Edit File: NodeMainTemplatePlugin.js
/* MIT License http://www.opensource.org/licenses/mit-license.php Author Tobias Koppers @sokra */ "use strict"; const Template = require("../Template"); module.exports = class NodeMainTemplatePlugin { constructor(asyncChunkLoading) { this.asyncChunkLoading = asyncChunkLoading; } apply(mainTemplate) { const asyncChunkLoading = this.asyncChunkLoading; mainTemplate.plugin("local-vars", function(source, chunk) { if(chunk.chunks.length > 0) { return this.asString([ source, "", "// object to store loaded chunks", "// \"0\" means \"already loaded\"", "var installedChunks = {", this.indent(chunk.ids.map((id) => `${id}: 0`).join(",\n")), "};" ]); } return source; }); mainTemplate.plugin("require-extensions", function(source, chunk) { if(chunk.chunks.length > 0) { return this.asString([ source, "", "// uncatched error handler for webpack runtime", `${this.requireFn}.oe = function(err) {`, this.indent([ "process.nextTick(function() {", this.indent("throw err; // catch this error by using System.import().catch()"), "});" ]), "};" ]); } return source; }); mainTemplate.plugin("require-ensure", function(_, chunk, hash) { const chunkFilename = this.outputOptions.chunkFilename; const chunkMaps = chunk.getChunkMaps(); const insertMoreModules = [ "var moreModules = chunk.modules, chunkIds = chunk.ids;", "for(var moduleId in moreModules) {", this.indent(this.renderAddModule(hash, chunk, "moduleId", "moreModules[moduleId]")), "}" ]; if(asyncChunkLoading) { return this.asString([ "// \"0\" is the signal for \"already loaded\"", "if(installedChunks[chunkId] === 0)", this.indent([ "return Promise.resolve();" ]), "// array of [resolve, reject, promise] means \"currently loading\"", "if(installedChunks[chunkId])", this.indent([ "return installedChunks[chunkId][2];" ]), "// load the chunk and return promise to it", "var promise = new Promise(function(resolve, reject) {", this.indent([ "installedChunks[chunkId] = [resolve, reject];", "var filename = __dirname + " + this.applyPluginsWaterfall("asset-path", JSON.stringify(`/${chunkFilename}`), { hash: `" + ${this.renderCurrentHashCode(hash)} + "`, hashWithLength: (length) => `" + ${this.renderCurrentHashCode(hash, length)} + "`, chunk: { id: "\" + chunkId + \"", hash: `" + ${JSON.stringify(chunkMaps.hash)}[chunkId] + "`, hashWithLength: (length) => { const shortChunkHashMap = {}; Object.keys(chunkMaps.hash).forEach((chunkId) => { if(typeof chunkMaps.hash[chunkId] === "string") shortChunkHashMap[chunkId] = chunkMaps.hash[chunkId].substr(0, length); }); return `" + ${JSON.stringify(shortChunkHashMap)}[chunkId] + "`; }, name: `" + (${JSON.stringify(chunkMaps.name)}[chunkId]||chunkId) + "` } }) + ";", "require('fs').readFile(filename, 'utf-8', function(err, content) {", this.indent([ "if(err) return reject(err);", "var chunk = {};", "require('vm').runInThisContext('(function(exports, require, __dirname, __filename) {' + content + '\\n})', filename)" + "(chunk, require, require('path').dirname(filename), filename);" ].concat(insertMoreModules).concat([ "var callbacks = [];", "for(var i = 0; i < chunkIds.length; i++) {", this.indent([ "if(installedChunks[chunkIds[i]])", this.indent([ "callbacks = callbacks.concat(installedChunks[chunkIds[i]][0]);" ]), "installedChunks[chunkIds[i]] = 0;" ]), "}", "for(i = 0; i < callbacks.length; i++)", this.indent("callbacks[i]();") ])), "});" ]), "});", "return installedChunks[chunkId][2] = promise;" ]); } else { const request = this.applyPluginsWaterfall("asset-path", JSON.stringify(`./${chunkFilename}`), { hash: `" + ${this.renderCurrentHashCode(hash)} + "`, hashWithLength: (length) => `" + ${this.renderCurrentHashCode(hash, length)} + "`, chunk: { id: "\" + chunkId + \"", hash: `" + ${JSON.stringify(chunkMaps.hash)}[chunkId] + "`, hashWithLength: (length) => { const shortChunkHashMap = {}; Object.keys(chunkMaps.hash).forEach((chunkId) => { if(typeof chunkMaps.hash[chunkId] === "string") shortChunkHashMap[chunkId] = chunkMaps.hash[chunkId].substr(0, length); }); return `" + ${JSON.stringify(shortChunkHashMap)}[chunkId] + "`; }, name: `" + (${JSON.stringify(chunkMaps.name)}[chunkId]||chunkId) + "` } }); return this.asString([ "// \"0\" is the signal for \"already loaded\"", "if(installedChunks[chunkId] !== 0) {", this.indent([ `var chunk = require(${request});` ].concat(insertMoreModules).concat([ "for(var i = 0; i < chunkIds.length; i++)", this.indent("installedChunks[chunkIds[i]] = 0;") ])), "}", "return Promise.resolve();" ]); } }); mainTemplate.plugin("hot-bootstrap", function(source, chunk, hash) { const hotUpdateChunkFilename = this.outputOptions.hotUpdateChunkFilename; const hotUpdateMainFilename = this.outputOptions.hotUpdateMainFilename; const chunkMaps = chunk.getChunkMaps(); const currentHotUpdateChunkFilename = this.applyPluginsWaterfall("asset-path", JSON.stringify(hotUpdateChunkFilename), { hash: `" + ${this.renderCurrentHashCode(hash)} + "`, hashWithLength: (length) => `" + ${this.renderCurrentHashCode(hash, length)} + "`, chunk: { id: "\" + chunkId + \"", hash: `" + ${JSON.stringify(chunkMaps.hash)}[chunkId] + "`, hashWithLength: (length) => { const shortChunkHashMap = {}; Object.keys(chunkMaps.hash).forEach((chunkId) => { if(typeof chunkMaps.hash[chunkId] === "string") shortChunkHashMap[chunkId] = chunkMaps.hash[chunkId].substr(0, length); }); return `" + ${JSON.stringify(shortChunkHashMap)}[chunkId] + "`; }, name: `" + (${JSON.stringify(chunkMaps.name)}[chunkId]||chunkId) + "` } }); const currentHotUpdateMainFilename = this.applyPluginsWaterfall("asset-path", JSON.stringify(hotUpdateMainFilename), { hash: `" + ${this.renderCurrentHashCode(hash)} + "`, hashWithLength: (length) => `" + ${this.renderCurrentHashCode(hash, length)} + "` }); return Template.getFunctionContent(asyncChunkLoading ? require("./NodeMainTemplateAsync.runtime.js") : require("./NodeMainTemplate.runtime.js")) .replace(/\$require\$/g, this.requireFn) .replace(/\$hotMainFilename\$/g, currentHotUpdateMainFilename) .replace(/\$hotChunkFilename\$/g, currentHotUpdateChunkFilename); }); mainTemplate.plugin("hash", function(hash) { hash.update("node"); hash.update("3"); hash.update(this.outputOptions.filename + ""); hash.update(this.outputOptions.chunkFilename + ""); }); } };
Back to File Manager