pro-docs/libs/codemirror/addon/tern/worker.js

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

// declare global: tern, server

var server

this.onmessage = function (e) {
    var data = e.data
    switch (data.type) {
        case 'init':
            return startServer(data.defs, data.plugins, data.scripts)
        case 'add':
            return server.addFile(data.name, data.text)
        case 'del':
            return server.delFile(data.name)
        case 'req':
            return server.request(data.body, function (err, reqData) {
                postMessage({ id: data.id, body: reqData, err: err && String(err) })
            })
        case 'getFile':
            var c = pending[data.id]
            delete pending[data.id]
            return c(data.err, data.text)
        default:
            throw new Error('Unknown message type: ' + data.type)
    }
}

var nextId = 0,
    pending = {}
function getFile(file, c) {
    postMessage({ type: 'getFile', name: file, id: ++nextId })
    pending[nextId] = c
}

function startServer(defs, plugins, scripts) {
    if (scripts) importScripts.apply(null, scripts)

    server = new tern.Server({
        getFile: getFile,
        async: true,
        defs: defs,
        plugins: plugins,
    })
}

this.console = {
    log: function (v) {
        postMessage({ type: 'debug', message: v })
    },
}