mirror of https://github.com/webpack/webpack.git
622 lines
19 KiB
JavaScript
622 lines
19 KiB
JavaScript
/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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"use strict";
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const { SyncWaterfallHook } = require("tapable");
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const MainTemplate = require("../MainTemplate");
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const Template = require("../Template");
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const getEntryInfo = require("./JsonpHelpers").getEntryInfo;
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/** @typedef {import("../Compilation")} Compilation */
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/** @typedef {import("../MainTemplate")} MainTemplate */
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const mainTemplateHooksMap = new WeakMap();
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class JsonpMainTemplatePlugin {
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/**
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* @param {Compilation} compilation the compilation
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*/
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constructor(compilation) {
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this.compilation = compilation;
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}
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static getHooks(mainTemplate) {
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if (!(mainTemplate instanceof MainTemplate)) {
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throw new TypeError(
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"The 'mainTemplate' argument must be an instance of MainTemplate"
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);
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}
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let hooks = mainTemplateHooksMap.get(mainTemplate);
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if (hooks === undefined) {
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hooks = {
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jsonpScript: new SyncWaterfallHook(["source", "chunk", "hash"]),
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linkPreload: new SyncWaterfallHook(["source", "chunk", "hash"]),
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linkPrefetch: new SyncWaterfallHook(["source", "chunk", "hash"])
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};
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mainTemplateHooksMap.set(mainTemplate, hooks);
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}
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return hooks;
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}
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/**
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* @param {MainTemplate} mainTemplate the main template
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* @returns {void}
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*/
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apply(mainTemplate) {
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const needChunkOnDemandLoadingCode = chunk => {
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for (const chunkGroup of chunk.groupsIterable) {
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if (chunkGroup.getNumberOfChildren() > 0) return true;
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}
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return false;
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};
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const needChunkLoadingCode = chunk => {
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for (const chunkGroup of chunk.groupsIterable) {
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if (chunkGroup.chunks.length > 1) return true;
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if (chunkGroup.getNumberOfChildren() > 0) return true;
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}
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return false;
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};
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const needEntryDeferringCode = chunk => {
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for (const chunkGroup of chunk.groupsIterable) {
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if (chunkGroup.chunks.length > 1) return true;
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}
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return false;
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};
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const needPrefetchingCode = chunk => {
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const allPrefetchChunks = chunk.getChildIdsByOrdersMap(
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this.compilation.chunkGraph,
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true
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).prefetch;
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return allPrefetchChunks && Object.keys(allPrefetchChunks).length;
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};
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const getScriptSrcPath = (hash, chunk, chunkIdExpression) => {
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const chunkFilename = mainTemplate.outputOptions.chunkFilename;
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const chunkMaps = chunk.getChunkMaps();
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return mainTemplate.getAssetPath(JSON.stringify(chunkFilename), {
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hash: `" + ${mainTemplate.renderCurrentHashCode(hash)} + "`,
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hashWithLength: length =>
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`" + ${mainTemplate.renderCurrentHashCode(hash, length)} + "`,
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chunk: {
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id: `" + ${chunkIdExpression} + "`,
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hash: `" + ${JSON.stringify(
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chunkMaps.hash
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)}[${chunkIdExpression}] + "`,
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hashWithLength(length) {
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const shortChunkHashMap = Object.create(null);
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for (const chunkId of Object.keys(chunkMaps.hash)) {
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if (typeof chunkMaps.hash[chunkId] === "string") {
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shortChunkHashMap[chunkId] = chunkMaps.hash[chunkId].substr(
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0,
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length
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);
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}
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}
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return `" + ${JSON.stringify(
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shortChunkHashMap
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)}[${chunkIdExpression}] + "`;
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},
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name: `" + (${JSON.stringify(
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chunkMaps.name
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)}[${chunkIdExpression}]||${chunkIdExpression}) + "`,
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contentHash: {
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javascript: `" + ${JSON.stringify(
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chunkMaps.contentHash.javascript
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)}[${chunkIdExpression}] + "`
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},
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contentHashWithLength: {
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javascript: length => {
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const shortContentHashMap = {};
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const contentHash = chunkMaps.contentHash.javascript;
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for (const chunkId of Object.keys(contentHash)) {
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if (typeof contentHash[chunkId] === "string") {
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shortContentHashMap[chunkId] = contentHash[chunkId].substr(
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0,
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length
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);
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}
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}
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return `" + ${JSON.stringify(
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shortContentHashMap
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)}[${chunkIdExpression}] + "`;
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}
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}
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},
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contentHashType: "javascript"
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});
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};
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mainTemplate.hooks.localVars.tap(
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"JsonpMainTemplatePlugin",
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(source, chunk, hash) => {
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const extraCode = [];
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if (needChunkLoadingCode(chunk)) {
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extraCode.push(
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"",
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"// object to store loaded and loading chunks",
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"// undefined = chunk not loaded, null = chunk preloaded/prefetched",
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"// Promise = chunk loading, 0 = chunk loaded",
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"var installedChunks = {",
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Template.indent(
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chunk.ids.map(id => `${JSON.stringify(id)}: 0`).join(",\n")
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),
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"};",
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"",
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needEntryDeferringCode(chunk) ? "var deferredModules = [];" : ""
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);
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}
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if (needChunkOnDemandLoadingCode(chunk)) {
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extraCode.push(
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"",
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"// script path function",
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"function jsonpScriptSrc(chunkId) {",
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Template.indent([
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`return ${mainTemplate.requireFn}.p + ${getScriptSrcPath(
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hash,
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chunk,
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"chunkId"
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)}`
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]),
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"}"
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);
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}
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if (extraCode.length === 0) return source;
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return Template.asString([source, ...extraCode]);
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}
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);
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const mainTemplateHooks = JsonpMainTemplatePlugin.getHooks(mainTemplate);
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mainTemplateHooks.jsonpScript.tap(
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"JsonpMainTemplatePlugin",
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(_, chunk, hash) => {
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const crossOriginLoading =
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mainTemplate.outputOptions.crossOriginLoading;
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const chunkLoadTimeout = mainTemplate.outputOptions.chunkLoadTimeout;
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const jsonpScriptType = mainTemplate.outputOptions.jsonpScriptType;
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return Template.asString([
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"var script = document.createElement('script');",
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"var onScriptComplete;",
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jsonpScriptType
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? `script.type = ${JSON.stringify(jsonpScriptType)};`
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: "",
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"script.charset = 'utf-8';",
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`script.timeout = ${chunkLoadTimeout / 1000};`,
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`if (${mainTemplate.requireFn}.nc) {`,
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Template.indent(
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`script.setAttribute("nonce", ${mainTemplate.requireFn}.nc);`
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),
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"}",
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"script.src = jsonpScriptSrc(chunkId);",
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crossOriginLoading
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? Template.asString([
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"if (script.src.indexOf(window.location.origin + '/') !== 0) {",
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Template.indent(
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`script.crossOrigin = ${JSON.stringify(crossOriginLoading)};`
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),
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"}"
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])
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: "",
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"onScriptComplete = function (event) {",
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Template.indent([
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"// avoid mem leaks in IE.",
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"script.onerror = script.onload = null;",
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"clearTimeout(timeout);",
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"var chunk = installedChunks[chunkId];",
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"if(chunk !== 0) {",
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Template.indent([
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"if(chunk) {",
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Template.indent([
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"var errorType = event && (event.type === 'load' ? 'missing' : event.type);",
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"var realSrc = event && event.target && event.target.src;",
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"var error = new Error('Loading chunk ' + chunkId + ' failed.\\n(' + errorType + ': ' + realSrc + ')');",
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"error.type = errorType;",
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"error.request = realSrc;",
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"chunk[1](error);"
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]),
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"}",
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"installedChunks[chunkId] = undefined;"
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]),
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"}"
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]),
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"};",
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"var timeout = setTimeout(function(){",
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Template.indent([
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"onScriptComplete({ type: 'timeout', target: script });"
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]),
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`}, ${chunkLoadTimeout});`,
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"script.onerror = script.onload = onScriptComplete;"
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]);
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}
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);
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mainTemplateHooks.linkPreload.tap(
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"JsonpMainTemplatePlugin",
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(_, chunk, hash) => {
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const crossOriginLoading =
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mainTemplate.outputOptions.crossOriginLoading;
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const jsonpScriptType = mainTemplate.outputOptions.jsonpScriptType;
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return Template.asString([
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"var link = document.createElement('link');",
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jsonpScriptType
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? `link.type = ${JSON.stringify(jsonpScriptType)};`
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: "",
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"link.charset = 'utf-8';",
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`if (${mainTemplate.requireFn}.nc) {`,
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Template.indent(
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`link.setAttribute("nonce", ${mainTemplate.requireFn}.nc);`
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),
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"}",
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'link.rel = "preload";',
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'link.as = "script";',
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"link.href = jsonpScriptSrc(chunkId);",
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crossOriginLoading
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? Template.asString([
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"if (link.href.indexOf(window.location.origin + '/') !== 0) {",
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Template.indent(
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`link.crossOrigin = ${JSON.stringify(crossOriginLoading)};`
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),
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"}"
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])
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: ""
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]);
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}
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);
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mainTemplateHooks.linkPrefetch.tap(
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"JsonpMainTemplatePlugin",
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(_, chunk, hash) => {
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const crossOriginLoading =
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mainTemplate.outputOptions.crossOriginLoading;
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return Template.asString([
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"var link = document.createElement('link');",
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crossOriginLoading
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? `link.crossOrigin = ${JSON.stringify(crossOriginLoading)};`
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: "",
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`if (${mainTemplate.requireFn}.nc) {`,
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Template.indent(
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`link.setAttribute("nonce", ${mainTemplate.requireFn}.nc);`
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),
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"}",
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'link.rel = "prefetch";',
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'link.as = "script";',
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"link.href = jsonpScriptSrc(chunkId);"
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]);
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}
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);
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mainTemplate.hooks.requireEnsure.tap(
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"JsonpMainTemplatePlugin load",
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(source, chunkIdExpression, { chunk, hash }) => {
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return Template.asString([
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source,
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"",
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"// JSONP chunk loading for javascript",
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"",
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`var installedChunkData = installedChunks[${chunkIdExpression}];`,
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'if(installedChunkData !== 0) { // 0 means "already installed".',
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Template.indent([
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"",
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'// a Promise means "currently loading".',
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"if(installedChunkData) {",
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Template.indent(["promises.push(installedChunkData[2]);"]),
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"} else {",
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Template.indent([
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"// setup Promise in chunk cache",
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"var promise = new Promise(function(resolve, reject) {",
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Template.indent([
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`installedChunkData = installedChunks[${chunkIdExpression}] = [resolve, reject];`
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]),
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"});",
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"promises.push(installedChunkData[2] = promise);",
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"",
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"// start chunk loading",
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"var head = document.getElementsByTagName('head')[0];",
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mainTemplateHooks.jsonpScript.call("", chunk, hash),
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"head.appendChild(script);"
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]),
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"}"
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]),
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"}"
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]);
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}
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);
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mainTemplate.hooks.requireEnsure.tap(
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// TODO typing are broken
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/** @type {TODO} */ ({
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name: "JsonpMainTemplatePlugin preload",
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stage: 10
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}),
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(source, chunkIdExpression, { chunk, hash }) => {
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const chunkMap = chunk.getChildIdsByOrdersMap(
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this.compilation.chunkGraph
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).preload;
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if (!chunkMap || Object.keys(chunkMap).length === 0) return source;
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return Template.asString([
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source,
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"",
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"// chunk preloadng for javascript",
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"",
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`var chunkPreloadMap = ${JSON.stringify(chunkMap, null, "\t")};`,
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"",
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`var chunkPreloadData = chunkPreloadMap[${chunkIdExpression}];`,
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"if(chunkPreloadData) {",
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Template.indent([
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"var head = document.getElementsByTagName('head')[0];",
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"chunkPreloadData.forEach(function(chunkId) {",
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Template.indent([
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"if(installedChunks[chunkId] === undefined) {",
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Template.indent([
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"installedChunks[chunkId] = null;",
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mainTemplateHooks.linkPreload.call("", chunk, hash),
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"head.appendChild(link);"
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]),
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"}"
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]),
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"});"
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]),
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"}"
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]);
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}
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);
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mainTemplate.hooks.requireExtensions.tap(
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"JsonpMainTemplatePlugin",
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(source, { chunk }) => {
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if (!needChunkOnDemandLoadingCode(chunk)) return source;
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return Template.asString([
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source,
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"",
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"// on error function for async loading",
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`${
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mainTemplate.requireFn
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}.oe = function(err) { console.error(err); throw err; };`
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]);
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}
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);
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mainTemplate.hooks.bootstrap.tap(
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"JsonpMainTemplatePlugin",
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(source, moduleTemplate, renderContext) => {
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const { chunk, hash } = renderContext;
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if (needChunkLoadingCode(chunk)) {
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const withDefer = needEntryDeferringCode(chunk);
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const withPrefetch = needPrefetchingCode(chunk);
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return Template.asString([
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source,
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"",
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"// install a JSONP callback for chunk loading",
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"function webpackJsonpCallback(data) {",
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Template.indent([
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"var chunkIds = data[0];",
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"var moreModules = data[1];",
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withDefer ? "var executeModules = data[2];" : "",
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withPrefetch ? "var prefetchChunks = data[3] || [];" : "",
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'// add "moreModules" to the modules object,',
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'// then flag all "chunkIds" as loaded and fire callback',
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"var moduleId, chunkId, i = 0, resolves = [];",
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"for(;i < chunkIds.length; i++) {",
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Template.indent([
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"chunkId = chunkIds[i];",
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"if(installedChunks[chunkId]) {",
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Template.indent("resolves.push(installedChunks[chunkId][0]);"),
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"}",
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"installedChunks[chunkId] = 0;"
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]),
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"}",
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"for(moduleId in moreModules) {",
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Template.indent([
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"if(Object.prototype.hasOwnProperty.call(moreModules, moduleId)) {",
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Template.indent(
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mainTemplate.renderAddModule(
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"moduleId",
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"moreModules[moduleId]",
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renderContext
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)
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),
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"}"
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]),
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"}",
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"if(parentJsonpFunction) parentJsonpFunction(data);",
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withPrefetch
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? Template.asString([
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"// chunk prefetching for javascript",
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"var head = document.getElementsByTagName('head')[0];",
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"prefetchChunks.forEach(function(chunkId) {",
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Template.indent([
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"if(installedChunks[chunkId] === undefined) {",
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Template.indent([
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"installedChunks[chunkId] = null;",
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mainTemplateHooks.linkPrefetch.call("", chunk, hash),
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"head.appendChild(link);"
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]),
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"}"
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]),
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"});"
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])
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: "",
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"while(resolves.length) {",
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Template.indent("resolves.shift()();"),
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"}",
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withDefer
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? Template.asString([
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"",
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"// add entry modules from loaded chunk to deferred list",
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"deferredModules.push.apply(deferredModules, executeModules || []);",
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"",
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"// run deferred modules when all chunks ready",
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"return checkDeferredModules();"
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])
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: ""
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]),
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"};",
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withDefer
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? Template.asString([
|
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"function checkDeferredModules() {",
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Template.indent([
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"var result;",
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"for(var i = 0; i < deferredModules.length; i++) {",
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Template.indent([
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"var deferredModule = deferredModules[i];",
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"var fulfilled = true;",
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"for(var j = 1; j < deferredModule.length; j++) {",
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Template.indent([
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"var depId = deferredModule[j];",
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"if(installedChunks[depId] !== 0) fulfilled = false;"
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]),
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"}",
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"if(fulfilled) {",
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Template.indent([
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"deferredModules.splice(i--, 1);",
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"result = " +
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mainTemplate.requireFn +
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"(" +
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mainTemplate.requireFn +
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".s = deferredModule[0]);"
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]),
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"}"
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]),
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"}",
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"return result;"
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]),
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"}"
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])
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: ""
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]);
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}
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return source;
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}
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);
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mainTemplate.hooks.beforeStartup.tap(
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"JsonpMainTemplatePlugin",
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(source, chunk, hash) => {
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if (needChunkLoadingCode(chunk)) {
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var jsonpFunction = mainTemplate.outputOptions.jsonpFunction;
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var globalObject = mainTemplate.outputOptions.globalObject;
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return Template.asString([
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`var jsonpArray = ${globalObject}[${JSON.stringify(
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jsonpFunction
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)}] = ${globalObject}[${JSON.stringify(jsonpFunction)}] || [];`,
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"var oldJsonpFunction = jsonpArray.push.bind(jsonpArray);",
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"jsonpArray.push = webpackJsonpCallback;",
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"jsonpArray = jsonpArray.slice();",
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"for(var i = 0; i < jsonpArray.length; i++) webpackJsonpCallback(jsonpArray[i]);",
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"var parentJsonpFunction = oldJsonpFunction;",
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"",
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source
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]);
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}
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return source;
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}
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);
|
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mainTemplate.hooks.beforeStartup.tap(
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"JsonpMainTemplatePlugin",
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(source, chunk, hash) => {
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const chunkGraph = this.compilation.chunkGraph;
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const prefetchChunks = chunk.getChildIdsByOrders(chunkGraph).prefetch;
|
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if (
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needChunkLoadingCode(chunk) &&
|
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prefetchChunks &&
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prefetchChunks.length
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) {
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return Template.asString([
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source,
|
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`webpackJsonpCallback([[], {}, 0, ${JSON.stringify(
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prefetchChunks
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)}]);`
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]);
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}
|
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return source;
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}
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);
|
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mainTemplate.hooks.startup.tap(
|
|
"JsonpMainTemplatePlugin",
|
|
(source, { chunk, chunkGraph }) => {
|
|
if (needEntryDeferringCode(chunk)) {
|
|
if (chunkGraph.getNumberOfEntryModules(chunk) > 0) {
|
|
const entries = getEntryInfo(chunkGraph, chunk);
|
|
return Template.asString([
|
|
"// add entry module to deferred list",
|
|
`deferredModules.push(${entries
|
|
.map(e => JSON.stringify(e))
|
|
.join(", ")});`,
|
|
"// run deferred modules when ready",
|
|
"return checkDeferredModules();"
|
|
]);
|
|
} else {
|
|
return Template.asString([
|
|
"// run deferred modules from other chunks",
|
|
"checkDeferredModules();"
|
|
]);
|
|
}
|
|
}
|
|
return source;
|
|
}
|
|
);
|
|
mainTemplate.hooks.hotBootstrap.tap(
|
|
"JsonpMainTemplatePlugin",
|
|
(source, chunk, hash) => {
|
|
const globalObject = mainTemplate.outputOptions.globalObject;
|
|
const hotUpdateChunkFilename =
|
|
mainTemplate.outputOptions.hotUpdateChunkFilename;
|
|
const hotUpdateMainFilename =
|
|
mainTemplate.outputOptions.hotUpdateMainFilename;
|
|
const crossOriginLoading =
|
|
mainTemplate.outputOptions.crossOriginLoading;
|
|
const hotUpdateFunction = mainTemplate.outputOptions.hotUpdateFunction;
|
|
const currentHotUpdateChunkFilename = mainTemplate.getAssetPath(
|
|
JSON.stringify(hotUpdateChunkFilename),
|
|
{
|
|
hash: `" + ${mainTemplate.renderCurrentHashCode(hash)} + "`,
|
|
hashWithLength: length =>
|
|
`" + ${mainTemplate.renderCurrentHashCode(hash, length)} + "`,
|
|
chunk: {
|
|
id: '" + chunkId + "'
|
|
}
|
|
}
|
|
);
|
|
const currentHotUpdateMainFilename = mainTemplate.getAssetPath(
|
|
JSON.stringify(hotUpdateMainFilename),
|
|
{
|
|
hash: `" + ${mainTemplate.renderCurrentHashCode(hash)} + "`,
|
|
hashWithLength: length =>
|
|
`" + ${mainTemplate.renderCurrentHashCode(hash, length)} + "`
|
|
}
|
|
);
|
|
const runtimeSource = Template.getFunctionContent(
|
|
require("./JsonpMainTemplate.runtime")
|
|
)
|
|
.replace(/\/\/\$semicolon/g, ";")
|
|
.replace(/\$require\$/g, mainTemplate.requireFn)
|
|
.replace(
|
|
/\$crossOriginLoading\$/g,
|
|
crossOriginLoading
|
|
? `script.crossOrigin = ${JSON.stringify(crossOriginLoading)}`
|
|
: ""
|
|
)
|
|
.replace(/\$hotMainFilename\$/g, currentHotUpdateMainFilename)
|
|
.replace(/\$hotChunkFilename\$/g, currentHotUpdateChunkFilename)
|
|
.replace(/\$hash\$/g, JSON.stringify(hash));
|
|
return `${source}
|
|
function hotDisposeChunk(chunkId) {
|
|
delete installedChunks[chunkId];
|
|
}
|
|
var parentHotUpdateCallback = ${globalObject}[${JSON.stringify(
|
|
hotUpdateFunction
|
|
)}];
|
|
${globalObject}[${JSON.stringify(hotUpdateFunction)}] = ${runtimeSource}`;
|
|
}
|
|
);
|
|
mainTemplate.hooks.hash.tap("JsonpMainTemplatePlugin", hash => {
|
|
hash.update("jsonp");
|
|
hash.update("5");
|
|
hash.update(`${mainTemplate.outputOptions.globalObject}`);
|
|
hash.update(`${mainTemplate.outputOptions.chunkFilename}`);
|
|
hash.update(`${mainTemplate.outputOptions.jsonpFunction}`);
|
|
hash.update(`${mainTemplate.outputOptions.hotUpdateFunction}`);
|
|
});
|
|
}
|
|
}
|
|
module.exports = JsonpMainTemplatePlugin;
|