElement, closingElement, children) {
            return {
                type: Syntax.JSXElement,
                openingElement: openingElement,
                closingElement: closingElement,
                children: children
            };
        },

        createJSXEmptyExpression: function () {
            return {
                type: Syntax.JSXEmptyExpression
            };
        },

        createJSXExpressionContainer: function (expression) {
            return {
                type: Syntax.JSXExpressionContainer,
                expression: expression
            };
        },

        createJSXOpeningElement: function (name, attributes, selfClosing) {
            return {
                type: Syntax.JSXOpeningElement,
                name: name,
                selfClosing: selfClosing,
                attributes: attributes
            };
        },

        createJSXClosingElement: function (name) {
            return {
                type: Syntax.JSXClosingElement,
                name: name
            };
        },

        createIfStatement: function (test, consequent, alternate) {
            return {
                type: Syntax.IfStatement,
                test: test,
                consequent: consequent,
                alternate: alternate
            };
        },

        createLabeledStatement: function (label, body) {
            return {
                type: Syntax.LabeledStatement,
                label: label,
                body: body
            };
        },

        createLiteral: function (token) {
            var object = {
                type: Syntax.Literal,
                value: token.value,
                raw: source.slice(token.range[0], token.range[1])
            };
            if (token.regex) {
                object.regex = token.regex;
            }
            return object;
        },

        createMemberExpression: function (accessor, object, property) {
            return {
                type: Syntax.MemberExpression,
                computed: accessor === '[',
                object: object,
                property: property
            };
        },

        createNewExpression: function (callee, args) {
            return {
                type: Syntax.NewExpression,
                callee: callee,
                'arguments': args
            };
        },

        createObjectExpression: function (properties) {
            return {
                type: Syntax.ObjectExpression,
                properties: properties
            };
        },

        createPostfixExpression: function (operator, argument) {
            return {
                type: Syntax.UpdateExpression,
                operator: operator,
                argument: argument,
                prefix: false
            };
        },

        createProgram: function (body) {
            return {
                type: Syntax.Program,
                body: body
            };
        },

        createProperty: function (kind, key, value, method, shorthand, computed) {
            return {
                type: Syntax.Property,
                key: key,
                value: value,
                kind: kind,
                method: method,
                shorthand: shorthand,
                computed: computed
            };
        },

        createReturnStatement: function (argument) {
            return {
                type: Syntax.ReturnStatement,
                argument: argument
            };
        },

        createSequenceExpression: function (expressions) {
            return {
                type: Syntax.SequenceExpression,
                expressions: expressions
            };
        },

        createSwitchCase: function (test, consequent) {
            return {
                type: Syntax.SwitchCase,
                test: test,
                consequent: consequent
            };
        },

        createSwitchStatement: function (discriminant, cases) {
            return {
                type: Syntax.SwitchStatement,
                discriminant: discriminant,
                cases: cases
            };
        },

        createThisExpression: function () {
            return {
                type: Syntax.ThisExpression
            };
        },

        createThrowStatement: function (argument) {
            return {
                type: Syntax.ThrowStatement,
                argument: argument
            };
        },

        createTryStatement: function (block, guardedHandlers, handlers, finalizer) {
            return {
                type: Syntax.TryStatement,
                block: block,
                guardedHandlers: guardedHandlers,
                handlers: handlers,
                finalizer: finalizer
            };
        },

        createUnaryExpression: function (operator, argument) {
            if (operator === '++' || operator === '--') {
                return {
                    type: Syntax.UpdateExpression,
                    operator: operator,
                    argument: argument,
                    prefix: true
                };
            }
            return {
                type: Syntax.UnaryExpression,
                operator: operator,
                argument: argument,
                prefix: true
            };
        },

        createVariableDeclaration: function (declarations, kind) {
            return {
                type: Syntax.VariableDeclaration,
                declarations: declarations,
                kind: kind
            };
        },

        createVariableDeclarator: function (id, init) {
            return {
                type: Syntax.VariableDeclarator,
                id: id,
                init: init
            };
        },

        createWhileStatement: function (test, body) {
            return {
                type: Syntax.WhileStatement,
                test: test,
                body: body
            };
        },

        createWithStatement: function (object, body) {
            return {
                type: Syntax.WithStatement,
                object: object,
                body: body
            };
        },

        createTemplateElement: function (value, tail) {
            return {
                type: Syntax.TemplateElement,
                value: value,
                tail: tail
            };
        },

        createTemplateLiteral: function (quasis, expressions) {
            return {
                type: Syntax.TemplateLiteral,
                quasis: quasis,
                expressions: expressions
            };
        },

        createSpreadElement: function (argument) {
            return {
                type: Syntax.SpreadElement,
                argument: argument
            };
        },

        createSpreadProperty: function (argument) {
            return {
                type: Syntax.SpreadProperty,
                argument: argument
            };
        },

        createTaggedTemplateExpression: function (tag, quasi) {
            return {
                type: Syntax.TaggedTemplateExpression,
                tag: tag,
                quasi: quasi
            };
        },

        createArrowFunctionExpression: function (params, defaults, body, rest, expression, isAsync) {
            var arrowExpr = {
                type: Syntax.ArrowFunctionExpression,
                id: null,
                params: params,
                defaults: defaults,
                body: body,
                rest: rest,
                generator: false,
                expression: expression
            };

            if (isAsync) {
                arrowExpr.async = true;
            }

            return arrowExpr;
        },

        createMethodDefinition: function (propertyType, kind, key, value, computed) {
            return {
                type: Syntax.MethodDefinition,
                key: key,
                value: value,
                kind: kind,
                'static': propertyType === ClassPropertyType.static,
                computed: computed
            };
        },

        createClassProperty: function (key, typeAnnotation, computed, isStatic) {
            return {
                type: Syntax.ClassProperty,
                key: key,
                typeAnnotation: typeAnnotation,
                computed: computed,
                static: isStatic
            };
        },

        createClassBody: function (body) {
            return {
                type: Syntax.ClassBody,
                body: body
            };
        },

        createClassImplements: function (id, typeParameters) {
            return {
                type: Syntax.ClassImplements,
                id: id,
                typeParameters: typeParameters
            };
        },

        createClassExpression: function (id, superClass, body, typeParameters, superTypeParameters, implemented) {
            return {
                type: Syntax.ClassExpression,
                id: id,
                superClass: superClass,
                body: body,
                typeParameters: typeParameters,
                superTypeParameters: superTypeParameters,
                implements: implemented
            };
        },

        createClassDeclaration: function (id, superClass, body, typeParameters, superTypeParameters, implemented) {
            return {
                type: Syntax.ClassDeclaration,
                id: id,
                superClass: superClass,
                body: body,
                typeParameters: typeParameters,
                superTypeParameters: superTypeParameters,
                implements: implemented
            };
        },

        createExportSpecifier: function (id, name) {
            return {
                type: Syntax.ExportSpecifier,
                id: id,
                name: name
            };
        },

        createExportBatchSpecifier: function () {
            return {
                type: Syntax.ExportBatchSpecifier
            };
        },

        createImportDefaultSpecifier: function (id) {
            return {
                type: Syntax.ImportDefaultSpecifier,
                id: id
            };
        },

        createImportNamespaceSpecifier: function (id) {
            return {
                type: Syntax.ImportNamespaceSpecifier,
                id: id
            };
        },

        createExportDeclaration: function (isDefault, declaration, specifiers, src) {
            return {
                type: Syntax.ExportDeclaration,
                'default': !!isDefault,
                declaration: declaration,
                specifiers: specifiers,
                source: src
            };
        },

        createImportSpecifier: function (id, name) {
            return {
                type: Syntax.ImportSpecifier,
                id: id,
                name: name
            };
        },

        createImportDeclaration: function (specifiers, src, isType) {
            return {
                type: Syntax.ImportDeclaration,
                specifiers: specifiers,
                source: src,
                isType: isType
            };
        },

        createYieldExpression: function (argument, dlg) {
            return {
                type: Syntax.YieldExpression,
                argument: argument,
                delegate: dlg
            };
        },

        createAwaitExpression: function (argument) {
            return {
                type: Syntax.AwaitExpression,
                argument: argument
            };
        },

        createComprehensionExpression: function (filter, blocks, body) {
            return {
                type: Syntax.ComprehensionExpression,
                filter: filter,
                blocks: blocks,
                body: body
            };
        }

    };

    // Return true if there is a line terminator before the next token.

    function peekLineTerminator() {
        var pos, line, start, found;

        pos = index;
        line = lineNumber;
        start = lineStart;
        skipComment();
        found = lineNumber !== line;
        index = pos;
        lineNumber = line;
        lineStart = start;

        return found;
    }

    // Throw an exception

    function throwError(token, messageFormat) {
        var error,
            args = Array.prototype.slice.call(arguments, 2),
            msg = messageFormat.replace(
                /%(\d)/g,
                function (whole, idx) {
                    assert(idx < args.length, 'Message reference must be in range');
                    return args[idx];
                }
            );

        if (typeof token.lineNumber === 'number') {
            error = new Error('Line ' + token.lineNumber + ': ' + msg);
            error.index = token.range[0];
            error.lineNumber = token.lineNumber;
            error.column = token.range[0] - lineStart + 1;
        } else {
            error = new Error('Line ' + lineNumber + ': ' + msg);
            error.index = index;
            error.lineNumber = lineNumber;
            error.column = index - lineStart + 1;
        }

        error.description = msg;
        throw error;
    }

    function throwErrorTolerant() {
        try {
            throwError.apply(null, arguments);
        } catch (e) {
            if (extra.errors) {
                extra.errors.push(e);
            } else {
                throw e;
            }
        }
    }


    // Throw an exception because of the token.

    function throwUnexpected(token) {
        if (token.type === Token.EOF) {
            throwError(token, Messages.UnexpectedEOS);
        }

        if (token.type === Token.NumericLiteral) {
            throwError(token, Messages.UnexpectedNumber);
        }

        if (token.type === Token.StringLiteral || token.type === Token.JSXText) {
            throwError(token, Messages.UnexpectedString);
        }

        if (token.type === Token.Identifier) {
            throwError(token, Messages.UnexpectedIdentifier);
        }

        if (token.type === Token.Keyword) {
            if (isFutureReservedWord(token.value)) {
                throwError(token, Messages.UnexpectedReserved);
            } else if (strict && isStrictModeReservedWord(token.value)) {
                throwErrorTolerant(token, Messages.StrictReservedWord);
                return;
            }
            throwError(token, Messages.UnexpectedToken, token.value);
        }

        if (token.type === Token.Template) {
            throwError(token, Messages.UnexpectedTemplate, token.value.raw);
        }

        // BooleanLiteral, NullLiteral, or Punctuator.
        throwError(token, Messages.UnexpectedToken, token.value);
    }

    // Expect the next token to match the specified punctuator.
    // If not, an exception will be thrown.

    function expect(value) {
        var token = lex();
        if (token.type !== Token.Punctuator || token.value !== value) {
            throwUnexpected(token);
        }
    }

    // Expect the next token to match the specified keyword.
    // If not, an exception will be thrown.

    function expectKeyword(keyword, contextual) {
        var token = lex();
        if (token.type !== (contextual ? Token.Identifier : Token.Keyword) ||
                token.value !== keyword) {
            throwUnexpected(token);
        }
    }

    // Expect the next token to match the specified contextual keyword.
    // If not, an exception will be thrown.

    function expectContextualKeyword(keyword) {
        return expectKeyword(keyword, true);
    }

    // Return true if the next token matches the specified punctuator.

    function match(value) {
        return lookahead.type === Token.Punctuator && lookahead.value === value;
    }

    // Return true if the next token matches the specified keyword

    function matchKeyword(keyword, contextual) {
        var expectedType = contextual ? Token.Identifier : Token.Keyword;
        return lookahead.type === expectedType && lookahead.value === keyword;
    }

    // Return true if the next token matches the specified contextual keyword

    function matchContextualKeyword(keyword) {
        return matchKeyword(keyword, true);
    }

    // Return true if the next token is an assignment operator

    function matchAssign() {
        var op;

        if (lookahead.type !== Token.Punctuator) {
            return false;
        }
        op = lookahead.value;
        return op === '=' ||
            op === '*=' ||
            op === '/=' ||
            op === '%=' ||
            op === '+=' ||
            op === '-=' ||
            op === '<<=' ||
            op === '>>=' ||
            op === '>>>=' ||
            op === '&=' ||
            op === '^=' ||
            op === '|=';
    }

    // Note that 'yield' is treated as a keyword in strict mode, but a
    // contextual keyword (identifier) in non-strict mode, so we need to
    // use matchKeyword('yield', false) and matchKeyword('yield', true)
    // (i.e. matchContextualKeyword) appropriately.
    function matchYield() {
        return state.yieldAllowed && matchKeyword('yield', !strict);
    }

    function matchAsync() {
        var backtrackToken = lookahead, matches = false;

        if (matchContextualKeyword('async')) {
            lex(); // Make sure peekLineTerminator() starts after 'async'.
            matches = !peekLineTerminator();
            rewind(backtrackToken); // Revert the lex().
        }

        return matches;
    }

    function matchAwait() {
        return state.awaitAllowed && matchContextualKeyword('await');
    }

    function consumeSemicolon() {
        var line, oldIndex = index, oldLineNumber = lineNumber,
            oldLineStart = lineStart, oldLookahead = lookahead;

        // Catch the very common case first: immediately a semicolon (char #59).
        if (source.charCodeAt(index) === 59) {
            lex();
            return;
        }

        line = lineNumber;
        skipComment();
        if (lineNumber !== line) {
            index = oldIndex;
            lineNumber = oldLineNumber;
            lineStart = oldLineStart;
            lookahead = oldLookahead;
            return;
        }

        if (match(';')) {
            lex();
            return;
        }

        if (lookahead.type !== Token.EOF && !match('}')) {
            throwUnexpected(lookahead);
        }
    }

    // Return true if provided expression is LeftHandSideExpression

    function isLeftHandSide(expr) {
        return expr.type === Syntax.Identifier || expr.type === Syntax.MemberExpression;
    }

    function isAssignableLeftHandSide(expr) {
        return isLeftHandSide(expr) || expr.type === Syntax.ObjectPattern || expr.type === Syntax.ArrayPattern;
    }

    // 11.1.4 Array Initialiser

    function parseArrayInitialiser() {
        var elements = [], blocks = [], filter = null, tmp, possiblecomprehension = true,
            marker = markerCreate();

        expect('[');
        while (!match(']')) {
            if (lookahead.value === 'for' &&
                    lookahead.type === Token.Keyword) {
                if (!possiblecomprehension) {
                    throwError({}, Messages.ComprehensionError);
                }
                matchKeyword('for');
                tmp = parseForStatement({ignoreBody: true});
                tmp.of = tmp.type === Syntax.ForOfStatement;
                tmp.type = Syntax.ComprehensionBlock;
                if (tmp.left.kind) { // can't be let or const
                    throwError({}, Messages.ComprehensionError);
                }
                blocks.push(tmp);
            } else if (lookahead.value === 'if' &&
                           lookahead.type === Token.Keyword) {
                if (!possiblecomprehension) {
                    throwError({}, Messages.ComprehensionError);
                }
                expectKeyword('if');
                expect('(');
                filter = parseExpression();
                expect(')');
            } else if (lookahead.value === ',' &&
                           lookahead.type === Token.Punctuator) {
                possiblecomprehension = false; // no longer allowed.
                lex();
                elements.push(null);
            } else {
                tmp = parseSpreadOrAssignmentExpression();
                elements.push(tmp);
                if (tmp && tmp.type === Syntax.SpreadElement) {
                    if (!match(']')) {
                        throwError({}, Messages.ElementAfterSpreadElement);
                    }
                } else if (!(match(']') || matchKeyword('for') || matchKeyword('if'))) {
                    expect(','); // this lexes.
                    possiblecomprehension = false;
                }
            }
        }

        expect(']');

        if (filter && !blocks.length) {
            throwError({}, Messages.ComprehensionRequiresBlock);
        }

        if (blocks.length) {
            if (elements.length !== 1) {
                throwError({}, Messages.ComprehensionError);
            }
            return markerApply(marker, delegate.createComprehensionExpression(filter, blocks, elements[0]));
        }
        return markerApply(marker, delegate.createArrayExpression(elements));
    }

    // 11.1.5 Object Initialiser

    function parsePropertyFunction(options) {
        var previousStrict, previousYieldAllowed, previousAwaitAllowed,
            params, defaults, body, marker = markerCreate();

        previousStrict = strict;
        previousYieldAllowed = state.yieldAllowed;
        state.yieldAllowed = options.generator;
        previousAwaitAllowed = state.awaitAllowed;
        state.awaitAllowed = options.async;
        params = options.params || [];
        defaults = options.defaults || [];

        body = parseConciseBody();
        if (options.name && strict && isRestrictedWord(params[0].name)) {
            throwErrorTolerant(options.name, Messages.StrictParamName);
        }
        strict = previousStrict;
        state.yieldAllowed = previousYieldAllowed;
        state.awaitAllowed = previousAwaitAllowed;

        return markerApply(marker, delegate.createFunctionExpression(
            null,
            params,
            defaults,
            body,
            options.rest || null,
            options.generator,
            body.type !== Syntax.BlockStatement,
            options.async,
            options.returnType,
            options.typeParameters
        ));
    }


    function parsePropertyMethodFunction(options) {
        var previousStrict, tmp, method;

        previousStrict = strict;
        strict = true;

        tmp = parseParams();

        if (tmp.stricted) {
            throwErrorTolerant(tmp.stricted, tmp.message);
        }

        method = parsePropertyFunction({
            params: tmp.params,
            defaults: tmp.defaults,
            rest: tmp.rest,
            generator: options.generator,
            async: options.async,
            returnType: tmp.returnType,
            typeParameters: options.typeParameters
        });

        strict = previousStrict;

        return method;
    }


    function parseObjectPropertyKey() {
        var marker = markerCreate(),
            token = lex(),
            propertyKey,
            result;

        // Note: This function is called only from parseObjectProperty(), where
        // EOF and Punctuator tokens are already filtered out.

        if (token.type === Token.StringLiteral || token.type === Token.NumericLiteral) {
            if (strict && token.octal) {
                throwErrorTolerant(token, Messages.StrictOctalLiteral);
            }
            return markerApply(marker, delegate.createLiteral(token));
        }

        if (token.type === Token.Punctuator && token.value === '[') {
            // For computed properties we should skip the [ and ], and
            // capture in marker only the assignment expression itself.
            marker = markerCreate();
            propertyKey = parseAssignmentExpression();
            result = markerApply(marker, propertyKey);
            expect(']');
            return result;
        }

        return markerApply(marker, delegate.createIdentifier(token.value));
    }

    function parseObjectProperty() {
        var token, key, id, param, computed,
            marker = markerCreate(), returnType, typeParameters;

        token = lookahead;
        computed = (token.value === '[' && token.type === Token.Punctuator);

        if (token.type === Token.Identifier || computed || matchAsync()) {
            id = parseObjectPropertyKey();

            if (match(':')) {
                lex();

                return markerApply(
                    marker,
                    delegate.createProperty(
                        'init',
                        id,
                        parseAssignmentExpression(),
                        false,
                        false,
                        computed
                    )
                );
            }

            if (match('(') || match('<')) {
                if (match('<')) {
                    typeParameters = parseTypeParameterDeclaration();
                }
                return markerApply(
                    marker,
                    delegate.createProperty(
                        'init',
                        id,
                        parsePropertyMethodFunction({
                            generator: false,
                            async: false,
                            typeParameters: typeParameters
                        }),
                        true,
                        false,
                        computed
                    )
                );
            }

            // Property Assignment: Getter and Setter.

            if (token.value === 'get') {
                computed = (lookahead.value === '[');
                key = parseObjectPropertyKey();

                expect('(');
                expect(')');
                if (match(':')) {
                    returnType = parseTypeAnnotation();
                }

                return markerApply(
                    marker,
                    delegate.createProperty(
                        'get',
                        key,
                        parsePropertyFunction({
                            generator: false,
                            async: false,
                            returnType: returnType
                        }),
                        false,
                        false,
                        computed
                    )
                );
            }

            if (token.value === 'set') {
                computed = (lookahead.value === '[');
                key = parseObjectPropertyKey();

                expect('(');
                token = lookahead;
                param = [ parseTypeAnnotatableIdentifier() ];
                expect(')');
                if (match(':')) {
                    returnType = parseTypeAnnotation();
                }

                return markerApply(
                    marker,
                    delegate.createProperty(
                        'set',
                        key,
                        parsePropertyFunction({
                            params: param,
                            generator: false,
                            async: false,
                            name: token,
                            returnType: returnType
                        }),
                        false,
                        false,
                        computed
                    )
                );
            }

            if (token.value === 'async') {
                computed = (lookahead.value === '[');
                key = parseObjectPropertyKey();

                if (match('<')) {
                    typeParameters = parseTypeParameterDeclaration();
                }

                return markerApply(
                    marker,
                    delegate.createProperty(
                        'init',
                        key,
                        parsePropertyMethodFunction({
                            generator: false,
                            async: true,
                            typeParameters: typeParameters
                        }),
                        true,
                        false,
                        computed
                    )
                );
            }

            if (computed) {
                // Computed properties can only be used with full notation.
                throwUnexpected(lookahead);
            }

            return markerApply(
                marker,
                delegate.createProperty('init', id, id, false, true, false)
            );
        }

        if (token.type === Token.EOF || token.type === Token.Punctuator) {
            if (!match('*')) {
                throwUnexpected(token);
            }
            lex();

            computed = (lookahead.type === Token.Punctuator && lookahead.value === '[');

            id = parseObjectPropertyKey();

            if (match('<')) {
                typeParameters = parseTypeParameterDeclaration();
            }

            if (!match('(')) {
                throwUnexpected(lex());
            }

            return markerApply(marker, delegate.createProperty(
                'init',
                id,
                parsePropertyMethodFunction({
                    generator: true,
                    typeParameters: typeParameters
                }),
                true,
                false,
                computed
            ));
        }
        key = parseObjectPropertyKey();
        if (match(':')) {
            lex();
            return markerApply(marker, delegate.createProperty('init', key, parseAssignmentExpression(), false, false, false));
        }
        if (match('(') || match('<')) {
            if (match('<')) {
                typeParameters = parseTypeParameterDeclaration();
            }
            return markerApply(marker, delegate.createProperty(
                'init',
                key,
                parsePropertyMethodFunction({
                    generator: false,
                    typeParameters: typeParameters
                }),
                true,
                false,
                false
            ));
        }
        throwUnexpected(lex());
    }

    function parseObjectSpreadProperty() {
        var marker = markerCreate();
        expect('...');
        return markerApply(marker, delegate.createSpreadProperty(parseAssignmentExpression()));
    }

    function getFieldName(key) {
        var toString = String;
        if (key.type === Syntax.Identifier) {
            return key.name;
        }
        return toString(key.value);
    }

    function parseObjectInitialiser() {
        var properties = [], property, name, kind, storedKind, map = new StringMap(),
            marker = markerCreate(), toString = String;

        expect('{');

        while (!match('}')) {
            if (match('...')) {
                property = parseObjectSpreadProperty();
            } else {
                property = parseObjectProperty();

                if (property.key.type === Syntax.Identifier) {
                    name = property.key.name;
                } else {
                    name = toString(property.key.value);
                }
                kind = (property.kind === 'init') ? PropertyKind.Data : (property.kind === 'get') ? PropertyKind.Get : PropertyKind.Set;

                if (map.has(name)) {
                    storedKind = map.get(name);
                    if (storedKind === PropertyKind.Data) {
                        if (strict && kind === PropertyKind.Data) {
                            throwErrorTolerant({}, Messages.StrictDuplicateProperty);
                        } else if (kind !== PropertyKind.Data) {
                            throwErrorTolerant({}, Messages.AccessorDataProperty);
                        }
                    } else {
                        if (kind === PropertyKind.Data) {
                            throwErrorTolerant({}, Messages.AccessorDataProperty);
                        } else if (storedKind & kind) {
                            throwErrorTolerant({}, Messages.AccessorGetSet);
                        }
                    }
                    map.set(name, storedKind | kind);
                } else {
                    map.set(name, kind);
                }
            }

            properties.push(property);

            if (!match('}')) {
                expect(',');
            }
        }

        expect('}');

        return markerApply(marker, delegate.createObjectExpression(properties));
    }

    function parseTemplateElement(option) {
        var marker, token;

        if (lookahead.type !== Token.Template || (option.head && !lookahead.head)) {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        marker = markerCreate();
        token = lex();

        if (strict && token.octal) {
            throwError(token, Messages.StrictOctalLiteral);
        }
        return markerApply(marker, delegate.createTemplateElement({ raw: token.value.raw, cooked: token.value.cooked }, token.tail));
    }

    function parseTemplateLiteral() {
        var quasi, quasis, expressions, marker = markerCreate();

        quasi = parseTemplateElement({ head: true });
        quasis = [ quasi ];
        expressions = [];

        while (!quasi.tail) {
            expressions.push(parseExpression());
            quasi = parseTemplateElement({ head: false });
            quasis.push(quasi);
        }

        return markerApply(marker, delegate.createTemplateLiteral(quasis, expressions));
    }

    // 11.1.6 The Grouping Operator

    function parseGroupExpression() {
        var expr, marker, typeAnnotation;

        expect('(');

        ++state.parenthesizedCount;

        marker = markerCreate();

        expr = parseExpression();

        if (match(':')) {
            typeAnnotation = parseTypeAnnotation();
            expr = markerApply(marker, delegate.createTypeCast(
                expr,
                typeAnnotation
            ));
        }

        expect(')');

        return expr;
    }

    function matchAsyncFuncExprOrDecl() {
        var token;

        if (matchAsync()) {
            token = lookahead2();
            if (token.type === Token.Keyword && token.value === 'function') {
                return true;
            }
        }

        return false;
    }

    // 11.1 Primary Expressions

    function parsePrimaryExpression() {
        var marker, type, token, expr;

        type = lookahead.type;

        if (type === Token.Identifier) {
            marker = markerCreate();
            return markerApply(marker, delegate.createIdentifier(lex().value));
        }

        if (type === Token.StringLiteral || type === Token.NumericLiteral) {
            if (strict && lookahead.octal) {
                throwErrorTolerant(lookahead, Messages.StrictOctalLiteral);
            }
            marker = markerCreate();
            return markerApply(marker, delegate.createLiteral(lex()));
        }

        if (type === Token.Keyword) {
            if (matchKeyword('this')) {
                marker = markerCreate();
                lex();
                return markerApply(marker, delegate.createThisExpression());
            }

            if (matchKeyword('function')) {
                return parseFunctionExpression();
            }

            if (matchKeyword('class')) {
                return parseClassExpression();
            }

            if (matchKeyword('super')) {
                marker = markerCreate();
                lex();
                return markerApply(marker, delegate.createIdentifier('super'));
            }
        }

        if (type === Token.BooleanLiteral) {
            marker = markerCreate();
            token = lex();
            token.value = (token.value === 'true');
            return markerApply(marker, delegate.createLiteral(token));
        }

        if (type === Token.NullLiteral) {
            marker = markerCreate();
            token = lex();
            token.value = null;
            return markerApply(marker, delegate.createLiteral(token));
        }

        if (match('[')) {
            return parseArrayInitialiser();
        }

        if (match('{')) {
            return parseObjectInitialiser();
        }

        if (match('(')) {
            return parseGroupExpression();
        }

        if (match('/') || match('/=')) {
            marker = markerCreate();
            expr = delegate.createLiteral(scanRegExp());
            peek();
            return markerApply(marker, expr);
        }

        if (type === Token.Template) {
            return parseTemplateLiteral();
        }

        if (match('<')) {
            return parseJSXElement();
        }

        throwUnexpected(lex());
    }

    // 11.2 Left-Hand-Side Expressions

    function parseArguments() {
        var args = [], arg;

        expect('(');

        if (!match(')')) {
            while (index < length) {
                arg = parseSpreadOrAssignmentExpression();
                args.push(arg);

                if (arg.type === Syntax.SpreadElement) {
                    if (match(')')) {
                        break;
                    } else {
                        throwError({}, Messages.ElementAfterSpreadElement);
                    }
                }

                if (match(')')) {
                    break;
                } else {
                    expect(',');
                    if (match(')')) {
                        break;
                    }
                }
            }
        }

        expect(')');

        return args;
    }

    function parseSpreadOrAssignmentExpression() {
        if (match('...')) {
            var marker = markerCreate();
            lex();
            return markerApply(marker, delegate.createSpreadElement(parseAssignmentExpression()));
        }
        return parseAssignmentExpression();
    }

    function parseNonComputedProperty() {
        var marker = markerCreate(),
            token = lex();

        if (!isIdentifierName(token)) {
            throwUnexpected(token);
        }

        return markerApply(marker, delegate.createIdentifier(token.value));
    }

    function parseNonComputedMember() {
        expect('.');

        return parseNonComputedProperty();
    }

    function parseComputedMember() {
        var expr;

        expect('[');

        expr = parseExpression();

        expect(']');

        return expr;
    }

    function parseNewExpression() {
        var callee, args, marker = markerCreate();

        expectKeyword('new');
        callee = parseLeftHandSideExpression();
        args = match('(') ? parseArguments() : [];

        return markerApply(marker, delegate.createNewExpression(callee, args));
    }

    function parseLeftHandSideExpressionAllowCall() {
        var expr, args, marker = markerCreate();

        expr = matchKeyword('new') ? parseNewExpression() : parsePrimaryExpression();

        while (match('.') || match('[') || match('(') || (lookahead.type === Token.Template && lookahead.head)) {
            if (match('(')) {
                args = parseArguments();
                expr = markerApply(marker, delegate.createCallExpression(expr, args));
            } else if (match('[')) {
                expr = markerApply(marker, delegate.createMemberExpression('[', expr, parseComputedMember()));
            } else if (match('.')) {
                expr = markerApply(marker, delegate.createMemberExpression('.', expr, parseNonComputedMember()));
            } else {
                expr = markerApply(marker, delegate.createTaggedTemplateExpression(expr, parseTemplateLiteral()));
            }
        }

        return expr;
    }

    function parseLeftHandSideExpression() {
        var expr, marker = markerCreate();

        expr = matchKeyword('new') ? parseNewExpression() : parsePrimaryExpression();

        while (match('.') || match('[') || (lookahead.type === Token.Template && lookahead.head)) {
            if (match('[')) {
                expr = markerApply(marker, delegate.createMemberExpression('[', expr, parseComputedMember()));
            } else if (match('.')) {
                expr = markerApply(marker, delegate.createMemberExpression('.', expr, parseNonComputedMember()));
            } else {
                expr = markerApply(marker, delegate.createTaggedTemplateExpression(expr, parseTemplateLiteral()));
            }
        }

        return expr;
    }

    // 11.3 Postfix Expressions

    function parsePostfixExpression() {
        var marker = markerCreate(),
            expr = parseLeftHandSideExpressionAllowCall(),
            token;

        if (lookahead.type !== Token.Punctuator) {
            return expr;
        }

        if ((match('++') || match('--')) && !peekLineTerminator()) {
            // 11.3.1, 11.3.2
            if (strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)) {
                throwErrorTolerant({}, Messages.StrictLHSPostfix);
            }

            if (!isLeftHandSide(expr)) {
                throwError({}, Messages.InvalidLHSInAssignment);
            }

            token = lex();
            expr = markerApply(marker, delegate.createPostfixExpression(token.value, expr));
        }

        return expr;
    }

    // 11.4 Unary Operators

    function parseUnaryExpression() {
        var marker, token, expr;

        if (lookahead.type !== Token.Punctuator && lookahead.type !== Token.Keyword) {
            return parsePostfixExpression();
        }

        if (match('++') || match('--')) {
            marker = markerCreate();
            token = lex();
            expr = parseUnaryExpression();
            // 11.4.4, 11.4.5
            if (strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)) {
                throwErrorTolerant({}, Messages.StrictLHSPrefix);
            }

            if (!isLeftHandSide(expr)) {
                throwError({}, Messages.InvalidLHSInAssignment);
            }

            return markerApply(marker, delegate.createUnaryExpression(token.value, expr));
        }

        if (match('+') || match('-') || match('~') || match('!')) {
            marker = markerCreate();
            token = lex();
            expr = parseUnaryExpression();
            return markerApply(marker, delegate.createUnaryExpression(token.value, expr));
        }

        if (matchKeyword('delete') || matchKeyword('void') || matchKeyword('typeof')) {
            marker = markerCreate();
            token = lex();
            expr = parseUnaryExpression();
            expr = markerApply(marker, delegate.createUnaryExpression(token.value, expr));
            if (strict && expr.operator === 'delete' && expr.argument.type === Syntax.Identifier) {
                throwErrorTolerant({}, Messages.StrictDelete);
            }
            return expr;
        }

        return parsePostfixExpression();
    }

    function binaryPrecedence(token, allowIn) {
        var prec = 0;

        if (token.type !== Token.Punctuator && token.type !== Token.Keyword) {
            return 0;
        }

        switch (token.value) {
        case '||':
            prec = 1;
            break;

        case '&&':
            prec = 2;
            break;

        case '|':
            prec = 3;
            break;

        case '^':
            prec = 4;
            break;

        case '&':
            prec = 5;
            break;

        case '==':
        case '!=':
        case '===':
        case '!==':
            prec = 6;
            break;

        case '<':
        case '>':
        case '<=':
        case '>=':
        case 'instanceof':
            prec = 7;
            break;

        case 'in':
            prec = allowIn ? 7 : 0;
            break;

        case '<<':
        case '>>':
        case '>>>':
            prec = 8;
            break;

        case '+':
        case '-':
            prec = 9;
            break;

        case '*':
        case '/':
        case '%':
            prec = 11;
            break;

        default:
            break;
        }

        return prec;
    }

    // 11.5 Multiplicative Operators
    // 11.6 Additive Operators
    // 11.7 Bitwise Shift Operators
    // 11.8 Relational Operators
    // 11.9 Equality Operators
    // 11.10 Binary Bitwise Operators
    // 11.11 Binary Logical Operators

    function parseBinaryExpression() {
        var expr, token, prec, previousAllowIn, stack, right, operator, left, i,
            marker, markers;

        previousAllowIn = state.allowIn;
        state.allowIn = true;

        marker = markerCreate();
        left = parseUnaryExpression();

        token = lookahead;
        prec = binaryPrecedence(token, previousAllowIn);
        if (prec === 0) {
            return left;
        }
        token.prec = prec;
        lex();

        markers = [marker, markerCreate()];
        right = parseUnaryExpression();

        stack = [left, token, right];

        while ((prec = binaryPrecedence(lookahead, previousAllowIn)) > 0) {

            // Reduce: make a binary expression from the three topmost entries.
            while ((stack.length > 2) && (prec <= stack[stack.length - 2].prec)) {
                right = stack.pop();
                operator = stack.pop().value;
                left = stack.pop();
                expr = delegate.createBinaryExpression(operator, left, right);
                markers.pop();
                marker = markers.pop();
                markerApply(marker, expr);
                stack.push(expr);
                markers.push(marker);
            }

            // Shift.
            token = lex();
            token.prec = prec;
            stack.push(token);
            markers.push(markerCreate());
            expr = parseUnaryExpression();
            stack.push(expr);
        }

        state.allowIn = previousAllowIn;

        // Final reduce to clean-up the stack.
        i = stack.length - 1;
        expr = stack[i];
        markers.pop();
        while (i > 1) {
            expr = delegate.createBinaryExpression(stack[i - 1].value, stack[i - 2], expr);
            i -= 2;
            marker = markers.pop();
            markerApply(marker, expr);
        }

        return expr;
    }


    // 11.12 Conditional Operator

    function parseConditionalExpression() {
        var expr, previousAllowIn, consequent, alternate, marker = markerCreate();
        expr = parseBinaryExpression();

        if (match('?')) {
            lex();
            previousAllowIn = state.allowIn;
            state.allowIn = true;
            consequent = parseAssignmentExpression();
            state.allowIn = previousAllowIn;
            expect(':');
            alternate = parseAssignmentExpression();

            expr = markerApply(marker, delegate.createConditionalExpression(expr, consequent, alternate));
        }

        return expr;
    }

    // 11.13 Assignment Operators

    // 12.14.5 AssignmentPattern

    function reinterpretAsAssignmentBindingPattern(expr) {
        var i, len, property, element;

        if (expr.type === Syntax.ObjectExpression) {
            expr.type = Syntax.ObjectPattern;
            for (i = 0, len = expr.properties.length; i < len; i += 1) {
                property = expr.properties[i];
                if (property.type === Syntax.SpreadProperty) {
                    if (i < len - 1) {
                        throwError({}, Messages.PropertyAfterSpreadProperty);
                    }
                    reinterpretAsAssignmentBindingPattern(property.argument);
                } else {
                    if (property.kind !== 'init') {
                        throwError({}, Messages.InvalidLHSInAssignment);
                    }
                    reinterpretAsAssignmentBindingPattern(property.value);
                }
            }
        } else if (expr.type === Syntax.ArrayExpression) {
            expr.type = Syntax.ArrayPattern;
            for (i = 0, len = expr.elements.length; i < len; i += 1) {
                element = expr.elements[i];
                /* istanbul ignore else */
                if (element) {
                    reinterpretAsAssignmentBindingPattern(element);
                }
            }
        } else if (expr.type === Syntax.Identifier) {
            if (isRestrictedWord(expr.name)) {
                throwError({}, Messages.InvalidLHSInAssignment);
            }
        } else if (expr.type === Syntax.SpreadElement) {
            reinterpretAsAssignmentBindingPattern(expr.argument);
            if (expr.argument.type === Syntax.ObjectPattern) {
                throwError({}, Messages.ObjectPatternAsSpread);
            }
        } else {
            /* istanbul ignore else */
            if (expr.type !== Syntax.MemberExpression && expr.type !== Syntax.CallExpression && expr.type !== Syntax.NewExpression) {
                throwError({}, Messages.InvalidLHSInAssignment);
            }
        }
    }

    // 13.2.3 BindingPattern

    function reinterpretAsDestructuredParameter(options, expr) {
        var i, len, property, element;

        if (expr.type === Syntax.ObjectExpression) {
            expr.type = Syntax.ObjectPattern;
            for (i = 0, len = expr.properties.length; i < len; i += 1) {
                property = expr.properties[i];
                if (property.type === Syntax.SpreadProperty) {
                    if (i < len - 1) {
                        throwError({}, Messages.PropertyAfterSpreadProperty);
                    }
                    reinterpretAsDestructuredParameter(options, property.argument);
                } else {
                    if (property.kind !== 'init') {
                        throwError({}, Messages.InvalidLHSInFormalsList);
                    }
                    reinterpretAsDestructuredParameter(options, property.value);
                }
            }
        } else if (expr.type === Syntax.ArrayExpression) {
            expr.type = Syntax.ArrayPattern;
            for (i = 0, len = expr.elements.length; i < len; i += 1) {
                element = expr.elements[i];
                if (element) {
                    reinterpretAsDestructuredParameter(options, element);
                }
            }
        } else if (expr.type === Syntax.Identifier) {
            validateParam(options, expr, expr.name);
        } else if (expr.type === Syntax.SpreadElement) {
            // BindingRestElement only allows BindingIdentifier
            if (expr.argument.type !== Syntax.Identifier) {
                throwError({}, Messages.InvalidLHSInFormalsList);
            }
            validateParam(options, expr.argument, expr.argument.name);
        } else {
            throwError({}, Messages.InvalidLHSInFormalsList);
        }
    }

    function reinterpretAsCoverFormalsList(expressions) {
        var i, len, param, params, defaults, defaultCount, options, rest;

        params = [];
        defaults = [];
        defaultCount = 0;
        rest = null;
        options = {
            paramSet: new StringMap()
        };

        for (i = 0, len = expressions.length; i < len; i += 1) {
            param = expressions[i];
            if (param.type === Syntax.Identifier) {
                params.push(param);
                defaults.push(null);
                validateParam(options, param, param.name);
            } else if (param.type === Syntax.ObjectExpression || param.type === Syntax.ArrayExpression) {
                reinterpretAsDestructuredParameter(options, param);
                params.push(param);
                defaults.push(null);
            } else if (param.type === Syntax.SpreadElement) {
                assert(i === len - 1, 'It is guaranteed that SpreadElement is last element by parseExpression');
                if (param.argument.type !== Syntax.Identifier) {
                    throwError({}, Messages.InvalidLHSInFormalsList);
                }
                reinterpretAsDestructuredParameter(options, param.argument);
                rest = param.argument;
            } else if (param.type === Syntax.AssignmentExpression) {
                params.push(param.left);
                defaults.push(param.right);
                ++defaultCount;
                validateParam(options, param.left, param.left.name);
            } else {
                return null;
            }
        }

        if (options.message === Messages.StrictParamDupe) {
            throwError(
                strict ? options.stricted : options.firstRestricted,
                options.message
            );
        }

        if (defaultCount === 0) {
            defaults = [];
        }

        return {
            params: params,
            defaults: defaults,
            rest: rest,
            stricted: options.stricted,
            firstRestricted: options.firstRestricted,
            message: options.message
        };
    }

    function parseArrowFunctionExpression(options, marker) {
        var previousStrict, previousYieldAllowed, previousAwaitAllowed, body;

        expect('=>');

        previousStrict = strict;
        previousYieldAllowed = state.yieldAllowed;
        state.yieldAllowed = false;
        previousAwaitAllowed = state.awaitAllowed;
        state.awaitAllowed = !!options.async;
        body = parseConciseBody();

        if (strict && options.firstRestricted) {
            throwError(options.firstRestricted, options.message);
        }
        if (strict && options.stricted) {
            throwErrorTolerant(options.stricted, options.message);
        }

        strict = previousStrict;
        state.yieldAllowed = previousYieldAllowed;
        state.awaitAllowed = previousAwaitAllowed;

        return markerApply(marker, delegate.createArrowFunctionExpression(
            options.params,
            options.defaults,
            body,
            options.rest,
            body.type !== Syntax.BlockStatement,
            !!options.async
        ));
    }

    function parseAssignmentExpression() {
        var marker, expr, token, params, oldParenthesizedCount,
            startsWithParen = false, backtrackToken = lookahead,
            possiblyAsync = false;

        if (matchYield()) {
            return parseYieldExpression();
        }

        if (matchAwait()) {
            return parseAwaitExpression();
        }

        oldParenthesizedCount = state.parenthesizedCount;

        marker = markerCreate();

        if (matchAsyncFuncExprOrDecl()) {
            return parseFunctionExpression();
        }

        if (matchAsync()) {
            // We can't be completely sure that this 'async' token is
            // actually a contextual keyword modifying a function
            // expression, so we might have to un-lex() it later by
            // calling rewind(backtrackToken).
            possiblyAsync = true;
            lex();
        }

        if (match('(')) {
            token = lookahead2();
            if ((token.type === Token.Punctuator && token.value === ')') || token.value === '...') {
                params = parseParams();
                if (!match('=>')) {
                    throwUnexpected(lex());
                }
                params.async = possiblyAsync;
                return parseArrowFunctionExpression(params, marker);
            }
            startsWithParen = true;
        }

        token = lookahead;

        // If the 'async' keyword is not followed by a '(' character or an
        // identifier, then it can't be an arrow function modifier, and we
        // should interpret it as a normal identifer.
        if (possiblyAsync && !match('(') && token.type !== Token.Identifier) {
            possiblyAsync = false;
            rewind(backtrackToken);
        }

        expr = parseConditionalExpression();

        if (match('=>') &&
                (state.parenthesizedCount === oldParenthesizedCount ||
                state.parenthesizedCount === (oldParenthesizedCount + 1))) {
            if (expr.type === Syntax.Identifier) {
                params = reinterpretAsCoverFormalsList([ expr ]);
            } else if (expr.type === Syntax.AssignmentExpression ||
                    expr.type === Syntax.ArrayExpression ||
                    expr.type === Syntax.ObjectExpression) {
                if (!startsWithParen) {
                    throwUnexpected(lex());
                }
                params = reinterpretAsCoverFormalsList([ expr ]);
            } else if (expr.type === Syntax.SequenceExpression) {
                params = reinterpretAsCoverFormalsList(expr.expressions);
            }
            if (params) {
                params.async = possiblyAsync;
                return parseArrowFunctionExpression(params, marker);
            }
        }

        // If we haven't returned by now, then the 'async' keyword was not
        // a function modifier, and we should rewind and interpret it as a
        // normal identifier.
        if (possiblyAsync) {
            possiblyAsync = false;
            rewind(backtrackToken);
            expr = parseConditionalExpression();
        }

        if (matchAssign()) {
            // 11.13.1
            if (strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)) {
                throwErrorTolerant(token, Messages.StrictLHSAssignment);
            }

            // ES.next draf 11.13 Runtime Semantics step 1
            if (match('=') && (expr.type === Syntax.ObjectExpression || expr.type === Syntax.ArrayExpression)) {
                reinterpretAsAssignmentBindingPattern(expr);
            } else if (!isLeftHandSide(expr)) {
                throwError({}, Messages.InvalidLHSInAssignment);
            }

            expr = markerApply(marker, delegate.createAssignmentExpression(lex().value, expr, parseAssignmentExpression()));
        }

        return expr;
    }

    // 11.14 Comma Operator

    function parseExpression() {
        var marker, expr, expressions, sequence, spreadFound, possibleArrow;

        marker = markerCreate();
        expr = parseAssignmentExpression();
        expressions = [ expr ];

        if (match(',')) {
            while (index < length) {
                if (!match(',')) {
                    break;
                }

                lex();

                if (match(')')) {
                    possibleArrow = lookahead2();
                    if (
                        possibleArrow.type === Token.Punctuator &&
                        possibleArrow.value === '=>'
                    ) {
                        break;
                    }
                }

                expr = parseSpreadOrAssignmentExpression();
                expressions.push(expr);

                if (expr.type === Syntax.SpreadElement) {
                    spreadFound = true;
                    if (!match(')')) {
                        throwError({}, Messages.ElementAfterSpreadElement);
                    }
                    break;
                }
            }

            if (expressions.length > 1) {
                sequence = markerApply(marker, delegate.createSequenceExpression(expressions));
            }
        }

        if (spreadFound && lookahead2().value !== '=>') {
            throwError({}, Messages.IllegalSpread);
        }

        return sequence || expr;
    }

    // 12.1 Block

    function parseStatementList() {
        var list = [],
            statement;

        while (index < length) {
            if (match('}')) {
                break;
            }
            statement = parseSourceElement();
            if (typeof statement === 'undefined') {
                break;
            }
            list.push(statement);
        }

        return list;
    }

    function parseBlock() {
        var block, marker = markerCreate();

        expect('{');

        block = parseStatementList();

        expect('}');

        return markerApply(marker, delegate.createBlockStatement(block));
    }

    // 12.2 Variable Statement

    function parseTypeParameterDeclaration() {
        var marker = markerCreate(), paramTypes = [];

        expect('<');
        while (!match('>')) {
            paramTypes.push(parseTypeAnnotatableIdentifier());
            if (!match('>')) {
                expect(',');
            }
        }
        expect('>');

        return markerApply(marker, delegate.createTypeParameterDeclaration(
            paramTypes
        ));
    }

    function parseTypeParameterInstantiation() {
        var marker = markerCreate(), oldInType = state.inType, paramTypes = [];

        state.inType = true;

        expect('<');
        while (!match('>')) {
            paramTypes.push(parseType());
            if (!match('>')) {
                expect(',');
            }
        }
        expect('>');

        state.inType = oldInType;

        return markerApply(marker, delegate.createTypeParameterInstantiation(
            paramTypes
        ));
    }

    function parseObjectTypeIndexer(marker, isStatic) {
        var id, key, value;

        expect('[');
        id = parseObjectPropertyKey();
        expect(':');
        key = parseType();
        expect(']');
        expect(':');
        value = parseType();

        return markerApply(marker, delegate.createObjectTypeIndexer(
            id,
            key,
            value,
            isStatic
        ));
    }

    function parseObjectTypeMethodish(marker) {
        var params = [], rest = null, returnType, typeParameters = null;
        if (match('<')) {
            typeParameters = parseTypeParameterDeclaration();
        }

        expect('(');
        while (lookahead.type === Token.Identifier) {
            params.push(parseFunctionTypeParam());
            if (!match(')')) {
                expect(',');
            }
        }

        if (match('...')) {
            lex();
            rest = parseFunctionTypeParam();
        }
        expect(')');
        expect(':');
        returnType = parseType();

        return markerApply(marker, delegate.createFunctionTypeAnnotation(
            params,
            returnType,
            rest,
            typeParameters
        ));
    }

    function parseObjectTypeMethod(marker, isStatic, key) {
        var optional = false, value;
        value = parseObjectTypeMethodish(marker);

        return markerApply(marker, delegate.createObjectTypeProperty(
            key,
            value,
            optional,
            isStatic
        ));
    }

    function parseObjectTypeCallProperty(marker, isStatic) {
        var valueMarker = markerCreate();
        return markerApply(marker, delegate.createObjectTypeCallProperty(
            parseObjectTypeMethodish(valueMarker),
            isStatic
        ));
    }

    function parseObjectType(allowStatic) {
        var callProperties = [], indexers = [], marker, optional = false,
            properties = [], propertyKey, propertyTypeAnnotation,
            token, isStatic, matchStatic;

        expect('{');

        while (!match('}')) {
            marker = markerCreate();
            matchStatic =
                   strict
                   ? matchKeyword('static')
                   : matchContextualKeyword('static');

            if (allowStatic && matchStatic) {
                token = lex();
                isStatic = true;
            }

            if (match('[')) {
                indexers.push(parseObjectTypeIndexer(marker, isStatic));
            } else if (match('(') || match('<')) {
                callProperties.push(parseObjectTypeCallProperty(marker, allowStatic));
            } else {
                if (isStatic && match(':')) {
                    propertyKey = markerApply(marker, delegate.createIdentifier(token));
                    throwErrorTolerant(token, Messages.StrictReservedWord);
                } else {
                    propertyKey = parseObjectPropertyKey();
                }
                if (match('<') || match('(')) {
                    // This is a method property
                    properties.push(parseObjectTypeMethod(marker, isStatic, propertyKey));
                } else {
                    if (match('?')) {
                        lex();
                        optional = true;
                    }
                    expect(':');
                    propertyTypeAnnotation = parseType();
                    properties.push(markerApply(marker, delegate.createObjectTypeProperty(
                        propertyKey,
                        propertyTypeAnnotation,
                        optional,
                        isStatic
                    )));
                }
            }

            if (match(';') || match(',')) {
                lex();
            } else if (!match('}')) {
                throwUnexpected(lookahead);
            }
        }

        expect('}');

        return delegate.createObjectTypeAnnotation(
            properties,
            indexers,
            callProperties
        );
    }

    function parseGenericType() {
        var marker = markerCreate(),
            typeParameters = null, typeIdentifier;

        typeIdentifier = parseVariableIdentifier();

        while (match('.')) {
            expect('.');
            typeIdentifier = markerApply(marker, delegate.createQualifiedTypeIdentifier(
                typeIdentifier,
                parseVariableIdentifier()
            ));
        }

        if (match('<')) {
            typeParameters = parseTypeParameterInstantiation();
        }

        return markerApply(marker, delegate.createGenericTypeAnnotation(
            typeIdentifier,
            typeParameters
        ));
    }

    function parseVoidType() {
        var marker = markerCreate();
        expectKeyword('void');
        return markerApply(marker, delegate.createVoidTypeAnnotation());
    }

    function parseTypeofType() {
        var argument, marker = markerCreate();
        expectKeyword('typeof');
        argument = parsePrimaryType();
        return markerApply(marker, delegate.createTypeofTypeAnnotation(
            argument
        ));
    }

    function parseTupleType() {
        var marker = markerCreate(), types = [];
        expect('[');
        // We allow trailing commas
        while (index < length && !match(']')) {
            types.push(parseType());
            if (match(']')) {
                break;
            }
            expect(',');
        }
        expect(']');
        return markerApply(marker, delegate.createTupleTypeAnnotation(
            types
        ));
    }

    function parseFunctionTypeParam() {
        var marker = markerCreate(), name, optional = false, typeAnnotation;
        name = parseVariableIdentifier();
        if (match('?')) {
            lex();
            optional = true;
        }
        expect(':');
        typeAnnotation = parseType();
        return markerApply(marker, delegate.createFunctionTypeParam(
            name,
            typeAnnotation,
            optional
        ));
    }

    function parseFunctionTypeParams() {
        var ret = { params: [], rest: null };
        while (lookahead.type === Token.Identifier) {
            ret.params.push(parseFunctionTypeParam());
            if (!match(')')) {
                expect(',');
            }
        }

        if (match('...')) {
            lex();
            ret.rest = parseFunctionTypeParam();
        }
        return ret;
    }

    // The parsing of types roughly parallels the parsing of expressions, and
    // primary types are kind of like primary expressions...they're the
    // primitives with which other types are constructed.
    function parsePrimaryType() {
        var params = null, returnType = null,
            marker = markerCreate(), rest = null, tmp,
            typeParameters, token, type, isGroupedType = false;

        switch (lookahead.type) {
        case Token.Identifier:
            switch (lookahead.value) {
            case 'any':
                lex();
                return markerApply(marker, delegate.createAnyTypeAnnotation());
            case 'bool':  // fallthrough
            case 'boolean':
                lex();
                return markerApply(marker, delegate.createBooleanTypeAnnotation());
            case 'number':
                lex();
                return markerApply(marker, delegate.createNumberTypeAnnotation());
            case 'string':
                lex();
                return markerApply(marker, delegate.createStringTypeAnnotation());
            }
            return markerApply(marker, parseGenericType());
        case Token.Punctuator:
            switch (lookahead.value) {
            case '{':
                return markerApply(marker, parseObjectType());
            case '[':
                return parseTupleType();
            case '<':
                typeParameters = parseTypeParameterDeclaration();
                expect('(');
                tmp = parseFunctionTypeParams();
                params = tmp.params;
                rest = tmp.rest;
                expect(')');

                expect('=>');

                returnType = parseType();

                return markerApply(marker, delegate.createFunctionTypeAnnotation(
                    params,
                    returnType,
                    rest,
                    typeParameters
                ));
            case '(':
                lex();
                // Check to see if this is actually a grouped type
                if (!match(')') && !match('...')) {
                    if (lookahead.type === Token.Identifier) {
                        token = lookahead2();
                        isGroupedType = token.value !== '?' && token.value !== ':';
                    } else {
                        isGroupedType = true;
                    }
                }

                if (isGroupedType) {
                    type = parseType();
                    expect(')');

                    // If we see a => next then someone was probably confused about
                    // function types, so we can provide a better error message
                    if (match('=>')) {
                        throwError({}, Messages.ConfusedAboutFunctionType);
                    }

                    return type;
                }

                tmp = parseFunctionTypeParams();
                params = tmp.params;
                rest = tmp.rest;

                expect(')');

                expect('=>');

                returnType = parseType();

                return markerApply(marker, delegate.createFunctionTypeAnnotation(
                    params,
                    returnType,
                    rest,
                    null /* typeParameters */
                ));
            }
            break;
        case Token.Keyword:
            switch (lookahead.value) {
            case 'void':
                return markerApply(marker, parseVoidType());
            case 'typeof':
                return markerApply(marker, parseTypeofType());
            }
            break;
        case Token.StringLiteral:
            token = lex();
            if (token.octal) {
                throwError(token, Messages.StrictOctalLiteral);
            }
            return markerApply(marker, delegate.createStringLiteralTypeAnnotation(
                token
            ));
        }

        throwUnexpected(lookahead);
    }

    function parsePostfixType() {
        var marker = markerCreate(), t = parsePrimaryType();
        if (match('[')) {
            expect('[');
            expect(']');
            return markerApply(marker, delegate.createArrayTypeAnnotation(t));
        }
        return t;
    }

    function parsePrefixType() {
        var marker = markerCreate();
        if (match('?')) {
            lex();
            return markerApply(marker, delegate.createNullableTypeAnnotation(
                parsePrefixType()
            ));
        }
        return parsePostfixType();
    }


    function parseIntersectionType() {
        var marker = markerCreate(), type, types;
        type = parsePrefixType();
        types = [type];
        while (match('&')) {
            lex();
            types.push(parsePrefixType());
        }

        return types.length === 1 ?
                type :
                markerApply(marker, delegate.createIntersectionTypeAnnotation(
                    types
                ));
    }

    function parseUnionType() {
        var marker = markerCreate(), type, types;
        type = parseIntersectionType();
        types = [type];
        while (match('|')) {
            lex();
            types.push(parseIntersectionType());
        }
        return types.length === 1 ?
                type :
                markerApply(marker, delegate.createUnionTypeAnnotation(
                    types
                ));
    }

    function parseType() {
        var oldInType = state.inType, type;
        state.inType = true;

        type = parseUnionType();

        state.inType = oldInType;
        return type;
    }

    function parseTypeAnnotation() {
        var marker = markerCreate(), type;

        expect(':');
        type = parseType();

        return markerApply(marker, delegate.createTypeAnnotation(type));
    }

    function parseVariableIdentifier() {
        var marker = markerCreate(),
            token = lex();

        if (token.type !== Token.Identifier) {
            throwUnexpected(token);
        }

        return markerApply(marker, delegate.createIdentifier(token.value));
    }

    function parseTypeAnnotatableIdentifier(requireTypeAnnotation, canBeOptionalParam) {
        var marker = markerCreate(),
            ident = parseVariableIdentifier(),
            isOptionalParam = false;

        if (canBeOptionalParam && match('?')) {
            expect('?');
            isOptionalParam = true;
        }

        if (requireTypeAnnotation || match(':')) {
            ident.typeAnnotation = parseTypeAnnotation();
            ident = markerApply(marker, ident);
        }

        if (isOptionalParam) {
            ident.optional = true;
            ident = markerApply(marker, ident);
        }

        return ident;
    }

    function parseVariableDeclaration(kind) {
        var id,
            marker = markerCreate(),
            init = null,
            typeAnnotationMarker = markerCreate();
        if (match('{')) {
            id = parseObjectInitialiser();
            reinterpretAsAssignmentBindingPattern(id);
            if (match(':')) {
                id.typeAnnotation = parseTypeAnnotation();
                markerApply(typeAnnotationMarker, id);
            }
        } else if (match('[')) {
            id = parseArrayInitialiser();
            reinterpretAsAssignmentBindingPattern(id);
            if (match(':')) {
                id.typeAnnotation = parseTypeAnnotation();
                markerApply(typeAnnotationMarker, id);
            }
        } else {
            /* istanbul ignore next */
            id = state.allowKeyword ? parseNonComputedProperty() : parseTypeAnnotatableIdentifier();
            // 12.2.1
            if (strict && isRestrictedWord(id.name)) {
                throwErrorTolerant({}, Messages.StrictVarName);
            }
        }

        if (kind === 'const') {
            if (!match('=')) {
                throwError({}, Messages.NoUninitializedConst);
            }
            expect('=');
            init = parseAssignmentExpression();
        } else if (match('=')) {
            lex();
            init = parseAssignmentExpression();
        }

        return markerApply(marker, delegate.createVariableDeclarator(id, init));
    }

    function parseVariableDeclarationList(kind) {
        var list = [];

        do {
            list.push(parseVariableDeclaration(kind));
            if (!match(',')) {
                break;
            }
            lex();
        } while (index < length);

        return list;
    }

    function parseVariableStatement() {
        var declarations, marker = markerCreate();

        expectKeyword('var');

        declarations = parseVariableDeclarationList();

        consumeSemicolon();

        return markerApply(marker, delegate.createVariableDeclaration(declarations, 'var'));
    }

    // kind may be `const` or `let`
    // Both are experimental and not in the specification yet.
    // see http://wiki.ecmascript.org/doku.php?id=harmony:const
    // and http://wiki.ecmascript.org/doku.php?id=harmony:let
    function parseConstLetDeclaration(kind) {
        var declarations, marker = markerCreate();

        expectKeyword(kind);

        declarations = parseVariableDeclarationList(kind);

        consumeSemicolon();

        return markerApply(marker, delegate.createVariableDeclaration(declarations, kind));
    }

    // people.mozilla.org/~jorendorff/es6-draft.html

    function parseModuleSpecifier() {
        var marker = markerCreate(),
            specifier;

        if (lookahead.type !== Token.StringLiteral) {
            throwError({}, Messages.InvalidModuleSpecifier);
        }
        specifier = delegate.createLiteral(lex());
        return markerApply(marker, specifier);
    }

    function parseExportBatchSpecifier() {
        var marker = markerCreate();
        expect('*');
        return markerApply(marker, delegate.createExportBatchSpecifier());
    }

    function parseExportSpecifier() {
        var id, name = null, marker = markerCreate();
        if (matchKeyword('default')) {
            lex();
            id = markerApply(marker, delegate.createIdentifier('default'));
            // export {default} from "something";
        } else {
            id = parseVariableIdentifier();
        }
        if (matchContextualKeyword('as')) {
            lex();
            name = parseNonComputedProperty();
        }

        return markerApply(marker, delegate.createExportSpecifier(id, name));
    }

    function parseExportDeclaration() {
        var declaration = null,
            possibleIdentifierToken, sourceElement,
            isExportFromIdentifier,
            src = null, specifiers = [],
            marker = markerCreate();

        expectKeyword('export');

        if (matchKeyword('default')) {
            // covers:
            // export default ...
            lex();
            if (matchKeyword('function') || matchKeyword('class')) {
                possibleIdentifierToken = lookahead2();
                if (isIdentifierName(possibleIdentifierToken)) {
                    // covers:
                    // export default function foo () {}
                    // export default class foo {}
                    sourceElement = parseSourceElement();
                    return markerApply(marker, delegate.createExportDeclaration(true, sourceElement, [sourceElement.id], null));
                }
                // covers:
                // export default function () {}
                // export default class {}
                switch (lookahead.value) {
                case 'class':
                    return markerApply(marker, delegate.createExportDeclaration(true, parseClassExpression(), [], null));
                case 'function':
                    return markerApply(marker, delegate.createExportDeclaration(true, parseFunctionExpression(), [], null));
                }
            }

            if (matchContextualKeyword('from')) {
                throwError({}, Messages.UnexpectedToken, lookahead.value);
            }

            // covers:
            // export default {};
            // export default [];
            if (match('{')) {
                declaration = parseObjectInitialiser();
            } else if (match('[')) {
                declaration = parseArrayInitialiser();
            } else {
                declaration = parseAssignmentExpression();
            }
            consumeSemicolon();
            return markerApply(marker, delegate.createExportDeclaration(true, declaration, [], null));
        }

        // non-default export
        if (lookahead.type === Token.Keyword || matchContextualKeyword('type')) {
            // covers:
            // export var f = 1;
            switch (lookahead.value) {
            case 'type':
            case 'let':
            case 'const':
            case 'var':
            case 'class':
            case 'function':
                return markerApply(marker, delegate.createExportDeclaration(false, parseSourceElement(), specifiers, null));
            }
        }

        if (match('*')) {
            // covers:
            // export * from "foo";
            specifiers.push(parseExportBatchSpecifier());

            if (!matchContextualKeyword('from')) {
                throwError({}, lookahead.value ?
                        Messages.UnexpectedToken : Messages.MissingFromClause, lookahead.value);
            }
            lex();
            src = parseModuleSpecifier();
            consumeSemicolon();

            return markerApply(marker, delegate.createExportDeclaration(false, null, specifiers, src));
        }

        expect('{');
        if (!match('}')) {
            do {
                isExportFromIdentifier = isExportFromIdentifier || matchKeyword('default');
                specifiers.push(parseExportSpecifier());
            } while (match(',') && lex());
        }
        expect('}');

        if (matchContextualKeyword('from')) {
            // covering:
            // export {default} from "foo";
            // export {foo} from "foo";
            lex();
            src = parseModuleSpecifier();
            consumeSemicolon();
        } else if (isExportFromIdentifier) {
            // covering:
            // export {default}; // missing fromClause
            throwError({}, lookahead.value ?
                    Messages.UnexpectedToken : Messages.MissingFromClause, lookahead.value);
        } else {
            // cover
            // export {foo};
            consumeSemicolon();
        }
        return markerApply(marker, delegate.createExportDeclaration(false, declaration, specifiers, src));
    }


    function parseImportSpecifier() {
        // import {<foo as bar>} ...;
        var id, name = null, marker = markerCreate();

        id = parseNonComputedProperty();
        if (matchContextualKeyword('as')) {
            lex();
            name = parseVariableIdentifier();
        }

        return markerApply(marker, delegate.createImportSpecifier(id, name));
    }

    function parseNamedImports() {
        var specifiers = [];
        // {foo, bar as bas}
        expect('{');
        if (!match('}')) {
            do {
                specifiers.push(parseImportSpecifier());
            } while (match(',') && lex());
        }
        expect('}');
        return specifiers;
    }

    function parseImportDefaultSpecifier() {
        // import <foo> ...;
        var id, marker = markerCreate();

        id = parseNonComputedProperty();

        return markerApply(marker, delegate.createImportDefaultSpecifier(id));
    }

    function parseImportNamespaceSpecifier() {
        // import <* as foo> ...;
        var id, marker = markerCreate();

        expect('*');
        if (!matchContextualKeyword('as')) {
            throwError({}, Messages.NoAsAfterImportNamespace);
        }
        lex();
        id = parseNonComputedProperty();

        return markerApply(marker, delegate.createImportNamespaceSpecifier(id));
    }

    function parseImportDeclaration() {
        var specifiers, src, marker = markerCreate(), isType = false, token2;

        expectKeyword('import');

        if (matchContextualKeyword('type')) {
            token2 = lookahead2();
            if ((token2.type === Token.Identifier && token2.value !== 'from') ||
                    (token2.type === Token.Punctuator &&
                        (token2.value === '{' || token2.value === '*'))) {
                isType = true;
                lex();
            }
        }

        specifiers = [];

        if (lookahead.type === Token.StringLiteral) {
            // covers:
            // import "foo";
            src = parseModuleSpecifier();
            consumeSemicolon();
            return markerApply(marker, delegate.createImportDeclaration(specifiers, src, isType));
        }

        if (!matchKeyword('default') && isIdentifierName(lookahead)) {
            // covers:
            // import foo
            // import foo, ...
            specifiers.push(parseImportDefaultSpecifier());
            if (match(',')) {
                lex();
            }
        }
        if (match('*')) {
            // covers:
            // import foo, * as foo
            // import * as foo
            specifiers.push(parseImportNamespaceSpecifier());
        } else if (match('{')) {
            // covers:
            // import foo, {bar}
            // import {bar}
            specifiers = specifiers.concat(parseNamedImports());
        }

        if (!matchContextualKeyword('from')) {
            throwError({}, lookahead.value ?
                    Messages.UnexpectedToken : Messages.MissingFromClause, lookahead.value);
        }
        lex();
        src = parseModuleSpecifier();
        consumeSemicolon();

        return markerApply(marker, delegate.createImportDeclaration(specifiers, src, isType));
    }

    // 12.3 Empty Statement

    function parseEmptyStatement() {
        var marker = markerCreate();
        expect(';');
        return markerApply(marker, delegate.createEmptyStatement());
    }

    // 12.4 Expression Statement

    function parseExpressionStatement() {
        var marker = markerCreate(), expr = parseExpression();
        consumeSemicolon();
        return markerApply(marker, delegate.createExpressionStatement(expr));
    }

    // 12.5 If statement

    function parseIfStatement() {
        var test, consequent, alternate, marker = markerCreate();

        expectKeyword('if');

        expect('(');

        test = parseExpression();

        expect(')');

        consequent = parseStatement();

        if (matchKeyword('else')) {
            lex();
            alternate = parseStatement();
        } else {
            alternate = null;
        }

        return markerApply(marker, delegate.createIfStatement(test, consequent, alternate));
    }

    // 12.6 Iteration Statements

    function parseDoWhileStatement() {
        var body, test, oldInIteration, marker = markerCreate();

        expectKeyword('do');

        oldInIteration = state.inIteration;
        state.inIteration = true;

        body = parseStatement();

        state.inIteration = oldInIteration;

        expectKeyword('while');

        expect('(');

        test = parseExpression();

        expect(')');

        if (match(';')) {
            lex();
        }

        return markerApply(marker, delegate.createDoWhileStatement(body, test));
    }

    function parseWhileStatement() {
        var test, body, oldInIteration, marker = markerCreate();

        expectKeyword('while');

        expect('(');

        test = parseExpression();

        expect(')');

        oldInIteration = state.inIteration;
        state.inIteration = true;

        body = parseStatement();

        state.inIteration = oldInIteration;

        return markerApply(marker, delegate.createWhileStatement(test, body));
    }

    function parseForVariableDeclaration() {
        var marker = markerCreate(),
            token = lex(),
            declarations = parseVariableDeclarationList();

        return markerApply(marker, delegate.createVariableDeclaration(declarations, token.value));
    }

    function parseForStatement(opts) {
        var init, test, update, left, right, body, operator, oldInIteration,
            marker = markerCreate();
        init = test = update = null;
        expectKeyword('for');

        // http://wiki.ecmascript.org/doku.php?id=proposals:iterators_and_generators&s=each
        if (matchContextualKeyword('each')) {
            throwError({}, Messages.EachNotAllowed);
        }

        expect('(');

        if (match(';')) {
            lex();
        } else {
            if (matchKeyword('var') || matchKeyword('let') || matchKeyword('const')) {
                state.allowIn = false;
                init = parseForVariableDeclaration();
                state.allowIn = true;

                if (init.declarations.length === 1) {
                    if (matchKeyword('in') || matchContextualKeyword('of')) {
                        operator = lookahead;
                        if (!((operator.value === 'in' || init.kind !== 'var') && init.declarations[0].init)) {
                            lex();
                            left = init;
                            right = parseExpression();
                            init = null;
                        }
                    }
                }
            } else {
                state.allowIn = false;
                init = parseExpression();
                state.allowIn = true;

                if (matchContextualKeyword('of')) {
                    operator = lex();
                    left = init;
                    right = parseExpression();
                    init = null;
                } else if (matchKeyword('in')) {
                    // LeftHandSideExpression
                    if (!isAssignableLeftHandSide(init)) {
                        throwError({}, Messages.InvalidLHSInForIn);
                    }
                    operator = lex();
                    left = init;
                    right = parseExpression();
                    init = null;
                }
            }

            if (typeof left === 'undefined') {
                expect(';');
            }
        }

        if (typeof left === 'undefined') {

            if (!match(';')) {
                test = parseExpression();
            }
            expect(';');

            if (!match(')')) {
                update = parseExpression();
            }
        }

        expect(')');

        oldInIteration = state.inIteration;
        state.inIteration = true;

        if (!(opts !== undefined && opts.ignoreBody)) {
            body = parseStatement();
        }

        state.inIteration = oldInIteration;

        if (typeof left === 'undefined') {
            return markerApply(marker, delegate.createForStatement(init, test, update, body));
        }

        if (operator.value === 'in') {
            return markerApply(marker, delegate.createForInStatement(left, right, body));
        }
        return markerApply(marker, delegate.createForOfStatement(left, right, body));
    }

    // 12.7 The continue statement

    function parseContinueStatement() {
        var label = null, marker = markerCreate();

        expectKeyword('continue');

        // Optimize the most common form: 'continue;'.
        if (source.charCodeAt(index) === 59) {
            lex();

            if (!state.inIteration) {
                throwError({}, Messages.IllegalContinue);
            }

            return markerApply(marker, delegate.createContinueStatement(null));
        }

        if (peekLineTerminator()) {
            if (!state.inIteration) {
                throwError({}, Messages.IllegalContinue);
            }

            return markerApply(marker, delegate.createContinueStatement(null));
        }

        if (lookahead.type === Token.Identifier) {
            label = parseVariableIdentifier();

            if (!state.labelSet.has(label.name)) {
                throwError({}, Messages.UnknownLabel, label.name);
            }
        }

        consumeSemicolon();

        if (label === null && !state.inIteration) {
            throwError({}, Messages.IllegalContinue);
        }

        return markerApply(marker, delegate.createContinueStatement(label));
    }

    // 12.8 The break statement

    function parseBreakStatement() {
        var label = null, marker = markerCreate();

        expectKeyword('break');

        // Catch the very common case first: immediately a semicolon (char #59).
        if (source.charCodeAt(index) === 59) {
            lex();

            if (!(state.inIteration || state.inSwitch)) {
                throwError({}, Messages.IllegalBreak);
            }

            return markerApply(marker, delegate.createBreakStatement(null));
        }

        if (peekLineTerminator()) {
            if (!(state.inIteration || state.inSwitch)) {
                throwError({}, Messages.IllegalBreak);
            }

            return markerApply(marker, delegate.createBreakStatement(null));
        }

        if (lookahead.type === Token.Identifier) {
            label = parseVariableIdentifier();

            if (!state.labelSet.has(label.name)) {
                throwError({}, Messages.UnknownLabel, label.name);
            }
        }

        consumeSemicolon();

        if (label === null && !(state.inIteration || state.inSwitch)) {
            throwError({}, Messages.IllegalBreak);
        }

        return markerApply(marker, delegate.createBreakStatement(label));
    }

    // 12.9 The return statement

    function parseReturnStatement() {
        var argument = null, marker = markerCreate();

        expectKeyword('return');

        if (!state.inFunctionBody) {
            throwErrorTolerant({}, Messages.IllegalReturn);
        }

        // 'return' followed by a space and an identifier is very common.
        if (source.charCodeAt(index) === 32) {
            if (isIdentifierStart(source.charCodeAt(index + 1))) {
                argument = parseExpression();
                consumeSemicolon();
                return markerApply(marker, delegate.createReturnStatement(argument));
            }
        }

        if (peekLineTerminator()) {
            return markerApply(marker, delegate.createReturnStatement(null));
        }

        if (!match(';')) {
            if (!match('}') && lookahead.type !== Token.EOF) {
                argument = parseExpression();
            }
        }

        consumeSemicolon();

        return markerApply(marker, delegate.createReturnStatement(argument));
    }

    // 12.10 The with statement

    function parseWithStatement() {
        var object, body, marker = markerCreate();

        if (strict) {
            throwErrorTolerant({}, Messages.StrictModeWith);
        }

        expectKeyword('with');

        expect('(');

        object = parseExpression();

        expect(')');

        body = parseStatement();

        return markerApply(marker, delegate.createWithStatement(object, body));
    }

    // 12.10 The swith statement

    function parseSwitchCase() {
        var test,
            consequent = [],
            sourceElement,
            marker = markerCreate();

        if (matchKeyword('default')) {
            lex();
            test = null;
        } else {
            expectKeyword('case');
            test = parseExpression();
        }
        expect(':');

        while (index < length) {
            if (match('}') || matchKeyword('default') || matchKeyword('case')) {
                break;
            }
            sourceElement = parseSourceElement();
            if (typeof sourceElement === 'undefined') {
                break;
            }
            consequent.push(sourceElement);
        }

        return markerApply(marker, delegate.createSwitchCase(test, consequent));
    }

    function parseSwitchStatement() {
        var discriminant, cases, clause, oldInSwitch, defaultFound, marker = markerCreate();

        expectKeyword('switch');

        expect('(');

        discriminant = parseExpression();

        expect(')');

        expect('{');

        cases = [];

        if (match('}')) {
            lex();
            return markerApply(marker, delegate.createSwitchStatement(discriminant, cases));
        }

        oldInSwitch = state.inSwitch;
        state.inSwitch = true;
        defaultFound = false;

        while (index < length) {
            if (match('}')) {
                break;
            }
            clause = parseSwitchCase();
            if (clause.test === null) {
                if (defaultFound) {
                    throwError({}, Messages.MultipleDefaultsInSwitch);
                }
                defaultFound = true;
            }
            cases.push(clause);
        }

        state.inSwitch = oldInSwitch;

        expect('}');

        return markerApply(marker, delegate.createSwitchStatement(discriminant, cases));
    }

    // 12.13 The throw statement

    function parseThrowStatement() {
        var argument, marker = markerCreate();

        expectKeyword('throw');

        if (peekLineTerminator()) {
            throwError({}, Messages.NewlineAfterThrow);
        }

        argument = parseExpression();

        consumeSemicolon();

        return markerApply(marker, delegate.createThrowStatement(argument));
    }

    // 12.14 The try statement

    function parseCatchClause() {
        var param, body, marker = markerCreate();

        expectKeyword('catch');

        expect('(');
        if (match(')')) {
            throwUnexpected(lookahead);
        }

        param = parseExpression();
        // 12.14.1
        if (strict && param.type === Syntax.Identifier && isRestrictedWord(param.name)) {
            throwErrorTolerant({}, Messages.StrictCatchVariable);
        }

        expect(')');
        body = parseBlock();
        return markerApply(marker, delegate.createCatchClause(param, body));
    }

    function parseTryStatement() {
        var block, handlers = [], finalizer = null, marker = markerCreate();

        expectKeyword('try');

        block = parseBlock();

        if (matchKeyword('catch')) {
            handlers.push(parseCatchClause());
        }

        if (matchKeyword('finally')) {
            lex();
            finalizer = parseBlock();
        }

        if (handlers.length === 0 && !finalizer) {
            throwError({}, Messages.NoCatchOrFinally);
        }

        return markerApply(marker, delegate.createTryStatement(block, [], handlers, finalizer));
    }

    // 12.15 The debugger statement

    function parseDebuggerStatement() {
        var marker = markerCreate();
        expectKeyword('debugger');

        consumeSemicolon();

        return markerApply(marker, delegate.createDebuggerStatement());
    }

    // 12 Statements

    function parseStatement() {
        var type = lookahead.type,
            marker,
            expr,
            labeledBody;

        if (type === Token.EOF) {
            throwUnexpected(lookahead);
        }

        if (type === Token.Punctuator) {
            switch (lookahead.value) {
            case ';':
                return parseEmptyStatement();
            case '{':
                return parseBlock();
            case '(':
                return parseExpressionStatement();
            default:
                break;
            }
        }

        if (type === Token.Keyword) {
            switch (lookahead.value) {
            case 'break':
                return parseBreakStatement();
            case 'continue':
                return parseContinueStatement();
            case 'debugger':
                return parseDebuggerStatement();
            case 'do':
                return parseDoWhileStatement();
            case 'for':
                return parseForStatement();
            case 'function':
                return parseFunctionDeclaration();
            case 'class':
                return parseClassDeclaration();
            case 'if':
                return parseIfStatement();
            case 'return':
                return parseReturnStatement();
            case 'switch':
                return parseSwitchStatement();
            case 'throw':
                return parseThrowStatement();
            case 'try':
                return parseTryStatement();
            case 'var':
                return parseVariableStatement();
            case 'while':
                return parseWhileStatement();
            case 'with':
                return parseWithStatement();
            default:
                break;
            }
        }

        if (matchAsyncFuncExprOrDecl()) {
            return parseFunctionDeclaration();
        }

        marker = markerCreate();
        expr = parseExpression();

        // 12.12 Labelled Statements
        if ((expr.type === Syntax.Identifier) && match(':')) {
            lex();

            if (state.labelSet.has(expr.name)) {
                throwError({}, Messages.Redeclaration, 'Label', expr.name);
            }

            state.labelSet.set(expr.name, true);
            labeledBody = parseStatement();
            state.labelSet.delete(expr.name);
            return markerApply(marker, delegate.createLabeledStatement(expr, labeledBody));
        }

        consumeSemicolon();

        return markerApply(marker, delegate.createExpressionStatement(expr));
    }

    // 13 Function Definition

    function parseConciseBody() {
        if (match('{')) {
            return parseFunctionSourceElements();
        }
        return parseAssignmentExpression();
    }

    function parseFunctionSourceElements() {
        var sourceElement, sourceElements = [], token, directive, firstRestricted,
            oldLabelSet, oldInIteration, oldInSwitch, oldInFunctionBody, oldParenthesizedCount,
            marker = markerCreate();

        expect('{');

        while (index < length) {
            if (lookahead.type !== Token.StringLiteral) {
                break;
            }
            token = lookahead;

            sourceElement = parseSourceElement();
            sourceElements.push(sourceElement);
            if (sourceElement.expression.type !== Syntax.Literal) {
                // this is not directive
                break;
            }
            directive = source.slice(token.range[0] + 1, token.range[1] - 1);
            if (directive === 'use strict') {
                strict = true;
                if (firstRestricted) {
                    throwErrorTolerant(firstRestricted, Messages.StrictOctalLiteral);
                }
            } else {
                if (!firstRestricted && token.octal) {
                    firstRestricted = token;
                }
            }
        }

        oldLabelSet = state.labelSet;
        oldInIteration = state.inIteration;
        oldInSwitch = state.inSwitch;
        oldInFunctionBody = state.inFunctionBody;
        oldParenthesizedCount = state.parenthesizedCount;

        state.labelSet = new StringMap();
        state.inIteration = false;
        state.inSwitch = false;
        state.inFunctionBody = true;
        state.parenthesizedCount = 0;

        while (index < length) {
            if (match('}')) {
                break;
            }
            sourceElement = parseSourceElement();
            if (typeof sourceElement === 'undefined') {
                break;
            }
            sourceElements.push(sourceElement);
        }

        expect('}');

        state.labelSet = oldLabelSet;
        state.inIteration = oldInIteration;
        state.inSwitch = oldInSwitch;
        state.inFunctionBody = oldInFunctionBody;
        state.parenthesizedCount = oldParenthesizedCount;

        return markerApply(marker, delegate.createBlockStatement(sourceElements));
    }

    function validateParam(options, param, name) {
        if (strict) {
            if (isRestrictedWord(name)) {
                options.stricted = param;
                options.message = Messages.StrictParamName;
            }
            if (options.paramSet.has(name)) {
                options.stricted = param;
                options.message = Messages.StrictParamDupe;
            }
        } else if (!options.firstRestricted) {
            if (isRestrictedWord(name)) {
                options.firstRestricted = param;
                options.message = Messages.StrictParamName;
            } else if (isStrictModeReservedWord(name)) {
                options.firstRestricted = param;
                options.message = Messages.StrictReservedWord;
            } else if (options.paramSet.has(name)) {
                options.firstRestricted = param;
                options.message = Messages.StrictParamDupe;
            }
        }
        options.paramSet.set(name, true);
    }

    function parseParam(options) {
        var marker, token, rest, param, def;

        token = lookahead;
        if (token.value === '...') {
            token = lex();
            rest = true;
        }

        if (match('[')) {
            marker = markerCreate();
            param = parseArrayInitialiser();
            reinterpretAsDestructuredParameter(options, param);
            if (match(':')) {
                param.typeAnnotation = parseTypeAnnotation();
                markerApply(marker, param);
            }
        } else if (match('{')) {
            marker = markerCreate();
            if (rest) {
                throwError({}, Messages.ObjectPatternAsRestParameter);
            }
            param = parseObjectInitialiser();
            reinterpretAsDestructuredParameter(options, param);
            if (match(':')) {
                param.typeAnnotation = parseTypeAnnotation();
                markerApply(marker, param);
            }
        } else {
            param =
                rest
                ? parseTypeAnnotatableIdentifier(
                    false, /* requireTypeAnnotation */
                    false /* canBeOptionalParam */
                )
                : parseTypeAnnotatableIdentifier(
                    false, /* requireTypeAnnotation */
                    true /* canBeOptionalParam */
                );

            validateParam(options, token, token.value);
        }

        if (match('=')) {
            if (rest) {
                throwErrorTolerant(lookahead, Messages.DefaultRestParameter);
            }
            lex();
            def = parseAssignmentExpression();
            ++options.defaultCount;
        }

        if (rest) {
            if (!match(')')) {
                throwError({}, Messages.ParameterAfterRestParameter);
            }
            options.rest = param;
            return false;
        }

        options.params.push(param);
        options.defaults.push(def);
        return !match(')');
    }

    function parseParams(firstRestricted) {
        var options, marker = markerCreate();

        options = {
            params: [],
            defaultCount: 0,
            defaults: [],
            rest: null,
            firstRestricted: firstRestricted
        };

        expect('(');

        if (!match(')')) {
            options.paramSet = new StringMap();
            while (index < length) {
                if (!parseParam(options)) {
                    break;
                }
                expect(',');
                if (!options.rest && match(')')) {
                    break;
                }
            }
        }

        expect(')');

        if (options.defaultCount === 0) {
            options.defaults = [];
        }

        if (match(':')) {
            options.returnType = parseTypeAnnotation();
        }

        return markerApply(marker, options);
    }

    function parseFunctionDeclaration() {
        var id, body, token, tmp, firstRestricted, message, generator, isAsync,
            previousStrict, previousYieldAllowed, previousAwaitAllowed,
            marker = markerCreate(), typeParameters;

        isAsync = false;
        if (matchAsync()) {
            lex();
            isAsync = true;
        }

        expectKeyword('function');

        generator = false;
        if (match('*')) {
            lex();
            generator = true;
        }

        token = lookahead;

        id = parseVariableIdentifier();

        if (match('<')) {
            typeParameters = parseTypeParameterDeclaration();
        }

        if (strict) {
            if (isRestrictedWord(token.value)) {
                throwErrorTolerant(token, Messages.StrictFunctionName);
            }
        } else {
            if (isRestrictedWord(token.value)) {
                firstRestricted = token;
                message = Messages.StrictFunctionName;
            } else if (isStrictModeReservedWord(token.value)) {
                firstRestricted = token;
                message = Messages.StrictReservedWord;
            }
        }

        tmp = parseParams(firstRestricted);
        firstRestricted = tmp.firstRestricted;
        if (tmp.message) {
            message = tmp.message;
        }

        previousStrict = strict;
        previousYieldAllowed = state.yieldAllowed;
        state.yieldAllowed = generator;
        previousAwaitAllowed = state.awaitAllowed;
        state.awaitAllowed = isAsync;

        body = parseFunctionSourceElements();

        if (strict && firstRestricted) {
            throwError(firstRestricted, message);
        }
        if (strict && tmp.stricted) {
            throwErrorTolerant(tmp.stricted, message);
        }
        strict = previousStrict;
        state.yieldAllowed = previousYieldAllowed;
        state.awaitAllowed = previousAwaitAllowed;

        return markerApply(
            marker,
            delegate.createFunctionDeclaration(
                id,
                tmp.params,
                tmp.defaults,
                body,
                tmp.rest,
                generator,
                false,
                isAsync,
                tmp.returnType,
                typeParameters
            )
        );
    }

    function parseFunctionExpression() {
        var token, id = null, firstRestricted, message, tmp, body, generator, isAsync,
            previousStrict, previousYieldAllowed, previousAwaitAllowed,
            marker = markerCreate(), typeParameters;

        isAsync = false;
        if (matchAsync()) {
            lex();
            isAsync = true;
        }

        expectKeyword('function');

        generator = false;

        if (match('*')) {
            lex();
            generator = true;
        }

        if (!match('(')) {
            if (!match('<')) {
                token = lookahead;
                id = parseVariableIdentifier();

                if (strict) {
                    if (isRestrictedWord(token.value)) {
                        throwErrorTolerant(token, Messages.StrictFunctionName);
                    }
                } else {
                    if (isRestrictedWord(token.value)) {
                        firstRestricted = token;
                        message = Messages.StrictFunctionName;
                    } else if (isStrictModeReservedWord(token.value)) {
                        firstRestricted = token;
                        message = Messages.StrictReservedWord;
                    }
                }
            }

            if (match('<')) {
                typeParameters = parseTypeParameterDeclaration();
            }
        }

        tmp = parseParams(firstRestricted);
        firstRestricted = tmp.firstRestricted;
        if (tmp.message) {
            message = tmp.message;
        }

        previousStrict = strict;
        previousYieldAllowed = state.yieldAllowed;
        state.yieldAllowed = generator;
        previousAwaitAllowed = state.awaitAllowed;
        state.awaitAllowed = isAsync;

        body = parseFunctionSourceElements();

        if (strict && firstRestricted) {
            throwError(firstRestricted, message);
        }
        if (strict && tmp.stricted) {
            throwErrorTolerant(tmp.stricted, message);
        }
        strict = previousStrict;
        state.yieldAllowed = previousYieldAllowed;
        state.awaitAllowed = previousAwaitAllowed;

        return markerApply(
            marker,
            delegate.createFunctionExpression(
                id,
                tmp.params,
                tmp.defaults,
                body,
                tmp.rest,
                generator,
                false,
                isAsync,
                tmp.returnType,
                typeParameters
            )
        );
    }

    function parseYieldExpression() {
        var delegateFlag, expr, marker = markerCreate();

        expectKeyword('yield', !strict);

        delegateFlag = false;
        if (match('*')) {
            lex();
            delegateFlag = true;
        }

        expr = parseAssignmentExpression();

        return markerApply(marker, delegate.createYieldExpression(expr, delegateFlag));
    }

    function parseAwaitExpression() {
        var expr, marker = markerCreate();
        expectContextualKeyword('await');
        expr = parseAssignmentExpression();
        return markerApply(marker, delegate.createAwaitExpression(expr));
    }

    // 14 Functions and classes

    // 14.1 Functions is defined above (13 in ES5)
    // 14.2 Arrow Functions Definitions is defined in (7.3 assignments)

    // 14.3 Method Definitions
    // 14.3.7
    function specialMethod(methodDefinition) {
        return methodDefinition.kind === 'get' ||
               methodDefinition.kind === 'set' ||
               methodDefinition.value.generator;
    }

    function parseMethodDefinition(key, isStatic, generator, computed) {
        var token, param, propType,
            isAsync, typeParameters, tokenValue, returnType;

        propType = isStatic ? ClassPropertyType.static : ClassPropertyType.prototype;

        if (generator) {
            return delegate.createMethodDefinition(
                propType,
                '',
                key,
                parsePropertyMethodFunction({ generator: true }),
                computed
            );
        }

        tokenValue = key.type === 'Identifier' && key.name;

        if (tokenValue === 'get' && !match('(')) {
            key = parseObjectPropertyKey();

            expect('(');
            expect(')');
            if (match(':')) {
                returnType = parseTypeAnnotation();
            }
            return delegate.createMethodDefinition(
                propType,
                'get',
                key,
                parsePropertyFunction({ generator: false, returnType: returnType }),
                computed
            );
        }
        if (tokenValue === 'set' && !match('(')) {
            key = parseObjectPropertyKey();

            expect('(');
            token = lookahead;
            param = [ parseTypeAnnotatableIdentifier() ];
            expect(')');
            if (match(':')) {
                returnType = parseTypeAnnotation();
            }
            return delegate.createMethodDefinition(
                propType,
                'set',
                key,
                parsePropertyFunction({
                    params: param,
                    generator: false,
                    name: token,
                    returnType: returnType
                }),
                computed
            );
        }

        if (match('<')) {
            typeParameters = parseTypeParameterDeclaration();
        }

        isAsync = tokenValue === 'async' && !match('(');
        if (isAsync) {
            key = parseObjectPropertyKey();
        }

        return delegate.createMethodDefinition(
            propType,
            '',
            key,
            parsePropertyMethodFunction({
                generator: false,
                async: isAsync,
                typeParameters: typeParameters
            }),
            computed
        );
    }

    function parseClassProperty(key, computed, isStatic) {
        var typeAnnotation;

        typeAnnotation = parseTypeAnnotation();
        expect(';');

        return delegate.createClassProperty(
            key,
            typeAnnotation,
            computed,
            isStatic
        );
    }

    function parseClassElement() {
        var computed = false, generator = false, key, marker = markerCreate(),
            isStatic = false, possiblyOpenBracketToken;
        if (match(';')) {
            lex();
            return undefined;
        }

        if (lookahead.value === 'static') {
            lex();
            isStatic = true;
        }

        if (match('*')) {
            lex();
            generator = true;
        }

        possiblyOpenBracketToken = lookahead;
        if (matchContextualKeyword('get') || matchContextualKeyword('set')) {
            possiblyOpenBracketToken = lookahead2();
        }

        if (possiblyOpenBracketToken.type === Token.Punctuator
                && possiblyOpenBracketToken.value === '[') {
            computed = true;
        }

        key = parseObjectPropertyKey();

        if (!generator && lookahead.value === ':') {
            return markerApply(marker, parseClassProperty(key, computed, isStatic));
        }

        return markerApply(marker, parseMethodDefinition(
            key,
            isStatic,
            generator,
            computed
        ));
    }

    function parseClassBody() {
        var classElement, classElements = [], existingProps = {},
            marker = markerCreate(), propName, propType;

        existingProps[ClassPropertyType.static] = new StringMap();
        existingProps[ClassPropertyType.prototype] = new StringMap();

        expect('{');

        while (index < length) {
            if (match('}')) {
                break;
            }
            classElement = parseClassElement(existingProps);

            if (typeof classElement !== 'undefined') {
                classElements.push(classElement);

                propName = !classElement.computed && getFieldName(classElement.key);
                if (propName !== false) {
                    propType = classElement.static ?
                                ClassPropertyType.static :
                                ClassPropertyType.prototype;

                    if (classElement.type === Syntax.MethodDefinition) {
                        if (propName === 'constructor' && !classElement.static) {
                            if (specialMethod(classElement)) {
                                throwError(classElement, Messages.IllegalClassConstructorProperty);
                            }
                            if (existingProps[ClassPropertyType.prototype].has('constructor')) {
                                throwError(classElement.key, Messages.IllegalDuplicateClassProperty);
                            }
                        }
                        existingProps[propType].set(propName, true);
                    }
                }
            }
        }

        expect('}');

        return markerApply(marker, delegate.createClassBody(classElements));
    }

    function parseClassImplements() {
        var id, implemented = [], marker, typeParameters;
        if (strict) {
            expectKeyword('implements');
        } else {
            expectContextualKeyword('implements');
        }
        while (index < length) {
            marker = markerCreate();
            id = parseVariableIdentifier();
            if (match('<')) {
                typeParameters = parseTypeParameterInstantiation();
            } else {
                typeParameters = null;
            }
            implemented.push(markerApply(marker, delegate.createClassImplements(
                id,
                typeParameters
            )));
            if (!match(',')) {
                break;
            }
            expect(',');
        }
        return implemented;
    }

    function parseClassExpression() {
        var id, implemented, previousYieldAllowed, superClass = null,
            superTypeParameters, marker = markerCreate(), typeParameters,
            matchImplements;

        expectKeyword('class');

        matchImplements =
                strict
                ? matchKeyword('implements')
                : matchContextualKeyword('implements');

        if (!matchKeyword('extends') && !matchImplements && !match('{')) {
            id = parseVariableIdentifier();
        }

        if (match('<')) {
            typeParameters = parseTypeParameterDeclaration();
        }

        if (matchKeyword('extends')) {
            expectKeyword('extends');
            previousYieldAllowed = state.yieldAllowed;
            state.yieldAllowed = false;
            superClass = parseLeftHandSideExpressionAllowCall();
            if (match('<')) {
                superTypeParameters = parseTypeParameterInstantiation();
            }
            state.yieldAllowed = previousYieldAllowed;
        }

        if (strict ? matchKeyword('implements') : matchContextualKeyword('implements')) {
            implemented = parseClassImplements();
        }

        return markerApply(marker, delegate.createClassExpression(
            id,
            superClass,
            parseClassBody(),
            typeParameters,
            superTypeParameters,
            implemented
        ));
    }

    function parseClassDeclaration() {
        var id, implemented, previousYieldAllowed, superClass = null,
            superTypeParameters, marker = markerCreate(), typeParameters;

        expectKeyword('class');

        id = parseVariableIdentifier();

        if (match('<')) {
            typeParameters = parseTypeParameterDeclaration();
        }

        if (matchKeyword('extends')) {
            expectKeyword('extends');
            previousYieldAllowed = state.yieldAllowed;
            state.yieldAllowed = false;
            superClass = parseLeftHandSideExpressionAllowCall();
            if (match('<')) {
                superTypeParameters = parseTypeParameterInstantiation();
            }
            state.yieldAllowed = previousYieldAllowed;
        }

        if (strict ? matchKeyword('implements') : matchContextualKeyword('implements')) {
            implemented = parseClassImplements();
        }

        return markerApply(marker, delegate.createClassDeclaration(
            id,
            superClass,
            parseClassBody(),
            typeParameters,
            superTypeParameters,
            implemented
        ));
    }

    // 15 Program

    function parseSourceElement() {
        var token;
        if (lookahead.type === Token.Keyword) {
            switch (lookahead.value) {
            case 'const':
            case 'let':
                return parseConstLetDeclaration(lookahead.value);
            case 'function':
                return parseFunctionDeclaration();
            case 'export':
                throwErrorTolerant({}, Messages.IllegalExportDeclaration);
                return parseExportDeclaration();
            case 'import':
                throwErrorTolerant({}, Messages.IllegalImportDeclaration);
                return parseImportDeclaration();
            case 'interface':
                if (lookahead2().type === Token.Identifier) {
                    return parseInterface();
                }
                return parseStatement();
            default:
                return parseStatement();
            }
        }

        if (matchContextualKeyword('type')
                && lookahead2().type === Token.Identifier) {
            return parseTypeAlias();
        }

        if (matchContextualKeyword('interface')
                && lookahead2().type === Token.Identifier) {
            return parseInterface();
        }

        if (matchContextualKeyword('declare')) {
            token = lookahead2();
            if (token.type === Token.Keyword) {
                switch (token.value) {
                case 'class':
                    return parseDeclareClass();
                case 'function':
                    return parseDeclareFunction();
                case 'var':
                    return parseDeclareVariable();
                }
            } else if (token.type === Token.Identifier
                    && token.value === 'module') {
                return parseDeclareModule();
            }
        }

        if (lookahead.type !== Token.EOF) {
            return parseStatement();
        }
    }

    function parseProgramElement() {
        var isModule = extra.sourceType === 'module' || extra.sourceType === 'nonStrictModule';

        if (isModule && lookahead.type === Token.Keyword) {
            switch (lookahead.value) {
            case 'export':
                return parseExportDeclaration();
            case 'import':
                return parseImportDeclaration();
            }
        }

        return parseSourceElement();
    }

    function parseProgramElements() {
        var sourceElement, sourceElements = [], token, directive, firstRestricted;

        while (index < length) {
            token = lookahead;
            if (token.type !== Token.StringLiteral) {
                break;
            }

            sourceElement = parseProgramElement();
            sourceElements.push(sourceElement);
            if (sourceElement.expression.type !== Syntax.Literal) {
                // this is not directive
                break;
            }
            directive = source.slice(token.range[0] + 1, token.range[1] - 1);
            if (directive === 'use strict') {
                strict = true;
                if (firstRestricted) {
                    throwErrorTolerant(firstRestricted, Messages.StrictOctalLiteral);
                }
            } else {
                if (!firstRestricted && token.octal) {
                    firstRestricted = token;
                }
            }
        }

        while (index < length) {
            sourceElement = parseProgramElement();
            if (typeof sourceElement === 'undefined') {
                break;
            }
            sourceElements.push(sourceElement);
        }
        return sourceElements;
    }

    function parseProgram() {
        var body, marker = markerCreate();
        strict = extra.sourceType === 'module';
        peek();
        body = parseProgramElements();
        return markerApply(marker, delegate.createProgram(body));
    }

    // 16 JSX

    XHTMLEntities = {
        quot: '\u0022',
        amp: '&',
        apos: '\u0027',
        lt: '<',
        gt: '>',
        nbsp: '\u00A0',
        iexcl: '\u00A1',
        cent: '\u00A2',
        pound: '\u00A3',
        curren: '\u00A4',
        yen: '\u00A5',
        brvbar: '\u00A6',
        sect: '\u00A7',
        uml: '\u00A8',
        copy: '\u00A9',
        ordf: '\u00AA',
        laquo: '\u00AB',
        not: '\u00AC',
        shy: '\u00AD',
        reg: '\u00AE',
        macr: '\u00AF',
        deg: '\u00B0',
        plusmn: '\u00B1',
        sup2: '\u00B2',
        sup3: '\u00B3',
        acute: '\u00B4',
        micro: '\u00B5',
        para: '\u00B6',
        middot: '\u00B7',
        cedil: '\u00B8',
        sup1: '\u00B9',
        ordm: '\u00BA',
        raquo: '\u00BB',
        frac14: '\u00BC',
        frac12: '\u00BD',
        frac34: '\u00BE',
        iquest: '\u00BF',
        Agrave: '\u00C0',
        Aacute: '\u00C1',
        Acirc: '\u00C2',
        Atilde: '\u00C3',
        Auml: '\u00C4',
        Aring: '\u00C5',
        AElig: '\u00C6',
        Ccedil: '\u00C7',
        Egrave: '\u00C8',
        Eacute: '\u00C9',
        Ecirc: '\u00CA',
        Euml: '\u00CB',
        Igrave: '\u00CC',
        Iacute: '\u00CD',
        Icirc: '\u00CE',
        Iuml: '\u00CF',
        ETH: '\u00D0',
        Ntilde: '\u00D1',
        Ograve: '\u00D2',
        Oacute: '\u00D3',
        Ocirc: '\u00D4',
        Otilde: '\u00D5',
        Ouml: '\u00D6',
        times: '\u00D7',
        Oslash: '\u00D8',
        Ugrave: '\u00D9',
        Uacute: '\u00DA',
        Ucirc: '\u00DB',
        Uuml: '\u00DC',
        Yacute: '\u00DD',
        THORN: '\u00DE',
        szlig: '\u00DF',
        agrave: '\u00E0',
        aacute: '\u00E1',
        acirc: '\u00E2',
        atilde: '\u00E3',
        auml: '\u00E4',
        aring: '\u00E5',
        aelig: '\u00E6',
        ccedil: '\u00E7',
        egrave: '\u00E8',
        eacute: '\u00E9',
        ecirc: '\u00EA',
        euml: '\u00EB',
        igrave: '\u00EC',
        iacute: '\u00ED',
        icirc: '\u00EE',
        iuml: '\u00EF',
        eth: '\u00F0',
        ntilde: '\u00F1',
        ograve: '\u00F2',
        oacute: '\u00F3',
        ocirc: '\u00F4',
        otilde: '\u00F5',
        ouml: '\u00F6',
        divide: '\u00F7',
        oslash: '\u00F8',
        ugrave: '\u00F9',
        uacute: '\u00FA',
        ucirc: '\u00FB',
        uuml: '\u00FC',
        yacute: '\u00FD',
        thorn: '\u00FE',
        yuml: '\u00FF',
        OElig: '\u0152',
        oelig: '\u0153',
        Scaron: '\u0160',
        scaron: '\u0161',
        Yuml: '\u0178',
        fnof: '\u0192',
        circ: '\u02C6',
        tilde: '\u02DC',
        Alpha: '\u0391',
        Beta: '\u0392',
        Gamma: '\u0393',
        Delta: '\u0394',
        Epsilon: '\u0395',
        Zeta: '\u0396',
        Eta: '\u0397',
        Theta: '\u0398',
        Iota: '\u0399',
        Kappa: '\u039A',
        Lambda: '\u039B',
        Mu: '\u039C',
        Nu: '\u039D',
        Xi: '\u039E',
        Omicron: '\u039F',
        Pi: '\u03A0',
        Rho: '\u03A1',
        Sigma: '\u03A3',
        Tau: '\u03A4',
        Upsilon: '\u03A5',
        Phi: '\u03A6',
        Chi: '\u03A7',
        Psi: '\u03A8',
        Omega: '\u03A9',
        alpha: '\u03B1',
        beta: '\u03B2',
        gamma: '\u03B3',
        delta: '\u03B4',
        epsilon: '\u03B5',
        zeta: '\u03B6',
        eta: '\u03B7',
        theta: '\u03B8',
        iota: '\u03B9',
        kappa: '\u03BA',
        lambda: '\u03BB',
        mu: '\u03BC',
        nu: '\u03BD',
        xi: '\u03BE',
        omicron: '\u03BF',
        pi: '\u03C0',
        rho: '\u03C1',
        sigmaf: '\u03C2',
        sigma: '\u03C3',
        tau: '\u03C4',
        upsilon: '\u03C5',
        phi: '\u03C6',
        chi: '\u03C7',
        psi: '\u03C8',
        omega: '\u03C9',
        thetasym: '\u03D1',
        upsih: '\u03D2',
        piv: '\u03D6',
        ensp: '\u2002',
        emsp: '\u2003',
        thinsp: '\u2009',
        zwnj: '\u200C',
        zwj: '\u200D',
        lrm: '\u200E',
        rlm: '\u200F',
        ndash: '\u2013',
        mdash: '\u2014',
        lsquo: '\u2018',
        rsquo: '\u2019',
        sbquo: '\u201A',
        ldquo: '\u201C',
        rdquo: '\u201D',
        bdquo: '\u201E',
        dagger: '\u2020',
        Dagger: '\u2021',
        bull: '\u2022',
        hellip: '\u2026',
        permil: '\u2030',
        prime: '\u2032',
        Prime: '\u2033',
        lsaquo: '\u2039',
        rsaquo: '\u203A',
        oline: '\u203E',
        frasl: '\u2044',
        euro: '\u20AC',
        image: '\u2111',
        weierp: '\u2118',
        real: '\u211C',
        trade: '\u2122',
        alefsym: '\u2135',
        larr: '\u2190',
        uarr: '\u2191',
        rarr: '\u2192',
        darr: '\u2193',
        harr: '\u2194',
        crarr: '\u21B5',
        lArr: '\u21D0',
        uArr: '\u21D1',
        rArr: '\u21D2',
        dArr: '\u21D3',
        hArr: '\u21D4',
        forall: '\u2200',
        part: '\u2202',
        exist: '\u2203',
        empty: '\u2205',
        nabla: '\u2207',
        isin: '\u2208',
        notin: '\u2209',
        ni: '\u220B',
        prod: '\u220F',
        sum: '\u2211',
        minus: '\u2212',
        lowast: '\u2217',
        radic: '\u221A',
        prop: '\u221D',
        infin: '\u221E',
        ang: '\u2220',
        and: '\u2227',
        or: '\u2228',
        cap: '\u2229',
        cup: '\u222A',
        'int': '\u222B',
        there4: '\u2234',
        sim: '\u223C',
        cong: '\u2245',
        asymp: '\u2248',
        ne: '\u2260',
        equiv: '\u2261',
        le: '\u2264',
        ge: '\u2265',
        sub: '\u2282',
        sup: '\u2283',
        nsub: '\u2284',
        sube: '\u2286',
        supe: '\u2287',
        oplus: '\u2295',
        otimes: '\u2297',
        perp: '\u22A5',
        sdot: '\u22C5',
        lceil: '\u2308',
        rceil: '\u2309',
        lfloor: '\u230A',
        rfloor: '\u230B',
        lang: '\u2329',
        rang: '\u232A',
        loz: '\u25CA',
        spades: '\u2660',
        clubs: '\u2663',
        hearts: '\u2665',
        diams: '\u2666'
    };

    function getQualifiedJSXName(object) {
        if (object.type === Syntax.JSXIdentifier) {
            return object.name;
        }
        if (object.type === Syntax.JSXNamespacedName) {
            return object.namespace.name + ':' + object.name.name;
        }
        /* istanbul ignore else */
        if (object.type === Syntax.JSXMemberExpression) {
            return (
                getQualifiedJSXName(object.object) + '.' +
                getQualifiedJSXName(object.property)
            );
        }
        /* istanbul ignore next */
        throwUnexpected(object);
    }

    function isJSXIdentifierStart(ch) {
        // exclude backslash (\)
        return (ch !== 92) && isIdentifierStart(ch);
    }

    function isJSXIdentifierPart(ch) {
        // exclude backslash (\) and add hyphen (-)
        return (ch !== 92) && (ch === 45 || isIdentifierPart(ch));
    }

    function scanJSXIdentifier() {
        var ch, start, value = '';

        start = index;
        while (index < length) {
            ch = source.charCodeAt(index);
            if (!isJSXIdentifierPart(ch)) {
                break;
            }
            value += source[index++];
        }

        return {
            type: Token.JSXIdentifier,
            value: value,
            lineNumber: lineNumber,
            lineStart: lineStart,
            range: [start, index]
        };
    }

    function scanJSXEntity() {
        var ch, str = '', start = index, count = 0, code;
        ch = source[index];
        assert(ch === '&', 'Entity must start with an ampersand');
        index++;
        while (index < length && count++ < 10) {
            ch = source[index++];
            if (ch === ';') {
                break;
            }
            str += ch;
        }

        // Well-formed entity (ending was found).
        if (ch === ';') {
            // Numeric entity.
            if (str[0] === '#') {
                if (str[1] === 'x') {
                    code = +('0' + str.substr(1));
                } else {
                    // Removing leading zeros in order to avoid treating as octal in old browsers.
                    code = +str.substr(1).replace(Regex.LeadingZeros, '');
                }

                if (!isNaN(code)) {
                    return String.fromCharCode(code);
                }
            /* istanbul ignore else */
            } else if (XHTMLEntities[str]) {
                return XHTMLEntities[str];
            }
        }

        // Treat non-entity sequences as regular text.
        index = start + 1;
        return '&';
    }

    function scanJSXText(stopChars) {
        var ch, str = '', start;
        start = index;
        while (index < length) {
            ch = source[index];
            if (stopChars.indexOf(ch) !== -1) {
                break;
            }
            if (ch === '&') {
                str += scanJSXEntity();
            } else {
                index++;
                if (ch === '\r' && source[index] === '\n') {
                    str += ch;
                    ch = source[index];
                    index++;
                }
                if (isLineTerminator(ch.charCodeAt(0))) {
                    ++lineNumber;
                    lineStart = index;
                }
                str += ch;
            }
        }
        return {
            type: Token.JSXText,
            value: str,
            lineNumber: lineNumber,
            lineStart: lineStart,
            range: [start, index]
        };
    }

    function scanJSXStringLiteral() {
        var innerToken, quote, start;

        quote = source[index];
        assert((quote === '\'' || quote === '"'),
            'String literal must starts with a quote');

        start = index;
        ++index;

        innerToken = scanJSXText([quote]);

        if (quote !== source[index]) {
            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
        }

        ++index;

        innerToken.range = [start, index];

        return innerToken;
    }

    /**
     * Between JSX opening and closing tags (e.g. <foo>HERE</foo>), anything that
     * is not another JSX tag and is not an expression wrapped by {} is text.
     */
    function advanceJSXChild() {
        var ch = source.charCodeAt(index);

        // '<' 60, '>' 62, '{' 123, '}' 125
        if (ch !== 60 && ch !== 62 && ch !== 123 && ch !== 125) {
            return scanJSXText(['<', '>', '{', '}']);
        }

        return scanPunctuator();
    }

    function parseJSXIdentifier() {
        var token, marker = markerCreate();

        if (lookahead.type !== Token.JSXIdentifier) {
            throwUnexpected(lookahead);
        }

        token = lex();
        return markerApply(marker, delegate.createJSXIdentifier(token.value));
    }

    function parseJSXNamespacedName() {
        var namespace, name, marker = markerCreate();

        namespace = parseJSXIdentifier();
        expect(':');
        name = parseJSXIdentifier();

        return markerApply(marker, delegate.createJSXNamespacedName(namespace, name));
    }

    function parseJSXMemberExpression() {
        var marker = markerCreate(),
            expr = parseJSXIdentifier();

        while (match('.')) {
            lex();
            expr = markerApply(marker, delegate.createJSXMemberExpression(expr, parseJSXIdentifier()));
        }

        return expr;
    }

    function parseJSXElementName() {
        if (lookahead2().value === ':') {
            return parseJSXNamespacedName();
        }
        if (lookahead2().value === '.') {
            return parseJSXMemberExpression();
        }

        return parseJSXIdentifier();
    }

    function parseJSXAttributeName() {
        if (lookahead2().value === ':') {
            return parseJSXNamespacedName();
        }

        return parseJSXIdentifier();
    }

    function parseJSXAttributeValue() {
        var value, marker;
        if (match('{')) {
            value = parseJSXExpressionContainer();
            if (value.expression.type === Syntax.JSXEmptyExpression) {
                throwError(
                    value,
                    'JSX attributes must only be assigned a non-empty ' +
                        'expression'
                );
            }
        } else if (match('<')) {
            value = parseJSXElement();
        } else if (lookahead.type === Token.JSXText) {
            marker = markerCreate();
            value = markerApply(marker, delegate.createLiteral(lex()));
        } else {
            throwError({}, Messages.InvalidJSXAttributeValue);
        }
        return value;
    }

    function parseJSXEmptyExpression() {
        var ch, marker = markerCreatePreserveWhitespace();
        while (index < length) {
            ch = source.charCodeAt(index);
            if (ch === 125) {
                break;
            } else if (isLineTerminator(ch)) {
                if (ch === 13 && source.charCodeAt(index + 1) === 10) {
                    ++index;
                }
                ++lineNumber;
                lineStart = index;
            }
            ++index;
        }
        return markerApply(marker, delegate.createJSXEmptyExpression());
    }

    function parseJSXExpressionContainer() {
        var expression, origInJSXChild, origInJSXTag, marker = markerCreate();

        origInJSXChild = state.inJSXChild;
        origInJSXTag = state.inJSXTag;
        state.inJSXChild = false;
        state.inJSXTag = false;

        expect('{');

        if (match('}')) {
            expression = parseJSXEmptyExpression();
        } else {
            expression = parseExpression();
        }

        state.inJSXChild = origInJSXChild;
        state.inJSXTag = origInJSXTag;

        expect('}');

        return markerApply(marker, delegate.createJSXExpressionContainer(expression));
    }

    function parseJSXSpreadAttribute() {
        var expression, origInJSXChild, origInJSXTag, marker = markerCreate();

        origInJSXChild = state.inJSXChild;
        origInJSXTag = state.inJSXTag;
        state.inJSXChild = false;
        state.inJSXTag = false;

        expect('{');
        expect('...');

        expression = parseAssignmentExpression();

        state.inJSXChild = origInJSXChild;
        state.inJSXTag = origInJSXTag;

        expect('}');

        return markerApply(marker, delegate.createJSXSpreadAttribute(expression));
    }

    function parseJSXAttribute() {
        var name, marker;

        if (match('{')) {
            return parseJSXSpreadAttribute();
        }

        marker = markerCreate();

        name = parseJSXAttributeName();

        // HTML empty attribute
        if (match('=')) {
            lex();
            return markerApply(marker, delegate.createJSXAttribute(name, parseJSXAttributeValue()));
        }

        return markerApply(marker, delegate.createJSXAttribute(name));
    }

    function parseJSXChild() {
        var token, marker;
        if (match('{')) {
            token = parseJSXExpressionContainer();
        } else if (lookahead.type === Token.JSXText) {
            marker = markerCreatePreserveWhitespace();
            token = markerApply(marker, delegate.createLiteral(lex()));
        } else if (match('<')) {
            token = parseJSXElement();
        } else {
            throwUnexpected(lookahead);
        }
        return token;
    }

    function parseJSXClosingElement() {
        var name, origInJSXChild, origInJSXTag, marker = markerCreate();
        origInJSXChild = state.inJSXChild;
        origInJSXTag = state.inJSXTag;
        state.inJSXChild = false;
        state.inJSXTag = true;
        expect('<');
        expect('/');
        name = parseJSXElementName();
        // Because advance() (called by lex() called by expect()) expects there
        // to be a valid token after >, it needs to know whether to look for a
        // standard JS token or an JSX text node
        state.inJSXChild = origInJSXChild;
        state.inJSXTag = origInJSXTag;
        expect('>');
        return markerApply(marker, delegate.createJSXClosingElement(name));
    }

    function parseJSXOpeningElement() {
        var name, attributes = [], selfClosing = false, origInJSXChild, origInJSXTag, marker = markerCreate();

        origInJSXChild = state.inJSXChild;
        origInJSXTag = state.inJSXTag;
        state.inJSXChild = false;
        state.inJSXTag = true;

        expect('<');

        name = parseJSXElementName();

        while (index < length &&
                lookahead.value !== '/' &&
                lookahead.value !== '>') {
            attributes.push(parseJSXAttribute());
        }

        state.inJSXTag = origInJSXTag;

        if (lookahead.value === '/') {
            expect('/');
            // Because advance() (called by lex() called by expect()) expects
            // there to be a valid token after >, it needs to know whether to
            // look for a standard JS token or an JSX text node
            state.inJSXChild = origInJSXChild;
            expect('>');
            selfClosing = true;
        } else {
            state.inJSXChild = true;
            expect('>');
        }
        return markerApply(marker, delegate.createJSXOpeningElement(name, attributes, selfClosing));
    }

    function parseJSXElement() {
        var openingElement, closingElement = null, children = [], origInJSXChild, origInJSXTag, marker = markerCreate();

        origInJSXChild = state.inJSXChild;
        origInJSXTag = state.inJSXTag;
        openingElement = parseJSXOpeningElement();

        if (!openingElement.selfClosing) {
            while (index < length) {
                state.inJSXChild = false; // Call lookahead2() with inJSXChild = false because </ should not be considered in the child
                if (lookahead.value === '<' && lookahead2().value === '/') {
                    break;
                }
                state.inJSXChild = true;
                children.push(parseJSXChild());
            }
            state.inJSXChild = origInJSXChild;
            state.inJSXTag = origInJSXTag;
            closingElement = parseJSXClosingElement();
            if (getQualifiedJSXName(closingElement.name) !== getQualifiedJSXName(openingElement.name)) {
                throwError({}, Messages.ExpectedJSXClosingTag, getQualifiedJSXName(openingElement.name));
            }
        }

        // When (erroneously) writing two adjacent tags like
        //
        //     var x = <div>one</div><div>two</div>;
        //
        // the default error message is a bit incomprehensible. Since it's
        // rarely (never?) useful to write a less-than sign after an JSX
        // element, we disallow it here in the parser in order to provide a
        // better error message. (In the rare case that the less-than operator
        // was intended, the left tag can be wrapped in parentheses.)
        if (!origInJSXChild && match('<')) {
            throwError(lookahead, Messages.AdjacentJSXElements);
        }

        return markerApply(marker, delegate.createJSXElement(openingElement, closingElement, children));
    }

    function parseTypeAlias() {
        var id, marker = markerCreate(), typeParameters = null, right;
        expectContextualKeyword('type');
        id = parseVariableIdentifier();
        if (match('<')) {
            typeParameters = parseTypeParameterDeclaration();
        }
        expect('=');
        right = parseType();
        consumeSemicolon();
        return markerApply(marker, delegate.createTypeAlias(id, typeParameters, right));
    }

    function parseInterfaceExtends() {
        var marker = markerCreate(), id, typeParameters = null;

        id = parseVariableIdentifier();
        if (match('<')) {
            typeParameters = parseTypeParameterInstantiation();
        }

        return markerApply(marker, delegate.createInterfaceExtends(
            id,
            typeParameters
        ));
    }

    function parseInterfaceish(marker, allowStatic) {
        var body, bodyMarker, extended = [], id,
            typeParameters = null;

        id = parseVariableIdentifier();
        if (match('<')) {
            typeParameters = parseTypeParameterDeclaration();
        }

        if (matchKeyword('extends')) {
            expectKeyword('extends');

            while (index < length) {
                extended.push(parseInterfaceExtends());
                if (!match(',')) {
                    break;
                }
                expect(',');
            }
        }

        bodyMarker = markerCreate();
        body = markerApply(bodyMarker, parseObjectType(allowStatic));

        return markerApply(marker, delegate.createInterface(
            id,
            typeParameters,
            body,
            extended
        ));
    }

    function parseInterface() {
        var marker = markerCreate();

        if (strict) {
            expectKeyword('interface');
        } else {
            expectContextualKeyword('interface');
        }

        return parseInterfaceish(marker, /* allowStatic */false);
    }

    function parseDeclareClass() {
        var marker = markerCreate(), ret;
        expectContextualKeyword('declare');
        expectKeyword('class');

        ret = parseInterfaceish(marker, /* allowStatic */true);
        ret.type = Syntax.DeclareClass;
        return ret;
    }

    function parseDeclareFunction() {
        var id, idMarker,
            marker = markerCreate(), params, returnType, rest, tmp,
            typeParameters = null, value, valueMarker;

        expectContextualKeyword('declare');
        expectKeyword('function');
        idMarker = markerCreate();
        id = parseVariableIdentifier();

        valueMarker = markerCreate();
        if (match('<')) {
            typeParameters = parseTypeParameterDeclaration();
        }
        expect('(');
        tmp = parseFunctionTypeParams();
        params = tmp.params;
        rest = tmp.rest;
        expect(')');

        expect(':');
        returnType = parseType();

        value = markerApply(valueMarker, delegate.createFunctionTypeAnnotation(
            params,
            returnType,
            rest,
            typeParameters
        ));

        id.typeAnnotation = markerApply(valueMarker, delegate.createTypeAnnotation(
            value
        ));
        markerApply(idMarker, id);

        consumeSemicolon();

        return markerApply(marker, delegate.createDeclareFunction(
            id
        ));
    }

    function parseDeclareVariable() {
        var id, marker = markerCreate();
        expectContextualKeyword('declare');
        expectKeyword('var');
        id = parseTypeAnnotatableIdentifier();

        consumeSemicolon();

        return markerApply(marker, delegate.createDeclareVariable(
            id
        ));
    }

    function parseDeclareModule() {
        var body = [], bodyMarker, id, idMarker, marker = markerCreate(), token;
        expectContextualKeyword('declare');
        expectContextualKeyword('module');

        if (lookahead.type === Token.StringLiteral) {
            if (strict && lookahead.octal) {
                throwErrorTolerant(lookahead, Messages.StrictOctalLiteral);
            }
            idMarker = markerCreate();
            id = markerApply(idMarker, delegate.createLiteral(lex()));
        } else {
            id = parseVariableIdentifier();
        }

        bodyMarker = markerCreate();
        expect('{');
        while (index < length && !match('}')) {
            token = lookahead2();
            switch (token.value) {
            case 'class':
                body.push(parseDeclareClass());
                break;
            case 'function':
                body.push(parseDeclareFunction());
                break;
            case 'var':
                body.push(parseDeclareVariable());
                break;
            default:
                throwUnexpected(lookahead);
            }
        }
        expect('}');

        return markerApply(marker, delegate.createDeclareModule(
            id,
            markerApply(bodyMarker, delegate.createBlockStatement(body))
        ));
    }

    function collectToken() {
        var loc, token, range, value, entry;

        /* istanbul ignore else */
        if (!state.inJSXChild) {
            skipComment();
        }

        loc = {
            start: {
                line: lineNumber,
                column: index - lineStart
            }
        };

        token = extra.advance();
        loc.end = {
            line: lineNumber,
            column: index - lineStart
        };

        if (token.type !== Token.EOF) {
            range = [token.range[0], token.range[1]];
            value = source.slice(token.range[0], token.range[1]);
            entry = {
                type: TokenName[token.type],
                value: value,
                range: range,
                loc: loc
            };
            if (token.regex) {
                entry.regex = {
                    pattern: token.regex.pattern,
                    flags: token.regex.flags
                };
            }
            extra.tokens.push(entry);
        }

        return token;
    }

    function collectRegex() {
        var pos, loc, regex, token;

        skipComment();

        pos = index;
        loc = {
            start: {
                line: lineNumber,
                column: index - lineStart
            }
        };

        regex = extra.scanRegExp();
        loc.end = {
            line: lineNumber,
            column: index - lineStart
        };

        if (!extra.tokenize) {
            /* istanbul ignore next */
            // Pop the previous token, which is likely '/' or '/='
            if (extra.tokens.length > 0) {
                token = extra.tokens[extra.tokens.length - 1];
                if (token.range[0] === pos && token.type === 'Punctuator') {
                    if (token.value === '/' || token.value === '/=') {
                        extra.tokens.pop();
                    }
                }
            }

            extra.tokens.push({
                type: 'RegularExpression',
                value: regex.literal,
                regex: regex.regex,
                range: [pos, index],
                loc: loc
            });
        }

        return regex;
    }

    function filterTokenLocation() {
        var i, entry, token, tokens = [];

        for (i = 0; i < extra.tokens.length; ++i) {
            entry = extra.tokens[i];
            token = {
                type: entry.type,
                value: entry.value
            };
            if (entry.regex) {
                token.regex = {
                    pattern: entry.regex.pattern,
                    flags: entry.regex.flags
                };
            }
            if (extra.range) {
                token.range = entry.range;
            }
            if (extra.loc) {
                token.loc = entry.loc;
            }
            tokens.push(token);
        }

        extra.tokens = tokens;
    }

    function patch() {
        if (typeof extra.tokens !== 'undefined') {
            extra.advance = advance;
            extra.scanRegExp = scanRegExp;

            advance = collectToken;
            scanRegExp = collectRegex;
        }
    }

    function unpatch() {
        if (typeof extra.scanRegExp === 'function') {
            advance = extra.advance;
            scanRegExp = extra.scanRegExp;
        }
    }

    // This is used to modify the delegate.

    function extend(object, properties) {
        var entry, result = {};

        for (entry in object) {
            /* istanbul ignore else */
            if (object.hasOwnProperty(entry)) {
                result[entry] = object[entry];
            }
        }

        for (entry in properties) {
            /* istanbul ignore else */
            if (properties.hasOwnProperty(entry)) {
                result[entry] = properties[entry];
            }
        }

        return result;
    }

    function tokenize(code, options) {
        var toString,
            token,
            tokens;

        toString = String;
        if (typeof code !== 'string' && !(code instanceof String)) {
            code = toString(code);
        }

        delegate = SyntaxTreeDelegate;
        source = code;
        index = 0;
        lineNumber = (source.length > 0) ? 1 : 0;
        lineStart = 0;
        length = source.length;
        lookahead = null;
        state = {
            allowKeyword: true,
            allowIn: true,
            labelSet: new StringMap(),
            inFunctionBody: false,
            inIteration: false,
            inSwitch: false,
            lastCommentStart: -1,
            curlyStack: [],
            curlyLastIndex: 0
        };

        extra = {};

        // Options matching.
        options = options || {};

        // Of course we collect tokens here.
        options.tokens = true;
        extra.tokens = [];
        extra.tokenize = true;
        // The following two fields are necessary to compute the Regex tokens.
        extra.openParenToken = -1;
        extra.openCurlyToken = -1;

        extra.range = (typeof options.range === 'boolean') && options.range;
        extra.loc = (typeof options.loc === 'boolean') && options.loc;

        if (typeof options.comment === 'boolean' && options.comment) {
            extra.comments = [];
        }
        if (typeof options.tolerant === 'boolean' && options.tolerant) {
            extra.errors = [];
        }

        patch();

        try {
            peek();
            if (lookahead.type === Token.EOF) {
                return extra.tokens;
            }

            token = lex();
            while (lookahead.type !== Token.EOF) {
                try {
                    token = lex();
                } catch (lexError) {
                    token = lookahead;
                    if (extra.errors) {
                        extra.errors.push(lexError);
                        // We have to break on the first error
                        // to avoid infinite loops.
                        break;
                    } else {
                        throw lexError;
                    }
                }
            }

            filterTokenLocation();
            tokens = extra.tokens;
            if (typeof extra.comments !== 'undefined') {
                tokens.comments = extra.comments;
            }
            if (typeof extra.errors !== 'undefined') {
                tokens.errors = extra.errors;
            }
        } catch (e) {
            throw e;
        } finally {
            unpatch();
            extra = {};
        }
        return tokens;
    }

    function parse(code, options) {
        var program, toString;

        toString = String;
        if (typeof code !== 'string' && !(code instanceof String)) {
            code = toString(code);
        }

        delegate = SyntaxTreeDelegate;
        source = code;
        index = 0;
        lineNumber = (source.length > 0) ? 1 : 0;
        lineStart = 0;
        length = source.length;
        lookahead = null;
        state = {
            allowKeyword: false,
            allowIn: true,
            labelSet: new StringMap(),
            parenthesizedCount: 0,
            inFunctionBody: false,
            inIteration: false,
            inSwitch: false,
            inJSXChild: false,
            inJSXTag: false,
            inType: false,
            lastCommentStart: -1,
            yieldAllowed: false,
            awaitAllowed: false,
            curlyPosition: 0,
            curlyStack: [],
            curlyLastIndex: 0
        };

        extra = {};
        if (typeof options !== 'undefined') {
            extra.range = (typeof options.range === 'boolean') && options.range;
            extra.loc = (typeof options.loc === 'boolean') && options.loc;
            extra.attachComment = (typeof options.attachComment === 'boolean') && options.attachComment;

            if (extra.loc && options.source !== null && options.source !== undefined) {
                delegate = extend(delegate, {
                    'postProcess': function (node) {
                        node.loc.source = toString(options.source);
                        return node;
                    }
                });
            }

            extra.sourceType = options.sourceType;
            if (typeof options.tokens === 'boolean' && options.tokens) {
                extra.tokens = [];
            }
            if (typeof options.comment === 'boolean' && options.comment) {
                extra.comments = [];
            }
            if (typeof options.tolerant === 'boolean' && options.tolerant) {
                extra.errors = [];
            }
            if (extra.attachComment) {
                extra.range = true;
                extra.comments = [];
                extra.bottomRightStack = [];
                extra.trailingComments = [];
                extra.leadingComments = [];
            }
        }

        patch();
        try {
            program = parseProgram();
            if (typeof extra.comments !== 'undefined') {
                program.comments = extra.comments;
            }
            if (typeof extra.tokens !== 'undefined') {
                filterTokenLocation();
                program.tokens = extra.tokens;
            }
            if (typeof extra.errors !== 'undefined') {
                program.errors = extra.errors;
            }
        } catch (e) {
            throw e;
        } finally {
            unpatch();
            extra = {};
        }

        return program;
    }

    // Sync with *.json manifests.
    exports.version = '14001.1.0-dev-harmony-fb';

    exports.tokenize = tokenize;

    exports.parse = parse;

    // Deep copy.
   /* istanbul ignore next */
    exports.Syntax = (function () {
        var name, types = {};

        if (typeof Object.create === 'function') {
            types = Object.create(null);
        }

        for (name in Syntax) {
            if (Syntax.hasOwnProperty(name)) {
                types[name] = Syntax[name];
            }
        }

        if (typeof Object.freeze === 'function') {
            Object.freeze(types);
        }

        return types;
    }());

}));
/* vim: set sw=4 ts=4 et tw=80 : */

},{}],471:[function(require,module,exports){
(function (process){
var Stream = require('stream')

// through
//
// a stream that does nothing but re-emit the input.
// useful for aggregating a series of changing but not ending streams into one stream)

exports = module.exports = through
through.through = through

//create a readable writable stream.

function through (write, end, opts) {
  write = write || function (data) { this.queue(data) }
  end = end || function () { this.queue(null) }

  var ended = false, destroyed = false, buffer = [], _ended = false
  var stream = new Stream()
  stream.readable = stream.writable = true
  stream.paused = false

//  stream.autoPause   = !(opts && opts.autoPause   === false)
  stream.autoDestroy = !(opts && opts.autoDestroy === false)

  stream.write = function (data) {
    write.call(this, data)
    return !stream.paused
  }

  function drain() {
    while(buffer.length && !stream.paused) {
      var data = buffer.shift()
      if(null === data)
        return stream.emit('end')
      else
        stream.emit('data', data)
    }
  }

  stream.queue = stream.push = function (data) {
//    console.error(ended)
    if(_ended) return stream
    if(data === null) _ended = true
    buffer.push(data)
    drain()
    return stream
  }

  //this will be registered as the first 'end' listener
  //must call destroy next tick, to make sure we're after any
  //stream piped from here.
  //this is only a problem if end is not emitted synchronously.
  //a nicer way to do this is to make sure this is the last listener for 'end'

  stream.on('end', function () {
    stream.readable = false
    if(!stream.writable && stream.autoDestroy)
      process.nextTick(function () {
        stream.destroy()
      })
  })

  function _end () {
    stream.writable = false
    end.call(stream)
    if(!stream.readable && stream.autoDestroy)
      stream.destroy()
  }

  stream.end = function (data) {
    if(ended) return
    ended = true
    if(arguments.length) stream.write(data)
    _end() // will emit or queue
    return stream
  }

  stream.destroy = function () {
    if(destroyed) return
    destroyed = true
    ended = true
    buffer.length = 0
    stream.writable = stream.readable = false
    stream.emit('close')
    return stream
  }

  stream.pause = function () {
    if(stream.paused) return
    stream.paused = true
    return stream
  }

  stream.resume = function () {
    if(stream.paused) {
      stream.paused = false
      stream.emit('resume')
    }
    drain()
    //may have become paused again,
    //as drain emits 'data'.
    if(!stream.paused)
      stream.emit('drain')
    return stream
  }
  return stream
}


}).call(this,require('_process'))
},{"_process":200,"stream":212}],472:[function(require,module,exports){
(function (global){
/**
 * Copyright (c) 2014, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * https://raw.github.com/facebook/regenerator/master/LICENSE file. An
 * additional grant of patent rights can be found in the PATENTS file in
 * the same directory.
 */

!(function(global) {
  "use strict";

  var hasOwn = Object.prototype.hasOwnProperty;
  var undefined; // More compressible than void 0.
  var iteratorSymbol =
    typeof Symbol === "function" && Symbol.iterator || "@@iterator";

  var inModule = typeof module === "object";
  var runtime = global.regeneratorRuntime;
  if (runtime) {
    if (inModule) {
      // If regeneratorRuntime is defined globally and we're in a module,
      // make the exports object identical to regeneratorRuntime.
      module.exports = runtime;
    }
    // Don't bother evaluating the rest of this file if the runtime was
    // already defined globally.
    return;
  }

  // Define the runtime globally (as expected by generated code) as either
  // module.exports (if we're in a module) or a new, empty object.
  runtime = global.regeneratorRuntime = inModule ? module.exports : {};

  function wrap(innerFn, outerFn, self, tryLocsList) {
    // If outerFn provided, then outerFn.prototype instanceof Generator.
    var generator = Object.create((outerFn || Generator).prototype);

    generator._invoke = makeInvokeMethod(
      innerFn, self || null,
      new Context(tryLocsList || [])
    );

    return generator;
  }
  runtime.wrap = wrap;

  // Try/catch helper to minimize deoptimizations. Returns a completion
  // record like context.tryEntries[i].completion. This interface could
  // have been (and was previously) designed to take a closure to be
  // invoked without arguments, but in all the cases we care about we
  // already have an existing method we want to call, so there's no need
  // to create a new function object. We can even get away with assuming
  // the method takes exactly one argument, since that happens to be true
  // in every case, so we don't have to touch the arguments object. The
  // only additional allocation required is the completion record, which
  // has a stable shape and so hopefully should be cheap to allocate.
  function tryCatch(fn, obj, arg) {
    try {
      return { type: "normal", arg: fn.call(obj, arg) };
    } catch (err) {
      return { type: "throw", arg: err };
    }
  }

  var GenStateSuspendedStart = "suspendedStart";
  var GenStateSuspendedYield = "suspendedYield";
  var GenStateExecuting = "executing";
  var GenStateCompleted = "completed";

  // Returning this object from the innerFn has the same effect as
  // breaking out of the dispatch switch statement.
  var ContinueSentinel = {};

  // Dummy constructor functions that we use as the .constructor and
  // .constructor.prototype properties for functions that return Generator
  // objects. For full spec compliance, you may wish to configure your
  // minifier not to mangle the names of these two functions.
  function Generator() {}
  function GeneratorFunction() {}
  function GeneratorFunctionPrototype() {}

  var Gp = GeneratorFunctionPrototype.prototype = Generator.prototype;
  GeneratorFunction.prototype = Gp.constructor = GeneratorFunctionPrototype;
  GeneratorFunctionPrototype.constructor = GeneratorFunction;
  GeneratorFunction.displayName = "GeneratorFunction";

  runtime.isGeneratorFunction = function(genFun) {
    var ctor = typeof genFun === "function" && genFun.constructor;
    return ctor
      ? ctor === GeneratorFunction ||
        // For the native GeneratorFunction constructor, the best we can
        // do is to check its .name property.
        (ctor.displayName || ctor.name) === "GeneratorFunction"
      : false;
  };

  runtime.mark = function(genFun) {
    genFun.__proto__ = GeneratorFunctionPrototype;
    genFun.prototype = Object.create(Gp);
    return genFun;
  };

  runtime.async = function(innerFn, outerFn, self, tryLocsList) {
    return new Promise(function(resolve, reject) {
      var generator = wrap(innerFn, outerFn, self, tryLocsList);
      var callNext = step.bind(generator, "next");
      var callThrow = step.bind(generator, "throw");

      function step(method, arg) {
        var record = tryCatch(generator[method], generator, arg);
        if (record.type === "throw") {
          reject(record.arg);
          return;
        }

        var info = record.arg;
        if (info.done) {
          resolve(info.value);
        } else {
          Promise.resolve(info.value).then(callNext, callThrow);
        }
      }

      callNext();
    });
  };

  function makeInvokeMethod(innerFn, self, context) {
    var state = GenStateSuspendedStart;

    return function invoke(method, arg) {
      if (state === GenStateExecuting) {
        throw new Error("Generator is already running");
      }

      if (state === GenStateCompleted) {
        // Be forgiving, per 25.3.3.3.3 of the spec:
        // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-generatorresume
        return doneResult();
      }

      while (true) {
        var delegate = context.delegate;
        if (delegate) {
          if (method === "return" ||
              (method === "throw" && delegate.iterator[method] === undefined)) {
            // A return or throw (when the delegate iterator has no throw
            // method) always terminates the yield* loop.
            context.delegate = null;

            // If the delegate iterator has a return method, give it a
            // chance to clean up.
            var returnMethod = delegate.iterator["return"];
            if (returnMethod) {
              var record = tryCatch(returnMethod, delegate.iterator, arg);
              if (record.type === "throw") {
                // If the return method threw an exception, let that
                // exception prevail over the original return or throw.
                method = "throw";
                arg = record.arg;
                continue;
              }
            }

            if (method === "return") {
              // Continue with the outer return, now that the delegate
              // iterator has been terminated.
              continue;
            }
          }

          var record = tryCatch(
            delegate.iterator[method],
            delegate.iterator,
            arg
          );

          if (record.type === "throw") {
            context.delegate = null;

            // Like returning generator.throw(uncaught), but without the
            // overhead of an extra function call.
            method = "throw";
            arg = record.arg;
            continue;
          }

          // Delegate generator ran and handled its own exceptions so
          // regardless of what the method was, we continue as if it is
          // "next" with an undefined arg.
          method = "next";
          arg = undefined;

          var info = record.arg;
          if (info.done) {
            context[delegate.resultName] = info.value;
            context.next = delegate.nextLoc;
          } else {
            state = GenStateSuspendedYield;
            return info;
          }

          context.delegate = null;
        }

        if (method === "next") {
          if (state === GenStateSuspendedYield) {
            context.sent = arg;
          } else {
            delete context.sent;
          }

        } else if (method === "throw") {
          if (state === GenStateSuspendedStart) {
            state = GenStateCompleted;
            throw arg;
          }

          if (context.dispatchException(arg)) {
            // If the dispatched exception was caught by a catch block,
            // then let that catch block handle the exception normally.
            method = "next";
            arg = undefined;
          }

        } else if (method === "return") {
          context.abrupt("return", arg);
        }

        state = GenStateExecuting;

        var record = tryCatch(innerFn, self, context);
        if (record.type === "normal") {
          // If an exception is thrown from innerFn, we leave state ===
          // GenStateExecuting and loop back for another invocation.
          state = context.done
            ? GenStateCompleted
            : GenStateSuspendedYield;

          var info = {
            value: record.arg,
            done: context.done
          };

          if (record.arg === ContinueSentinel) {
            if (context.delegate && method === "next") {
              // Deliberately forget the last sent value so that we don't
              // accidentally pass it on to the delegate.
              arg = undefined;
            }
          } else {
            return info;
          }

        } else if (record.type === "throw") {
          state = GenStateCompleted;
          // Dispatch the exception by looping back around to the
          // context.dispatchException(arg) call above.
          method = "throw";
          arg = record.arg;
        }
      }
    };
  }

  function defineGeneratorMethod(method) {
    Gp[method] = function(arg) {
      return this._invoke(method, arg);
    };
  }
  defineGeneratorMethod("next");
  defineGeneratorMethod("throw");
  defineGeneratorMethod("return");

  Gp[iteratorSymbol] = function() {
    return this;
  };

  Gp.toString = function() {
    return "[object Generator]";
  };

  function pushTryEntry(locs) {
    var entry = { tryLoc: locs[0] };

    if (1 in locs) {
      entry.catchLoc = locs[1];
    }

    if (2 in locs) {
      entry.finallyLoc = locs[2];
      entry.afterLoc = locs[3];
    }

    this.tryEntries.push(entry);
  }

  function resetTryEntry(entry) {
    var record = entry.completion || {};
    record.type = "normal";
    delete record.arg;
    entry.completion = record;
  }

  function Context(tryLocsList) {
    // The root entry object (effectively a try statement without a catch
    // or a finally block) gives us a place to store values thrown from
    // locations where there is no enclosing try statement.
    this.tryEntries = [{ tryLoc: "root" }];
    tryLocsList.forEach(pushTryEntry, this);
    this.reset();
  }

  runtime.keys = function(object) {
    var keys = [];
    for (var key in object) {
      keys.push(key);
    }
    keys.reverse();

    // Rather than returning an object with a next method, we keep
    // things simple and return the next function itself.
    return function next() {
      while (keys.length) {
        var key = keys.pop();
        if (key in object) {
          next.value = key;
          next.done = false;
          return next;
        }
      }

      // To avoid creating an additional object, we just hang the .value
      // and .done properties off the next function object itself. This
      // also ensures that the minifier will not anonymize the function.
      next.done = true;
      return next;
    };
  };

  function values(iterable) {
    if (iterable) {
      var iteratorMethod = iterable[iteratorSymbol];
      if (iteratorMethod) {
        return iteratorMethod.call(iterable);
      }

      if (typeof iterable.next === "function") {
        return iterable;
      }

      if (!isNaN(iterable.length)) {
        var i = -1, next = function next() {
          while (++i < iterable.length) {
            if (hasOwn.call(iterable, i)) {
              next.value = iterable[i];
              next.done = false;
              return next;
            }
          }

          next.value = undefined;
          next.done = true;

          return next;
        };

        return next.next = next;
      }
    }

    // Return an iterator with no values.
    return { next: doneResult };
  }
  runtime.values = values;

  function doneResult() {
    return { value: undefined, done: true };
  }

  Context.prototype = {
    constructor: Context,

    reset: function() {
      this.prev = 0;
      this.next = 0;
      this.sent = undefined;
      this.done = false;
      this.delegate = null;

      this.tryEntries.forEach(resetTryEntry);

      // Pre-initialize at least 20 temporary variables to enable hidden
      // class optimizations for simple generators.
      for (var tempIndex = 0, tempName;
           hasOwn.call(this, tempName = "t" + tempIndex) || tempIndex < 20;
           ++tempIndex) {
        this[tempName] = null;
      }
    },

    stop: function() {
      this.done = true;

      var rootEntry = this.tryEntries[0];
      var rootRecord = rootEntry.completion;
      if (rootRecord.type === "throw") {
        throw rootRecord.arg;
      }

      return this.rval;
    },

    dispatchException: function(exception) {
      if (this.done) {
        throw exception;
      }

      var context = this;
      function handle(loc, caught) {
        record.type = "throw";
        record.arg = exception;
        context.next = loc;
        return !!caught;
      }

      for (var i = this.tryEntries.length - 1; i >= 0; --i) {
        var entry = this.tryEntries[i];
        var record = entry.completion;

        if (entry.tryLoc === "root") {
          // Exception thrown outside of any try block that could handle
          // it, so set the completion value of the entire function to
          // throw the exception.
          return handle("end");
        }

        if (entry.tryLoc <= this.prev) {
          var hasCatch = hasOwn.call(entry, "catchLoc");
          var hasFinally = hasOwn.call(entry, "finallyLoc");

          if (hasCatch && hasFinally) {
            if (this.prev < entry.catchLoc) {
              return handle(entry.catchLoc, true);
            } else if (this.prev < entry.finallyLoc) {
              return handle(entry.finallyLoc);
            }

          } else if (hasCatch) {
            if (this.prev < entry.catchLoc) {
              return handle(entry.catchLoc, true);
            }

          } else if (hasFinally) {
            if (this.prev < entry.finallyLoc) {
              return handle(entry.finallyLoc);
            }

          } else {
            throw new Error("try statement without catch or finally");
          }
        }
      }
    },

    abrupt: function(type, arg) {
      for (var i = this.tryEntries.length - 1; i >= 0; --i) {
        var entry = this.tryEntries[i];
        if (entry.tryLoc <= this.prev &&
            hasOwn.call(entry, "finallyLoc") &&
            this.prev < entry.finallyLoc) {
          var finallyEntry = entry;
          break;
        }
      }

      if (finallyEntry &&
          (type === "break" ||
           type === "continue") &&
          finallyEntry.tryLoc <= arg &&
          arg <= finallyEntry.finallyLoc) {
        // Ignore the finally entry if control is not jumping to a
        // location outside the try/catch block.
        finallyEntry = null;
      }

      var record = finallyEntry ? finallyEntry.completion : {};
      record.type = type;
      record.arg = arg;

      if (finallyEntry) {
        this.next = finallyEntry.finallyLoc;
      } else {
        this.complete(record);
      }

      return ContinueSentinel;
    },

    complete: function(record, afterLoc) {
      if (record.type === "throw") {
        throw record.arg;
      }

      if (record.type === "break" ||
          record.type === "continue") {
        this.next = record.arg;
      } else if (record.type === "return") {
        this.rval = record.arg;
        this.next = "end";
      } else if (record.type === "normal" && afterLoc) {
        this.next = afterLoc;
      }

      return ContinueSentinel;
    },

    finish: function(finallyLoc) {
      for (var i = this.tryEntries.length - 1; i >= 0; --i) {
        var entry = this.tryEntries[i];
        if (entry.finallyLoc === finallyLoc) {
          return this.complete(entry.completion, entry.afterLoc);
        }
      }
    },

    "catch": function(tryLoc) {
      for (var i = this.tryEntries.length - 1; i >= 0; --i) {
        var entry = this.tryEntries[i];
        if (entry.tryLoc === tryLoc) {
          var record = entry.completion;
          if (record.type === "throw") {
            var thrown = record.arg;
            resetTryEntry(entry);
          }
          return thrown;
        }
      }

      // The context.catch method must only be called with a location
      // argument that corresponds to a known catch block.
      throw new Error("illegal catch attempt");
    },

    delegateYield: function(iterable, resultName, nextLoc) {
      this.delegate = {
        iterator: values(iterable),
        resultName: resultName,
        nextLoc: nextLoc
      };

      return ContinueSentinel;
    }
  };
})(
  // Among the various tricks for obtaining a reference to the global
  // object, this seems to be the most reliable technique that does not
  // use indirect eval (which violates Content Security Policy).
  typeof global === "object" ? global :
  typeof window === "object" ? window :
  typeof self === "object" ? self : this
);

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],473:[function(require,module,exports){
// Generated by `/scripts/character-class-escape-sets.js`. Do not edit.
var regenerate = require('regenerate');

exports.REGULAR = {
	'd': regenerate()
		.addRange(0x30, 0x39),
	'D': regenerate()
		.addRange(0x0, 0x2F)
		.addRange(0x3A, 0xFFFF),
	's': regenerate(0x20, 0xA0, 0x1680, 0x180E, 0x202F, 0x205F, 0x3000, 0xFEFF)
		.addRange(0x9, 0xD)
		.addRange(0x2000, 0x200A)
		.addRange(0x2028, 0x2029),
	'S': regenerate()
		.addRange(0x0, 0x8)
		.addRange(0xE, 0x1F)
		.addRange(0x21, 0x9F)
		.addRange(0xA1, 0x167F)
		.addRange(0x1681, 0x180D)
		.addRange(0x180F, 0x1FFF)
		.addRange(0x200B, 0x2027)
		.addRange(0x202A, 0x202E)
		.addRange(0x2030, 0x205E)
		.addRange(0x2060, 0x2FFF)
		.addRange(0x3001, 0xFEFE)
		.addRange(0xFF00, 0xFFFF),
	'w': regenerate(0x5F)
		.addRange(0x30, 0x39)
		.addRange(0x41, 0x5A)
		.addRange(0x61, 0x7A),
	'W': regenerate(0x60)
		.addRange(0x0, 0x2F)
		.addRange(0x3A, 0x40)
		.addRange(0x5B, 0x5E)
		.addRange(0x7B, 0xFFFF)
};

exports.UNICODE = {
	'd': regenerate()
		.addRange(0x30, 0x39),
	'D': regenerate()
		.addRange(0x0, 0x2F)
		.addRange(0x3A, 0x10FFFF),
	's': regenerate(0x20, 0xA0, 0x1680, 0x180E, 0x202F, 0x205F, 0x3000, 0xFEFF)
		.addRange(0x9, 0xD)
		.addRange(0x2000, 0x200A)
		.addRange(0x2028, 0x2029),
	'S': regenerate()
		.addRange(0x0, 0x8)
		.addRange(0xE, 0x1F)
		.addRange(0x21, 0x9F)
		.addRange(0xA1, 0x167F)
		.addRange(0x1681, 0x180D)
		.addRange(0x180F, 0x1FFF)
		.addRange(0x200B, 0x2027)
		.addRange(0x202A, 0x202E)
		.addRange(0x2030, 0x205E)
		.addRange(0x2060, 0x2FFF)
		.addRange(0x3001, 0xFEFE)
		.addRange(0xFF00, 0x10FFFF),
	'w': regenerate(0x5F)
		.addRange(0x30, 0x39)
		.addRange(0x41, 0x5A)
		.addRange(0x61, 0x7A),
	'W': regenerate(0x60)
		.addRange(0x0, 0x2F)
		.addRange(0x3A, 0x40)
		.addRange(0x5B, 0x5E)
		.addRange(0x7B, 0x10FFFF)
};

exports.UNICODE_IGNORE_CASE = {
	'd': regenerate()
		.addRange(0x30, 0x39),
	'D': regenerate()
		.addRange(0x0, 0x2F)
		.addRange(0x3A, 0x10FFFF),
	's': regenerate(0x20, 0xA0, 0x1680, 0x180E, 0x202F, 0x205F, 0x3000, 0xFEFF)
		.addRange(0x9, 0xD)
		.addRange(0x2000, 0x200A)
		.addRange(0x2028, 0x2029),
	'S': regenerate()
		.addRange(0x0, 0x8)
		.addRange(0xE, 0x1F)
		.addRange(0x21, 0x9F)
		.addRange(0xA1, 0x167F)
		.addRange(0x1681, 0x180D)
		.addRange(0x180F, 0x1FFF)
		.addRange(0x200B, 0x2027)
		.addRange(0x202A, 0x202E)
		.addRange(0x2030, 0x205E)
		.addRange(0x2060, 0x2FFF)
		.addRange(0x3001, 0xFEFE)
		.addRange(0xFF00, 0x10FFFF),
	'w': regenerate(0x5F, 0x17F, 0x212A)
		.addRange(0x30, 0x39)
		.addRange(0x41, 0x5A)
		.addRange(0x61, 0x7A),
	'W': regenerate(0x4B, 0x53, 0x60)
		.addRange(0x0, 0x2F)
		.addRange(0x3A, 0x40)
		.addRange(0x5B, 0x5E)
		.addRange(0x7B, 0x10FFFF)
};

},{"regenerate":475}],474:[function(require,module,exports){
module.exports={
	"75": 8490,
	"83": 383,
	"107": 8490,
	"115": 383,
	"181": 924,
	"197": 8491,
	"383": 83,
	"452": 453,
	"453": 452,
	"455": 456,
	"456": 455,
	"458": 459,
	"459": 458,
	"497": 498,
	"498": 497,
	"837": 8126,
	"914": 976,
	"917": 1013,
	"920": 1012,
	"921": 8126,
	"922": 1008,
	"924": 181,
	"928": 982,
	"929": 1009,
	"931": 962,
	"934": 981,
	"937": 8486,
	"962": 931,
	"976": 914,
	"977": 1012,
	"981": 934,
	"982": 928,
	"1008": 922,
	"1009": 929,
	"1012": [
		920,
		977
	],
	"1013": 917,
	"7776": 7835,
	"7835": 7776,
	"8126": [
		837,
		921
	],
	"8486": 937,
	"8490": 75,
	"8491": 197,
	"66560": 66600,
	"66561": 66601,
	"66562": 66602,
	"66563": 66603,
	"66564": 66604,
	"66565": 66605,
	"66566": 66606,
	"66567": 66607,
	"66568": 66608,
	"66569": 66609,
	"66570": 66610,
	"66571": 66611,
	"66572": 66612,
	"66573": 66613,
	"66574": 66614,
	"66575": 66615,
	"66576": 66616,
	"66577": 66617,
	"66578": 66618,
	"66579": 66619,
	"66580": 66620,
	"66581": 66621,
	"66582": 66622,
	"66583": 66623,
	"66584": 66624,
	"66585": 66625,
	"66586": 66626,
	"66587": 66627,
	"66588": 66628,
	"66589": 66629,
	"66590": 66630,
	"66591": 66631,
	"66592": 66632,
	"66593": 66633,
	"66594": 66634,
	"66595": 66635,
	"66596": 66636,
	"66597": 66637,
	"66598": 66638,
	"66599": 66639,
	"66600": 66560,
	"66601": 66561,
	"66602": 66562,
	"66603": 66563,
	"66604": 66564,
	"66605": 66565,
	"66606": 66566,
	"66607": 66567,
	"66608": 66568,
	"66609": 66569,
	"66610": 66570,
	"66611": 66571,
	"66612": 66572,
	"66613": 66573,
	"66614": 66574,
	"66615": 66575,
	"66616": 66576,
	"66617": 66577,
	"66618": 66578,
	"66619": 66579,
	"66620": 66580,
	"66621": 66581,
	"66622": 66582,
	"66623": 66583,
	"66624": 66584,
	"66625": 66585,
	"66626": 66586,
	"66627": 66587,
	"66628": 66588,
	"66629": 66589,
	"66630": 66590,
	"66631": 66591,
	"66632": 66592,
	"66633": 66593,
	"66634": 66594,
	"66635": 66595,
	"66636": 66596,
	"66637": 66597,
	"66638": 66598,
	"66639": 66599,
	"71840": 71872,
	"71841": 71873,
	"71842": 71874,
	"71843": 71875,
	"71844": 71876,
	"71845": 71877,
	"71846": 71878,
	"71847": 71879,
	"71848": 71880,
	"71849": 71881,
	"71850": 71882,
	"71851": 71883,
	"71852": 71884,
	"71853": 71885,
	"71854": 71886,
	"71855": 71887,
	"71856": 71888,
	"71857": 71889,
	"71858": 71890,
	"71859": 71891,
	"71860": 71892,
	"71861": 71893,
	"71862": 71894,
	"71863": 71895,
	"71864": 71896,
	"71865": 71897,
	"71866": 71898,
	"71867": 71899,
	"71868": 71900,
	"71869": 71901,
	"71870": 71902,
	"71871": 71903,
	"71872": 71840,
	"71873": 71841,
	"71874": 71842,
	"71875": 71843,
	"71876": 71844,
	"71877": 71845,
	"71878": 71846,
	"71879": 71847,
	"71880": 71848,
	"71881": 71849,
	"71882": 71850,
	"71883": 71851,
	"71884": 71852,
	"71885": 71853,
	"71886": 71854,
	"71887": 71855,
	"71888": 71856,
	"71889": 71857,
	"71890": 71858,
	"71891": 71859,
	"71892": 71860,
	"71893": 71861,
	"71894": 71862,
	"71895": 71863,
	"71896": 71864,
	"71897": 71865,
	"71898": 71866,
	"71899": 71867,
	"71900": 71868,
	"71901": 71869,
	"71902": 71870,
	"71903": 71871
}

},{}],475:[function(require,module,exports){
(function (global){
/*! https://mths.be/regenerate v1.2.0 by @mathias | MIT license */
;(function(root) {

	// Detect free variables `exports`.
	var freeExports = typeof exports == 'object' && exports;

	// Detect free variable `module`.
	var freeModule = typeof module == 'object' && module &&
		module.exports == freeExports && module;

	// Detect free variable `global`, from Node.js or Browserified code,
	// and use it as `root`.
	var freeGlobal = typeof global == 'object' && global;
	if (freeGlobal.global === freeGlobal || freeGlobal.window === freeGlobal) {
		root = freeGlobal;
	}

	/*--------------------------------------------------------------------------*/

	var ERRORS = {
		'rangeOrder': 'A range\u2019s `stop` value must be greater than or equal ' +
			'to the `start` value.',
		'codePointRange': 'Invalid code point value. Code points range from ' +
			'U+000000 to U+10FFFF.'
	};

	// https://mathiasbynens.be/notes/javascript-encoding#surrogate-pairs
	var HIGH_SURROGATE_MIN = 0xD800;
	var HIGH_SURROGATE_MAX = 0xDBFF;
	var LOW_SURROGATE_MIN = 0xDC00;
	var LOW_SURROGATE_MAX = 0xDFFF;

	// In Regenerate output, `\0` will never be preceded by `\` because we sort
	// by code point value, so let’s keep this regular expression simple.
	var regexNull = /\\x00([^0123456789]|$)/g;

	var object = {};
	var hasOwnProperty = object.hasOwnProperty;
	var extend = function(destination, source) {
		var key;
		for (key in source) {
			if (hasOwnProperty.call(source, key)) {
				destination[key] = source[key];
			}
		}
		return destination;
	};

	var forEach = function(array, callback) {
		var index = -1;
		var length = array.length;
		while (++index < length) {
			callback(array[index], index);
		}
	};

	var toString = object.toString;
	var isArray = function(value) {
		return toString.call(value) == '[object Array]';
	};
	var isNumber = function(value) {
		return typeof value == 'number' ||
			toString.call(value) == '[object Number]';
	};

	// This assumes that `number` is a positive integer that `toString()`s nicely
	// (which is the case for all code point values).
	var zeroes = '0000';
	var pad = function(number, totalCharacters) {
		var string = String(number);
		return string.length < totalCharacters
			? (zeroes + string).slice(-totalCharacters)
			: string;
	};

	var hex = function(number) {
		return Number(number).toString(16).toUpperCase();
	};

	var slice = [].slice;

	/*--------------------------------------------------------------------------*/

	var dataFromCodePoints = function(codePoints) {
		var index = -1;
		var length = codePoints.length;
		var max = length - 1;
		var result = [];
		var isStart = true;
		var tmp;
		var previous = 0;
		while (++index < length) {
			tmp = codePoints[index];
			if (isStart) {
				result.push(tmp);
				previous = tmp;
				isStart = false;
			} else {
				if (tmp == previous + 1) {
					if (index != max) {
						previous = tmp;
						continue;
					} else {
						isStart = true;
						result.push(tmp + 1);
					}
				} else {
					// End the previous range and start a new one.
					result.push(previous + 1, tmp);
					previous = tmp;
				}
			}
		}
		if (!isStart) {
			result.push(tmp + 1);
		}
		return result;
	};

	var dataRemove = function(data, codePoint) {
		// Iterate over the data per `(start, end)` pair.
		var index = 0;
		var start;
		var end;
		var length = data.length;
		while (index < length) {
			start = data[index];
			end = data[index + 1];
			if (codePoint >= start && codePoint < end) {
				// Modify this pair.
				if (codePoint == start) {
					if (end == start + 1) {
						// Just remove `start` and `end`.
						data.splice(index, 2);
						return data;
					} else {
						// Just replace `start` with a new value.
						data[index] = codePoint + 1;
						return data;
					}
				} else if (codePoint == end - 1) {
					// Just replace `end` with a new value.
					data[index + 1] = codePoint;
					return data;
				} else {
					// Replace `[start, end]` with `[startA, endA, startB, endB]`.
					data.splice(index, 2, start, codePoint, codePoint + 1, end);
					return data;
				}
			}
			index += 2;
		}
		return data;
	};

	var dataRemoveRange = function(data, rangeStart, rangeEnd) {
		if (rangeEnd < rangeStart) {
			throw Error(ERRORS.rangeOrder);
		}
		// Iterate over the data per `(start, end)` pair.
		var index = 0;
		var start;
		var end;
		while (index < data.length) {
			start = data[index];
			end = data[index + 1] - 1; // Note: the `- 1` makes `end` inclusive.

			// Exit as soon as no more matching pairs can be found.
			if (start > rangeEnd) {
				return data;
			}

			// Check if this range pair is equal to, or forms a subset of, the range
			// to be removed.
			// E.g. we have `[0, 11, 40, 51]` and want to remove 0-10 → `[40, 51]`.
			// E.g. we have `[40, 51]` and want to remove 0-100 → `[]`.
			if (rangeStart <= start && rangeEnd >= end) {
				// Remove this pair.
				data.splice(index, 2);
				continue;
			}

			// Check if both `rangeStart` and `rangeEnd` are within the bounds of
			// this pair.
			// E.g. we have `[0, 11]` and want to remove 4-6 → `[0, 4, 7, 11]`.
			if (rangeStart >= start && rangeEnd < end) {
				if (rangeStart == start) {
					// Replace `[start, end]` with `[startB, endB]`.
					data[index] = rangeEnd + 1;
					data[index + 1] = end + 1;
					return data;
				}
				// Replace `[start, end]` with `[startA, endA, startB, endB]`.
				data.splice(index, 2, start, rangeStart, rangeEnd + 1, end + 1);
				return data;
			}

			// Check if only `rangeStart` is within the bounds of this pair.
			// E.g. we have `[0, 11]` and want to remove 4-20 → `[0, 4]`.
			if (rangeStart >= start && rangeStart <= end) {
				// Replace `end` with `rangeStart`.
				data[index + 1] = rangeStart;
				// Note: we cannot `return` just yet, in case any following pairs still
				// contain matching code points.
				// E.g. we have `[0, 11, 14, 31]` and want to remove 4-20
				// → `[0, 4, 21, 31]`.
			}

			// Check if only `rangeEnd` is within the bounds of this pair.
			// E.g. we have `[14, 31]` and want to remove 4-20 → `[21, 31]`.
			else if (rangeEnd >= start && rangeEnd <= end) {
				// Just replace `start`.
				data[index] = rangeEnd + 1;
				return data;
			}

			index += 2;
		}
		return data;
	};

	 var dataAdd = function(data, codePoint) {
		// Iterate over the data per `(start, end)` pair.
		var index = 0;
		var start;
		var end;
		var lastIndex = null;
		var length = data.length;
		if (codePoint < 0x0 || codePoint > 0x10FFFF) {
			throw RangeError(ERRORS.codePointRange);
		}
		while (index < length) {
			start = data[index];
			end = data[index + 1];

			// Check if the code point is already in the set.
			if (codePoint >= start && codePoint < end) {
				return data;
			}

			if (codePoint == start - 1) {
				// Just replace `start` with a new value.
				data[index] = codePoint;
				return data;
			}

			// At this point, if `start` is `greater` than `codePoint`, insert a new
			// `[start, end]` pair before the current pair, or after the current pair
			// if there is a known `lastIndex`.
			if (start > codePoint) {
				data.splice(
					lastIndex != null ? lastIndex + 2 : 0,
					0,
					codePoint,
					codePoint + 1
				);
				return data;
			}

			if (codePoint == end) {
				// Check if adding this code point causes two separate ranges to become
				// a single range, e.g. `dataAdd([0, 4, 5, 10], 4)` → `[0, 10]`.
				if (codePoint + 1 == data[index + 2]) {
					data.splice(index, 4, start, data[index + 3]);
					return data;
				}
				// Else, just replace `end` with a new value.
				data[index + 1] = codePoint + 1;
				return data;
			}
			lastIndex = index;
			index += 2;
		}
		// The loop has finished; add the new pair to the end of the data set.
		data.push(codePoint, codePoint + 1);
		return data;
	};

	var dataAddData = function(dataA, dataB) {
		// Iterate over the data per `(start, end)` pair.
		var index = 0;
		var start;
		var end;
		var data = dataA.slice();
		var length = dataB.length;
		while (index < length) {
			start = dataB[index];
			end = dataB[index + 1] - 1;
			if (start == end) {
				data = dataAdd(data, start);
			} else {
				data = dataAddRange(data, start, end);
			}
			index += 2;
		}
		return data;
	};

	var dataRemoveData = function(dataA, dataB) {
		// Iterate over the data per `(start, end)` pair.
		var index = 0;
		var start;
		var end;
		var data = dataA.slice();
		var length = dataB.length;
		while (index < length) {
			start = dataB[index];
			end = dataB[index + 1] - 1;
			if (start == end) {
				data = dataRemove(data, start);
			} else {
				data = dataRemoveRange(data, start, end);
			}
			index += 2;
		}
		return data;
	};

	var dataAddRange = function(data, rangeStart, rangeEnd) {
		if (rangeEnd < rangeStart) {
			throw Error(ERRORS.rangeOrder);
		}
		if (
			rangeStart < 0x0 || rangeStart > 0x10FFFF ||
			rangeEnd < 0x0 || rangeEnd > 0x10FFFF
		) {
			throw RangeError(ERRORS.codePointRange);
		}
		// Iterate over the data per `(start, end)` pair.
		var index = 0;
		var start;
		var end;
		var added = false;
		var length = data.length;
		while (index < length) {
			start = data[index];
			end = data[index + 1];

			if (added) {
				// The range has already been added to the set; at this point, we just
				// need to get rid of the following ranges in case they overlap.

				// Check if this range can be combined with the previous range.
				if (start == rangeEnd + 1) {
					data.splice(index - 1, 2);
					return data;
				}

				// Exit as soon as no more possibly overlapping pairs can be found.
				if (start > rangeEnd) {
					return data;
				}

				// E.g. `[0, 11, 12, 16]` and we’ve added 5-15, so we now have
				// `[0, 16, 12, 16]`. Remove the `12,16` part, as it lies within the
				// `0,16` range that was previously added.
				if (start >= rangeStart && start <= rangeEnd) {
					// `start` lies within the range that was previously added.

					if (end > rangeStart && end - 1 <= rangeEnd) {
						// `end` lies within the range that was previously added as well,
						// so remove this pair.
						data.splice(index, 2);
						index -= 2;
						// Note: we cannot `return` just yet, as there may still be other
						// overlapping pairs.
					} else {
						// `start` lies within the range that was previously added, but
						// `end` doesn’t. E.g. `[0, 11, 12, 31]` and we’ve added 5-15, so
						// now we have `[0, 16, 12, 31]`. This must be written as `[0, 31]`.
						// Remove the previously added `end` and the current `start`.
						data.splice(index - 1, 2);
						index -= 2;
					}

					// Note: we cannot return yet.
				}

			}

			else if (start == rangeEnd + 1) {
				data[index] = rangeStart;
				return data;
			}

			// Check if a new pair must be inserted *before* the current one.
			else if (start > rangeEnd) {
				data.splice(index, 0, rangeStart, rangeEnd + 1);
				return data;
			}

			else if (rangeStart >= start && rangeStart < end && rangeEnd + 1 <= end) {
				// The new range lies entirely within an existing range pair. No action
				// needed.
				return data;
			}

			else if (
				// E.g. `[0, 11]` and you add 5-15 → `[0, 16]`.
				(rangeStart >= start && rangeStart < end) ||
				// E.g. `[0, 3]` and you add 3-6 → `[0, 7]`.
				end == rangeStart
			) {
				// Replace `end` with the new value.
				data[index + 1] = rangeEnd + 1;
				// Make sure the next range pair doesn’t overlap, e.g. `[0, 11, 12, 14]`
				// and you add 5-15 → `[0, 16]`, i.e. remove the `12,14` part.
				added = true;
				// Note: we cannot `return` just yet.
			}

			else if (rangeStart <= start && rangeEnd + 1 >= end) {
				// The new range is a superset of the old range.
				data[index] = rangeStart;
				data[index + 1] = rangeEnd + 1;
				added = true;
			}

			index += 2;
		}
		// The loop has finished without doing anything; add the new pair to the end
		// of the data set.
		if (!added) {
			data.push(rangeStart, rangeEnd + 1);
		}
		return data;
	};

	var dataContains = function(data, codePoint) {
		var index = 0;
		var length = data.length;
		// Exit early if `codePoint` is not within `data`’s overall range.
		var start = data[index];
		var end = data[length - 1];
		if (length >= 2) {
			if (codePoint < start || codePoint > end) {
				return false;
			}
		}
		// Iterate over the data per `(start, end)` pair.
		while (index < length) {
			start = data[index];
			end = data[index + 1];
			if (codePoint >= start && codePoint < end) {
				return true;
			}
			index += 2;
		}
		return false;
	};

	var dataIntersection = function(data, codePoints) {
		var index = 0;
		var length = codePoints.length;
		var codePoint;
		var result = [];
		while (index < length) {
			codePoint = codePoints[index];
			if (dataContains(data, codePoint)) {
				result.push(codePoint);
			}
			++index;
		}
		return dataFromCodePoints(result);
	};

	var dataIsEmpty = function(data) {
		return !data.length;
	};

	var dataIsSingleton = function(data) {
		// Check if the set only represents a single code point.
		return data.length == 2 && data[0] + 1 == data[1];
	};

	var dataToArray = function(data) {
		// Iterate over the data per `(start, end)` pair.
		var index = 0;
		var start;
		var end;
		var result = [];
		var length = data.length;
		while (index < length) {
			start = data[index];
			end = data[index + 1];
			while (start < end) {
				result.push(start);
				++start;
			}
			index += 2;
		}
		return result;
	};

	/*--------------------------------------------------------------------------*/

	// https://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae
	var floor = Math.floor;
	var highSurrogate = function(codePoint) {
		return parseInt(
			floor((codePoint - 0x10000) / 0x400) + HIGH_SURROGATE_MIN,
			10
		);
	};

	var lowSurrogate = function(codePoint) {
		return parseInt(
			(codePoint - 0x10000) % 0x400 + LOW_SURROGATE_MIN,
			10
		);
	};

	var stringFromCharCode = String.fromCharCode;
	var codePointToString = function(codePoint) {
		var string;
		// https://mathiasbynens.be/notes/javascript-escapes#single
		// Note: the `\b` escape sequence for U+0008 BACKSPACE in strings has a
		// different meaning in regular expressions (word boundary), so it cannot
		// be used here.
		if (codePoint == 0x09) {
			string = '\\t';
		}
		// Note: IE < 9 treats `'\v'` as `'v'`, so avoid using it.
		// else if (codePoint == 0x0B) {
		// 	string = '\\v';
		// }
		else if (codePoint == 0x0A) {
			string = '\\n';
		}
		else if (codePoint == 0x0C) {
			string = '\\f';
		}
		else if (codePoint == 0x0D) {
			string = '\\r';
		}
		else if (codePoint == 0x5C) {
			string = '\\\\';
		}
		else if (
			codePoint == 0x24 ||
			(codePoint >= 0x28 && codePoint <= 0x2B) ||
			codePoint == 0x2D || codePoint == 0x2E || codePoint == 0x3F ||
			(codePoint >= 0x5B && codePoint <= 0x5E) ||
			(codePoint >= 0x7B && codePoint <= 0x7D)
		) {
			// The code point maps to an unsafe printable ASCII character;
			// backslash-escape it. Here’s the list of those symbols:
			//
			//     $()*+-.?[\]^{|}
			//
			// See #7 for more info.
			string = '\\' + stringFromCharCode(codePoint);
		}
		else if (codePoint >= 0x20 && codePoint <= 0x7E) {
			// The code point maps to one of these printable ASCII symbols
			// (including the space character):
			//
			//      !"#%&',/0123456789:;<=>@ABCDEFGHIJKLMNO
			//     PQRSTUVWXYZ_`abcdefghijklmnopqrstuvwxyz~
			//
			// These can safely be used directly.
			string = stringFromCharCode(codePoint);
		}
		else if (codePoint <= 0xFF) {
			// https://mathiasbynens.be/notes/javascript-escapes#hexadecimal
			string = '\\x' + pad(hex(codePoint), 2);
		}
		else { // `codePoint <= 0xFFFF` holds true.
			// https://mathiasbynens.be/notes/javascript-escapes#unicode
			string = '\\u' + pad(hex(codePoint), 4);
		}

		// There’s no need to account for astral symbols / surrogate pairs here,
		// since `codePointToString` is private and only used for BMP code points.
		// But if that’s what you need, just add an `else` block with this code:
		//
		//     string = '\\u' + pad(hex(highSurrogate(codePoint)), 4)
		//     	+ '\\u' + pad(hex(lowSurrogate(codePoint)), 4);

		return string;
	};

	var symbolToCodePoint = function(symbol) {
		var length = symbol.length;
		var first = symbol.charCodeAt(0);
		var second;
		if (
			first >= HIGH_SURROGATE_MIN && first <= HIGH_SURROGATE_MAX &&
			length > 1 // There is a next code unit.
		) {
			// `first` is a high surrogate, and there is a next character. Assume
			// it’s a low surrogate (else it’s invalid usage of Regenerate anyway).
			second = symbol.charCodeAt(1);
			// https://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae
			return (first - HIGH_SURROGATE_MIN) * 0x400 +
				second - LOW_SURROGATE_MIN + 0x10000;
		}
		return first;
	};

	var createBMPCharacterClasses = function(data) {
		// Iterate over the data per `(start, end)` pair.
		var result = '';
		var index = 0;
		var start;
		var end;
		var length = data.length;
		if (dataIsSingleton(data)) {
			return codePointToString(data[0]);
		}
		while (index < length) {
			start = data[index];
			end = data[index + 1] - 1; // Note: the `- 1` makes `end` inclusive.
			if (start == end) {
				result += codePointToString(start);
			} else if (start + 1 == end) {
				result += codePointToString(start) + codePointToString(end);
			} else {
				result += codePointToString(start) + '-' + codePointToString(end);
			}
			index += 2;
		}
		return '[' + result + ']';
	};

	var splitAtBMP = function(data) {
		// Iterate over the data per `(start, end)` pair.
		var loneHighSurrogates = [];
		var loneLowSurrogates = [];
		var bmp = [];
		var astral = [];
		var index = 0;
		var start;
		var end;
		var length = data.length;
		while (index < length) {
			start = data[index];
			end = data[index + 1] - 1; // Note: the `- 1` makes `end` inclusive.

			if (start < HIGH_SURROGATE_MIN) {

				// The range starts and ends before the high surrogate range.
				// E.g. (0, 0x10).
				if (end < HIGH_SURROGATE_MIN) {
					bmp.push(start, end + 1);
				}

				// The range starts before the high surrogate range and ends within it.
				// E.g. (0, 0xD855).
				if (end >= HIGH_SURROGATE_MIN && end <= HIGH_SURROGATE_MAX) {
					bmp.push(start, HIGH_SURROGATE_MIN);
					loneHighSurrogates.push(HIGH_SURROGATE_MIN, end + 1);
				}

				// The range starts before the high surrogate range and ends in the low
				// surrogate range. E.g. (0, 0xDCFF).
				if (end >= LOW_SURROGATE_MIN && end <= LOW_SURROGATE_MAX) {
					bmp.push(start, HIGH_SURROGATE_MIN);
					loneHighSurrogates.push(HIGH_SURROGATE_MIN, HIGH_SURROGATE_MAX + 1);
					loneLowSurrogates.push(LOW_SURROGATE_MIN, end + 1);
				}

				// The range starts before the high surrogate range and ends after the
				// low surrogate range. E.g. (0, 0x10FFFF).
				if (end > LOW_SURROGATE_MAX) {
					bmp.push(start, HIGH_SURROGATE_MIN);
					loneHighSurrogates.push(HIGH_SURROGATE_MIN, HIGH_SURROGATE_MAX + 1);
					loneLowSurrogates.push(LOW_SURROGATE_MIN, LOW_SURROGATE_MAX + 1);
					if (end <= 0xFFFF) {
						bmp.push(LOW_SURROGATE_MAX + 1, end + 1);
					} else {
						bmp.push(LOW_SURROGATE_MAX + 1, 0xFFFF + 1);
						astral.push(0xFFFF + 1, end + 1);
					}
				}

			} else if (start >= HIGH_SURROGATE_MIN && start <= HIGH_SURROGATE_MAX) {

				// The range starts and ends in the high surrogate range.
				// E.g. (0xD855, 0xD866).
				if (end >= HIGH_SURROGATE_MIN && end <= HIGH_SURROGATE_MAX) {
					loneHighSurrogates.push(start, end + 1);
				}

				// The range starts in the high surrogate range and ends in the low
				// surrogate range. E.g. (0xD855, 0xDCFF).
				if (end >= LOW_SURROGATE_MIN && end <= LOW_SURROGATE_MAX) {
					loneHighSurrogates.push(start, HIGH_SURROGATE_MAX + 1);
					loneLowSurrogates.push(LOW_SURROGATE_MIN, end + 1);
				}

				// The range starts in the high surrogate range and ends after the low
				// surrogate range. E.g. (0xD855, 0x10FFFF).
				if (end > LOW_SURROGATE_MAX) {
					loneHighSurrogates.push(start, HIGH_SURROGATE_MAX + 1);
					loneLowSurrogates.push(LOW_SURROGATE_MIN, LOW_SURROGATE_MAX + 1);
					if (end <= 0xFFFF) {
						bmp.push(LOW_SURROGATE_MAX + 1, end + 1);
					} else {
						bmp.push(LOW_SURROGATE_MAX + 1, 0xFFFF + 1);
						astral.push(0xFFFF + 1, end + 1);
					}
				}

			} else if (start >= LOW_SURROGATE_MIN && start <= LOW_SURROGATE_MAX) {

				// The range starts and ends in the low surrogate range.
				// E.g. (0xDCFF, 0xDDFF).
				if (end >= LOW_SURROGATE_MIN && end <= LOW_SURROGATE_MAX) {
					loneLowSurrogates.push(start, end + 1);
				}

				// The range starts in the low surrogate range and ends after the low
				// surrogate range. E.g. (0xDCFF, 0x10FFFF).
				if (end > LOW_SURROGATE_MAX) {
					loneLowSurrogates.push(start, LOW_SURROGATE_MAX + 1);
					if (end <= 0xFFFF) {
						bmp.push(LOW_SURROGATE_MAX + 1, end + 1);
					} else {
						bmp.push(LOW_SURROGATE_MAX + 1, 0xFFFF + 1);
						astral.push(0xFFFF + 1, end + 1);
					}
				}

			} else if (start > LOW_SURROGATE_MAX && start <= 0xFFFF) {

				// The range starts and ends after the low surrogate range.
				// E.g. (0xFFAA, 0x10FFFF).
				if (end <= 0xFFFF) {
					bmp.push(start, end + 1);
				} else {
					bmp.push(start, 0xFFFF + 1);
					astral.push(0xFFFF + 1, end + 1);
				}

			} else {

				// The range starts and ends in the astral range.
				astral.push(start, end + 1);

			}

			index += 2;
		}
		return {
			'loneHighSurrogates': loneHighSurrogates,
			'loneLowSurrogates': loneLowSurrogates,
			'bmp': bmp,
			'astral': astral
		};
	};

	var optimizeSurrogateMappings = function(surrogateMappings) {
		var result = [];
		var tmpLow = [];
		var addLow = false;
		var mapping;
		var nextMapping;
		var highSurrogates;
		var lowSurrogates;
		var nextHighSurrogates;
		var nextLowSurrogates;
		var index = -1;
		var length = surrogateMappings.length;
		while (++index < length) {
			mapping = surrogateMappings[index];
			nextMapping = surrogateMappings[index + 1];
			if (!nextMapping) {
				result.push(mapping);
				continue;
			}
			highSurrogates = mapping[0];
			lowSurrogates = mapping[1];
			nextHighSurrogates = nextMapping[0];
			nextLowSurrogates = nextMapping[1];

			// Check for identical high surrogate ranges.
			tmpLow = lowSurrogates;
			while (
				nextHighSurrogates &&
				highSurrogates[0] == nextHighSurrogates[0] &&
				highSurrogates[1] == nextHighSurrogates[1]
			) {
				// Merge with the next item.
				if (dataIsSingleton(nextLowSurrogates)) {
					tmpLow = dataAdd(tmpLow, nextLowSurrogates[0]);
				} else {
					tmpLow = dataAddRange(
						tmpLow,
						nextLowSurrogates[0],
						nextLowSurrogates[1] - 1
					);
				}
				++index;
				mapping = surrogateMappings[index];
				highSurrogates = mapping[0];
				lowSurrogates = mapping[1];
				nextMapping = surrogateMappings[index + 1];
				nextHighSurrogates = nextMapping && nextMapping[0];
				nextLowSurrogates = nextMapping && nextMapping[1];
				addLow = true;
			}
			result.push([
				highSurrogates,
				addLow ? tmpLow : lowSurrogates
			]);
			addLow = false;
		}
		return optimizeByLowSurrogates(result);
	};

	var optimizeByLowSurrogates = function(surrogateMappings) {
		if (surrogateMappings.length == 1) {
			return surrogateMappings;
		}
		var index = -1;
		var innerIndex = -1;
		while (++index < surrogateMappings.length) {
			var mapping = surrogateMappings[index];
			var lowSurrogates = mapping[1];
			var lowSurrogateStart = lowSurrogates[0];
			var lowSurrogateEnd = lowSurrogates[1];
			innerIndex = index; // Note: the loop starts at the next index.
			while (++innerIndex < surrogateMappings.length) {
				var otherMapping = surrogateMappings[innerIndex];
				var otherLowSurrogates = otherMapping[1];
				var otherLowSurrogateStart = otherLowSurrogates[0];
				var otherLowSurrogateEnd = otherLowSurrogates[1];
				if (
					lowSurrogateStart == otherLowSurrogateStart &&
					lowSurrogateEnd == otherLowSurrogateEnd
				) {
					// Add the code points in the other item to this one.
					if (dataIsSingleton(otherMapping[0])) {
						mapping[0] = dataAdd(mapping[0], otherMapping[0][0]);
					} else {
						mapping[0] = dataAddRange(
							mapping[0],
							otherMapping[0][0],
							otherMapping[0][1] - 1
						);
					}
					// Remove the other, now redundant, item.
					surrogateMappings.splice(innerIndex, 1);
					--innerIndex;
				}
			}
		}
		return surrogateMappings;
	};

	var surrogateSet = function(data) {
		// Exit early if `data` is an empty set.
		if (!data.length) {
			return [];
		}

		// Iterate over the data per `(start, end)` pair.
		var index = 0;
		var start;
		var end;
		var startHigh;
		var startLow;
		var prevStartHigh = 0;
		var prevEndHigh = 0;
		var tmpLow = [];
		var endHigh;
		var endLow;
		var surrogateMappings = [];
		var length = data.length;
		var dataHigh = [];
		while (index < length) {
			start = data[index];
			end = data[index + 1] - 1;

			startHigh = highSurrogate(start);
			startLow = lowSurrogate(start);
			endHigh = highSurrogate(end);
			endLow = lowSurrogate(end);

			var startsWithLowestLowSurrogate = startLow == LOW_SURROGATE_MIN;
			var endsWithHighestLowSurrogate = endLow == LOW_SURROGATE_MAX;
			var complete = false;

			// Append the previous high-surrogate-to-low-surrogate mappings.
			// Step 1: `(startHigh, startLow)` to `(startHigh, LOW_SURROGATE_MAX)`.
			if (
				startHigh == endHigh ||
				startsWithLowestLowSurrogate && endsWithHighestLowSurrogate
			) {
				surrogateMappings.push([
					[startHigh, endHigh + 1],
					[startLow, endLow + 1]
				]);
				complete = true;
			} else {
				surrogateMappings.push([
					[startHigh, startHigh + 1],
					[startLow, LOW_SURROGATE_MAX + 1]
				]);
			}

			// Step 2: `(startHigh + 1, LOW_SURROGATE_MIN)` to
			// `(endHigh - 1, LOW_SURROGATE_MAX)`.
			if (!complete && startHigh + 1 < endHigh) {
				if (endsWithHighestLowSurrogate) {
					// Combine step 2 and step 3.
					surrogateMappings.push([
						[startHigh + 1, endHigh + 1],
						[LOW_SURROGATE_MIN, endLow + 1]
					]);
					complete = true;
				} else {
					surrogateMappings.push([
						[startHigh + 1, endHigh],
						[LOW_SURROGATE_MIN, LOW_SURROGATE_MAX + 1]
					]);
				}
			}

			// Step 3. `(endHigh, LOW_SURROGATE_MIN)` to `(endHigh, endLow)`.
			if (!complete) {
				surrogateMappings.push([
					[endHigh, endHigh + 1],
					[LOW_SURROGATE_MIN, endLow + 1]
				]);
			}

			prevStartHigh = startHigh;
			prevEndHigh = endHigh;

			index += 2;
		}

		// The format of `surrogateMappings` is as follows:
		//
		//     [ surrogateMapping1, surrogateMapping2 ]
		//
		// i.e.:
		//
		//     [
		//       [ highSurrogates1, lowSurrogates1 ],
		//       [ highSurrogates2, lowSurrogates2 ]
		//     ]
		return optimizeSurrogateMappings(surrogateMappings);
	};

	var createSurrogateCharacterClasses = function(surrogateMappings) {
		var result = [];
		forEach(surrogateMappings, function(surrogateMapping) {
			var highSurrogates = surrogateMapping[0];
			var lowSurrogates = surrogateMapping[1];
			result.push(
				createBMPCharacterClasses(highSurrogates) +
				createBMPCharacterClasses(lowSurrogates)
			);
		});
		return result.join('|');
	};

	var createCharacterClassesFromData = function(data, bmpOnly) {
		var result = [];

		var parts = splitAtBMP(data);
		var loneHighSurrogates = parts.loneHighSurrogates;
		var loneLowSurrogates = parts.loneLowSurrogates;
		var bmp = parts.bmp;
		var astral = parts.astral;
		var hasAstral = !dataIsEmpty(parts.astral);
		var hasLoneHighSurrogates = !dataIsEmpty(loneHighSurrogates);
		var hasLoneLowSurrogates = !dataIsEmpty(loneLowSurrogates);

		var surrogateMappings = surrogateSet(astral);

		if (bmpOnly) {
			bmp = dataAddData(bmp, loneHighSurrogates);
			hasLoneHighSurrogates = false;
			bmp = dataAddData(bmp, loneLowSurrogates);
			hasLoneLowSurrogates = false;
		}

		if (!dataIsEmpty(bmp)) {
			// The data set contains BMP code points that are not high surrogates
			// needed for astral code points in the set.
			result.push(createBMPCharacterClasses(bmp));
		}
		if (surrogateMappings.length) {
			// The data set contains astral code points; append character classes
			// based on their surrogate pairs.
			result.push(createSurrogateCharacterClasses(surrogateMappings));
		}
		// https://gist.github.com/mathiasbynens/bbe7f870208abcfec860
		if (hasLoneHighSurrogates) {
			result.push(
				createBMPCharacterClasses(loneHighSurrogates) +
				// Make sure the high surrogates aren’t part of a surrogate pair.
				'(?![\\uDC00-\\uDFFF])'
			);
		}
		if (hasLoneLowSurrogates) {
			result.push(
				// Make sure the low surrogates aren’t part of a surrogate pair.
				'(?:[^\\uD800-\\uDBFF]|^)' +
				createBMPCharacterClasses(loneLowSurrogates)
			);
		}
		return result.join('|');
	};

	/*--------------------------------------------------------------------------*/

	// `regenerate` can be used as a constructor (and new methods can be added to
	// its prototype) but also as a regular function, the latter of which is the
	// documented and most common usage. For that reason, it’s not capitalized.
	var regenerate = function(value) {
		if (arguments.length > 1) {
			value = slice.call(arguments);
		}
		if (this instanceof regenerate) {
			this.data = [];
			return value ? this.add(value) : this;
		}
		return (new regenerate).add(value);
	};

	regenerate.version = '1.2.0';

	var proto = regenerate.prototype;
	extend(proto, {
		'add': function(value) {
			var $this = this;
			if (value == null) {
				return $this;
			}
			if (value instanceof regenerate) {
				// Allow passing other Regenerate instances.
				$this.data = dataAddData($this.data, value.data);
				return $this;
			}
			if (arguments.length > 1) {
				value = slice.call(arguments);
			}
			if (isArray(value)) {
				forEach(value, function(item) {
					$this.add(item);
				});
				return $this;
			}
			$this.data = dataAdd(
				$this.data,
				isNumber(value) ? value : symbolToCodePoint(value)
			);
			return $this;
		},
		'remove': function(value) {
			var $this = this;
			if (value == null) {
				return $this;
			}
			if (value instanceof regenerate) {
				// Allow passing other Regenerate instances.
				$this.data = dataRemoveData($this.data, value.data);
				return $this;
			}
			if (arguments.length > 1) {
				value = slice.call(arguments);
			}
			if (isArray(value)) {
				forEach(value, function(item) {
					$this.remove(item);
				});
				return $this;
			}
			$this.data = dataRemove(
				$this.data,
				isNumber(value) ? value : symbolToCodePoint(value)
			);
			return $this;
		},
		'addRange': function(start, end) {
			var $this = this;
			$this.data = dataAddRange($this.data,
				isNumber(start) ? start : symbolToCodePoint(start),
				isNumber(end) ? end : symbolToCodePoint(end)
			);
			return $this;
		},
		'removeRange': function(start, end) {
			var $this = this;
			var startCodePoint = isNumber(start) ? start : symbolToCodePoint(start);
			var endCodePoint = isNumber(end) ? end : symbolToCodePoint(end);
			$this.data = dataRemoveRange(
				$this.data,
				startCodePoint,
				endCodePoint
			);
			return $this;
		},
		'intersection': function(argument) {
			var $this = this;
			// Allow passing other Regenerate instances.
			// TODO: Optimize this by writing and using `dataIntersectionData()`.
			var array = argument instanceof regenerate ?
				dataToArray(argument.data) :
				argument;
			$this.data = dataIntersection($this.data, array);
			return $this;
		},
		'contains': function(codePoint) {
			return dataContains(
				this.data,
				isNumber(codePoint) ? codePoint : symbolToCodePoint(codePoint)
			);
		},
		'clone': function() {
			var set = new regenerate;
			set.data = this.data.slice(0);
			return set;
		},
		'toString': function(options) {
			var result = createCharacterClassesFromData(
				this.data,
				options ? options.bmpOnly : false
			);
			// Use `\0` instead of `\x00` where possible.
			return result.replace(regexNull, '\\0$1');
		},
		'toRegExp': function(flags) {
			return RegExp(this.toString(), flags || '');
		},
		'valueOf': function() { // Note: `valueOf` is aliased as `toArray`.
			return dataToArray(this.data);
		}
	});

	proto.toArray = proto.valueOf;

	// Some AMD build optimizers, like r.js, check for specific condition patterns
	// like the following:
	if (
		typeof define == 'function' &&
		typeof define.amd == 'object' &&
		define.amd
	) {
		define(function() {
			return regenerate;
		});
	}	else if (freeExports && !freeExports.nodeType) {
		if (freeModule) { // in Node.js, io.js, or RingoJS v0.8.0+
			freeModule.exports = regenerate;
		} else { // in Narwhal or RingoJS v0.7.0-
			freeExports.regenerate = regenerate;
		}
	} else { // in Rhino or a web browser
		root.regenerate = regenerate;
	}

}(this));

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],476:[function(require,module,exports){
(function (global){
/*!
 * RegJSGen
 * Copyright 2014 Benjamin Tan <https://d10.github.io/>
 * Available under MIT license <http://d10.mit-license.org/>
 */
;(function() {
  'use strict';

  /** Used to determine if values are of the language type `Object` */
  var objectTypes = {
    'function': true,
    'object': true
  };

  /** Used as a reference to the global object */
  var root = (objectTypes[typeof window] && window) || this;

  /** Backup possible global object */
  var oldRoot = root;

  /** Detect free variable `exports` */
  var freeExports = objectTypes[typeof exports] && exports;

  /** Detect free variable `module` */
  var freeModule = objectTypes[typeof module] && module && !module.nodeType && module;

  /** Detect free variable `global` from Node.js or Browserified code and use it as `root` */
  var freeGlobal = freeExports && freeModule && typeof global == 'object' && global;
  if (freeGlobal && (freeGlobal.global === freeGlobal || freeGlobal.window === freeGlobal || freeGlobal.self === freeGlobal)) {
    root = freeGlobal;
  }

  /*--------------------------------------------------------------------------*/

  /*! Based on https://mths.be/fromcodepoint v0.2.0 by @mathias */

  var stringFromCharCode = String.fromCharCode;
  var floor = Math.floor;
  function fromCodePoint() {
    var MAX_SIZE = 0x4000;
    var codeUnits = [];
    var highSurrogate;
    var lowSurrogate;
    var index = -1;
    var length = arguments.length;
    if (!length) {
      return '';
    }
    var result = '';
    while (++index < length) {
      var codePoint = Number(arguments[index]);
      if (
        !isFinite(codePoint) || // `NaN`, `+Infinity`, or `-Infinity`
        codePoint < 0 || // not a valid Unicode code point
        codePoint > 0x10FFFF || // not a valid Unicode code point
        floor(codePoint) != codePoint // not an integer
      ) {
        throw RangeError('Invalid code point: ' + codePoint);
      }
      if (codePoint <= 0xFFFF) {
        // BMP code point
        codeUnits.push(codePoint);
      } else {
        // Astral code point; split in surrogate halves
        // http://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae
        codePoint -= 0x10000;
        highSurrogate = (codePoint >> 10) + 0xD800;
        lowSurrogate = (codePoint % 0x400) + 0xDC00;
        codeUnits.push(highSurrogate, lowSurrogate);
      }
      if (index + 1 == length || codeUnits.length > MAX_SIZE) {
        result += stringFromCharCode.apply(null, codeUnits);
        codeUnits.length = 0;
      }
    }
    return result;
  }

  function assertType(type, expected) {
    if (expected.indexOf('|') == -1) {
      if (type == expected) {
        return;
      }

      throw Error('Invalid node type: ' + type);
    }

    expected = assertType.hasOwnProperty(expected)
      ? assertType[expected]
      : (assertType[expected] = RegExp('^(?:' + expected + ')$'));

    if (expected.test(type)) {
      return;
    }

    throw Error('Invalid node type: ' + type);
  }

  /*--------------------------------------------------------------------------*/

  function generate(node) {
    var type = node.type;

    if (generate.hasOwnProperty(type) && typeof generate[type] == 'function') {
      return generate[type](node);
    }

    throw Error('Invalid node type: ' + type);
  }

  /*--------------------------------------------------------------------------*/

  function generateAlternative(node) {
    assertType(node.type, 'alternative');

    var terms = node.body,
        length = terms ? terms.length : 0;

    if (length == 1) {
      return generateTerm(terms[0]);
    } else {
      var i = -1,
          result = '';

      while (++i < length) {
        result += generateTerm(terms[i]);
      }

      return result;
    }
  }

  function generateAnchor(node) {
    assertType(node.type, 'anchor');

    switch (node.kind) {
      case 'start':
        return '^';
      case 'end':
        return '$';
      case 'boundary':
        return '\\b';
      case 'not-boundary':
        return '\\B';
      default:
        throw Error('Invalid assertion');
    }
  }

  function generateAtom(node) {
    assertType(node.type, 'anchor|characterClass|characterClassEscape|dot|group|reference|value');

    return generate(node);
  }

  function generateCharacterClass(node) {
    assertType(node.type, 'characterClass');

    var classRanges = node.body,
        length = classRanges ? classRanges.length : 0;

    var i = -1,
        result = '[';

    if (node.negative) {
      result += '^';
    }

    while (++i < length) {
      result += generateClassAtom(classRanges[i]);
    }

    result += ']';

    return result;
  }

  function generateCharacterClassEscape(node) {
    assertType(node.type, 'characterClassEscape');

    return '\\' + node.value;
  }

  function generateCharacterClassRange(node) {
    assertType(node.type, 'characterClassRange');

    var min = node.min,
        max = node.max;

    if (min.type == 'characterClassRange' || max.type == 'characterClassRange') {
      throw Error('Invalid character class range');
    }

    return generateClassAtom(min) + '-' + generateClassAtom(max);
  }

  function generateClassAtom(node) {
    assertType(node.type, 'anchor|characterClassEscape|characterClassRange|dot|value');

    return generate(node);
  }

  function generateDisjunction(node) {
    assertType(node.type, 'disjunction');

    var body = node.body,
        length = body ? body.length : 0;

    if (length == 0) {
      throw Error('No body');
    } else if (length == 1) {
      return generate(body[0]);
    } else {
      var i = -1,
          result = '';

      while (++i < length) {
        if (i != 0) {
          result += '|';
        }
        result += generate(body[i]);
      }

      return result;
    }
  }

  function generateDot(node) {
    assertType(node.type, 'dot');

    return '.';
  }

  function generateGroup(node) {
    assertType(node.type, 'group');

    var result = '(';

    switch (node.behavior) {
      case 'normal':
        break;
      case 'ignore':
        result += '?:';
        break;
      case 'lookahead':
        result += '?=';
        break;
      case 'negativeLookahead':
        result += '?!';
        break;
      default:
        throw Error('Invalid behaviour: ' + node.behaviour);
    }

    var body = node.body,
        length = body ? body.length : 0;

    if (length == 1) {
      result += generate(body[0]);
    } else {
      var i = -1;

      while (++i < length) {
        result += generate(body[i]);
      }
    }

    result += ')';

    return result;
  }

  function generateQuantifier(node) {
    assertType(node.type, 'quantifier');

    var quantifier = '',
        min = node.min,
        max = node.max;

    switch (max) {
      case undefined:
      case null:
        switch (min) {
          case 0:
            quantifier = '*'
            break;
          case 1:
            quantifier = '+';
            break;
          default:
            quantifier = '{' + min + ',}';
            break;
        }
        break;
      default:
        if (min == max) {
          quantifier = '{' + min + '}';
        }
        else if (min == 0 && max == 1) {
          quantifier = '?';
        } else {
          quantifier = '{' + min + ',' + max + '}';
        }
        break;
    }

    if (!node.greedy) {
      quantifier += '?';
    }

    return generateAtom(node.body[0]) + quantifier;
  }

  function generateReference(node) {
    assertType(node.type, 'reference');

    return '\\' + node.matchIndex;
  }

  function generateTerm(node) {
    assertType(node.type, 'anchor|characterClass|characterClassEscape|empty|group|quantifier|reference|value');

    return generate(node);
  }

  function generateValue(node) {
    assertType(node.type, 'value');

    var kind = node.kind,
        codePoint = node.codePoint;

    switch (kind) {
      case 'controlLetter':
        return '\\c' + fromCodePoint(codePoint + 64);
      case 'hexadecimalEscape':
        return '\\x' + ('00' + codePoint.toString(16).toUpperCase()).slice(-2);
      case 'identifier':
        return '\\' + fromCodePoint(codePoint);
      case 'null':
        return '\\' + codePoint;
      case 'octal':
        return '\\' + codePoint.toString(8);
      case 'singleEscape':
        switch (codePoint) {
          case 0x0008:
            return '\\b';
          case 0x009:
            return '\\t';
          case 0x00A:
            return '\\n';
          case 0x00B:
            return '\\v';
          case 0x00C:
            return '\\f';
          case 0x00D:
            return '\\r';
          default:
            throw Error('Invalid codepoint: ' + codePoint);
        }
      case 'symbol':
        return fromCodePoint(codePoint);
      case 'unicodeEscape':
        return '\\u' + ('0000' + codePoint.toString(16).toUpperCase()).slice(-4);
      case 'unicodeCodePointEscape':
        return '\\u{' + codePoint.toString(16).toUpperCase() + '}';
      default:
        throw Error('Unsupported node kind: ' + kind);
    }
  }

  /*--------------------------------------------------------------------------*/

  generate.alternative = generateAlternative;
  generate.anchor = generateAnchor;
  generate.characterClass = generateCharacterClass;
  generate.characterClassEscape = generateCharacterClassEscape;
  generate.characterClassRange = generateCharacterClassRange;
  generate.disjunction = generateDisjunction;
  generate.dot = generateDot;
  generate.group = generateGroup;
  generate.quantifier = generateQuantifier;
  generate.reference = generateReference;
  generate.value = generateValue;

  /*--------------------------------------------------------------------------*/

  // export regjsgen
  // some AMD build optimizers, like r.js, check for condition patterns like the following:
  if (typeof define == 'function' && typeof define.amd == 'object' && define.amd) {
    // define as an anonymous module so, through path mapping, it can be aliased
    define(function() {
      return {
        'generate': generate
      };
    });
  }
  // check for `exports` after `define` in case a build optimizer adds an `exports` object
  else if (freeExports && freeModule) {
    // in Narwhal, Node.js, Rhino -require, or RingoJS
    freeExports.generate = generate;
  }
  // in a browser or Rhino
  else {
    root.regjsgen = {
      'generate': generate
    };
  }
}.call(this));

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],477:[function(require,module,exports){
// regjsparser
//
// ==================================================================
//
// See ECMA-262 Standard: 15.10.1
//
// NOTE: The ECMA-262 standard uses the term "Assertion" for /^/. Here the
//   term "Anchor" is used.
//
// Pattern ::
//      Disjunction
//
// Disjunction ::
//      Alternative
//      Alternative | Disjunction
//
// Alternative ::
//      [empty]
//      Alternative Term
//
// Term ::
//      Anchor
//      Atom
//      Atom Quantifier
//
// Anchor ::
//      ^
//      $
//      \ b
//      \ B
//      ( ? = Disjunction )
//      ( ? ! Disjunction )
//
// Quantifier ::
//      QuantifierPrefix
//      QuantifierPrefix ?
//
// QuantifierPrefix ::
//      *
//      +
//      ?
//      { DecimalDigits }
//      { DecimalDigits , }
//      { DecimalDigits , DecimalDigits }
//
// Atom ::
//      PatternCharacter
//      .
//      \ AtomEscape
//      CharacterClass
//      ( Disjunction )
//      ( ? : Disjunction )
//
// PatternCharacter ::
//      SourceCharacter but not any of: ^ $ \ . * + ? ( ) [ ] { } |
//
// AtomEscape ::
//      DecimalEscape
//      CharacterEscape
//      CharacterClassEscape
//
// CharacterEscape[U] ::
//      ControlEscape
//      c ControlLetter
//      HexEscapeSequence
//      RegExpUnicodeEscapeSequence[?U] (ES6)
//      IdentityEscape[?U]
//
// ControlEscape ::
//      one of f n r t v
// ControlLetter ::
//      one of
//          a b c d e f g h i j k l m n o p q r s t u v w x y z
//          A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
//
// IdentityEscape ::
//      SourceCharacter but not IdentifierPart
//      <ZWJ>
//      <ZWNJ>
//
// DecimalEscape ::
//      DecimalIntegerLiteral [lookahead ∉ DecimalDigit]
//
// CharacterClassEscape ::
//      one of d D s S w W
//
// CharacterClass ::
//      [ [lookahead ∉ {^}] ClassRanges ]
//      [ ^ ClassRanges ]
//
// ClassRanges ::
//      [empty]
//      NonemptyClassRanges
//
// NonemptyClassRanges ::
//      ClassAtom
//      ClassAtom NonemptyClassRangesNoDash
//      ClassAtom - ClassAtom ClassRanges
//
// NonemptyClassRangesNoDash ::
//      ClassAtom
//      ClassAtomNoDash NonemptyClassRangesNoDash
//      ClassAtomNoDash - ClassAtom ClassRanges
//
// ClassAtom ::
//      -
//      ClassAtomNoDash
//
// ClassAtomNoDash ::
//      SourceCharacter but not one of \ or ] or -
//      \ ClassEscape
//
// ClassEscape ::
//      DecimalEscape
//      b
//      CharacterEscape
//      CharacterClassEscape

(function() {

  function parse(str, flags) {
    function addRaw(node) {
      node.raw = str.substring(node.range[0], node.range[1]);
      return node;
    }

    function updateRawStart(node, start) {
      node.range[0] = start;
      return addRaw(node);
    }

    function createAnchor(kind, rawLength) {
      return addRaw({
        type: 'anchor',
        kind: kind,
        range: [
          pos - rawLength,
          pos
        ]
      });
    }

    function createValue(kind, codePoint, from, to) {
      return addRaw({
        type: 'value',
        kind: kind,
        codePoint: codePoint,
        range: [from, to]
      });
    }

    function createEscaped(kind, codePoint, value, fromOffset) {
      fromOffset = fromOffset || 0;
      return createValue(kind, codePoint, pos - (value.length + fromOffset), pos);
    }

    function createCharacter(matches) {
      var _char = matches[0];
      var first = _char.charCodeAt(0);
      if (hasUnicodeFlag) {
        var second;
        if (_char.length === 1 && first >= 0xD800 && first <= 0xDBFF) {
          second = lookahead().charCodeAt(0);
          if (second >= 0xDC00 && second <= 0xDFFF) {
            // Unicode surrogate pair
            pos++;
            return createValue(
                'symbol',
                (first - 0xD800) * 0x400 + second - 0xDC00 + 0x10000,
                pos - 2, pos);
          }
        }
      }
      return createValue('symbol', first, pos - 1, pos);
    }

    function createDisjunction(alternatives, from, to) {
      return addRaw({
        type: 'disjunction',
        body: alternatives,
        range: [
          from,
          to
        ]
      });
    }

    function createDot() {
      return addRaw({
        type: 'dot',
        range: [
          pos - 1,
          pos
        ]
      });
    }

    function createCharacterClassEscape(value) {
      return addRaw({
        type: 'characterClassEscape',
        value: value,
        range: [
          pos - 2,
          pos
        ]
      });
    }

    function createReference(matchIndex) {
      return addRaw({
        type: 'reference',
        matchIndex: parseInt(matchIndex, 10),
        range: [
          pos - 1 - matchIndex.length,
          pos
        ]
      });
    }

    function createGroup(behavior, disjunction, from, to) {
      return addRaw({
        type: 'group',
        behavior: behavior,
        body: disjunction,
        range: [
          from,
          to
        ]
      });
    }

    function createQuantifier(min, max, from, to) {
      if (to == null) {
        from = pos - 1;
        to = pos;
      }

      return addRaw({
        type: 'quantifier',
        min: min,
        max: max,
        greedy: true,
        body: null, // set later on,
        range: [
          from,
          to
        ]
      });
    }

    function createAlternative(terms, from, to) {
      return addRaw({
        type: 'alternative',
        body: terms,
        range: [
          from,
          to
        ]
      });
    }

    function createCharacterClass(classRanges, negative, from, to) {
      return addRaw({
        type: 'characterClass',
        body: classRanges,
        negative: negative,
        range: [
          from,
          to
        ]
      });
    }

    function createClassRange(min, max, from, to) {
      // See 15.10.2.15:
      if (min.codePoint > max.codePoint) {
        throw SyntaxError('invalid range in character class');
      }

      return addRaw({
        type: 'characterClassRange',
        min: min,
        max: max,
        range: [
          from,
          to
        ]
      });
    }

    function flattenBody(body) {
      if (body.type === 'alternative') {
        return body.body;
      } else {
        return [body];
      }
    }

    function isEmpty(obj) {
      return obj.type === 'empty';
    }

    function incr(amount) {
      amount = (amount || 1);
      var res = str.substring(pos, pos + amount);
      pos += (amount || 1);
      return res;
    }

    function skip(value) {
      if (!match(value)) {
        throw SyntaxError('character: ' + value);
      }
    }

    function match(value) {
      if (str.indexOf(value, pos) === pos) {
        return incr(value.length);
      }
    }

    function lookahead() {
      return str[pos];
    }

    function current(value) {
      return str.indexOf(value, pos) === pos;
    }

    function next(value) {
      return str[pos + 1] === value;
    }

    function matchReg(regExp) {
      var subStr = str.substring(pos);
      var res = subStr.match(regExp);
      if (res) {
        res.range = [];
        res.range[0] = pos;
        incr(res[0].length);
        res.range[1] = pos;
      }
      return res;
    }

    function parseDisjunction() {
      // Disjunction ::
      //      Alternative
      //      Alternative | Disjunction
      var res = [], from = pos;
      res.push(parseAlternative());

      while (match('|')) {
        res.push(parseAlternative());
      }

      if (res.length === 1) {
        return res[0];
      }

      return createDisjunction(res, from, pos);
    }

    function parseAlternative() {
      var res = [], from = pos;
      var term;

      // Alternative ::
      //      [empty]
      //      Alternative Term
      while (term = parseTerm()) {
        res.push(term);
      }

      if (res.length === 1) {
        return res[0];
      }

      return createAlternative(res, from, pos);
    }

    function parseTerm() {
      // Term ::
      //      Anchor
      //      Atom
      //      Atom Quantifier

      if (pos >= str.length || current('|') || current(')')) {
        return null; /* Means: The term is empty */
      }

      var anchor = parseAnchor();

      if (anchor) {
        return anchor;
      }

      var atom = parseAtom();
      if (!atom) {
        throw SyntaxError('Expected atom')
      }
      var quantifier = parseQuantifier() || false;
      if (quantifier) {
        quantifier.body = flattenBody(atom);
        // The quantifier contains the atom. Therefore, the beginning of the
        // quantifier range is given by the beginning of the atom.
        updateRawStart(quantifier, atom.range[0]);
        return quantifier;
      }
      return atom;
    }

    function parseGroup(matchA, typeA, matchB, typeB) {
      var type = null, from = pos;

      if (match(matchA)) {
        type = typeA;
      } else if (match(matchB)) {
        type = typeB;
      } else {
        return false;
      }

      var body = parseDisjunction();
      if (!body) {
        throw SyntaxError('Expected disjunction');
      }
      skip(')');
      var group = createGroup(type, flattenBody(body), from, pos);

      if (type == 'normal') {
        // Keep track of the number of closed groups. This is required for
        // parseDecimalEscape(). In case the string is parsed a second time the
        // value already holds the total count and no incrementation is required.
        if (firstIteration) {
          closedCaptureCounter++;
        }
      }
      return group;
    }

    function parseAnchor() {
      // Anchor ::
      //      ^
      //      $
      //      \ b
      //      \ B
      //      ( ? = Disjunction )
      //      ( ? ! Disjunction )
      var res, from = pos;

      if (match('^')) {
        return createAnchor('start', 1 /* rawLength */);
      } else if (match('$')) {
        return createAnchor('end', 1 /* rawLength */);
      } else if (match('\\b')) {
        return createAnchor('boundary', 2 /* rawLength */);
      } else if (match('\\B')) {
        return createAnchor('not-boundary', 2 /* rawLength */);
      } else {
        return parseGroup('(?=', 'lookahead', '(?!', 'negativeLookahead');
      }
    }

    function parseQuantifier() {
      // Quantifier ::
      //      QuantifierPrefix
      //      QuantifierPrefix ?
      //
      // QuantifierPrefix ::
      //      *
      //      +
      //      ?
      //      { DecimalDigits }
      //      { DecimalDigits , }
      //      { DecimalDigits , DecimalDigits }

      var res;
      var quantifier;
      var min, max;

      if (match('*')) {
        quantifier = createQuantifier(0);
      }
      else if (match('+')) {
        quantifier = createQuantifier(1);
      }
      else if (match('?')) {
        quantifier = createQuantifier(0, 1);
      }
      else if (res = matchReg(/^\{([0-9]+)\}/)) {
        min = parseInt(res[1], 10);
        quantifier = createQuantifier(min, min, res.range[0], res.range[1]);
      }
      else if (res = matchReg(/^\{([0-9]+),\}/)) {
        min = parseInt(res[1], 10);
        quantifier = createQuantifier(min, undefined, res.range[0], res.range[1]);
      }
      else if (res = matchReg(/^\{([0-9]+),([0-9]+)\}/)) {
        min = parseInt(res[1], 10);
        max = parseInt(res[2], 10);
        if (min > max) {
          throw SyntaxError('numbers out of order in {} quantifier');
        }
        quantifier = createQuantifier(min, max, res.range[0], res.range[1]);
      }

      if (quantifier) {
        if (match('?')) {
          quantifier.greedy = false;
          quantifier.range[1] += 1;
        }
      }

      return quantifier;
    }

    function parseAtom() {
      // Atom ::
      //      PatternCharacter
      //      .
      //      \ AtomEscape
      //      CharacterClass
      //      ( Disjunction )
      //      ( ? : Disjunction )

      var res;

      // jviereck: allow ']', '}' here as well to be compatible with browser's
      //   implementations: ']'.match(/]/);
      // if (res = matchReg(/^[^^$\\.*+?()[\]{}|]/)) {
      if (res = matchReg(/^[^^$\\.*+?(){[|]/)) {
        //      PatternCharacter
        return createCharacter(res);
      }
      else if (match('.')) {
        //      .
        return createDot();
      }
      else if (match('\\')) {
        //      \ AtomEscape
        res = parseAtomEscape();
        if (!res) {
          throw SyntaxError('atomEscape');
        }
        return res;
      }
      else if (res = parseCharacterClass()) {
        return res;
      }
      else {
        //      ( Disjunction )
        //      ( ? : Disjunction )
        return parseGroup('(?:', 'ignore', '(', 'normal');
      }
    }

    function parseUnicodeSurrogatePairEscape(firstEscape) {
      if (hasUnicodeFlag) {
        var first, second;
        if (firstEscape.kind == 'unicodeEscape' &&
          (first = firstEscape.codePoint) >= 0xD800 && first <= 0xDBFF &&
          current('\\') && next('u') ) {
          var prevPos = pos;
          pos++;
          var secondEscape = parseClassEscape();
          if (secondEscape.kind == 'unicodeEscape' &&
            (second = secondEscape.codePoint) >= 0xDC00 && second <= 0xDFFF) {
            // Unicode surrogate pair
            firstEscape.range[1] = secondEscape.range[1];
            firstEscape.codePoint = (first - 0xD800) * 0x400 + second - 0xDC00 + 0x10000;
            firstEscape.type = 'value';
            firstEscape.kind = 'unicodeCodePointEscape';
            addRaw(firstEscape);
          }
          else {
            pos = prevPos;
          }
        }
      }
      return firstEscape;
    }

    function parseClassEscape() {
      return parseAtomEscape(true);
    }

    function parseAtomEscape(insideCharacterClass) {
      // AtomEscape ::
      //      DecimalEscape
      //      CharacterEscape
      //      CharacterClassEscape

      var res;

      res = parseDecimalEscape();
      if (res) {
        return res;
      }

      // For ClassEscape
      if (insideCharacterClass) {
        if (match('b')) {
          // 15.10.2.19
          // The production ClassEscape :: b evaluates by returning the
          // CharSet containing the one character <BS> (Unicode value 0008).
          return createEscaped('singleEscape', 0x0008, '\\b');
        } else if (match('B')) {
          throw SyntaxError('\\B not possible inside of CharacterClass');
        }
      }

      res = parseCharacterEscape();

      return res;
    }


    function parseDecimalEscape() {
      // DecimalEscape ::
      //      DecimalIntegerLiteral [lookahead ∉ DecimalDigit]
      //      CharacterClassEscape :: one of d D s S w W

      var res, match;

      if (res = matchReg(/^(?!0)\d+/)) {
        match = res[0];
        var refIdx = parseInt(res[0], 10);
        if (refIdx <= closedCaptureCounter) {
          // If the number is smaller than the normal-groups found so
          // far, then it is a reference...
          return createReference(res[0]);
        } else {
          // ... otherwise it needs to be interpreted as a octal (if the
          // number is in an octal format). If it is NOT octal format,
          // then the slash is ignored and the number is matched later
          // as normal characters.

          // Recall the negative decision to decide if the input must be parsed
          // a second time with the total normal-groups.
          backrefDenied.push(refIdx);

          // Reset the position again, as maybe only parts of the previous
          // matched numbers are actual octal numbers. E.g. in '019' only
          // the '01' should be matched.
          incr(-res[0].length);
          if (res = matchReg(/^[0-7]{1,3}/)) {
            return createEscaped('octal', parseInt(res[0], 8), res[0], 1);
          } else {
            // If we end up here, we have a case like /\91/. Then the
            // first slash is to be ignored and the 9 & 1 to be treated
            // like ordinary characters. Create a character for the
            // first number only here - other number-characters
            // (if available) will be matched later.
            res = createCharacter(matchReg(/^[89]/));
            return updateRawStart(res, res.range[0] - 1);
          }
        }
      }
      // Only allow octal numbers in the following. All matched numbers start
      // with a zero (if the do not, the previous if-branch is executed).
      // If the number is not octal format and starts with zero (e.g. `091`)
      // then only the zeros `0` is treated here and the `91` are ordinary
      // characters.
      // Example:
      //   /\091/.exec('\091')[0].length === 3
      else if (res = matchReg(/^[0-7]{1,3}/)) {
        match = res[0];
        if (/^0{1,3}$/.test(match)) {
          // If they are all zeros, then only take the first one.
          return createEscaped('null', 0x0000, '0', match.length + 1);
        } else {
          return createEscaped('octal', parseInt(match, 8), match, 1);
        }
      } else if (res = matchReg(/^[dDsSwW]/)) {
        return createCharacterClassEscape(res[0]);
      }
      return false;
    }

    function parseCharacterEscape() {
      // CharacterEscape ::
      //      ControlEscape
      //      c ControlLetter
      //      HexEscapeSequence
      //      UnicodeEscapeSequence
      //      IdentityEscape

      var res;
      if (res = matchReg(/^[fnrtv]/)) {
        // ControlEscape
        var codePoint = 0;
        switch (res[0]) {
          case 't': codePoint = 0x009; break;
          case 'n': codePoint = 0x00A; break;
          case 'v': codePoint = 0x00B; break;
          case 'f': codePoint = 0x00C; break;
          case 'r': codePoint = 0x00D; break;
        }
        return createEscaped('singleEscape', codePoint, '\\' + res[0]);
      } else if (res = matchReg(/^c([a-zA-Z])/)) {
        // c ControlLetter
        return createEscaped('controlLetter', res[1].charCodeAt(0) % 32, res[1], 2);
      } else if (res = matchReg(/^x([0-9a-fA-F]{2})/)) {
        // HexEscapeSequence
        return createEscaped('hexadecimalEscape', parseInt(res[1], 16), res[1], 2);
      } else if (res = matchReg(/^u([0-9a-fA-F]{4})/)) {
        // UnicodeEscapeSequence
        return parseUnicodeSurrogatePairEscape(
          createEscaped('unicodeEscape', parseInt(res[1], 16), res[1], 2)
        );
      } else if (hasUnicodeFlag && (res = matchReg(/^u\{([0-9a-fA-F]+)\}/))) {
        // RegExpUnicodeEscapeSequence (ES6 Unicode code point escape)
        return createEscaped('unicodeCodePointEscape', parseInt(res[1], 16), res[1], 4);
      } else {
        // IdentityEscape
        return parseIdentityEscape();
      }
    }

    // Taken from the Esprima parser.
    function isIdentifierPart(ch) {
      // Generated by `tools/generate-identifier-regex.js`.
      var NonAsciiIdentifierPart = new RegExp('[\xAA\xB5\xBA\xC0-\xD6\xD8-\xF6\xF8-\u02C1\u02C6-\u02D1\u02E0-\u02E4\u02EC\u02EE\u0300-\u0374\u0376\u0377\u037A-\u037D\u037F\u0386\u0388-\u038A\u038C\u038E-\u03A1\u03A3-\u03F5\u03F7-\u0481\u0483-\u0487\u048A-\u052F\u0531-\u0556\u0559\u0561-\u0587\u0591-\u05BD\u05BF\u05C1\u05C2\u05C4\u05C5\u05C7\u05D0-\u05EA\u05F0-\u05F2\u0610-\u061A\u0620-\u0669\u066E-\u06D3\u06D5-\u06DC\u06DF-\u06E8\u06EA-\u06FC\u06FF\u0710-\u074A\u074D-\u07B1\u07C0-\u07F5\u07FA\u0800-\u082D\u0840-\u085B\u08A0-\u08B2\u08E4-\u0963\u0966-\u096F\u0971-\u0983\u0985-\u098C\u098F\u0990\u0993-\u09A8\u09AA-\u09B0\u09B2\u09B6-\u09B9\u09BC-\u09C4\u09C7\u09C8\u09CB-\u09CE\u09D7\u09DC\u09DD\u09DF-\u09E3\u09E6-\u09F1\u0A01-\u0A03\u0A05-\u0A0A\u0A0F\u0A10\u0A13-\u0A28\u0A2A-\u0A30\u0A32\u0A33\u0A35\u0A36\u0A38\u0A39\u0A3C\u0A3E-\u0A42\u0A47\u0A48\u0A4B-\u0A4D\u0A51\u0A59-\u0A5C\u0A5E\u0A66-\u0A75\u0A81-\u0A83\u0A85-\u0A8D\u0A8F-\u0A91\u0A93-\u0AA8\u0AAA-\u0AB0\u0AB2\u0AB3\u0AB5-\u0AB9\u0ABC-\u0AC5\u0AC7-\u0AC9\u0ACB-\u0ACD\u0AD0\u0AE0-\u0AE3\u0AE6-\u0AEF\u0B01-\u0B03\u0B05-\u0B0C\u0B0F\u0B10\u0B13-\u0B28\u0B2A-\u0B30\u0B32\u0B33\u0B35-\u0B39\u0B3C-\u0B44\u0B47\u0B48\u0B4B-\u0B4D\u0B56\u0B57\u0B5C\u0B5D\u0B5F-\u0B63\u0B66-\u0B6F\u0B71\u0B82\u0B83\u0B85-\u0B8A\u0B8E-\u0B90\u0B92-\u0B95\u0B99\u0B9A\u0B9C\u0B9E\u0B9F\u0BA3\u0BA4\u0BA8-\u0BAA\u0BAE-\u0BB9\u0BBE-\u0BC2\u0BC6-\u0BC8\u0BCA-\u0BCD\u0BD0\u0BD7\u0BE6-\u0BEF\u0C00-\u0C03\u0C05-\u0C0C\u0C0E-\u0C10\u0C12-\u0C28\u0C2A-\u0C39\u0C3D-\u0C44\u0C46-\u0C48\u0C4A-\u0C4D\u0C55\u0C56\u0C58\u0C59\u0C60-\u0C63\u0C66-\u0C6F\u0C81-\u0C83\u0C85-\u0C8C\u0C8E-\u0C90\u0C92-\u0CA8\u0CAA-\u0CB3\u0CB5-\u0CB9\u0CBC-\u0CC4\u0CC6-\u0CC8\u0CCA-\u0CCD\u0CD5\u0CD6\u0CDE\u0CE0-\u0CE3\u0CE6-\u0CEF\u0CF1\u0CF2\u0D01-\u0D03\u0D05-\u0D0C\u0D0E-\u0D10\u0D12-\u0D3A\u0D3D-\u0D44\u0D46-\u0D48\u0D4A-\u0D4E\u0D57\u0D60-\u0D63\u0D66-\u0D6F\u0D7A-\u0D7F\u0D82\u0D83\u0D85-\u0D96\u0D9A-\u0DB1\u0DB3-\u0DBB\u0DBD\u0DC0-\u0DC6\u0DCA\u0DCF-\u0DD4\u0DD6\u0DD8-\u0DDF\u0DE6-\u0DEF\u0DF2\u0DF3\u0E01-\u0E3A\u0E40-\u0E4E\u0E50-\u0E59\u0E81\u0E82\u0E84\u0E87\u0E88\u0E8A\u0E8D\u0E94-\u0E97\u0E99-\u0E9F\u0EA1-\u0EA3\u0EA5\u0EA7\u0EAA\u0EAB\u0EAD-\u0EB9\u0EBB-\u0EBD\u0EC0-\u0EC4\u0EC6\u0EC8-\u0ECD\u0ED0-\u0ED9\u0EDC-\u0EDF\u0F00\u0F18\u0F19\u0F20-\u0F29\u0F35\u0F37\u0F39\u0F3E-\u0F47\u0F49-\u0F6C\u0F71-\u0F84\u0F86-\u0F97\u0F99-\u0FBC\u0FC6\u1000-\u1049\u1050-\u109D\u10A0-\u10C5\u10C7\u10CD\u10D0-\u10FA\u10FC-\u1248\u124A-\u124D\u1250-\u1256\u1258\u125A-\u125D\u1260-\u1288\u128A-\u128D\u1290-\u12B0\u12B2-\u12B5\u12B8-\u12BE\u12C0\u12C2-\u12C5\u12C8-\u12D6\u12D8-\u1310\u1312-\u1315\u1318-\u135A\u135D-\u135F\u1380-\u138F\u13A0-\u13F4\u1401-\u166C\u166F-\u167F\u1681-\u169A\u16A0-\u16EA\u16EE-\u16F8\u1700-\u170C\u170E-\u1714\u1720-\u1734\u1740-\u1753\u1760-\u176C\u176E-\u1770\u1772\u1773\u1780-\u17D3\u17D7\u17DC\u17DD\u17E0-\u17E9\u180B-\u180D\u1810-\u1819\u1820-\u1877\u1880-\u18AA\u18B0-\u18F5\u1900-\u191E\u1920-\u192B\u1930-\u193B\u1946-\u196D\u1970-\u1974\u1980-\u19AB\u19B0-\u19C9\u19D0-\u19D9\u1A00-\u1A1B\u1A20-\u1A5E\u1A60-\u1A7C\u1A7F-\u1A89\u1A90-\u1A99\u1AA7\u1AB0-\u1ABD\u1B00-\u1B4B\u1B50-\u1B59\u1B6B-\u1B73\u1B80-\u1BF3\u1C00-\u1C37\u1C40-\u1C49\u1C4D-\u1C7D\u1CD0-\u1CD2\u1CD4-\u1CF6\u1CF8\u1CF9\u1D00-\u1DF5\u1DFC-\u1F15\u1F18-\u1F1D\u1F20-\u1F45\u1F48-\u1F4D\u1F50-\u1F57\u1F59\u1F5B\u1F5D\u1F5F-\u1F7D\u1F80-\u1FB4\u1FB6-\u1FBC\u1FBE\u1FC2-\u1FC4\u1FC6-\u1FCC\u1FD0-\u1FD3\u1FD6-\u1FDB\u1FE0-\u1FEC\u1FF2-\u1FF4\u1FF6-\u1FFC\u200C\u200D\u203F\u2040\u2054\u2071\u207F\u2090-\u209C\u20D0-\u20DC\u20E1\u20E5-\u20F0\u2102\u2107\u210A-\u2113\u2115\u2119-\u211D\u2124\u2126\u2128\u212A-\u212D\u212F-\u2139\u213C-\u213F\u2145-\u2149\u214E\u2160-\u2188\u2C00-\u2C2E\u2C30-\u2C5E\u2C60-\u2CE4\u2CEB-\u2CF3\u2D00-\u2D25\u2D27\u2D2D\u2D30-\u2D67\u2D6F\u2D7F-\u2D96\u2DA0-\u2DA6\u2DA8-\u2DAE\u2DB0-\u2DB6\u2DB8-\u2DBE\u2DC0-\u2DC6\u2DC8-\u2DCE\u2DD0-\u2DD6\u2DD8-\u2DDE\u2DE0-\u2DFF\u2E2F\u3005-\u3007\u3021-\u302F\u3031-\u3035\u3038-\u303C\u3041-\u3096\u3099\u309A\u309D-\u309F\u30A1-\u30FA\u30FC-\u30FF\u3105-\u312D\u3131-\u318E\u31A0-\u31BA\u31F0-\u31FF\u3400-\u4DB5\u4E00-\u9FCC\uA000-\uA48C\uA4D0-\uA4FD\uA500-\uA60C\uA610-\uA62B\uA640-\uA66F\uA674-\uA67D\uA67F-\uA69D\uA69F-\uA6F1\uA717-\uA71F\uA722-\uA788\uA78B-\uA78E\uA790-\uA7AD\uA7B0\uA7B1\uA7F7-\uA827\uA840-\uA873\uA880-\uA8C4\uA8D0-\uA8D9\uA8E0-\uA8F7\uA8FB\uA900-\uA92D\uA930-\uA953\uA960-\uA97C\uA980-\uA9C0\uA9CF-\uA9D9\uA9E0-\uA9FE\uAA00-\uAA36\uAA40-\uAA4D\uAA50-\uAA59\uAA60-\uAA76\uAA7A-\uAAC2\uAADB-\uAADD\uAAE0-\uAAEF\uAAF2-\uAAF6\uAB01-\uAB06\uAB09-\uAB0E\uAB11-\uAB16\uAB20-\uAB26\uAB28-\uAB2E\uAB30-\uAB5A\uAB5C-\uAB5F\uAB64\uAB65\uABC0-\uABEA\uABEC\uABED\uABF0-\uABF9\uAC00-\uD7A3\uD7B0-\uD7C6\uD7CB-\uD7FB\uF900-\uFA6D\uFA70-\uFAD9\uFB00-\uFB06\uFB13-\uFB17\uFB1D-\uFB28\uFB2A-\uFB36\uFB38-\uFB3C\uFB3E\uFB40\uFB41\uFB43\uFB44\uFB46-\uFBB1\uFBD3-\uFD3D\uFD50-\uFD8F\uFD92-\uFDC7\uFDF0-\uFDFB\uFE00-\uFE0F\uFE20-\uFE2D\uFE33\uFE34\uFE4D-\uFE4F\uFE70-\uFE74\uFE76-\uFEFC\uFF10-\uFF19\uFF21-\uFF3A\uFF3F\uFF41-\uFF5A\uFF66-\uFFBE\uFFC2-\uFFC7\uFFCA-\uFFCF\uFFD2-\uFFD7\uFFDA-\uFFDC]');

      return (ch === 36) || (ch === 95) ||  // $ (dollar) and _ (underscore)
        (ch >= 65 && ch <= 90) ||         // A..Z
        (ch >= 97 && ch <= 122) ||        // a..z
        (ch >= 48 && ch <= 57) ||         // 0..9
        (ch === 92) ||                    // \ (backslash)
        ((ch >= 0x80) && NonAsciiIdentifierPart.test(String.fromCharCode(ch)));
    }

    function parseIdentityEscape() {
      // IdentityEscape ::
      //      SourceCharacter but not IdentifierPart
      //      <ZWJ>
      //      <ZWNJ>

      var ZWJ = '\u200C';
      var ZWNJ = '\u200D';

      var res;
      var tmp;

      if (!isIdentifierPart(lookahead())) {
        tmp = incr();
        return createEscaped('identifier', tmp.charCodeAt(0), tmp, 1);
      }

      if (match(ZWJ)) {
        // <ZWJ>
        return createEscaped('identifier', 0x200C, ZWJ);
      } else if (match(ZWNJ)) {
        // <ZWNJ>
        return createEscaped('identifier', 0x200D, ZWNJ);
      }

      return null;
    }

    function parseCharacterClass() {
      // CharacterClass ::
      //      [ [lookahead ∉ {^}] ClassRanges ]
      //      [ ^ ClassRanges ]

      var res, from = pos;
      if (res = matchReg(/^\[\^/)) {
        res = parseClassRanges();
        skip(']');
        return createCharacterClass(res, true, from, pos);
      } else if (match('[')) {
        res = parseClassRanges();
        skip(']');
        return createCharacterClass(res, false, from, pos);
      }

      return null;
    }

    function parseClassRanges() {
      // ClassRanges ::
      //      [empty]
      //      NonemptyClassRanges

      var res;
      if (current(']')) {
        // Empty array means nothing insinde of the ClassRange.
        return [];
      } else {
        res = parseNonemptyClassRanges();
        if (!res) {
          throw SyntaxError('nonEmptyClassRanges');
        }
        return res;
      }
    }

    function parseHelperClassRanges(atom) {
      var from, to, res;
      if (current('-') && !next(']')) {
        // ClassAtom - ClassAtom ClassRanges
        skip('-');

        res = parseClassAtom();
        if (!res) {
          throw SyntaxError('classAtom');
        }
        to = pos;
        var classRanges = parseClassRanges();
        if (!classRanges) {
          throw SyntaxError('classRanges');
        }
        from = atom.range[0];
        if (classRanges.type === 'empty') {
          return [createClassRange(atom, res, from, to)];
        }
        return [createClassRange(atom, res, from, to)].concat(classRanges);
      }

      res = parseNonemptyClassRangesNoDash();
      if (!res) {
        throw SyntaxError('nonEmptyClassRangesNoDash');
      }

      return [atom].concat(res);
    }

    function parseNonemptyClassRanges() {
      // NonemptyClassRanges ::
      //      ClassAtom
      //      ClassAtom NonemptyClassRangesNoDash
      //      ClassAtom - ClassAtom ClassRanges

      var atom = parseClassAtom();
      if (!atom) {
        throw SyntaxError('classAtom');
      }

      if (current(']')) {
        // ClassAtom
        return [atom];
      }

      // ClassAtom NonemptyClassRangesNoDash
      // ClassAtom - ClassAtom ClassRanges
      return parseHelperClassRanges(atom);
    }

    function parseNonemptyClassRangesNoDash() {
      // NonemptyClassRangesNoDash ::
      //      ClassAtom
      //      ClassAtomNoDash NonemptyClassRangesNoDash
      //      ClassAtomNoDash - ClassAtom ClassRanges

      var res = parseClassAtom();
      if (!res) {
        throw SyntaxError('classAtom');
      }
      if (current(']')) {
        //      ClassAtom
        return res;
      }

      // ClassAtomNoDash NonemptyClassRangesNoDash
      // ClassAtomNoDash - ClassAtom ClassRanges
      return parseHelperClassRanges(res);
    }

    function parseClassAtom() {
      // ClassAtom ::
      //      -
      //      ClassAtomNoDash
      if (match('-')) {
        return createCharacter('-');
      } else {
        return parseClassAtomNoDash();
      }
    }

    function parseClassAtomNoDash() {
      // ClassAtomNoDash ::
      //      SourceCharacter but not one of \ or ] or -
      //      \ ClassEscape

      var res;
      if (res = matchReg(/^[^\\\]-]/)) {
        return createCharacter(res[0]);
      } else if (match('\\')) {
        res = parseClassEscape();
        if (!res) {
          throw SyntaxError('classEscape');
        }

        return parseUnicodeSurrogatePairEscape(res);
      }
    }

    var backrefDenied = [];
    var closedCaptureCounter = 0;
    var firstIteration = true;
    var hasUnicodeFlag = (flags || "").indexOf("u") !== -1;
    var pos = 0;

    // Convert the input to a string and treat the empty string special.
    str = String(str);
    if (str === '') {
      str = '(?:)';
    }

    var result = parseDisjunction();

    if (result.range[1] !== str.length) {
      throw SyntaxError('Could not parse entire input - got stuck: ' + str);
    }

    // The spec requires to interpret the `\2` in `/\2()()/` as backreference.
    // As the parser collects the number of capture groups as the string is
    // parsed it is impossible to make these decisions at the point the `\2` is
    // handled. In case the local decision turns out to be wrongq after the
    // parsing has finished, the input string is parsed a second time with the
    // total count of capture groups set.
    //
    // SEE: https://github.com/jviereck/regjsparser/issues/70
    for (var i = 0; i < backrefDenied.length; i++) {
      if (backrefDenied[i] <= closedCaptureCounter) {
        // Parse the input a second time.
        pos = 0;
        firstIteration = false;
        return parseDisjunction();
      }
    }

    return result;
  };

  var regjsparser = {
    parse: parse
  };

  if (typeof module !== 'undefined' && module.exports) {
    module.exports = regjsparser;
  } else {
    window.regjsparser = regjsparser;
  }

}());

},{}],478:[function(require,module,exports){
var generate = require('regjsgen').generate;
var parse = require('regjsparser').parse;
var regenerate = require('regenerate');
var iuMappings = require('./data/iu-mappings.json');
var ESCAPE_SETS = require('./data/character-class-escape-sets.js');

function getCharacterClassEscapeSet(character) {
	if (unicode) {
		if (ignoreCase) {
			return ESCAPE_SETS.UNICODE_IGNORE_CASE[character];
		}
		return ESCAPE_SETS.UNICODE[character];
	}
	return ESCAPE_SETS.REGULAR[character];
}

var object = {};
var hasOwnProperty = object.hasOwnProperty;
function has(object, property) {
	return hasOwnProperty.call(object, property);
}

// Prepare a Regenerate set containing all code points, used for negative
// character classes (if any).
var UNICODE_SET = regenerate().addRange(0x0, 0x10FFFF);
// Without the `u` flag, the range stops at 0xFFFF.
// https://mths.be/es6#sec-pattern-semantics
var BMP_SET = regenerate().addRange(0x0, 0xFFFF);

// Prepare a Regenerate set containing all code points that are supposed to be
// matched by `/./u`. https://mths.be/es6#sec-atom
var DOT_SET_UNICODE = UNICODE_SET.clone() // all Unicode code points
	.remove(
		// minus `LineTerminator`s (https://mths.be/es6#sec-line-terminators):
		0x000A, // Line Feed <LF>
		0x000D, // Carriage Return <CR>
		0x2028, // Line Separator <LS>
		0x2029  // Paragraph Separator <PS>
	);
// Prepare a Regenerate set containing all code points that are supposed to be
// matched by `/./` (only BMP code points).
var DOT_SET = DOT_SET_UNICODE.clone()
	.intersection(BMP_SET);

// Add a range of code points + any case-folded code points in that range to a
// set.
regenerate.prototype.iuAddRange = function(min, max) {
	var $this = this;
	do {
		var folded = caseFold(min);
		if (folded) {
			$this.add(folded);
		}
	} while (++min <= max);
	return $this;
};

function assign(target, source) {
	for (var key in source) {
		// Note: `hasOwnProperty` is not needed here.
		target[key] = source[key];
	}
}

function update(item, pattern) {
	// TODO: Test if memoizing `pattern` here is worth the effort.
	if (!pattern) {
		return;
	}
	var tree = parse(pattern, '');
	switch (tree.type) {
		case 'characterClass':
		case 'group':
		case 'value':
			// No wrapping needed.
			break;
		default:
			// Wrap the pattern in a non-capturing group.
			tree = wrap(tree, pattern);
	}
	assign(item, tree);
}

function wrap(tree, pattern) {
	// Wrap the pattern in a non-capturing group.
	return {
		'type': 'group',
		'behavior': 'ignore',
		'body': [tree],
		'raw': '(?:' + pattern + ')'
	};
}

function caseFold(codePoint) {
	return has(iuMappings, codePoint) ? iuMappings[codePoint] : false;
}

var ignoreCase = false;
var unicode = false;
function processCharacterClass(characterClassItem) {
	var set = regenerate();
	var body = characterClassItem.body.forEach(function(item) {
		switch (item.type) {
			case 'value':
				set.add(item.codePoint);
				if (ignoreCase && unicode) {
					var folded = caseFold(item.codePoint);
					if (folded) {
						set.add(folded);
					}
				}
				break;
			case 'characterClassRange':
				var min = item.min.codePoint;
				var max = item.max.codePoint;
				set.addRange(min, max);
				if (ignoreCase && unicode) {
					set.iuAddRange(min, max);
				}
				break;
			case 'characterClassEscape':
				set.add(getCharacterClassEscapeSet(item.value));
				break;
			// The `default` clause is only here as a safeguard; it should never be
			// reached. Code coverage tools should ignore it.
			/* istanbul ignore next */
			default:
				throw Error('Unknown term type: ' + item.type);
		}
	});
	if (characterClassItem.negative) {
		set = (unicode ? UNICODE_SET : BMP_SET).clone().remove(set);
	}
	update(characterClassItem, set.toString());
	return characterClassItem;
}

function processTerm(item) {
	switch (item.type) {
		case 'dot':
			update(
				item,
				(unicode ? DOT_SET_UNICODE : DOT_SET).toString()
			);
			break;
		case 'characterClass':
			item = processCharacterClass(item);
			break;
		case 'characterClassEscape':
			update(
				item,
				getCharacterClassEscapeSet(item.value).toString()
			);
			break;
		case 'alternative':
		case 'disjunction':
		case 'group':
		case 'quantifier':
			item.body = item.body.map(processTerm);
			break;
		case 'value':
			var codePoint = item.codePoint;
			var set = regenerate(codePoint);
			if (ignoreCase && unicode) {
				var folded = caseFold(codePoint);
				if (folded) {
					set.add(folded);
				}
			}
			update(item, set.toString());
			break;
		case 'anchor':
		case 'empty':
		case 'group':
		case 'reference':
			// Nothing to do here.
			break;
		// The `default` clause is only here as a safeguard; it should never be
		// reached. Code coverage tools should ignore it.
		/* istanbul ignore next */
		default:
			throw Error('Unknown term type: ' + item.type);
	}
	return item;
};

module.exports = function(pattern, flags) {
	var tree = parse(pattern, flags);
	ignoreCase = flags ? flags.indexOf('i') > -1 : false;
	unicode = flags ? flags.indexOf('u') > -1 : false;
	assign(tree, processTerm(tree));
	return generate(tree);
};

},{"./data/character-class-escape-sets.js":473,"./data/iu-mappings.json":474,"regenerate":475,"regjsgen":476,"regjsparser":477}],479:[function(require,module,exports){
'use strict';
var isFinite = require('is-finite');

module.exports = function (str, n) {
	if (typeof str !== 'string') {
		throw new TypeError('Expected a string as the first argument');
	}

	if (n < 0 || !isFinite(n)) {
		throw new TypeError('Expected a finite positive number');
	}

	var ret = '';

	do {
		if (n & 1) {
			ret += str;
		}

		str += str;
	} while (n = n >> 1);

	return ret;
};

},{"is-finite":480}],480:[function(require,module,exports){
arguments[4][318][0].apply(exports,arguments)
},{"dup":318}],481:[function(require,module,exports){
'use strict';
module.exports = /^#!.*/;

},{}],482:[function(require,module,exports){
'use strict';
module.exports = function (str) {
	var isExtendedLengthPath = /^\\\\\?\\/.test(str);
	var hasNonAscii = /[^\x00-\x80]+/.test(str);

	if (isExtendedLengthPath || hasNonAscii) {
		return str;
	}

	return str.replace(/\\/g, '/');
};

},{}],483:[function(require,module,exports){
/*
 * Copyright 2009-2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE.txt or:
 * http://opensource.org/licenses/BSD-3-Clause
 */
exports.SourceMapGenerator = require('./source-map/source-map-generator').SourceMapGenerator;
exports.SourceMapConsumer = require('./source-map/source-map-consumer').SourceMapConsumer;
exports.SourceNode = require('./source-map/source-node').SourceNode;

},{"./source-map/source-map-consumer":489,"./source-map/source-map-generator":490,"./source-map/source-node":491}],484:[function(require,module,exports){
/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */
if (typeof define !== 'function') {
    var define = require('amdefine')(module, require);
}
define(function (require, exports, module) {

  var util = require('./util');

  /**
   * A data structure which is a combination of an array and a set. Adding a new
   * member is O(1), testing for membership is O(1), and finding the index of an
   * element is O(1). Removing elements from the set is not supported. Only
   * strings are supported for membership.
   */
  function ArraySet() {
    this._array = [];
    this._set = {};
  }

  /**
   * Static method for creating ArraySet instances from an existing array.
   */
  ArraySet.fromArray = function ArraySet_fromArray(aArray, aAllowDuplicates) {
    var set = new ArraySet();
    for (var i = 0, len = aArray.length; i < len; i++) {
      set.add(aArray[i], aAllowDuplicates);
    }
    return set;
  };

  /**
   * Add the given string to this set.
   *
   * @param String aStr
   */
  ArraySet.prototype.add = function ArraySet_add(aStr, aAllowDuplicates) {
    var isDuplicate = this.has(aStr);
    var idx = this._array.length;
    if (!isDuplicate || aAllowDuplicates) {
      this._array.push(aStr);
    }
    if (!isDuplicate) {
      this._set[util.toSetString(aStr)] = idx;
    }
  };

  /**
   * Is the given string a member of this set?
   *
   * @param String aStr
   */
  ArraySet.prototype.has = function ArraySet_has(aStr) {
    return Object.prototype.hasOwnProperty.call(this._set,
                                                util.toSetString(aStr));
  };

  /**
   * What is the index of the given string in the array?
   *
   * @param String aStr
   */
  ArraySet.prototype.indexOf = function ArraySet_indexOf(aStr) {
    if (this.has(aStr)) {
      return this._set[util.toSetString(aStr)];
    }
    throw new Error('"' + aStr + '" is not in the set.');
  };

  /**
   * What is the element at the given index?
   *
   * @param Number aIdx
   */
  ArraySet.prototype.at = function ArraySet_at(aIdx) {
    if (aIdx >= 0 && aIdx < this._array.length) {
      return this._array[aIdx];
    }
    throw new Error('No element indexed by ' + aIdx);
  };

  /**
   * Returns the array representation of this set (which has the proper indices
   * indicated by indexOf). Note that this is a copy of the internal array used
   * for storing the members so that no one can mess with internal state.
   */
  ArraySet.prototype.toArray = function ArraySet_toArray() {
    return this._array.slice();
  };

  exports.ArraySet = ArraySet;

});

},{"./util":492,"amdefine":493}],485:[function(require,module,exports){
/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 *
 * Based on the Base 64 VLQ implementation in Closure Compiler:
 * https://code.google.com/p/closure-compiler/source/browse/trunk/src/com/google/debugging/sourcemap/Base64VLQ.java
 *
 * Copyright 2011 The Closure Compiler Authors. All rights reserved.
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above
 *    copyright notice, this list of conditions and the following
 *    disclaimer in the documentation and/or other materials provided
 *    with the distribution.
 *  * Neither the name of Google Inc. nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
if (typeof define !== 'function') {
    var define = require('amdefine')(module, require);
}
define(function (require, exports, module) {

  var base64 = require('./base64');

  // A single base 64 digit can contain 6 bits of data. For the base 64 variable
  // length quantities we use in the source map spec, the first bit is the sign,
  // the next four bits are the actual value, and the 6th bit is the
  // continuation bit. The continuation bit tells us whether there are more
  // digits in this value following this digit.
  //
  //   Continuation
  //   |    Sign
  //   |    |
  //   V    V
  //   101011

  var VLQ_BASE_SHIFT = 5;

  // binary: 100000
  var VLQ_BASE = 1 << VLQ_BASE_SHIFT;

  // binary: 011111
  var VLQ_BASE_MASK = VLQ_BASE - 1;

  // binary: 100000
  var VLQ_CONTINUATION_BIT = VLQ_BASE;

  /**
   * Converts from a two-complement value to a value where the sign bit is
   * placed in the least significant bit.  For example, as decimals:
   *   1 becomes 2 (10 binary), -1 becomes 3 (11 binary)
   *   2 becomes 4 (100 binary), -2 becomes 5 (101 binary)
   */
  function toVLQSigned(aValue) {
    return aValue < 0
      ? ((-aValue) << 1) + 1
      : (aValue << 1) + 0;
  }

  /**
   * Converts to a two-complement value from a value where the sign bit is
   * placed in the least significant bit.  For example, as decimals:
   *   2 (10 binary) becomes 1, 3 (11 binary) becomes -1
   *   4 (100 binary) becomes 2, 5 (101 binary) becomes -2
   */
  function fromVLQSigned(aValue) {
    var isNegative = (aValue & 1) === 1;
    var shifted = aValue >> 1;
    return isNegative
      ? -shifted
      : shifted;
  }

  /**
   * Returns the base 64 VLQ encoded value.
   */
  exports.encode = function base64VLQ_encode(aValue) {
    var encoded = "";
    var digit;

    var vlq = toVLQSigned(aValue);

    do {
      digit = vlq & VLQ_BASE_MASK;
      vlq >>>= VLQ_BASE_SHIFT;
      if (vlq > 0) {
        // There are still more digits in this value, so we must make sure the
        // continuation bit is marked.
        digit |= VLQ_CONTINUATION_BIT;
      }
      encoded += base64.encode(digit);
    } while (vlq > 0);

    return encoded;
  };

  /**
   * Decodes the next base 64 VLQ value from the given string and returns the
   * value and the rest of the string via the out parameter.
   */
  exports.decode = function base64VLQ_decode(aStr, aIndex, aOutParam) {
    var strLen = aStr.length;
    var result = 0;
    var shift = 0;
    var continuation, digit;

    do {
      if (aIndex >= strLen) {
        throw new Error("Expected more digits in base 64 VLQ value.");
      }
      digit = base64.decode(aStr.charAt(aIndex++));
      continuation = !!(digit & VLQ_CONTINUATION_BIT);
      digit &= VLQ_BASE_MASK;
      result = result + (digit << shift);
      shift += VLQ_BASE_SHIFT;
    } while (continuation);

    aOutParam.value = fromVLQSigned(result);
    aOutParam.rest = aIndex;
  };

});

},{"./base64":486,"amdefine":493}],486:[function(require,module,exports){
/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */
if (typeof define !== 'function') {
    var define = require('amdefine')(module, require);
}
define(function (require, exports, module) {

  var charToIntMap = {};
  var intToCharMap = {};

  'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
    .split('')
    .forEach(function (ch, index) {
      charToIntMap[ch] = index;
      intToCharMap[index] = ch;
    });

  /**
   * Encode an integer in the range of 0 to 63 to a single base 64 digit.
   */
  exports.encode = function base64_encode(aNumber) {
    if (aNumber in intToCharMap) {
      return intToCharMap[aNumber];
    }
    throw new TypeError("Must be between 0 and 63: " + aNumber);
  };

  /**
   * Decode a single base 64 digit to an integer.
   */
  exports.decode = function base64_decode(aChar) {
    if (aChar in charToIntMap) {
      return charToIntMap[aChar];
    }
    throw new TypeError("Not a valid base 64 digit: " + aChar);
  };

});

},{"amdefine":493}],487:[function(require,module,exports){
/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */
if (typeof define !== 'function') {
    var define = require('amdefine')(module, require);
}
define(function (require, exports, module) {

  exports.GREATEST_LOWER_BOUND = 1;
  exports.LEAST_UPPER_BOUND = 2;

  /**
   * Recursive implementation of binary search.
   *
   * @param aLow Indices here and lower do not contain the needle.
   * @param aHigh Indices here and higher do not contain the needle.
   * @param aNeedle The element being searched for.
   * @param aHaystack The non-empty array being searched.
   * @param aCompare Function which takes two elements and returns -1, 0, or 1.
   * @param aBias Either 'binarySearch.GREATEST_LOWER_BOUND' or
   *     'binarySearch.LEAST_UPPER_BOUND'. Specifies whether to return the
   *     closest element that is smaller than or greater than the one we are
   *     searching for, respectively, if the exact element cannot be found.
   */
  function recursiveSearch(aLow, aHigh, aNeedle, aHaystack, aCompare, aBias) {
    // This function terminates when one of the following is true:
    //
    //   1. We find the exact element we are looking for.
    //
    //   2. We did not find the exact element, but we can return the index of
    //      the next-closest element.
    //
    //   3. We did not find the exact element, and there is no next-closest
    //      element than the one we are searching for, so we return -1.
    var mid = Math.floor((aHigh - aLow) / 2) + aLow;
    var cmp = aCompare(aNeedle, aHaystack[mid], true);
    if (cmp === 0) {
      // Found the element we are looking for.
      return mid;
    }
    else if (cmp > 0) {
      // Our needle is greater than aHaystack[mid].
      if (aHigh - mid > 1) {
        // The element is in the upper half.
        return recursiveSearch(mid, aHigh, aNeedle, aHaystack, aCompare, aBias);
      }

      // The exact needle element was not found in this haystack. Determine if
      // we are in termination case (3) or (2) and return the appropriate thing.
      if (aBias == exports.LEAST_UPPER_BOUND) {
        return aHigh < aHaystack.length ? aHigh : -1;
      } else {
        return mid;
      }
    }
    else {
      // Our needle is less than aHaystack[mid].
      if (mid - aLow > 1) {
        // The element is in the lower half.
        return recursiveSearch(aLow, mid, aNeedle, aHaystack, aCompare, aBias);
      }

      // we are in termination case (3) or (2) and return the appropriate thing.
      if (aBias == exports.LEAST_UPPER_BOUND) {
        return mid;
      } else {
        return aLow < 0 ? -1 : aLow;
      }
    }
  }

  /**
   * This is an implementation of binary search which will always try and return
   * the index of the closest element if there is no exact hit. This is because
   * mappings between original and generated line/col pairs are single points,
   * and there is an implicit region between each of them, so a miss just means
   * that you aren't on the very start of a region.
   *
   * @param aNeedle The element you are looking for.
   * @param aHaystack The array that is being searched.
   * @param aCompare A function which takes the needle and an element in the
   *     array and returns -1, 0, or 1 depending on whether the needle is less
   *     than, equal to, or greater than the element, respectively.
   * @param aBias Either 'binarySearch.GREATEST_LOWER_BOUND' or
   *     'binarySearch.LEAST_UPPER_BOUND'. Specifies whether to return the
   *     closest element that is smaller than or greater than the one we are
   *     searching for, respectively, if the exact element cannot be found.
   *     Defaults to 'binarySearch.GREATEST_LOWER_BOUND'.
   */
  exports.search = function search(aNeedle, aHaystack, aCompare, aBias) {
    if (aHaystack.length === 0) {
      return -1;
    }

    var index = recursiveSearch(-1, aHaystack.length, aNeedle, aHaystack,
                                aCompare, aBias || exports.GREATEST_LOWER_BOUND);
    if (index < 0) {
      return -1;
    }

    // We have found either the exact element, or the next-closest element than
    // the one we are searching for. However, there may be more than one such
    // element. Make sure we always return the smallest of these.
    while (index - 1 >= 0) {
      if (aCompare(aHaystack[index], aHaystack[index - 1], true) !== 0) {
        break;
      }
      --index;
    }

    return index;
  };

});

},{"amdefine":493}],488:[function(require,module,exports){
/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2014 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */
if (typeof define !== 'function') {
    var define = require('amdefine')(module, require);
}
define(function (require, exports, module) {

  var util = require('./util');

  /**
   * Determine whether mappingB is after mappingA with respect to generated
   * position.
   */
  function generatedPositionAfter(mappingA, mappingB) {
    // Optimized for most common case
    var lineA = mappingA.generatedLine;
    var lineB = mappingB.generatedLine;
    var columnA = mappingA.generatedColumn;
    var columnB = mappingB.generatedColumn;
    return lineB > lineA || lineB == lineA && columnB >= columnA ||
           util.compareByGeneratedPositions(mappingA, mappingB) <= 0;
  }

  /**
   * A data structure to provide a sorted view of accumulated mappings in a
   * performance conscious manner. It trades a neglibable overhead in general
   * case for a large speedup in case of mappings being added in order.
   */
  function MappingList() {
    this._array = [];
    this._sorted = true;
    // Serves as infimum
    this._last = {generatedLine: -1, generatedColumn: 0};
  }

  /**
   * Iterate through internal items. This method takes the same arguments that
   * `Array.prototype.forEach` takes.
   *
   * NOTE: The order of the mappings is NOT guaranteed.
   */
  MappingList.prototype.unsortedForEach =
    function MappingList_forEach(aCallback, aThisArg) {
      this._array.forEach(aCallback, aThisArg);
    };

  /**
   * Add the given source mapping.
   *
   * @param Object aMapping
   */
  MappingList.prototype.add = function MappingList_add(aMapping) {
    var mapping;
    if (generatedPositionAfter(this._last, aMapping)) {
      this._last = aMapping;
      this._array.push(aMapping);
    } else {
      this._sorted = false;
      this._array.push(aMapping);
    }
  };

  /**
   * Returns the flat, sorted array of mappings. The mappings are sorted by
   * generated position.
   *
   * WARNING: This method returns internal data without copying, for
   * performance. The return value must NOT be mutated, and should be treated as
   * an immutable borrow. If you want to take ownership, you must make your own
   * copy.
   */
  MappingList.prototype.toArray = function MappingList_toArray() {
    if (!this._sorted) {
      this._array.sort(util.compareByGeneratedPositions);
      this._sorted = true;
    }
    return this._array;
  };

  exports.MappingList = MappingList;

});

},{"./util":492,"amdefine":493}],489:[function(require,module,exports){
/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */
if (typeof define !== 'function') {
    var define = require('amdefine')(module, require);
}
define(function (require, exports, module) {

  var util = require('./util');
  var binarySearch = require('./binary-search');
  var ArraySet = require('./array-set').ArraySet;
  var base64VLQ = require('./base64-vlq');

  function SourceMapConsumer(aSourceMap) {
    var sourceMap = aSourceMap;
    if (typeof aSourceMap === 'string') {
      sourceMap = JSON.parse(aSourceMap.replace(/^\)\]\}'/, ''));
    }

    return sourceMap.sections != null
      ? new IndexedSourceMapConsumer(sourceMap)
      : new BasicSourceMapConsumer(sourceMap);
  }

  SourceMapConsumer.fromSourceMap = function(aSourceMap) {
    return BasicSourceMapConsumer.fromSourceMap(aSourceMap);
  }

  /**
   * The version of the source mapping spec that we are consuming.
   */
  SourceMapConsumer.prototype._version = 3;

  // `__generatedMappings` and `__originalMappings` are arrays that hold the
  // parsed mapping coordinates from the source map's "mappings" attribute. They
  // are lazily instantiated, accessed via the `_generatedMappings` and
  // `_originalMappings` getters respectively, and we only parse the mappings
  // and create these arrays once queried for a source location. We jump through
  // these hoops because there can be many thousands of mappings, and parsing
  // them is expensive, so we only want to do it if we must.
  //
  // Each object in the arrays is of the form:
  //
  //     {
  //       generatedLine: The line number in the generated code,
  //       generatedColumn: The column number in the generated code,
  //       source: The path to the original source file that generated this
  //               chunk of code,
  //       originalLine: The line number in the original source that
  //                     corresponds to this chunk of generated code,
  //       originalColumn: The column number in the original source that
  //                       corresponds to this chunk of generated code,
  //       name: The name of the original symbol which generated this chunk of
  //             code.
  //     }
  //
  // All properties except for `generatedLine` and `generatedColumn` can be
  // `null`.
  //
  // `_generatedMappings` is ordered by the generated positions.
  //
  // `_originalMappings` is ordered by the original positions.

  SourceMapConsumer.prototype.__generatedMappings = null;
  Object.defineProperty(SourceMapConsumer.prototype, '_generatedMappings', {
    get: function () {
      if (!this.__generatedMappings) {
        this.__generatedMappings = [];
        this.__originalMappings = [];
        this._parseMappings(this._mappings, this.sourceRoot);
      }

      return this.__generatedMappings;
    }
  });

  SourceMapConsumer.prototype.__originalMappings = null;
  Object.defineProperty(SourceMapConsumer.prototype, '_originalMappings', {
    get: function () {
      if (!this.__originalMappings) {
        this.__generatedMappings = [];
        this.__originalMappings = [];
        this._parseMappings(this._mappings, this.sourceRoot);
      }

      return this.__originalMappings;
    }
  });

  SourceMapConsumer.prototype._nextCharIsMappingSeparator =
    function SourceMapConsumer_nextCharIsMappingSeparator(aStr, index) {
      var c = aStr.charAt(index);
      return c === ";" || c === ",";
    };

  /**
   * Parse the mappings in a string in to a data structure which we can easily
   * query (the ordered arrays in the `this.__generatedMappings` and
   * `this.__originalMappings` properties).
   */
  SourceMapConsumer.prototype._parseMappings =
    function SourceMapConsumer_parseMappings(aStr, aSourceRoot) {
      throw new Error("Subclasses must implement _parseMappings");
    };

  SourceMapConsumer.GENERATED_ORDER = 1;
  SourceMapConsumer.ORIGINAL_ORDER = 2;

  SourceMapConsumer.GREATEST_LOWER_BOUND = 1;
  SourceMapConsumer.LEAST_UPPER_BOUND = 2;

  /**
   * Iterate over each mapping between an original source/line/column and a
   * generated line/column in this source map.
   *
   * @param Function aCallback
   *        The function that is called with each mapping.
   * @param Object aContext
   *        Optional. If specified, this object will be the value of `this` every
   *        time that `aCallback` is called.
   * @param aOrder
   *        Either `SourceMapConsumer.GENERATED_ORDER` or
   *        `SourceMapConsumer.ORIGINAL_ORDER`. Specifies whether you want to
   *        iterate over the mappings sorted by the generated file's line/column
   *        order or the original's source/line/column order, respectively. Defaults to
   *        `SourceMapConsumer.GENERATED_ORDER`.
   */
  SourceMapConsumer.prototype.eachMapping =
    function SourceMapConsumer_eachMapping(aCallback, aContext, aOrder) {
      var context = aContext || null;
      var order = aOrder || SourceMapConsumer.GENERATED_ORDER;

      var mappings;
      switch (order) {
      case SourceMapConsumer.GENERATED_ORDER:
        mappings = this._generatedMappings;
        break;
      case SourceMapConsumer.ORIGINAL_ORDER:
        mappings = this._originalMappings;
        break;
      default:
        throw new Error("Unknown order of iteration.");
      }

      var sourceRoot = this.sourceRoot;
      mappings.map(function (mapping) {
        var source = mapping.source;
        if (source != null && sourceRoot != null) {
          source = util.join(sourceRoot, source);
        }
        return {
          source: source,
          generatedLine: mapping.generatedLine,
          generatedColumn: mapping.generatedColumn,
          originalLine: mapping.originalLine,
          originalColumn: mapping.originalColumn,
          name: mapping.name
        };
      }).forEach(aCallback, context);
    };

  /**
   * Returns all generated line and column information for the original source,
   * line, and column provided. If no column is provided, returns all mappings
   * corresponding to a single line. Otherwise, returns all mappings
   * corresponding to a single line and column.
   *
   * The only argument is an object with the following properties:
   *
   *   - source: The filename of the original source.
   *   - line: The line number in the original source.
   *   - column: Optional. the column number in the original source.
   *
   * and an array of objects is returned, each with the following properties:
   *
   *   - line: The line number in the generated source, or null.
   *   - column: The column number in the generated source, or null.
   */
  SourceMapConsumer.prototype.allGeneratedPositionsFor =
    function SourceMapConsumer_allGeneratedPositionsFor(aArgs) {
      // When there is no exact match, BasicSourceMapConsumer.prototype._findMapping
      // returns the index of the closest mapping less than the needle. By
      // setting needle.originalColumn to 0, we thus find the last mapping for
      // the given line, provided such a mapping exists.
      var needle = {
        source: util.getArg(aArgs, 'source'),
        originalLine: util.getArg(aArgs, 'line'),
        originalColumn: util.getArg(aArgs, 'column', 0)
      };

      if (this.sourceRoot != null) {
        needle.source = util.relative(this.sourceRoot, needle.source);
      }

      var mappings = [];

      var index = this._findMapping(needle,
                                    this._originalMappings,
                                    "originalLine",
                                    "originalColumn",
                                    util.compareByOriginalPositions,
                                    binarySearch.LEAST_UPPER_BOUND);
      if (index >= 0) {
        var mapping = this._originalMappings[index];
        var originalLine = mapping.originalLine;
        var originalColumn = mapping.originalColumn;

        // Iterate until either we run out of mappings, or we run into
        // a mapping for a different line. Since mappings are sorted, this is
        // guaranteed to find all mappings for the line we are searching for.
        while (mapping && mapping.originalLine === originalLine &&
               (aArgs.column === undefined ||
                mapping.originalColumn === originalColumn)) {
          mappings.push({
            line: util.getArg(mapping, 'generatedLine', null),
            column: util.getArg(mapping, 'generatedColumn', null),
            lastColumn: util.getArg(mapping, 'lastGeneratedColumn', null)
          });

          mapping = this._originalMappings[++index];
        }
      }

      return mappings;
    };

  exports.SourceMapConsumer = SourceMapConsumer;

  /**
   * A BasicSourceMapConsumer instance represents a parsed source map which we can
   * query for information about the original file positions by giving it a file
   * position in the generated source.
   *
   * The only parameter is the raw source map (either as a JSON string, or
   * already parsed to an object). According to the spec, source maps have the
   * following attributes:
   *
   *   - version: Which version of the source map spec this map is following.
   *   - sources: An array of URLs to the original source files.
   *   - names: An array of identifiers which can be referrenced by individual mappings.
   *   - sourceRoot: Optional. The URL root from which all sources are relative.
   *   - sourcesContent: Optional. An array of contents of the original source files.
   *   - mappings: A string of base64 VLQs which contain the actual mappings.
   *   - file: Optional. The generated file this source map is associated with.
   *
   * Here is an example source map, taken from the source map spec[0]:
   *
   *     {
   *       version : 3,
   *       file: "out.js",
   *       sourceRoot : "",
   *       sources: ["foo.js", "bar.js"],
   *       names: ["src", "maps", "are", "fun"],
   *       mappings: "AA,AB;;ABCDE;"
   *     }
   *
   * [0]: https://docs.google.com/document/d/1U1RGAehQwRypUTovF1KRlpiOFze0b-_2gc6fAH0KY0k/edit?pli=1#
   */
  function BasicSourceMapConsumer(aSourceMap) {
    var sourceMap = aSourceMap;
    if (typeof aSourceMap === 'string') {
      sourceMap = JSON.parse(aSourceMap.replace(/^\)\]\}'/, ''));
    }

    var version = util.getArg(sourceMap, 'version');
    var sources = util.getArg(sourceMap, 'sources');
    // Sass 3.3 leaves out the 'names' array, so we deviate from the spec (which
    // requires the array) to play nice here.
    var names = util.getArg(sourceMap, 'names', []);
    var sourceRoot = util.getArg(sourceMap, 'sourceRoot', null);
    var sourcesContent = util.getArg(sourceMap, 'sourcesContent', null);
    var mappings = util.getArg(sourceMap, 'mappings');
    var file = util.getArg(sourceMap, 'file', null);

    // Once again, Sass deviates from the spec and supplies the version as a
    // string rather than a number, so we use loose equality checking here.
    if (version != this._version) {
      throw new Error('Unsupported version: ' + version);
    }

    // Some source maps produce relative source paths like "./foo.js" instead of
    // "foo.js".  Normalize these first so that future comparisons will succeed.
    // See bugzil.la/1090768.
    sources = sources.map(util.normalize);

    // Pass `true` below to allow duplicate names and sources. While source maps
    // are intended to be compressed and deduplicated, the TypeScript compiler
    // sometimes generates source maps with duplicates in them. See Github issue
    // #72 and bugzil.la/889492.
    this._names = ArraySet.fromArray(names, true);
    this._sources = ArraySet.fromArray(sources, true);

    this.sourceRoot = sourceRoot;
    this.sourcesContent = sourcesContent;
    this._mappings = mappings;
    this.file = file;
  }

  BasicSourceMapConsumer.prototype = Object.create(SourceMapConsumer.prototype);
  BasicSourceMapConsumer.prototype.consumer = SourceMapConsumer;

  /**
   * Create a BasicSourceMapConsumer from a SourceMapGenerator.
   *
   * @param SourceMapGenerator aSourceMap
   *        The source map that will be consumed.
   * @returns BasicSourceMapConsumer
   */
  BasicSourceMapConsumer.fromSourceMap =
    function SourceMapConsumer_fromSourceMap(aSourceMap) {
      var smc = Object.create(BasicSourceMapConsumer.prototype);

      smc._names = ArraySet.fromArray(aSourceMap._names.toArray(), true);
      smc._sources = ArraySet.fromArray(aSourceMap._sources.toArray(), true);
      smc.sourceRoot = aSourceMap._sourceRoot;
      smc.sourcesContent = aSourceMap._generateSourcesContent(smc._sources.toArray(),
                                                              smc.sourceRoot);
      smc.file = aSourceMap._file;

      smc.__generatedMappings = aSourceMap._mappings.toArray().slice();
      smc.__originalMappings = aSourceMap._mappings.toArray().slice()
        .sort(util.compareByOriginalPositions);

      return smc;
    };

  /**
   * The version of the source mapping spec that we are consuming.
   */
  BasicSourceMapConsumer.prototype._version = 3;

  /**
   * The list of original sources.
   */
  Object.defineProperty(BasicSourceMapConsumer.prototype, 'sources', {
    get: function () {
      return this._sources.toArray().map(function (s) {
        return this.sourceRoot != null ? util.join(this.sourceRoot, s) : s;
      }, this);
    }
  });

  /**
   * Parse the mappings in a string in to a data structure which we can easily
   * query (the ordered arrays in the `this.__generatedMappings` and
   * `this.__originalMappings` properties).
   */
  BasicSourceMapConsumer.prototype._parseMappings =
    function SourceMapConsumer_parseMappings(aStr, aSourceRoot) {
      var generatedLine = 1;
      var previousGeneratedColumn = 0;
      var previousOriginalLine = 0;
      var previousOriginalColumn = 0;
      var previousSource = 0;
      var previousName = 0;
      var length = aStr.length;
      var index = 0;
      var cachedValues = {};
      var temp = {};
      var mapping, str, values, end, value;

      while (index < length) {
        if (aStr.charAt(index) === ';') {
          generatedLine++;
          ++index;
          previousGeneratedColumn = 0;
        }
        else if (aStr.charAt(index) === ',') {
          ++index;
        }
        else {
          mapping = {};
          mapping.generatedLine = generatedLine;

          // Because each offset is encoded relative to the previous one,
          // many segments often have the same encoding. We can exploit this
          // fact by caching the parsed variable length fields of each segment,
          // allowing us to avoid a second parse if we encounter the same
          // segment again.
          for (end = index; end < length; ++end) {
            if (this._nextCharIsMappingSeparator(aStr, end)) {
              break;
            }
          }
          str = aStr.slice(index, end);

          values = cachedValues[str];
          if (values) {
            index += str.length;
          } else {
            values = [];
            while (index < end) {
              base64VLQ.decode(aStr, index, temp);
              value = temp.value;
              index = temp.rest;
              values.push(value);
            }
            cachedValues[str] = values;
          }

          // Generated column.
          mapping.generatedColumn = previousGeneratedColumn + values[0];
          previousGeneratedColumn = mapping.generatedColumn;

          if (values.length > 1) {
            // Original source.
            mapping.source = this._sources.at(previousSource + values[1]);
            previousSource += values[1];
            if (values.length === 2) {
              throw new Error('Found a source, but no line and column');
            }

            // Original line.
            mapping.originalLine = previousOriginalLine + values[2];
            previousOriginalLine = mapping.originalLine;
            // Lines are stored 0-based
            mapping.originalLine += 1;
            if (values.length === 3) {
              throw new Error('Found a source and line, but no column');
            }

            // Original column.
            mapping.originalColumn = previousOriginalColumn + values[3];
            previousOriginalColumn = mapping.originalColumn;

            if (values.length > 4) {
              // Original name.
              mapping.name = this._names.at(previousName + values[4]);
              previousName += values[4];
            }
          }

          this.__generatedMappings.push(mapping);
          if (typeof mapping.originalLine === 'number') {
            this.__originalMappings.push(mapping);
          }
        }
      }

      this.__generatedMappings.sort(util.compareByGeneratedPositions);
      this.__originalMappings.sort(util.compareByOriginalPositions);
    };

  /**
   * Find the mapping that best matches the hypothetical "needle" mapping that
   * we are searching for in the given "haystack" of mappings.
   */
  BasicSourceMapConsumer.prototype._findMapping =
    function SourceMapConsumer_findMapping(aNeedle, aMappings, aLineName,
                                           aColumnName, aComparator, aBias) {
      // To return the position we are searching for, we must first find the
      // mapping for the given position and then return the opposite position it
      // points to. Because the mappings are sorted, we can use binary search to
      // find the best mapping.

      if (aNeedle[aLineName] <= 0) {
        throw new TypeError('Line must be greater than or equal to 1, got '
                            + aNeedle[aLineName]);
      }
      if (aNeedle[aColumnName] < 0) {
        throw new TypeError('Column must be greater than or equal to 0, got '
                            + aNeedle[aColumnName]);
      }

      return binarySearch.search(aNeedle, aMappings, aComparator, aBias);
    };

  /**
   * Compute the last column for each generated mapping. The last column is
   * inclusive.
   */
  BasicSourceMapConsumer.prototype.computeColumnSpans =
    function SourceMapConsumer_computeColumnSpans() {
      for (var index = 0; index < this._generatedMappings.length; ++index) {
        var mapping = this._generatedMappings[index];

        // Mappings do not contain a field for the last generated columnt. We
        // can come up with an optimistic estimate, however, by assuming that
        // mappings are contiguous (i.e. given two consecutive mappings, the
        // first mapping ends where the second one starts).
        if (index + 1 < this._generatedMappings.length) {
          var nextMapping = this._generatedMappings[index + 1];

          if (mapping.generatedLine === nextMapping.generatedLine) {
            mapping.lastGeneratedColumn = nextMapping.generatedColumn - 1;
            continue;
          }
        }

        // The last mapping for each line spans the entire line.
        mapping.lastGeneratedColumn = Infinity;
      }
    };

  /**
   * Returns the original source, line, and column information for the generated
   * source's line and column positions provided. The only argument is an object
   * with the following properties:
   *
   *   - line: The line number in the generated source.
   *   - column: The column number in the generated source.
   *   - bias: Either 'SourceMapConsumer.GREATEST_LOWER_BOUND' or
   *     'SourceMapConsumer.LEAST_UPPER_BOUND'. Specifies whether to return the
   *     closest element that is smaller than or greater than the one we are
   *     searching for, respectively, if the exact element cannot be found.
   *     Defaults to 'SourceMapConsumer.GREATEST_LOWER_BOUND'.
   *
   * and an object is returned with the following properties:
   *
   *   - source: The original source file, or null.
   *   - line: The line number in the original source, or null.
   *   - column: The column number in the original source, or null.
   *   - name: The original identifier, or null.
   */
  BasicSourceMapConsumer.prototype.originalPositionFor =
    function SourceMapConsumer_originalPositionFor(aArgs) {
      var needle = {
        generatedLine: util.getArg(aArgs, 'line'),
        generatedColumn: util.getArg(aArgs, 'column')
      };

      var index = this._findMapping(
        needle,
        this._generatedMappings,
        "generatedLine",
        "generatedColumn",
        util.compareByGeneratedPositions,
        util.getArg(aArgs, 'bias', SourceMapConsumer.GREATEST_LOWER_BOUND)
      );

      if (index >= 0) {
        var mapping = this._generatedMappings[index];

        if (mapping.generatedLine === needle.generatedLine) {
          var source = util.getArg(mapping, 'source', null);
          if (source != null && this.sourceRoot != null) {
            source = util.join(this.sourceRoot, source);
          }
          return {
            source: source,
            line: util.getArg(mapping, 'originalLine', null),
            column: util.getArg(mapping, 'originalColumn', null),
            name: util.getArg(mapping, 'name', null)
          };
        }
      }

      return {
        source: null,
        line: null,
        column: null,
        name: null
      };
    };

  /**
   * Returns the original source content. The only argument is the url of the
   * original source file. Returns null if no original source content is
   * availible.
   */
  BasicSourceMapConsumer.prototype.sourceContentFor =
    function SourceMapConsumer_sourceContentFor(aSource, nullOnMissing) {
      if (!this.sourcesContent) {
        return null;
      }

      if (this.sourceRoot != null) {
        aSource = util.relative(this.sourceRoot, aSource);
      }

      if (this._sources.has(aSource)) {
        return this.sourcesContent[this._sources.indexOf(aSource)];
      }

      var url;
      if (this.sourceRoot != null
          && (url = util.urlParse(this.sourceRoot))) {
        // XXX: file:// URIs and absolute paths lead to unexpected behavior for
        // many users. We can help them out when they expect file:// URIs to
        // behave like it would if they were running a local HTTP server. See
        // https://bugzilla.mozilla.org/show_bug.cgi?id=885597.
        var fileUriAbsPath = aSource.replace(/^file:\/\//, "");
        if (url.scheme == "file"
            && this._sources.has(fileUriAbsPath)) {
          return this.sourcesContent[this._sources.indexOf(fileUriAbsPath)]
        }

        if ((!url.path || url.path == "/")
            && this._sources.has("/" + aSource)) {
          return this.sourcesContent[this._sources.indexOf("/" + aSource)];
        }
      }

      // This function is used recursively from
      // IndexedSourceMapConsumer.prototype.sourceContentFor. In that case, we
      // don't want to throw if we can't find the source - we just want to
      // return null, so we provide a flag to exit gracefully.
      if (nullOnMissing) {
        return null;
      }
      else {
        throw new Error('"' + aSource + '" is not in the SourceMap.');
      }
    };

  /**
   * Returns the generated line and column information for the original source,
   * line, and column positions provided. The only argument is an object with
   * the following properties:
   *
   *   - source: The filename of the original source.
   *   - line: The line number in the original source.
   *   - column: The column number in the original source.
   *   - bias: Either 'SourceMapConsumer.GREATEST_LOWER_BOUND' or
   *     'SourceMapConsumer.LEAST_UPPER_BOUND'. Specifies whether to return the
   *     closest element that is smaller than or greater than the one we are
   *     searching for, respectively, if the exact element cannot be found.
   *     Defaults to 'SourceMapConsumer.GREATEST_LOWER_BOUND'.
   *
   * and an object is returned with the following properties:
   *
   *   - line: The line number in the generated source, or null.
   *   - column: The column number in the generated source, or null.
   */
  BasicSourceMapConsumer.prototype.generatedPositionFor =
    function SourceMapConsumer_generatedPositionFor(aArgs) {
      var needle = {
        source: util.getArg(aArgs, 'source'),
        originalLine: util.getArg(aArgs, 'line'),
        originalColumn: util.getArg(aArgs, 'column')
      };

      if (this.sourceRoot != null) {
        needle.source = util.relative(this.sourceRoot, needle.source);
      }

      var index = this._findMapping(
        needle,
        this._originalMappings,
        "originalLine",
        "originalColumn",
        util.compareByOriginalPositions,
        util.getArg(aArgs, 'bias', SourceMapConsumer.GREATEST_LOWER_BOUND)
      );

      if (index >= 0) {
        var mapping = this._originalMappings[index];

        if (mapping.source === needle.source) {
          return {
            line: util.getArg(mapping, 'generatedLine', null),
            column: util.getArg(mapping, 'generatedColumn', null),
            lastColumn: util.getArg(mapping, 'lastGeneratedColumn', null)
          };
        }
      }

      return {
        line: null,
        column: null,
        lastColumn: null
      };
    };

  exports.BasicSourceMapConsumer = BasicSourceMapConsumer;

  /**
   * An IndexedSourceMapConsumer instance represents a parsed source map which
   * we can query for information. It differs from BasicSourceMapConsumer in
   * that it takes "indexed" source maps (i.e. ones with a "sections" field) as
   * input.
   *
   * The only parameter is a raw source map (either as a JSON string, or already
   * parsed to an object). According to the spec for indexed source maps, they
   * have the following attributes:
   *
   *   - version: Which version of the source map spec this map is following.
   *   - file: Optional. The generated file this source map is associated with.
   *   - sections: A list of section definitions.
   *
   * Each value under the "sections" field has two fields:
   *   - offset: The offset into the original specified at which this section
   *       begins to apply, defined as an object with a "line" and "column"
   *       field.
   *   - map: A source map definition. This source map could also be indexed,
   *       but doesn't have to be.
   *
   * Instead of the "map" field, it's also possible to have a "url" field
   * specifying a URL to retrieve a source map from, but that's currently
   * unsupported.
   *
   * Here's an example source map, taken from the source map spec[0], but
   * modified to omit a section which uses the "url" field.
   *
   *  {
   *    version : 3,
   *    file: "app.js",
   *    sections: [{
   *      offset: {line:100, column:10},
   *      map: {
   *        version : 3,
   *        file: "section.js",
   *        sources: ["foo.js", "bar.js"],
   *        names: ["src", "maps", "are", "fun"],
   *        mappings: "AAAA,E;;ABCDE;"
   *      }
   *    }],
   *  }
   *
   * [0]: https://docs.google.com/document/d/1U1RGAehQwRypUTovF1KRlpiOFze0b-_2gc6fAH0KY0k/edit#heading=h.535es3xeprgt
   */
  function IndexedSourceMapConsumer(aSourceMap) {
    var sourceMap = aSourceMap;
    if (typeof aSourceMap === 'string') {
      sourceMap = JSON.parse(aSourceMap.replace(/^\)\]\}'/, ''));
    }

    var version = util.getArg(sourceMap, 'version');
    var sections = util.getArg(sourceMap, 'sections');

    if (version != this._version) {
      throw new Error('Unsupported version: ' + version);
    }

    var lastOffset = {
      line: -1,
      column: 0
    };
    this._sections = sections.map(function (s) {
      if (s.url) {
        // The url field will require support for asynchronicity.
        // See https://github.com/mozilla/source-map/issues/16
        throw new Error('Support for url field in sections not implemented.');
      }
      var offset = util.getArg(s, 'offset');
      var offsetLine = util.getArg(offset, 'line');
      var offsetColumn = util.getArg(offset, 'column');

      if (offsetLine < lastOffset.line ||
          (offsetLine === lastOffset.line && offsetColumn < lastOffset.column)) {
        throw new Error('Section offsets must be ordered and non-overlapping.');
      }
      lastOffset = offset;

      return {
        generatedOffset: {
          // The offset fields are 0-based, but we use 1-based indices when
          // encoding/decoding from VLQ.
          generatedLine: offsetLine + 1,
          generatedColumn: offsetColumn + 1
        },
        consumer: new SourceMapConsumer(util.getArg(s, 'map'))
      }
    });
  }

  IndexedSourceMapConsumer.prototype = Object.create(SourceMapConsumer.prototype);
  IndexedSourceMapConsumer.prototype.constructor = SourceMapConsumer;

  /**
   * The version of the source mapping spec that we are consuming.
   */
  IndexedSourceMapConsumer.prototype._version = 3;

  /**
   * The list of original sources.
   */
  Object.defineProperty(IndexedSourceMapConsumer.prototype, 'sources', {
    get: function () {
      var sources = [];
      for (var i = 0; i < this._sections.length; i++) {
        for (var j = 0; j < this._sections[i].consumer.sources.length; j++) {
          sources.push(this._sections[i].consumer.sources[j]);
        }
      };
      return sources;
    }
  });

  /**
   * Returns the original source, line, and column information for the generated
   * source's line and column positions provided. The only argument is an object
   * with the following properties:
   *
   *   - line: The line number in the generated source.
   *   - column: The column number in the generated source.
   *
   * and an object is returned with the following properties:
   *
   *   - source: The original source file, or null.
   *   - line: The line number in the original source, or null.
   *   - column: The column number in the original source, or null.
   *   - name: The original identifier, or null.
   */
  IndexedSourceMapConsumer.prototype.originalPositionFor =
    function IndexedSourceMapConsumer_originalPositionFor(aArgs) {
      var needle = {
        generatedLine: util.getArg(aArgs, 'line'),
        generatedColumn: util.getArg(aArgs, 'column')
      };

      // Find the section containing the generated position we're trying to map
      // to an original position.
      var sectionIndex = binarySearch.search(needle, this._sections,
        function(needle, section) {
          var cmp = needle.generatedLine - section.generatedOffset.generatedLine;
          if (cmp) {
            return cmp;
          }

          return (needle.generatedColumn -
                  section.generatedOffset.generatedColumn);
        });
      var section = this._sections[sectionIndex];

      if (!section) {
        return {
          source: null,
          line: null,
          column: null,
          name: null
        };
      }

      return section.consumer.originalPositionFor({
        line: needle.generatedLine -
          (section.generatedOffset.generatedLine - 1),
        column: needle.generatedColumn -
          (section.generatedOffset.generatedLine === needle.generatedLine
           ? section.generatedOffset.generatedColumn - 1
           : 0),
        bias: aArgs.bias
      });
    };

  /**
   * Returns the original source content. The only argument is the url of the
   * original source file. Returns null if no original source content is
   * available.
   */
  IndexedSourceMapConsumer.prototype.sourceContentFor =
    function IndexedSourceMapConsumer_sourceContentFor(aSource, nullOnMissing) {
      for (var i = 0; i < this._sections.length; i++) {
        var section = this._sections[i];

        var content = section.consumer.sourceContentFor(aSource, true);
        if (content) {
          return content;
        }
      }
      if (nullOnMissing) {
        return null;
      }
      else {
        throw new Error('"' + aSource + '" is not in the SourceMap.');
      }
    };

  /**
   * Returns the generated line and column information for the original source,
   * line, and column positions provided. The only argument is an object with
   * the following properties:
   *
   *   - source: The filename of the original source.
   *   - line: The line number in the original source.
   *   - column: The column number in the original source.
   *
   * and an object is returned with the following properties:
   *
   *   - line: The line number in the generated source, or null.
   *   - column: The column number in the generated source, or null.
   */
  IndexedSourceMapConsumer.prototype.generatedPositionFor =
    function IndexedSourceMapConsumer_generatedPositionFor(aArgs) {
      for (var i = 0; i < this._sections.length; i++) {
        var section = this._sections[i];

        // Only consider this section if the requested source is in the list of
        // sources of the consumer.
        if (section.consumer.sources.indexOf(util.getArg(aArgs, 'source')) === -1) {
          continue;
        }
        var generatedPosition = section.consumer.generatedPositionFor(aArgs);
        if (generatedPosition) {
          var ret = {
            line: generatedPosition.line +
              (section.generatedOffset.generatedLine - 1),
            column: generatedPosition.column +
              (section.generatedOffset.generatedLine === generatedPosition.line
               ? section.generatedOffset.generatedColumn - 1
               : 0)
          };
          return ret;
        }
      }

      return {
        line: null,
        column: null
      };
    };

  /**
   * Parse the mappings in a string in to a data structure which we can easily
   * query (the ordered arrays in the `this.__generatedMappings` and
   * `this.__originalMappings` properties).
   */
  IndexedSourceMapConsumer.prototype._parseMappings =
    function IndexedSourceMapConsumer_parseMappings(aStr, aSourceRoot) {
      this.__generatedMappings = [];
      this.__originalMappings = [];
      for (var i = 0; i < this._sections.length; i++) {
        var section = this._sections[i];
        var sectionMappings = section.consumer._generatedMappings;
        for (var j = 0; j < sectionMappings.length; j++) {
          var mapping = sectionMappings[i];

          var source = mapping.source;
          var sourceRoot = section.consumer.sourceRoot;

          if (source != null && sourceRoot != null) {
            source = util.join(sourceRoot, source);
          }

          // The mappings coming from the consumer for the section have
          // generated positions relative to the start of the section, so we
          // need to offset them to be relative to the start of the concatenated
          // generated file.
          var adjustedMapping = {
            source: source,
            generatedLine: mapping.generatedLine +
              (section.generatedOffset.generatedLine - 1),
            generatedColumn: mapping.column +
              (section.generatedOffset.generatedLine === mapping.generatedLine)
              ? section.generatedOffset.generatedColumn - 1
              : 0,
            originalLine: mapping.originalLine,
            originalColumn: mapping.originalColumn,
            name: mapping.name
          };

          this.__generatedMappings.push(adjustedMapping);
          if (typeof adjustedMapping.originalLine === 'number') {
            this.__originalMappings.push(adjustedMapping);
          }
        };
      };

    this.__generatedMappings.sort(util.compareByGeneratedPositions);
    this.__originalMappings.sort(util.compareByOriginalPositions);
  };

  exports.IndexedSourceMapConsumer = IndexedSourceMapConsumer;

});

},{"./array-set":484,"./base64-vlq":485,"./binary-search":487,"./util":492,"amdefine":493}],490:[function(require,module,exports){
/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */
if (typeof define !== 'function') {
    var define = require('amdefine')(module, require);
}
define(function (require, exports, module) {

  var base64VLQ = require('./base64-vlq');
  var util = require('./util');
  var ArraySet = require('./array-set').ArraySet;
  var MappingList = require('./mapping-list').MappingList;

  /**
   * An instance of the SourceMapGenerator represents a source map which is
   * being built incrementally. You may pass an object with the following
   * properties:
   *
   *   - file: The filename of the generated source.
   *   - sourceRoot: A root for all relative URLs in this source map.
   */
  function SourceMapGenerator(aArgs) {
    if (!aArgs) {
      aArgs = {};
    }
    this._file = util.getArg(aArgs, 'file', null);
    this._sourceRoot = util.getArg(aArgs, 'sourceRoot', null);
    this._skipValidation = util.getArg(aArgs, 'skipValidation', false);
    this._sources = new ArraySet();
    this._names = new ArraySet();
    this._mappings = new MappingList();
    this._sourcesContents = null;
  }

  SourceMapGenerator.prototype._version = 3;

  /**
   * Creates a new SourceMapGenerator based on a SourceMapConsumer
   *
   * @param aSourceMapConsumer The SourceMap.
   */
  SourceMapGenerator.fromSourceMap =
    function SourceMapGenerator_fromSourceMap(aSourceMapConsumer) {
      var sourceRoot = aSourceMapConsumer.sourceRoot;
      var generator = new SourceMapGenerator({
        file: aSourceMapConsumer.file,
        sourceRoot: sourceRoot
      });
      aSourceMapConsumer.eachMapping(function (mapping) {
        var newMapping = {
          generated: {
            line: mapping.generatedLine,
            column: mapping.generatedColumn
          }
        };

        if (mapping.source != null) {
          newMapping.source = mapping.source;
          if (sourceRoot != null) {
            newMapping.source = util.relative(sourceRoot, newMapping.source);
          }

          newMapping.original = {
            line: mapping.originalLine,
            column: mapping.originalColumn
          };

          if (mapping.name != null) {
            newMapping.name = mapping.name;
          }
        }

        generator.addMapping(newMapping);
      });
      aSourceMapConsumer.sources.forEach(function (sourceFile) {
        var content = aSourceMapConsumer.sourceContentFor(sourceFile);
        if (content != null) {
          generator.setSourceContent(sourceFile, content);
        }
      });
      return generator;
    };

  /**
   * Add a single mapping from original source line and column to the generated
   * source's line and column for this source map being created. The mapping
   * object should have the following properties:
   *
   *   - generated: An object with the generated line and column positions.
   *   - original: An object with the original line and column positions.
   *   - source: The original source file (relative to the sourceRoot).
   *   - name: An optional original token name for this mapping.
   */
  SourceMapGenerator.prototype.addMapping =
    function SourceMapGenerator_addMapping(aArgs) {
      var generated = util.getArg(aArgs, 'generated');
      var original = util.getArg(aArgs, 'original', null);
      var source = util.getArg(aArgs, 'source', null);
      var name = util.getArg(aArgs, 'name', null);

      if (!this._skipValidation) {
        this._validateMapping(generated, original, source, name);
      }

      if (source != null && !this._sources.has(source)) {
        this._sources.add(source);
      }

      if (name != null && !this._names.has(name)) {
        this._names.add(name);
      }

      this._mappings.add({
        generatedLine: generated.line,
        generatedColumn: generated.column,
        originalLine: original != null && original.line,
        originalColumn: original != null && original.column,
        source: source,
        name: name
      });
    };

  /**
   * Set the source content for a source file.
   */
  SourceMapGenerator.prototype.setSourceContent =
    function SourceMapGenerator_setSourceContent(aSourceFile, aSourceContent) {
      var source = aSourceFile;
      if (this._sourceRoot != null) {
        source = util.relative(this._sourceRoot, source);
      }

      if (aSourceContent != null) {
        // Add the source content to the _sourcesContents map.
        // Create a new _sourcesContents map if the property is null.
        if (!this._sourcesContents) {
          this._sourcesContents = {};
        }
        this._sourcesContents[util.toSetString(source)] = aSourceContent;
      } else if (this._sourcesContents) {
        // Remove the source file from the _sourcesContents map.
        // If the _sourcesContents map is empty, set the property to null.
        delete this._sourcesContents[util.toSetString(source)];
        if (Object.keys(this._sourcesContents).length === 0) {
          this._sourcesContents = null;
        }
      }
    };

  /**
   * Applies the mappings of a sub-source-map for a specific source file to the
   * source map being generated. Each mapping to the supplied source file is
   * rewritten using the supplied source map. Note: The resolution for the
   * resulting mappings is the minimium of this map and the supplied map.
   *
   * @param aSourceMapConsumer The source map to be applied.
   * @param aSourceFile Optional. The filename of the source file.
   *        If omitted, SourceMapConsumer's file property will be used.
   * @param aSourceMapPath Optional. The dirname of the path to the source map
   *        to be applied. If relative, it is relative to the SourceMapConsumer.
   *        This parameter is needed when the two source maps aren't in the same
   *        directory, and the source map to be applied contains relative source
   *        paths. If so, those relative source paths need to be rewritten
   *        relative to the SourceMapGenerator.
   */
  SourceMapGenerator.prototype.applySourceMap =
    function SourceMapGenerator_applySourceMap(aSourceMapConsumer, aSourceFile, aSourceMapPath) {
      var sourceFile = aSourceFile;
      // If aSourceFile is omitted, we will use the file property of the SourceMap
      if (aSourceFile == null) {
        if (aSourceMapConsumer.file == null) {
          throw new Error(
            'SourceMapGenerator.prototype.applySourceMap requires either an explicit source file, ' +
            'or the source map\'s "file" property. Both were omitted.'
          );
        }
        sourceFile = aSourceMapConsumer.file;
      }
      var sourceRoot = this._sourceRoot;
      // Make "sourceFile" relative if an absolute Url is passed.
      if (sourceRoot != null) {
        sourceFile = util.relative(sourceRoot, sourceFile);
      }
      // Applying the SourceMap can add and remove items from the sources and
      // the names array.
      var newSources = new ArraySet();
      var newNames = new ArraySet();

      // Find mappings for the "sourceFile"
      this._mappings.unsortedForEach(function (mapping) {
        if (mapping.source === sourceFile && mapping.originalLine != null) {
          // Check if it can be mapped by the source map, then update the mapping.
          var original = aSourceMapConsumer.originalPositionFor({
            line: mapping.originalLine,
            column: mapping.originalColumn
          });
          if (original.source != null) {
            // Copy mapping
            mapping.source = original.source;
            if (aSourceMapPath != null) {
              mapping.source = util.join(aSourceMapPath, mapping.source)
            }
            if (sourceRoot != null) {
              mapping.source = util.relative(sourceRoot, mapping.source);
            }
            mapping.originalLine = original.line;
            mapping.originalColumn = original.column;
            if (original.name != null) {
              mapping.name = original.name;
            }
          }
        }

        var source = mapping.source;
        if (source != null && !newSources.has(source)) {
          newSources.add(source);
        }

        var name = mapping.name;
        if (name != null && !newNames.has(name)) {
          newNames.add(name);
        }

      }, this);
      this._sources = newSources;
      this._names = newNames;

      // Copy sourcesContents of applied map.
      aSourceMapConsumer.sources.forEach(function (sourceFile) {
        var content = aSourceMapConsumer.sourceContentFor(sourceFile);
        if (content != null) {
          if (aSourceMapPath != null) {
            sourceFile = util.join(aSourceMapPath, sourceFile);
          }
          if (sourceRoot != null) {
            sourceFile = util.relative(sourceRoot, sourceFile);
          }
          this.setSourceContent(sourceFile, content);
        }
      }, this);
    };

  /**
   * A mapping can have one of the three levels of data:
   *
   *   1. Just the generated position.
   *   2. The Generated position, original position, and original source.
   *   3. Generated and original position, original source, as well as a name
   *      token.
   *
   * To maintain consistency, we validate that any new mapping being added falls
   * in to one of these categories.
   */
  SourceMapGenerator.prototype._validateMapping =
    function SourceMapGenerator_validateMapping(aGenerated, aOriginal, aSource,
                                                aName) {
      if (aGenerated && 'line' in aGenerated && 'column' in aGenerated
          && aGenerated.line > 0 && aGenerated.column >= 0
          && !aOriginal && !aSource && !aName) {
        // Case 1.
        return;
      }
      else if (aGenerated && 'line' in aGenerated && 'column' in aGenerated
               && aOriginal && 'line' in aOriginal && 'column' in aOriginal
               && aGenerated.line > 0 && aGenerated.column >= 0
               && aOriginal.line > 0 && aOriginal.column >= 0
               && aSource) {
        // Cases 2 and 3.
        return;
      }
      else {
        throw new Error('Invalid mapping: ' + JSON.stringify({
          generated: aGenerated,
          source: aSource,
          original: aOriginal,
          name: aName
        }));
      }
    };

  /**
   * Serialize the accumulated mappings in to the stream of base 64 VLQs
   * specified by the source map format.
   */
  SourceMapGenerator.prototype._serializeMappings =
    function SourceMapGenerator_serializeMappings() {
      var previousGeneratedColumn = 0;
      var previousGeneratedLine = 1;
      var previousOriginalColumn = 0;
      var previousOriginalLine = 0;
      var previousName = 0;
      var previousSource = 0;
      var result = '';
      var mapping;

      var mappings = this._mappings.toArray();

      for (var i = 0, len = mappings.length; i < len; i++) {
        mapping = mappings[i];

        if (mapping.generatedLine !== previousGeneratedLine) {
          previousGeneratedColumn = 0;
          while (mapping.generatedLine !== previousGeneratedLine) {
            result += ';';
            previousGeneratedLine++;
          }
        }
        else {
          if (i > 0) {
            if (!util.compareByGeneratedPositions(mapping, mappings[i - 1])) {
              continue;
            }
            result += ',';
          }
        }

        result += base64VLQ.encode(mapping.generatedColumn
                                   - previousGeneratedColumn);
        previousGeneratedColumn = mapping.generatedColumn;

        if (mapping.source != null) {
          result += base64VLQ.encode(this._sources.indexOf(mapping.source)
                                     - previousSource);
          previousSource = this._sources.indexOf(mapping.source);

          // lines are stored 0-based in SourceMap spec version 3
          result += base64VLQ.encode(mapping.originalLine - 1
                                     - previousOriginalLine);
          previousOriginalLine = mapping.originalLine - 1;

          result += base64VLQ.encode(mapping.originalColumn
                                     - previousOriginalColumn);
          previousOriginalColumn = mapping.originalColumn;

          if (mapping.name != null) {
            result += base64VLQ.encode(this._names.indexOf(mapping.name)
                                       - previousName);
            previousName = this._names.indexOf(mapping.name);
          }
        }
      }

      return result;
    };

  SourceMapGenerator.prototype._generateSourcesContent =
    function SourceMapGenerator_generateSourcesContent(aSources, aSourceRoot) {
      return aSources.map(function (source) {
        if (!this._sourcesContents) {
          return null;
        }
        if (aSourceRoot != null) {
          source = util.relative(aSourceRoot, source);
        }
        var key = util.toSetString(source);
        return Object.prototype.hasOwnProperty.call(this._sourcesContents,
                                                    key)
          ? this._sourcesContents[key]
          : null;
      }, this);
    };

  /**
   * Externalize the source map.
   */
  SourceMapGenerator.prototype.toJSON =
    function SourceMapGenerator_toJSON() {
      var map = {
        version: this._version,
        sources: this._sources.toArray(),
        names: this._names.toArray(),
        mappings: this._serializeMappings()
      };
      if (this._file != null) {
        map.file = this._file;
      }
      if (this._sourceRoot != null) {
        map.sourceRoot = this._sourceRoot;
      }
      if (this._sourcesContents) {
        map.sourcesContent = this._generateSourcesContent(map.sources, map.sourceRoot);
      }

      return map;
    };

  /**
   * Render the source map being generated to a string.
   */
  SourceMapGenerator.prototype.toString =
    function SourceMapGenerator_toString() {
      return JSON.stringify(this.toJSON());
    };

  exports.SourceMapGenerator = SourceMapGenerator;

});

},{"./array-set":484,"./base64-vlq":485,"./mapping-list":488,"./util":492,"amdefine":493}],491:[function(require,module,exports){
/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */
if (typeof define !== 'function') {
    var define = require('amdefine')(module, require);
}
define(function (require, exports, module) {

  var SourceMapGenerator = require('./source-map-generator').SourceMapGenerator;
  var util = require('./util');

  // Matches a Windows-style `\r\n` newline or a `\n` newline used by all other
  // operating systems these days (capturing the result).
  var REGEX_NEWLINE = /(\r?\n)/;

  // Newline character code for charCodeAt() comparisons
  var NEWLINE_CODE = 10;

  // Private symbol for identifying `SourceNode`s when multiple versions of
  // the source-map library are loaded. This MUST NOT CHANGE across
  // versions!
  var isSourceNode = "$$$isSourceNode$$$";

  /**
   * SourceNodes provide a way to abstract over interpolating/concatenating
   * snippets of generated JavaScript source code while maintaining the line and
   * column information associated with the original source code.
   *
   * @param aLine The original line number.
   * @param aColumn The original column number.
   * @param aSource The original source's filename.
   * @param aChunks Optional. An array of strings which are snippets of
   *        generated JS, or other SourceNodes.
   * @param aName The original identifier.
   */
  function SourceNode(aLine, aColumn, aSource, aChunks, aName) {
    this.children = [];
    this.sourceContents = {};
    this.line = aLine == null ? null : aLine;
    this.column = aColumn == null ? null : aColumn;
    this.source = aSource == null ? null : aSource;
    this.name = aName == null ? null : aName;
    this[isSourceNode] = true;
    if (aChunks != null) this.add(aChunks);
  }

  /**
   * Creates a SourceNode from generated code and a SourceMapConsumer.
   *
   * @param aGeneratedCode The generated code
   * @param aSourceMapConsumer The SourceMap for the generated code
   * @param aRelativePath Optional. The path that relative sources in the
   *        SourceMapConsumer should be relative to.
   */
  SourceNode.fromStringWithSourceMap =
    function SourceNode_fromStringWithSourceMap(aGeneratedCode, aSourceMapConsumer, aRelativePath) {
      // The SourceNode we want to fill with the generated code
      // and the SourceMap
      var node = new SourceNode();

      // All even indices of this array are one line of the generated code,
      // while all odd indices are the newlines between two adjacent lines
      // (since `REGEX_NEWLINE` captures its match).
      // Processed fragments are removed from this array, by calling `shiftNextLine`.
      var remainingLines = aGeneratedCode.split(REGEX_NEWLINE);
      var shiftNextLine = function() {
        var lineContents = remainingLines.shift();
        // The last line of a file might not have a newline.
        var newLine = remainingLines.shift() || "";
        return lineContents + newLine;
      };

      // We need to remember the position of "remainingLines"
      var lastGeneratedLine = 1, lastGeneratedColumn = 0;

      // The generate SourceNodes we need a code range.
      // To extract it current and last mapping is used.
      // Here we store the last mapping.
      var lastMapping = null;

      aSourceMapConsumer.eachMapping(function (mapping) {
        if (lastMapping !== null) {
          // We add the code from "lastMapping" to "mapping":
          // First check if there is a new line in between.
          if (lastGeneratedLine < mapping.generatedLine) {
            var code = "";
            // Associate first line with "lastMapping"
            addMappingWithCode(lastMapping, shiftNextLine());
            lastGeneratedLine++;
            lastGeneratedColumn = 0;
            // The remaining code is added without mapping
          } else {
            // There is no new line in between.
            // Associate the code between "lastGeneratedColumn" and
            // "mapping.generatedColumn" with "lastMapping"
            var nextLine = remainingLines[0];
            var code = nextLine.substr(0, mapping.generatedColumn -
                                          lastGeneratedColumn);
            remainingLines[0] = nextLine.substr(mapping.generatedColumn -
                                                lastGeneratedColumn);
            lastGeneratedColumn = mapping.generatedColumn;
            addMappingWithCode(lastMapping, code);
            // No more remaining code, continue
            lastMapping = mapping;
            return;
          }
        }
        // We add the generated code until the first mapping
        // to the SourceNode without any mapping.
        // Each line is added as separate string.
        while (lastGeneratedLine < mapping.generatedLine) {
          node.add(shiftNextLine());
          lastGeneratedLine++;
        }
        if (lastGeneratedColumn < mapping.generatedColumn) {
          var nextLine = remainingLines[0];
          node.add(nextLine.substr(0, mapping.generatedColumn));
          remainingLines[0] = nextLine.substr(mapping.generatedColumn);
          lastGeneratedColumn = mapping.generatedColumn;
        }
        lastMapping = mapping;
      }, this);
      // We have processed all mappings.
      if (remainingLines.length > 0) {
        if (lastMapping) {
          // Associate the remaining code in the current line with "lastMapping"
          addMappingWithCode(lastMapping, shiftNextLine());
        }
        // and add the remaining lines without any mapping
        node.add(remainingLines.join(""));
      }

      // Copy sourcesContent into SourceNode
      aSourceMapConsumer.sources.forEach(function (sourceFile) {
        var content = aSourceMapConsumer.sourceContentFor(sourceFile);
        if (content != null) {
          if (aRelativePath != null) {
            sourceFile = util.join(aRelativePath, sourceFile);
          }
          node.setSourceContent(sourceFile, content);
        }
      });

      return node;

      function addMappingWithCode(mapping, code) {
        if (mapping === null || mapping.source === undefined) {
          node.add(code);
        } else {
          var source = aRelativePath
            ? util.join(aRelativePath, mapping.source)
            : mapping.source;
          node.add(new SourceNode(mapping.originalLine,
                                  mapping.originalColumn,
                                  source,
                                  code,
                                  mapping.name));
        }
      }
    };

  /**
   * Add a chunk of generated JS to this source node.
   *
   * @param aChunk A string snippet of generated JS code, another instance of
   *        SourceNode, or an array where each member is one of those things.
   */
  SourceNode.prototype.add = function SourceNode_add(aChunk) {
    if (Array.isArray(aChunk)) {
      aChunk.forEach(function (chunk) {
        this.add(chunk);
      }, this);
    }
    else if (aChunk[isSourceNode] || typeof aChunk === "string") {
      if (aChunk) {
        this.children.push(aChunk);
      }
    }
    else {
      throw new TypeError(
        "Expected a SourceNode, string, or an array of SourceNodes and strings. Got " + aChunk
      );
    }
    return this;
  };

  /**
   * Add a chunk of generated JS to the beginning of this source node.
   *
   * @param aChunk A string snippet of generated JS code, another instance of
   *        SourceNode, or an array where each member is one of those things.
   */
  SourceNode.prototype.prepend = function SourceNode_prepend(aChunk) {
    if (Array.isArray(aChunk)) {
      for (var i = aChunk.length-1; i >= 0; i--) {
        this.prepend(aChunk[i]);
      }
    }
    else if (aChunk[isSourceNode] || typeof aChunk === "string") {
      this.children.unshift(aChunk);
    }
    else {
      throw new TypeError(
        "Expected a SourceNode, string, or an array of SourceNodes and strings. Got " + aChunk
      );
    }
    return this;
  };

  /**
   * Walk over the tree of JS snippets in this node and its children. The
   * walking function is called once for each snippet of JS and is passed that
   * snippet and the its original associated source's line/column location.
   *
   * @param aFn The traversal function.
   */
  SourceNode.prototype.walk = function SourceNode_walk(aFn) {
    var chunk;
    for (var i = 0, len = this.children.length; i < len; i++) {
      chunk = this.children[i];
      if (chunk[isSourceNode]) {
        chunk.walk(aFn);
      }
      else {
        if (chunk !== '') {
          aFn(chunk, { source: this.source,
                       line: this.line,
                       column: this.column,
                       name: this.name });
        }
      }
    }
  };

  /**
   * Like `String.prototype.join` except for SourceNodes. Inserts `aStr` between
   * each of `this.children`.
   *
   * @param aSep The separator.
   */
  SourceNode.prototype.join = function SourceNode_join(aSep) {
    var newChildren;
    var i;
    var len = this.children.length;
    if (len > 0) {
      newChildren = [];
      for (i = 0; i < len-1; i++) {
        newChildren.push(this.children[i]);
        newChildren.push(aSep);
      }
      newChildren.push(this.children[i]);
      this.children = newChildren;
    }
    return this;
  };

  /**
   * Call String.prototype.replace on the very right-most source snippet. Useful
   * for trimming whitespace from the end of a source node, etc.
   *
   * @param aPattern The pattern to replace.
   * @param aReplacement The thing to replace the pattern with.
   */
  SourceNode.prototype.replaceRight = function SourceNode_replaceRight(aPattern, aReplacement) {
    var lastChild = this.children[this.children.length - 1];
    if (lastChild[isSourceNode]) {
      lastChild.replaceRight(aPattern, aReplacement);
    }
    else if (typeof lastChild === 'string') {
      this.children[this.children.length - 1] = lastChild.replace(aPattern, aReplacement);
    }
    else {
      this.children.push(''.replace(aPattern, aReplacement));
    }
    return this;
  };

  /**
   * Set the source content for a source file. This will be added to the SourceMapGenerator
   * in the sourcesContent field.
   *
   * @param aSourceFile The filename of the source file
   * @param aSourceContent The content of the source file
   */
  SourceNode.prototype.setSourceContent =
    function SourceNode_setSourceContent(aSourceFile, aSourceContent) {
      this.sourceContents[util.toSetString(aSourceFile)] = aSourceContent;
    };

  /**
   * Walk over the tree of SourceNodes. The walking function is called for each
   * source file content and is passed the filename and source content.
   *
   * @param aFn The traversal function.
   */
  SourceNode.prototype.walkSourceContents =
    function SourceNode_walkSourceContents(aFn) {
      for (var i = 0, len = this.children.length; i < len; i++) {
        if (this.children[i][isSourceNode]) {
          this.children[i].walkSourceContents(aFn);
        }
      }

      var sources = Object.keys(this.sourceContents);
      for (var i = 0, len = sources.length; i < len; i++) {
        aFn(util.fromSetString(sources[i]), this.sourceContents[sources[i]]);
      }
    };

  /**
   * Return the string representation of this source node. Walks over the tree
   * and concatenates all the various snippets together to one string.
   */
  SourceNode.prototype.toString = function SourceNode_toString() {
    var str = "";
    this.walk(function (chunk) {
      str += chunk;
    });
    return str;
  };

  /**
   * Returns the string representation of this source node along with a source
   * map.
   */
  SourceNode.prototype.toStringWithSourceMap = function SourceNode_toStringWithSourceMap(aArgs) {
    var generated = {
      code: "",
      line: 1,
      column: 0
    };
    var map = new SourceMapGenerator(aArgs);
    var sourceMappingActive = false;
    var lastOriginalSource = null;
    var lastOriginalLine = null;
    var lastOriginalColumn = null;
    var lastOriginalName = null;
    this.walk(function (chunk, original) {
      generated.code += chunk;
      if (original.source !== null
          && original.line !== null
          && original.column !== null) {
        if(lastOriginalSource !== original.source
           || lastOriginalLine !== original.line
           || lastOriginalColumn !== original.column
           || lastOriginalName !== original.name) {
          map.addMapping({
            source: original.source,
            original: {
              line: original.line,
              column: original.column
            },
            generated: {
              line: generated.line,
              column: generated.column
            },
            name: original.name
          });
        }
        lastOriginalSource = original.source;
        lastOriginalLine = original.line;
        lastOriginalColumn = original.column;
        lastOriginalName = original.name;
        sourceMappingActive = true;
      } else if (sourceMappingActive) {
        map.addMapping({
          generated: {
            line: generated.line,
            column: generated.column
          }
        });
        lastOriginalSource = null;
        sourceMappingActive = false;
      }
      for (var idx = 0, length = chunk.length; idx < length; idx++) {
        if (chunk.charCodeAt(idx) === NEWLINE_CODE) {
          generated.line++;
          generated.column = 0;
          // Mappings end at eol
          if (idx + 1 === length) {
            lastOriginalSource = null;
            sourceMappingActive = false;
          } else if (sourceMappingActive) {
            map.addMapping({
              source: original.source,
              original: {
                line: original.line,
                column: original.column
              },
              generated: {
                line: generated.line,
                column: generated.column
              },
              name: original.name
            });
          }
        } else {
          generated.column++;
        }
      }
    });
    this.walkSourceContents(function (sourceFile, sourceContent) {
      map.setSourceContent(sourceFile, sourceContent);
    });

    return { code: generated.code, map: map };
  };

  exports.SourceNode = SourceNode;

});

},{"./source-map-generator":490,"./util":492,"amdefine":493}],492:[function(require,module,exports){
/* -*- Mode: js; js-indent-level: 2; -*- */
/*
 * Copyright 2011 Mozilla Foundation and contributors
 * Licensed under the New BSD license. See LICENSE or:
 * http://opensource.org/licenses/BSD-3-Clause
 */
if (typeof define !== 'function') {
    var define = require('amdefine')(module, require);
}
define(function (require, exports, module) {

  /**
   * This is a helper function for getting values from parameter/options
   * objects.
   *
   * @param args The object we are extracting values from
   * @param name The name of the property we are getting.
   * @param defaultValue An optional value to return if the property is missing
   * from the object. If this is not specified and the property is missing, an
   * error will be thrown.
   */
  function getArg(aArgs, aName, aDefaultValue) {
    if (aName in aArgs) {
      return aArgs[aName];
    } else if (arguments.length === 3) {
      return aDefaultValue;
    } else {
      throw new Error('"' + aName + '" is a required argument.');
    }
  }
  exports.getArg = getArg;

  var urlRegexp = /^(?:([\w+\-.]+):)?\/\/(?:(\w+:\w+)@)?([\w.]*)(?::(\d+))?(\S*)$/;
  var dataUrlRegexp = /^data:.+\,.+$/;

  function urlParse(aUrl) {
    var match = aUrl.match(urlRegexp);
    if (!match) {
      return null;
    }
    return {
      scheme: match[1],
      auth: match[2],
      host: match[3],
      port: match[4],
      path: match[5]
    };
  }
  exports.urlParse = urlParse;

  function urlGenerate(aParsedUrl) {
    var url = '';
    if (aParsedUrl.scheme) {
      url += aParsedUrl.scheme + ':';
    }
    url += '//';
    if (aParsedUrl.auth) {
      url += aParsedUrl.auth + '@';
    }
    if (aParsedUrl.host) {
      url += aParsedUrl.host;
    }
    if (aParsedUrl.port) {
      url += ":" + aParsedUrl.port
    }
    if (aParsedUrl.path) {
      url += aParsedUrl.path;
    }
    return url;
  }
  exports.urlGenerate = urlGenerate;

  /**
   * Normalizes a path, or the path portion of a URL:
   *
   * - Replaces consequtive slashes with one slash.
   * - Removes unnecessary '.' parts.
   * - Removes unnecessary '<dir>/..' parts.
   *
   * Based on code in the Node.js 'path' core module.
   *
   * @param aPath The path or url to normalize.
   */
  function normalize(aPath) {
    var path = aPath;
    var url = urlParse(aPath);
    if (url) {
      if (!url.path) {
        return aPath;
      }
      path = url.path;
    }
    var isAbsolute = (path.charAt(0) === '/');

    var parts = path.split(/\/+/);
    for (var part, up = 0, i = parts.length - 1; i >= 0; i--) {
      part = parts[i];
      if (part === '.') {
        parts.splice(i, 1);
      } else if (part === '..') {
        up++;
      } else if (up > 0) {
        if (part === '') {
          // The first part is blank if the path is absolute. Trying to go
          // above the root is a no-op. Therefore we can remove all '..' parts
          // directly after the root.
          parts.splice(i + 1, up);
          up = 0;
        } else {
          parts.splice(i, 2);
          up--;
        }
      }
    }
    path = parts.join('/');

    if (path === '') {
      path = isAbsolute ? '/' : '.';
    }

    if (url) {
      url.path = path;
      return urlGenerate(url);
    }
    return path;
  }
  exports.normalize = normalize;

  /**
   * Joins two paths/URLs.
   *
   * @param aRoot The root path or URL.
   * @param aPath The path or URL to be joined with the root.
   *
   * - If aPath is a URL or a data URI, aPath is returned, unless aPath is a
   *   scheme-relative URL: Then the scheme of aRoot, if any, is prepended
   *   first.
   * - Otherwise aPath is a path. If aRoot is a URL, then its path portion
   *   is updated with the result and aRoot is returned. Otherwise the result
   *   is returned.
   *   - If aPath is absolute, the result is aPath.
   *   - Otherwise the two paths are joined with a slash.
   * - Joining for example 'http://' and 'www.example.com' is also supported.
   */
  function join(aRoot, aPath) {
    if (aRoot === "") {
      aRoot = ".";
    }
    if (aPath === "") {
      aPath = ".";
    }
    var aPathUrl = urlParse(aPath);
    var aRootUrl = urlParse(aRoot);
    if (aRootUrl) {
      aRoot = aRootUrl.path || '/';
    }

    // `join(foo, '//www.example.org')`
    if (aPathUrl && !aPathUrl.scheme) {
      if (aRootUrl) {
        aPathUrl.scheme = aRootUrl.scheme;
      }
      return urlGenerate(aPathUrl);
    }

    if (aPathUrl || aPath.match(dataUrlRegexp)) {
      return aPath;
    }

    // `join('http://', 'www.example.com')`
    if (aRootUrl && !aRootUrl.host && !aRootUrl.path) {
      aRootUrl.host = aPath;
      return urlGenerate(aRootUrl);
    }

    var joined = aPath.charAt(0) === '/'
      ? aPath
      : normalize(aRoot.replace(/\/+$/, '') + '/' + aPath);

    if (aRootUrl) {
      aRootUrl.path = joined;
      return urlGenerate(aRootUrl);
    }
    return joined;
  }
  exports.join = join;

  /**
   * Make a path relative to a URL or another path.
   *
   * @param aRoot The root path or URL.
   * @param aPath The path or URL to be made relative to aRoot.
   */
  function relative(aRoot, aPath) {
    if (aRoot === "") {
      aRoot = ".";
    }

    aRoot = aRoot.replace(/\/$/, '');

    // XXX: It is possible to remove this block, and the tests still pass!
    var url = urlParse(aRoot);
    if (aPath.charAt(0) == "/" && url && url.path == "/") {
      return aPath.slice(1);
    }

    return aPath.indexOf(aRoot + '/') === 0
      ? aPath.substr(aRoot.length + 1)
      : aPath;
  }
  exports.relative = relative;

  /**
   * Because behavior goes wacky when you set `__proto__` on objects, we
   * have to prefix all the strings in our set with an arbitrary character.
   *
   * See https://github.com/mozilla/source-map/pull/31 and
   * https://github.com/mozilla/source-map/issues/30
   *
   * @param String aStr
   */
  function toSetString(aStr) {
    return '$' + aStr;
  }
  exports.toSetString = toSetString;

  function fromSetString(aStr) {
    return aStr.substr(1);
  }
  exports.fromSetString = fromSetString;

  function strcmp(aStr1, aStr2) {
    var s1 = aStr1 || "";
    var s2 = aStr2 || "";
    return (s1 > s2) - (s1 < s2);
  }

  /**
   * Comparator between two mappings where the original positions are compared.
   *
   * Optionally pass in `true` as `onlyCompareGenerated` to consider two
   * mappings with the same original source/line/column, but different generated
   * line and column the same. Useful when searching for a mapping with a
   * stubbed out mapping.
   */
  function compareByOriginalPositions(mappingA, mappingB, onlyCompareOriginal) {
    var cmp;

    cmp = strcmp(mappingA.source, mappingB.source);
    if (cmp) {
      return cmp;
    }

    cmp = mappingA.originalLine - mappingB.originalLine;
    if (cmp) {
      return cmp;
    }

    cmp = mappingA.originalColumn - mappingB.originalColumn;
    if (cmp || onlyCompareOriginal) {
      return cmp;
    }

    cmp = mappingA.generatedColumn - mappingB.generatedColumn;
    if (cmp) {
      return cmp;
    }

    cmp = mappingA.generatedLine - mappingB.generatedLine;
    if (cmp) {
      return cmp;
    }

    return strcmp(mappingA.name, mappingB.name);
  };
  exports.compareByOriginalPositions = compareByOriginalPositions;

  /**
   * Comparator between two mappings where the generated positions are
   * compared.
   *
   * Optionally pass in `true` as `onlyCompareGenerated` to consider two
   * mappings with the same generated line and column, but different
   * source/name/original line and column the same. Useful when searching for a
   * mapping with a stubbed out mapping.
   */
  function compareByGeneratedPositions(mappingA, mappingB, onlyCompareGenerated) {
    var cmp;

    cmp = mappingA.generatedLine - mappingB.generatedLine;
    if (cmp) {
      return cmp;
    }

    cmp = mappingA.generatedColumn - mappingB.generatedColumn;
    if (cmp || onlyCompareGenerated) {
      return cmp;
    }

    cmp = strcmp(mappingA.source, mappingB.source);
    if (cmp) {
      return cmp;
    }

    cmp = mappingA.originalLine - mappingB.originalLine;
    if (cmp) {
      return cmp;
    }

    cmp = mappingA.originalColumn - mappingB.originalColumn;
    if (cmp) {
      return cmp;
    }

    return strcmp(mappingA.name, mappingB.name);
  };
  exports.compareByGeneratedPositions = compareByGeneratedPositions;

});

},{"amdefine":493}],493:[function(require,module,exports){
(function (process,__filename){
/** vim: et:ts=4:sw=4:sts=4
 * @license amdefine 0.1.0 Copyright (c) 2011, The Dojo Foundation All Rights Reserved.
 * Available via the MIT or new BSD license.
 * see: http://github.com/jrburke/amdefine for details
 */

/*jslint node: true */
/*global module, process */
'use strict';

/**
 * Creates a define for node.
 * @param {Object} module the "module" object that is defined by Node for the
 * current module.
 * @param {Function} [requireFn]. Node's require function for the current module.
 * It only needs to be passed in Node versions before 0.5, when module.require
 * did not exist.
 * @returns {Function} a define function that is usable for the current node
 * module.
 */
function amdefine(module, requireFn) {
    'use strict';
    var defineCache = {},
        loaderCache = {},
        alreadyCalled = false,
        path = require('path'),
        makeRequire, stringRequire;

    /**
     * Trims the . and .. from an array of path segments.
     * It will keep a leading path segment if a .. will become
     * the first path segment, to help with module name lookups,
     * which act like paths, but can be remapped. But the end result,
     * all paths that use this function should look normalized.
     * NOTE: this method MODIFIES the input array.
     * @param {Array} ary the array of path segments.
     */
    function trimDots(ary) {
        var i, part;
        for (i = 0; ary[i]; i+= 1) {
            part = ary[i];
            if (part === '.') {
                ary.splice(i, 1);
                i -= 1;
            } else if (part === '..') {
                if (i === 1 && (ary[2] === '..' || ary[0] === '..')) {
                    //End of the line. Keep at least one non-dot
                    //path segment at the front so it can be mapped
                    //correctly to disk. Otherwise, there is likely
                    //no path mapping for a path starting with '..'.
                    //This can still fail, but catches the most reasonable
                    //uses of ..
                    break;
                } else if (i > 0) {
                    ary.splice(i - 1, 2);
                    i -= 2;
                }
            }
        }
    }

    function normalize(name, baseName) {
        var baseParts;

        //Adjust any relative paths.
        if (name && name.charAt(0) === '.') {
            //If have a base name, try to normalize against it,
            //otherwise, assume it is a top-level require that will
            //be relative to baseUrl in the end.
            if (baseName) {
                baseParts = baseName.split('/');
                baseParts = baseParts.slice(0, baseParts.length - 1);
                baseParts = baseParts.concat(name.split('/'));
                trimDots(baseParts);
                name = baseParts.join('/');
            }
        }

        return name;
    }

    /**
     * Create the normalize() function passed to a loader plugin's
     * normalize method.
     */
    function makeNormalize(relName) {
        return function (name) {
            return normalize(name, relName);
        };
    }

    function makeLoad(id) {
        function load(value) {
            loaderCache[id] = value;
        }

        load.fromText = function (id, text) {
            //This one is difficult because the text can/probably uses
            //define, and any relative paths and requires should be relative
            //to that id was it would be found on disk. But this would require
            //bootstrapping a module/require fairly deeply from node core.
            //Not sure how best to go about that yet.
            throw new Error('amdefine does not implement load.fromText');
        };

        return load;
    }

    makeRequire = function (systemRequire, exports, module, relId) {
        function amdRequire(deps, callback) {
            if (typeof deps === 'string') {
                //Synchronous, single module require('')
                return stringRequire(systemRequire, exports, module, deps, relId);
            } else {
                //Array of dependencies with a callback.

                //Convert the dependencies to modules.
                deps = deps.map(function (depName) {
                    return stringRequire(systemRequire, exports, module, depName, relId);
                });

                //Wait for next tick to call back the require call.
                process.nextTick(function () {
                    callback.apply(null, deps);
                });
            }
        }

        amdRequire.toUrl = function (filePath) {
            if (filePath.indexOf('.') === 0) {
                return normalize(filePath, path.dirname(module.filename));
            } else {
                return filePath;
            }
        };

        return amdRequire;
    };

    //Favor explicit value, passed in if the module wants to support Node 0.4.
    requireFn = requireFn || function req() {
        return module.require.apply(module, arguments);
    };

    function runFactory(id, deps, factory) {
        var r, e, m, result;

        if (id) {
            e = loaderCache[id] = {};
            m = {
                id: id,
                uri: __filename,
                exports: e
            };
            r = makeRequire(requireFn, e, m, id);
        } else {
            //Only support one define call per file
            if (alreadyCalled) {
                throw new Error('amdefine with no module ID cannot be called more than once per file.');
            }
            alreadyCalled = true;

            //Use the real variables from node
            //Use module.exports for exports, since
            //the exports in here is amdefine exports.
            e = module.exports;
            m = module;
            r = makeRequire(requireFn, e, m, module.id);
        }

        //If there are dependencies, they are strings, so need
        //to convert them to dependency values.
        if (deps) {
            deps = deps.map(function (depName) {
                return r(depName);
            });
        }

        //Call the factory with the right dependencies.
        if (typeof factory === 'function') {
            result = factory.apply(m.exports, deps);
        } else {
            result = factory;
        }

        if (result !== undefined) {
            m.exports = result;
            if (id) {
                loaderCache[id] = m.exports;
            }
        }
    }

    stringRequire = function (systemRequire, exports, module, id, relId) {
        //Split the ID by a ! so that
        var index = id.indexOf('!'),
            originalId = id,
            prefix, plugin;

        if (index === -1) {
            id = normalize(id, relId);

            //Straight module lookup. If it is one of the special dependencies,
            //deal with it, otherwise, delegate to node.
            if (id === 'require') {
                return makeRequire(systemRequire, exports, module, relId);
            } else if (id === 'exports') {
                return exports;
            } else if (id === 'module') {
                return module;
            } else if (loaderCache.hasOwnProperty(id)) {
                return loaderCache[id];
            } else if (defineCache[id]) {
                runFactory.apply(null, defineCache[id]);
                return loaderCache[id];
            } else {
                if(systemRequire) {
                    return systemRequire(originalId);
                } else {
                    throw new Error('No module with ID: ' + id);
                }
            }
        } else {
            //There is a plugin in play.
            prefix = id.substring(0, index);
            id = id.substring(index + 1, id.length);

            plugin = stringRequire(systemRequire, exports, module, prefix, relId);

            if (plugin.normalize) {
                id = plugin.normalize(id, makeNormalize(relId));
            } else {
                //Normalize the ID normally.
                id = normalize(id, relId);
            }

            if (loaderCache[id]) {
                return loaderCache[id];
            } else {
                plugin.load(id, makeRequire(systemRequire, exports, module, relId), makeLoad(id), {});

                return loaderCache[id];
            }
        }
    };

    //Create a define function specific to the module asking for amdefine.
    function define(id, deps, factory) {
        if (Array.isArray(id)) {
            factory = deps;
            deps = id;
            id = undefined;
        } else if (typeof id !== 'string') {
            factory = id;
            id = deps = undefined;
        }

        if (deps && !Array.isArray(deps)) {
            factory = deps;
            deps = undefined;
        }

        if (!deps) {
            deps = ['require', 'exports', 'module'];
        }

        //Set up properties for this module. If an ID, then use
        //internal cache. If no ID, then use the external variables
        //for this node module.
        if (id) {
            //Put the module in deep freeze until there is a
            //require call for it.
            defineCache[id] = [id, deps, factory];
        } else {
            runFactory(id, deps, factory);
        }
    }

    //define.require, which has access to all the values in the
    //cache. Useful for AMD modules that all have IDs in the file,
    //but need to finally export a value to node based on one of those
    //IDs.
    define.require = function (id) {
        if (loaderCache[id]) {
            return loaderCache[id];
        }

        if (defineCache[id]) {
            runFactory.apply(null, defineCache[id]);
            return loaderCache[id];
        }
    };

    define.amd = {};

    return define;
}

module.exports = amdefine;

}).call(this,require('_process'),"/node_modules/source-map/node_modules/amdefine/amdefine.js")
},{"_process":200,"path":199}],494:[function(require,module,exports){
/*!
	strip-json-comments
	Strip comments from JSON. Lets you use comments in your JSON files!
	https://github.com/sindresorhus/strip-json-comments
	by Sindre Sorhus
	MIT License
*/
(function () {
	'use strict';

	function stripJsonComments(str) {
		var currentChar;
		var nextChar;
		var insideString = false;
		var insideComment = false;
		var ret = '';

		for (var i = 0; i < str.length; i++) {
			currentChar = str[i];
			nextChar = str[i + 1];

			if (!insideComment && str[i - 1] !== '\\' && currentChar === '"') {
				insideString = !insideString;
			}

			if (insideString) {
				ret += currentChar;
				continue;
			}

			if (!insideComment && currentChar + nextChar === '//') {
				insideComment = 'single';
				i++;
			} else if (insideComment === 'single' && currentChar + nextChar === '\r\n') {
				insideComment = false;
				i++;
				ret += currentChar;
				ret += nextChar;
				continue;
			} else if (insideComment === 'single' && currentChar === '\n') {
				insideComment = false;
			} else if (!insideComment && currentChar + nextChar === '/*') {
				insideComment = 'multi';
				i++;
				continue;
			} else if (insideComment === 'multi' && currentChar + nextChar === '*/') {
				insideComment = false;
				i++;
				continue;
			}

			if (insideComment) {
				continue;
			}

			ret += currentChar;
		}

		return ret;
	}

	if (typeof module !== 'undefined' && module.exports) {
		module.exports = stripJsonComments;
	} else {
		window.stripJsonComments = stripJsonComments;
	}
})();

},{}],495:[function(require,module,exports){
'use strict';
module.exports = function toFastProperties(obj) {
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