| 1 | /*
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| 2 | MIT License http://www.opensource.org/licenses/mit-license.php
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| 3 | */
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| 4 |
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| 5 | "use strict";
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| 6 |
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| 7 | const { SyncWaterfallHook } = require("tapable");
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| 8 | const Compilation = require("../Compilation");
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| 9 | const RuntimeGlobals = require("../RuntimeGlobals");
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| 10 | const RuntimeModule = require("../RuntimeModule");
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| 11 | const Template = require("../Template");
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| 12 | const {
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| 13 | generateJavascriptHMR
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| 14 | } = require("../hmr/JavascriptHotModuleReplacementHelper");
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| 15 | const chunkHasJs = require("../javascript/JavascriptModulesPlugin").chunkHasJs;
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| 16 | const { getInitialChunkIds } = require("../javascript/StartupHelpers");
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| 17 | const compileBooleanMatcher = require("../util/compileBooleanMatcher");
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| 18 |
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| 19 | /** @typedef {import("../Chunk")} Chunk */
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| 20 | /** @typedef {import("../ChunkGraph")} ChunkGraph */
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| 21 | /** @typedef {import("../Module").ReadOnlyRuntimeRequirements} ReadOnlyRuntimeRequirements */
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| 22 |
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| 23 | /**
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| 24 | * @typedef {object} JsonpCompilationPluginHooks
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| 25 | * @property {SyncWaterfallHook<[string, Chunk]>} linkPreload
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| 26 | * @property {SyncWaterfallHook<[string, Chunk]>} linkPrefetch
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| 27 | */
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| 28 |
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| 29 | /** @type {WeakMap<Compilation, JsonpCompilationPluginHooks>} */
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| 30 | const compilationHooksMap = new WeakMap();
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| 31 |
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| 32 | class JsonpChunkLoadingRuntimeModule extends RuntimeModule {
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| 33 | /**
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| 34 | * @param {Compilation} compilation the compilation
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| 35 | * @returns {JsonpCompilationPluginHooks} hooks
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| 36 | */
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| 37 | static getCompilationHooks(compilation) {
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| 38 | if (!(compilation instanceof Compilation)) {
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| 39 | throw new TypeError(
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| 40 | "The 'compilation' argument must be an instance of Compilation"
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| 41 | );
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| 42 | }
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| 43 | let hooks = compilationHooksMap.get(compilation);
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| 44 | if (hooks === undefined) {
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| 45 | hooks = {
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| 46 | linkPreload: new SyncWaterfallHook(["source", "chunk"]),
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| 47 | linkPrefetch: new SyncWaterfallHook(["source", "chunk"])
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| 48 | };
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| 49 | compilationHooksMap.set(compilation, hooks);
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| 50 | }
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| 51 | return hooks;
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| 52 | }
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| 53 |
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| 54 | /**
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| 55 | * @param {ReadOnlyRuntimeRequirements} runtimeRequirements runtime requirements
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| 56 | */
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| 57 | constructor(runtimeRequirements) {
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| 58 | super("jsonp chunk loading", RuntimeModule.STAGE_ATTACH);
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| 59 | /** @type {ReadOnlyRuntimeRequirements} */
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| 60 | this._runtimeRequirements = runtimeRequirements;
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| 61 | }
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| 62 |
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| 63 | /**
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| 64 | * @private
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| 65 | * @param {Chunk} chunk chunk
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| 66 | * @returns {string} generated code
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| 67 | */
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| 68 | _generateBaseUri(chunk) {
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| 69 | const options = chunk.getEntryOptions();
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| 70 | if (options && options.baseUri) {
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| 71 | return `${RuntimeGlobals.baseURI} = ${JSON.stringify(options.baseUri)};`;
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| 72 | }
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| 73 | return `${RuntimeGlobals.baseURI} = (typeof document !== 'undefined' && document.baseURI) || self.location.href;`;
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| 74 | }
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| 75 |
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| 76 | /**
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| 77 | * Generates runtime code for this runtime module.
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| 78 | * @returns {string | null} runtime code
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| 79 | */
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| 80 | generate() {
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| 81 | const compilation = /** @type {Compilation} */ (this.compilation);
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| 82 | const {
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| 83 | runtimeTemplate,
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| 84 | outputOptions: {
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| 85 | chunkLoadingGlobal,
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| 86 | hotUpdateGlobal,
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| 87 | crossOriginLoading,
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| 88 | scriptType,
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| 89 | charset
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| 90 | }
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| 91 | } = compilation;
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| 92 | const globalObject = runtimeTemplate.globalObject;
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| 93 | const { linkPreload, linkPrefetch } =
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| 94 | JsonpChunkLoadingRuntimeModule.getCompilationHooks(compilation);
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| 95 | const fn = RuntimeGlobals.ensureChunkHandlers;
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| 96 | const withBaseURI = this._runtimeRequirements.has(RuntimeGlobals.baseURI);
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| 97 | const withLoading = this._runtimeRequirements.has(
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| 98 | RuntimeGlobals.ensureChunkHandlers
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| 99 | );
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| 100 | const withCallback = this._runtimeRequirements.has(
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| 101 | RuntimeGlobals.chunkCallback
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| 102 | );
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| 103 | const withOnChunkLoad = this._runtimeRequirements.has(
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| 104 | RuntimeGlobals.onChunksLoaded
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| 105 | );
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| 106 | const withHmr = this._runtimeRequirements.has(
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| 107 | RuntimeGlobals.hmrDownloadUpdateHandlers
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| 108 | );
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| 109 | const withHmrManifest = this._runtimeRequirements.has(
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| 110 | RuntimeGlobals.hmrDownloadManifest
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| 111 | );
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| 112 | const withFetchPriority = this._runtimeRequirements.has(
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| 113 | RuntimeGlobals.hasFetchPriority
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| 114 | );
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| 115 | const chunkLoadingGlobalExpr = `${globalObject}[${JSON.stringify(
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| 116 | chunkLoadingGlobal
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| 117 | )}]`;
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| 118 | const chunkGraph = /** @type {ChunkGraph} */ (this.chunkGraph);
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| 119 | const chunk = /** @type {Chunk} */ (this.chunk);
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| 120 | const withPrefetch =
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| 121 | this._runtimeRequirements.has(RuntimeGlobals.prefetchChunkHandlers) &&
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| 122 | chunk.hasChildByOrder(chunkGraph, "prefetch", true, chunkHasJs);
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| 123 | const withPreload =
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| 124 | this._runtimeRequirements.has(RuntimeGlobals.preloadChunkHandlers) &&
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| 125 | chunk.hasChildByOrder(chunkGraph, "preload", true, chunkHasJs);
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| 126 | const conditionMap = chunkGraph.getChunkConditionMap(chunk, chunkHasJs);
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| 127 | const hasJsMatcher = compileBooleanMatcher(conditionMap);
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| 128 | const initialChunkIds = getInitialChunkIds(chunk, chunkGraph, chunkHasJs);
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| 129 |
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| 130 | const stateExpression = withHmr
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| 131 | ? `${RuntimeGlobals.hmrRuntimeStatePrefix}_jsonp`
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| 132 | : undefined;
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| 133 |
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| 134 | return Template.asString([
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| 135 | withBaseURI ? this._generateBaseUri(chunk) : "// no baseURI",
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| 136 | "",
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| 137 | "// object to store loaded and loading chunks",
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| 138 | "// undefined = chunk not loaded, null = chunk preloaded/prefetched",
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| 139 | "// [resolve, reject, Promise] = chunk loading, 0 = chunk loaded",
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| 140 | `var installedChunks = ${
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| 141 | stateExpression ? `${stateExpression} = ${stateExpression} || ` : ""
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| 142 | }{`,
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| 143 | Template.indent(
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| 144 | Array.from(initialChunkIds, (id) => `${JSON.stringify(id)}: 0`).join(
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| 145 | ",\n"
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| 146 | )
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| 147 | ),
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| 148 | "};",
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| 149 | "",
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| 150 | withLoading
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| 151 | ? Template.asString([
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| 152 | `${fn}.j = ${runtimeTemplate.basicFunction(
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| 153 | `chunkId, promises${withFetchPriority ? ", fetchPriority" : ""}`,
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| 154 | hasJsMatcher !== false
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| 155 | ? Template.indent([
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| 156 | "// JSONP chunk loading for javascript",
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| 157 | `var installedChunkData = ${RuntimeGlobals.hasOwnProperty}(installedChunks, chunkId) ? installedChunks[chunkId] : undefined;`,
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| 158 | 'if(installedChunkData !== 0) { // 0 means "already installed".',
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| 159 | Template.indent([
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| 160 | "",
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| 161 | '// a Promise means "currently loading".',
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| 162 | "if(installedChunkData) {",
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| 163 | Template.indent([
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| 164 | "promises.push(installedChunkData[2]);"
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| 165 | ]),
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| 166 | "} else {",
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| 167 | Template.indent([
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| 168 | hasJsMatcher === true
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| 169 | ? "if(true) { // all chunks have JS"
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| 170 | : `if(${hasJsMatcher("chunkId")}) {`,
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| 171 | Template.indent([
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| 172 | "// setup Promise in chunk cache",
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| 173 | `var promise = new Promise(${runtimeTemplate.expressionFunction(
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| 174 | "installedChunkData = installedChunks[chunkId] = [resolve, reject]",
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| 175 | "resolve, reject"
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| 176 | )});`,
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| 177 | "promises.push(installedChunkData[2] = promise);",
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| 178 | "",
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| 179 | "// start chunk loading",
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| 180 | `var url = ${RuntimeGlobals.publicPath} + ${RuntimeGlobals.getChunkScriptFilename}(chunkId);`,
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| 181 | "// create error before stack unwound to get useful stacktrace later",
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| 182 | "var error = new Error();",
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| 183 | `var loadingEnded = ${runtimeTemplate.basicFunction(
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| 184 | "event",
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| 185 | [
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| 186 | `if(${RuntimeGlobals.hasOwnProperty}(installedChunks, chunkId)) {`,
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| 187 | Template.indent([
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| 188 | "installedChunkData = installedChunks[chunkId];",
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| 189 | "if(installedChunkData !== 0) installedChunks[chunkId] = undefined;",
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| 190 | "if(installedChunkData) {",
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| 191 | Template.indent([
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| 192 | "var errorType = event && (event.type === 'load' ? 'missing' : event.type);",
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| 193 | "var realSrc = event && event.target && event.target.src;",
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| 194 | "error.message = 'Loading chunk ' + chunkId + ' failed.\\n(' + errorType + ': ' + realSrc + ')';",
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| 195 | "error.name = 'ChunkLoadError';",
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| 196 | "error.type = errorType;",
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| 197 | "error.request = realSrc;",
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| 198 | "installedChunkData[1](error);"
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| 199 | ]),
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| 200 | "}"
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| 201 | ]),
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| 202 | "}"
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| 203 | ]
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| 204 | )};`,
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| 205 | `${
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| 206 | RuntimeGlobals.loadScript
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| 207 | }(url, loadingEnded, "chunk-" + chunkId, chunkId${
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| 208 | withFetchPriority ? ", fetchPriority" : ""
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| 209 | });`
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| 210 | ]),
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| 211 | hasJsMatcher === true
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| 212 | ? "}"
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| 213 | : "} else installedChunks[chunkId] = 0;"
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| 214 | ]),
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| 215 | "}"
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| 216 | ]),
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| 217 | "}"
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| 218 | ])
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| 219 | : Template.indent(["installedChunks[chunkId] = 0;"])
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| 220 | )};`
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| 221 | ])
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| 222 | : "// no chunk on demand loading",
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| 223 | "",
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| 224 | withPrefetch && hasJsMatcher !== false
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| 225 | ? `${
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| 226 | RuntimeGlobals.prefetchChunkHandlers
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| 227 | }.j = ${runtimeTemplate.basicFunction("chunkId", [
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| 228 | `if((!${
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| 229 | RuntimeGlobals.hasOwnProperty
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| 230 | }(installedChunks, chunkId) || installedChunks[chunkId] === undefined) && ${
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| 231 | hasJsMatcher === true ? "true" : hasJsMatcher("chunkId")
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| 232 | }) {`,
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| 233 | Template.indent([
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| 234 | "installedChunks[chunkId] = null;",
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| 235 | linkPrefetch.call(
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| 236 | Template.asString([
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| 237 | "var link = document.createElement('link');",
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| 238 | charset ? "link.charset = 'utf-8';" : "",
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| 239 | crossOriginLoading
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| 240 | ? `link.crossOrigin = ${JSON.stringify(
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| 241 | crossOriginLoading
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| 242 | )};`
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| 243 | : "",
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| 244 | `if (${RuntimeGlobals.scriptNonce}) {`,
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| 245 | Template.indent(
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| 246 | `link.setAttribute("nonce", ${RuntimeGlobals.scriptNonce});`
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| 247 | ),
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| 248 | "}",
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| 249 | 'link.rel = "prefetch";',
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| 250 | 'link.as = "script";',
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| 251 | `link.href = ${RuntimeGlobals.publicPath} + ${RuntimeGlobals.getChunkScriptFilename}(chunkId);`
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| 252 | ]),
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| 253 | chunk
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| 254 | ),
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| 255 | "document.head.appendChild(link);"
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| 256 | ]),
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| 257 | "}"
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| 258 | ])};`
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| 259 | : "// no prefetching",
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| 260 | "",
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| 261 | withPreload && hasJsMatcher !== false
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| 262 | ? `${
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| 263 | RuntimeGlobals.preloadChunkHandlers
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| 264 | }.j = ${runtimeTemplate.basicFunction("chunkId", [
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| 265 | `if((!${
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| 266 | RuntimeGlobals.hasOwnProperty
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| 267 | }(installedChunks, chunkId) || installedChunks[chunkId] === undefined) && ${
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| 268 | hasJsMatcher === true ? "true" : hasJsMatcher("chunkId")
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| 269 | }) {`,
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| 270 | Template.indent([
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| 271 | "installedChunks[chunkId] = null;",
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| 272 | linkPreload.call(
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| 273 | Template.asString([
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| 274 | "var link = document.createElement('link');",
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| 275 | scriptType && scriptType !== "module"
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| 276 | ? `link.type = ${JSON.stringify(scriptType)};`
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| 277 | : "",
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| 278 | charset ? "link.charset = 'utf-8';" : "",
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| 279 | `if (${RuntimeGlobals.scriptNonce}) {`,
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| 280 | Template.indent(
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| 281 | `link.setAttribute("nonce", ${RuntimeGlobals.scriptNonce});`
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| 282 | ),
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| 283 | "}",
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| 284 | scriptType === "module"
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| 285 | ? 'link.rel = "modulepreload";'
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| 286 | : 'link.rel = "preload";',
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| 287 | scriptType === "module" ? "" : 'link.as = "script";',
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| 288 | `link.href = ${RuntimeGlobals.publicPath} + ${RuntimeGlobals.getChunkScriptFilename}(chunkId);`,
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| 289 | crossOriginLoading
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| 290 | ? crossOriginLoading === "use-credentials"
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| 291 | ? 'link.crossOrigin = "use-credentials";'
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| 292 | : Template.asString([
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| 293 | "if (link.href.indexOf(window.location.origin + '/') !== 0) {",
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| 294 | Template.indent(
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| 295 | `link.crossOrigin = ${JSON.stringify(
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| 296 | crossOriginLoading
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| 297 | )};`
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| 298 | ),
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| 299 | "}"
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| 300 | ])
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| 301 | : ""
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| 302 | ]),
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| 303 | chunk
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| 304 | ),
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| 305 | "document.head.appendChild(link);"
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| 306 | ]),
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| 307 | "}"
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| 308 | ])};`
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| 309 | : "// no preloaded",
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| 310 | "",
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| 311 | withHmr
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| 312 | ? Template.asString([
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| 313 | "var currentUpdatedModulesList;",
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| 314 | "var waitingUpdateResolves = {};",
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| 315 | "function loadUpdateChunk(chunkId, updatedModulesList) {",
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| 316 | Template.indent([
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| 317 | "currentUpdatedModulesList = updatedModulesList;",
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| 318 | `return new Promise(${runtimeTemplate.basicFunction(
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| 319 | "resolve, reject",
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| 320 | [
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| 321 | "waitingUpdateResolves[chunkId] = resolve;",
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| 322 | "// start update chunk loading",
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| 323 | `var url = ${RuntimeGlobals.publicPath} + ${RuntimeGlobals.getChunkUpdateScriptFilename}(chunkId);`,
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| 324 | "// create error before stack unwound to get useful stacktrace later",
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| 325 | "var error = new Error();",
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| 326 | `var loadingEnded = ${runtimeTemplate.basicFunction("event", [
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| 327 | "if(waitingUpdateResolves[chunkId]) {",
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| 328 | Template.indent([
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| 329 | "waitingUpdateResolves[chunkId] = undefined",
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| 330 | "var errorType = event && (event.type === 'load' ? 'missing' : event.type);",
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| 331 | "var realSrc = event && event.target && event.target.src;",
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| 332 | "error.message = 'Loading hot update chunk ' + chunkId + ' failed.\\n(' + errorType + ': ' + realSrc + ')';",
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| 333 | "error.name = 'ChunkLoadError';",
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| 334 | "error.type = errorType;",
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| 335 | "error.request = realSrc;",
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| 336 | "reject(error);"
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| 337 | ]),
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| 338 | "}"
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| 339 | ])};`,
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| 340 | `${RuntimeGlobals.loadScript}(url, loadingEnded);`
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| 341 | ]
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| 342 | )});`
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| 343 | ]),
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| 344 | "}",
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| 345 | "",
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| 346 | `${globalObject}[${JSON.stringify(
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| 347 | hotUpdateGlobal
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| 348 | )}] = ${runtimeTemplate.basicFunction(
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| 349 | "chunkId, moreModules, runtime",
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| 350 | [
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| 351 | "for(var moduleId in moreModules) {",
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| 352 | Template.indent([
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| 353 | `if(${RuntimeGlobals.hasOwnProperty}(moreModules, moduleId)) {`,
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| 354 | Template.indent([
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| 355 | "currentUpdate[moduleId] = moreModules[moduleId];",
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| 356 | "if(currentUpdatedModulesList) currentUpdatedModulesList.push(moduleId);"
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| 357 | ]),
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| 358 | "}"
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| 359 | ]),
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| 360 | "}",
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| 361 | "if(runtime) currentUpdateRuntime.push(runtime);",
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| 362 | "if(waitingUpdateResolves[chunkId]) {",
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| 363 | Template.indent([
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| 364 | "waitingUpdateResolves[chunkId]();",
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| 365 | "waitingUpdateResolves[chunkId] = undefined;"
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| 366 | ]),
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| 367 | "}"
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| 368 | ]
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| 369 | )};`,
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| 370 | "",
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| 371 | generateJavascriptHMR("jsonp")
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| 372 | ])
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| 373 | : "// no HMR",
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| 374 | "",
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| 375 | withHmrManifest
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| 376 | ? Template.asString([
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| 377 | `${
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| 378 | RuntimeGlobals.hmrDownloadManifest
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| 379 | } = ${runtimeTemplate.basicFunction("", [
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| 380 | 'if (typeof fetch === "undefined") throw new Error("No browser support: need fetch API");',
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| 381 | `return fetch(${RuntimeGlobals.publicPath} + ${
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| 382 | RuntimeGlobals.getUpdateManifestFilename
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| 383 | }()).then(${runtimeTemplate.basicFunction("response", [
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| 384 | "if(response.status === 404) return; // no update available",
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| 385 | 'if(!response.ok) throw new Error("Failed to fetch update manifest " + response.statusText);',
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| 386 | "return response.json();"
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| 387 | ])});`
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| 388 | ])};`
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| 389 | ])
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| 390 | : "// no HMR manifest",
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| 391 | "",
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| 392 | withOnChunkLoad
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| 393 | ? `${
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| 394 | RuntimeGlobals.onChunksLoaded
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| 395 | }.j = ${runtimeTemplate.returningFunction(
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| 396 | "installedChunks[chunkId] === 0",
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| 397 | "chunkId"
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| 398 | )};`
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| 399 | : "// no on chunks loaded",
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| 400 | "",
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| 401 | withCallback || withLoading
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| 402 | ? Template.asString([
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| 403 | "// install a JSONP callback for chunk loading",
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| 404 | `var webpackJsonpCallback = ${runtimeTemplate.basicFunction(
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| 405 | "parentChunkLoadingFunction, data",
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| 406 | [
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| 407 | runtimeTemplate.destructureArray(
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| 408 | ["chunkIds", "moreModules", "runtime"],
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| 409 | "data"
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| 410 | ),
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| 411 | '// add "moreModules" to the modules object,',
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| 412 | '// then flag all "chunkIds" as loaded and fire callback',
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| 413 | "var moduleId, chunkId, i = 0;",
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| 414 | `if(chunkIds.some(${runtimeTemplate.returningFunction(
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| 415 | "installedChunks[id] !== 0",
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| 416 | "id"
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| 417 | )})) {`,
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| 418 | Template.indent([
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| 419 | "for(moduleId in moreModules) {",
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| 420 | Template.indent([
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| 421 | `if(${RuntimeGlobals.hasOwnProperty}(moreModules, moduleId)) {`,
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| 422 | Template.indent(
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| 423 | `${RuntimeGlobals.moduleFactories}[moduleId] = moreModules[moduleId];`
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| 424 | ),
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| 425 | "}"
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| 426 | ]),
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| 427 | "}",
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| 428 | `if(runtime) var result = runtime(${RuntimeGlobals.require});`
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| 429 | ]),
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| 430 | "}",
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| 431 | "if(parentChunkLoadingFunction) parentChunkLoadingFunction(data);",
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| 432 | "for(;i < chunkIds.length; i++) {",
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| 433 | Template.indent([
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| 434 | "chunkId = chunkIds[i];",
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| 435 | `if(${RuntimeGlobals.hasOwnProperty}(installedChunks, chunkId) && installedChunks[chunkId]) {`,
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| 436 | Template.indent("installedChunks[chunkId][0]();"),
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| 437 | "}",
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| 438 | "installedChunks[chunkId] = 0;"
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| 439 | ]),
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| 440 | "}",
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| 441 | withOnChunkLoad
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| 442 | ? `return ${RuntimeGlobals.onChunksLoaded}(result);`
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| 443 | : ""
|
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| 444 | ]
|
|---|
| 445 | )}`,
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| 446 | "",
|
|---|
| 447 | `var chunkLoadingGlobal = ${chunkLoadingGlobalExpr} = ${chunkLoadingGlobalExpr} || [];`,
|
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| 448 | "chunkLoadingGlobal.forEach(webpackJsonpCallback.bind(null, 0));",
|
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| 449 | "chunkLoadingGlobal.push = webpackJsonpCallback.bind(null, chunkLoadingGlobal.push.bind(chunkLoadingGlobal));"
|
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| 450 | ])
|
|---|
| 451 | : "// no jsonp function"
|
|---|
| 452 | ]);
|
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| 453 | }
|
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| 454 | }
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| 455 |
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|---|
| 456 | module.exports = JsonpChunkLoadingRuntimeModule;
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