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my-app/node_modules/webpack/lib/webworker/ImportScriptsChunkLoadingRuntimeModule.js
generated
vendored
Executable file
241
my-app/node_modules/webpack/lib/webworker/ImportScriptsChunkLoadingRuntimeModule.js
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/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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*/
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"use strict";
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const RuntimeGlobals = require("../RuntimeGlobals");
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const RuntimeModule = require("../RuntimeModule");
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const Template = require("../Template");
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const {
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getChunkFilenameTemplate,
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chunkHasJs
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} = require("../javascript/JavascriptModulesPlugin");
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const { getInitialChunkIds } = require("../javascript/StartupHelpers");
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const compileBooleanMatcher = require("../util/compileBooleanMatcher");
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const { getUndoPath } = require("../util/identifier");
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/** @typedef {import("../Chunk")} Chunk */
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/** @typedef {import("../ChunkGraph")} ChunkGraph */
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/** @typedef {import("../Compilation")} Compilation */
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class ImportScriptsChunkLoadingRuntimeModule extends RuntimeModule {
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/**
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* @param {Set<string>} runtimeRequirements runtime requirements
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* @param {boolean} withCreateScriptUrl with createScriptUrl support
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*/
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constructor(runtimeRequirements, withCreateScriptUrl) {
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super("importScripts chunk loading", RuntimeModule.STAGE_ATTACH);
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this.runtimeRequirements = runtimeRequirements;
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this._withCreateScriptUrl = withCreateScriptUrl;
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}
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/**
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* @private
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* @param {Chunk} chunk chunk
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* @returns {string} generated code
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*/
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_generateBaseUri(chunk) {
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const options = chunk.getEntryOptions();
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if (options && options.baseUri) {
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return `${RuntimeGlobals.baseURI} = ${JSON.stringify(options.baseUri)};`;
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}
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const compilation = /** @type {Compilation} */ (this.compilation);
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const outputName = compilation.getPath(
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getChunkFilenameTemplate(chunk, compilation.outputOptions),
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{
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chunk,
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contentHashType: "javascript"
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}
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);
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const rootOutputDir = getUndoPath(
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outputName,
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/** @type {string} */ (compilation.outputOptions.path),
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false
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);
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return `${RuntimeGlobals.baseURI} = self.location + ${JSON.stringify(
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rootOutputDir ? "/../" + rootOutputDir : ""
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)};`;
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}
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/**
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* @returns {string | null} runtime code
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*/
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generate() {
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const compilation = /** @type {Compilation} */ (this.compilation);
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const fn = RuntimeGlobals.ensureChunkHandlers;
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const withBaseURI = this.runtimeRequirements.has(RuntimeGlobals.baseURI);
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const withLoading = this.runtimeRequirements.has(
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RuntimeGlobals.ensureChunkHandlers
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);
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const withHmr = this.runtimeRequirements.has(
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RuntimeGlobals.hmrDownloadUpdateHandlers
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);
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const withHmrManifest = this.runtimeRequirements.has(
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RuntimeGlobals.hmrDownloadManifest
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);
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const globalObject = compilation.runtimeTemplate.globalObject;
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const chunkLoadingGlobalExpr = `${globalObject}[${JSON.stringify(
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compilation.outputOptions.chunkLoadingGlobal
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)}]`;
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const chunkGraph = /** @type {ChunkGraph} */ (this.chunkGraph);
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const chunk = /** @type {Chunk} */ (this.chunk);
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const hasJsMatcher = compileBooleanMatcher(
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chunkGraph.getChunkConditionMap(chunk, chunkHasJs)
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);
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const initialChunkIds = getInitialChunkIds(chunk, chunkGraph, chunkHasJs);
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const stateExpression = withHmr
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? `${RuntimeGlobals.hmrRuntimeStatePrefix}_importScripts`
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: undefined;
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const runtimeTemplate = compilation.runtimeTemplate;
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const { _withCreateScriptUrl: withCreateScriptUrl } = this;
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return Template.asString([
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withBaseURI ? this._generateBaseUri(chunk) : "// no baseURI",
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"",
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"// object to store loaded chunks",
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'// "1" means "already loaded"',
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`var installedChunks = ${
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stateExpression ? `${stateExpression} = ${stateExpression} || ` : ""
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}{`,
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Template.indent(
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Array.from(initialChunkIds, id => `${JSON.stringify(id)}: 1`).join(
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",\n"
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)
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),
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"};",
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"",
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withLoading
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? Template.asString([
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"// importScripts chunk loading",
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`var installChunk = ${runtimeTemplate.basicFunction("data", [
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runtimeTemplate.destructureArray(
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["chunkIds", "moreModules", "runtime"],
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"data"
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),
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"for(var moduleId in moreModules) {",
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Template.indent([
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`if(${RuntimeGlobals.hasOwnProperty}(moreModules, moduleId)) {`,
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Template.indent(
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`${RuntimeGlobals.moduleFactories}[moduleId] = moreModules[moduleId];`
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),
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"}"
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]),
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"}",
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`if(runtime) runtime(${RuntimeGlobals.require});`,
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"while(chunkIds.length)",
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Template.indent("installedChunks[chunkIds.pop()] = 1;"),
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"parentChunkLoadingFunction(data);"
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])};`
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])
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: "// no chunk install function needed",
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withLoading
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? Template.asString([
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`${fn}.i = ${runtimeTemplate.basicFunction(
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"chunkId, promises",
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hasJsMatcher !== false
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? [
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'// "1" is the signal for "already loaded"',
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"if(!installedChunks[chunkId]) {",
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Template.indent([
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hasJsMatcher === true
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? "if(true) { // all chunks have JS"
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: `if(${hasJsMatcher("chunkId")}) {`,
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Template.indent(
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`importScripts(${
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withCreateScriptUrl
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? `${RuntimeGlobals.createScriptUrl}(${RuntimeGlobals.publicPath} + ${RuntimeGlobals.getChunkScriptFilename}(chunkId))`
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: `${RuntimeGlobals.publicPath} + ${RuntimeGlobals.getChunkScriptFilename}(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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]
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: "installedChunks[chunkId] = 1;"
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)};`,
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"",
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`var chunkLoadingGlobal = ${chunkLoadingGlobalExpr} = ${chunkLoadingGlobalExpr} || [];`,
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"var parentChunkLoadingFunction = chunkLoadingGlobal.push.bind(chunkLoadingGlobal);",
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"chunkLoadingGlobal.push = installChunk;"
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])
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: "// no chunk loading",
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"",
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withHmr
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? Template.asString([
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"function loadUpdateChunk(chunkId, updatedModulesList) {",
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Template.indent([
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"var success = false;",
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`${globalObject}[${JSON.stringify(
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compilation.outputOptions.hotUpdateGlobal
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)}] = ${runtimeTemplate.basicFunction("_, moreModules, runtime", [
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"for(var moduleId in moreModules) {",
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Template.indent([
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`if(${RuntimeGlobals.hasOwnProperty}(moreModules, moduleId)) {`,
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Template.indent([
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"currentUpdate[moduleId] = moreModules[moduleId];",
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"if(updatedModulesList) updatedModulesList.push(moduleId);"
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]),
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"}"
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]),
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"}",
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"if(runtime) currentUpdateRuntime.push(runtime);",
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"success = true;"
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])};`,
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"// start update chunk loading",
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`importScripts(${
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withCreateScriptUrl
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? `${RuntimeGlobals.createScriptUrl}(${RuntimeGlobals.publicPath} + ${RuntimeGlobals.getChunkUpdateScriptFilename}(chunkId))`
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: `${RuntimeGlobals.publicPath} + ${RuntimeGlobals.getChunkUpdateScriptFilename}(chunkId)`
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});`,
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'if(!success) throw new Error("Loading update chunk failed for unknown reason");'
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]),
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"}",
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"",
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Template.getFunctionContent(
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require("../hmr/JavascriptHotModuleReplacement.runtime.js")
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)
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.replace(/\$key\$/g, "importScrips")
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.replace(/\$installedChunks\$/g, "installedChunks")
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.replace(/\$loadUpdateChunk\$/g, "loadUpdateChunk")
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.replace(/\$moduleCache\$/g, RuntimeGlobals.moduleCache)
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.replace(/\$moduleFactories\$/g, RuntimeGlobals.moduleFactories)
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.replace(
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/\$ensureChunkHandlers\$/g,
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RuntimeGlobals.ensureChunkHandlers
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)
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.replace(/\$hasOwnProperty\$/g, RuntimeGlobals.hasOwnProperty)
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.replace(/\$hmrModuleData\$/g, RuntimeGlobals.hmrModuleData)
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.replace(
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/\$hmrDownloadUpdateHandlers\$/g,
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RuntimeGlobals.hmrDownloadUpdateHandlers
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)
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.replace(
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/\$hmrInvalidateModuleHandlers\$/g,
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RuntimeGlobals.hmrInvalidateModuleHandlers
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)
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])
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: "// no HMR",
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"",
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withHmrManifest
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? Template.asString([
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`${
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RuntimeGlobals.hmrDownloadManifest
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} = ${runtimeTemplate.basicFunction("", [
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'if (typeof fetch === "undefined") throw new Error("No browser support: need fetch API");',
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`return fetch(${RuntimeGlobals.publicPath} + ${
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RuntimeGlobals.getUpdateManifestFilename
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}()).then(${runtimeTemplate.basicFunction("response", [
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"if(response.status === 404) return; // no update available",
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'if(!response.ok) throw new Error("Failed to fetch update manifest " + response.statusText);',
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"return response.json();"
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])});`
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])};`
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])
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: "// no HMR manifest"
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]);
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}
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}
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module.exports = ImportScriptsChunkLoadingRuntimeModule;
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