pro-docs/libs/codemirror/addon/lint/json-lint.js

// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

// Depends on jsonlint.js from https://github.com/zaach/jsonlint

// declare global: jsonlint

;(function (mod) {
    if (typeof exports == 'object' && typeof module == 'object')
        // CommonJS
        mod(require('../../lib/codemirror'))
    else if (typeof define == 'function' && define.amd)
        // AMD
        define(['../../lib/codemirror'], mod)
    // Plain browser env
    else mod(CodeMirror)
})(function (CodeMirror) {
    'use strict'

    CodeMirror.registerHelper('lint', 'json', function (text) {
        var found = []
        if (!window.jsonlint) {
            if (window.console) {
                window.console.error('Error: window.jsonlint not defined, CodeMirror JSON linting cannot run.')
            }
            return found
        }
        // for jsonlint's web dist jsonlint is exported as an object with a single property parser, of which parseError
        // is a subproperty
        var jsonlint = window.jsonlint.parser || window.jsonlint
        jsonlint.parseError = function (str, hash) {
            var loc = hash.loc
            found.push({ from: CodeMirror.Pos(loc.first_line - 1, loc.first_column), to: CodeMirror.Pos(loc.last_line - 1, loc.last_column), message: str })
        }
        try {
            jsonlint.parse(text)
        } catch (e) {}
        return found
    })
})