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450 lines
16 KiB
450 lines
16 KiB
/* |
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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 { SyncWaterfallHook } = require("tapable"); |
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const Compilation = require("../Compilation"); |
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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 chunkHasJs = require("../javascript/JavascriptModulesPlugin").chunkHasJs; |
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const { getInitialChunkIds } = require("../javascript/StartupHelpers"); |
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const compileBooleanMatcher = require("../util/compileBooleanMatcher"); |
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/** @typedef {import("../Chunk")} Chunk */ |
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/** |
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* @typedef {Object} JsonpCompilationPluginHooks |
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* @property {SyncWaterfallHook<[string, Chunk]>} linkPreload |
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* @property {SyncWaterfallHook<[string, Chunk]>} linkPrefetch |
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*/ |
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/** @type {WeakMap<Compilation, JsonpCompilationPluginHooks>} */ |
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const compilationHooksMap = new WeakMap(); |
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class JsonpChunkLoadingRuntimeModule extends RuntimeModule { |
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/** |
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* @param {Compilation} compilation the compilation |
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* @returns {JsonpCompilationPluginHooks} hooks |
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*/ |
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static getCompilationHooks(compilation) { |
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if (!(compilation instanceof Compilation)) { |
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throw new TypeError( |
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"The 'compilation' argument must be an instance of Compilation" |
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); |
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} |
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let hooks = compilationHooksMap.get(compilation); |
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if (hooks === undefined) { |
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hooks = { |
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linkPreload: new SyncWaterfallHook(["source", "chunk"]), |
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linkPrefetch: new SyncWaterfallHook(["source", "chunk"]) |
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}; |
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compilationHooksMap.set(compilation, hooks); |
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} |
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return hooks; |
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} |
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constructor(runtimeRequirements) { |
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super("jsonp chunk loading", RuntimeModule.STAGE_ATTACH); |
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this._runtimeRequirements = runtimeRequirements; |
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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} = ${JSON.stringify(options.baseUri)};`; |
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} else { |
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return `${RuntimeGlobals.baseURI} = document.baseURI || self.location.href;`; |
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} |
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} |
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/** |
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* @returns {string} runtime code |
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*/ |
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generate() { |
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const { chunkGraph, compilation, chunk } = this; |
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const { |
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runtimeTemplate, |
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outputOptions: { |
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chunkLoadingGlobal, |
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hotUpdateGlobal, |
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crossOriginLoading, |
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scriptType |
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} |
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} = compilation; |
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const globalObject = runtimeTemplate.globalObject; |
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const { linkPreload, linkPrefetch } = |
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JsonpChunkLoadingRuntimeModule.getCompilationHooks(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 withCallback = this._runtimeRequirements.has( |
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RuntimeGlobals.chunkCallback |
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); |
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const withOnChunkLoad = this._runtimeRequirements.has( |
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RuntimeGlobals.onChunksLoaded |
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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 withPrefetch = this._runtimeRequirements.has( |
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RuntimeGlobals.prefetchChunkHandlers |
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); |
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const withPreload = this._runtimeRequirements.has( |
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RuntimeGlobals.preloadChunkHandlers |
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); |
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const chunkLoadingGlobalExpr = `${globalObject}[${JSON.stringify( |
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chunkLoadingGlobal |
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)}]`; |
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const conditionMap = chunkGraph.getChunkConditionMap(chunk, chunkHasJs); |
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const hasJsMatcher = compileBooleanMatcher(conditionMap); |
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const initialChunkIds = getInitialChunkIds(chunk, chunkGraph, chunkHasJs); |
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const stateExpression = withHmr |
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? `${RuntimeGlobals.hmrRuntimeStatePrefix}_jsonp` |
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: undefined; |
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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 and loading chunks", |
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"// undefined = chunk not loaded, null = chunk preloaded/prefetched", |
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"// [resolve, reject, Promise] = chunk loading, 0 = chunk 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)}: 0`).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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`${fn}.j = ${runtimeTemplate.basicFunction( |
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"chunkId, promises", |
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hasJsMatcher !== false |
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? Template.indent([ |
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"// JSONP chunk loading for javascript", |
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`var installedChunkData = ${RuntimeGlobals.hasOwnProperty}(installedChunks, chunkId) ? installedChunks[chunkId] : undefined;`, |
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'if(installedChunkData !== 0) { // 0 means "already installed".', |
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Template.indent([ |
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"", |
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'// a Promise means "currently loading".', |
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"if(installedChunkData) {", |
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Template.indent([ |
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"promises.push(installedChunkData[2]);" |
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]), |
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"} else {", |
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Template.indent([ |
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hasJsMatcher === true |
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? "if(true) { // all chunks have JS" |
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: `if(${hasJsMatcher("chunkId")}) {`, |
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Template.indent([ |
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"// setup Promise in chunk cache", |
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`var promise = new Promise(${runtimeTemplate.expressionFunction( |
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`installedChunkData = installedChunks[chunkId] = [resolve, reject]`, |
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"resolve, reject" |
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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 url = ${RuntimeGlobals.publicPath} + ${RuntimeGlobals.getChunkScriptFilename}(chunkId);`, |
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"// create error before stack unwound to get useful stacktrace later", |
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"var error = new Error();", |
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`var loadingEnded = ${runtimeTemplate.basicFunction( |
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"event", |
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[ |
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`if(${RuntimeGlobals.hasOwnProperty}(installedChunks, chunkId)) {`, |
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Template.indent([ |
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"installedChunkData = installedChunks[chunkId];", |
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"if(installedChunkData !== 0) installedChunks[chunkId] = undefined;", |
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"if(installedChunkData) {", |
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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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"error.message = 'Loading chunk ' + chunkId + ' failed.\\n(' + errorType + ': ' + realSrc + ')';", |
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"error.name = 'ChunkLoadError';", |
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"error.type = errorType;", |
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"error.request = realSrc;", |
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"installedChunkData[1](error);" |
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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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`${RuntimeGlobals.loadScript}(url, loadingEnded, "chunk-" + chunkId, chunkId);` |
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]), |
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"} else installedChunks[chunkId] = 0;" |
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]), |
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"}" |
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]), |
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"}" |
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]) |
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: Template.indent(["installedChunks[chunkId] = 0;"]) |
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)};` |
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]) |
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: "// no chunk on demand loading", |
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"", |
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withPrefetch && hasJsMatcher !== false |
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? `${ |
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RuntimeGlobals.prefetchChunkHandlers |
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}.j = ${runtimeTemplate.basicFunction("chunkId", [ |
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`if((!${ |
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RuntimeGlobals.hasOwnProperty |
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}(installedChunks, chunkId) || installedChunks[chunkId] === undefined) && ${ |
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hasJsMatcher === true ? "true" : hasJsMatcher("chunkId") |
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}) {`, |
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Template.indent([ |
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"installedChunks[chunkId] = null;", |
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linkPrefetch.call( |
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Template.asString([ |
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"var link = document.createElement('link');", |
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crossOriginLoading |
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? `link.crossOrigin = ${JSON.stringify( |
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crossOriginLoading |
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)};` |
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: "", |
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`if (${RuntimeGlobals.scriptNonce}) {`, |
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Template.indent( |
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`link.setAttribute("nonce", ${RuntimeGlobals.scriptNonce});` |
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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 = ${RuntimeGlobals.publicPath} + ${RuntimeGlobals.getChunkScriptFilename}(chunkId);` |
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]), |
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chunk |
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), |
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"document.head.appendChild(link);" |
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]), |
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"}" |
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])};` |
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: "// no prefetching", |
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"", |
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withPreload && hasJsMatcher !== false |
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? `${ |
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RuntimeGlobals.preloadChunkHandlers |
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}.j = ${runtimeTemplate.basicFunction("chunkId", [ |
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`if((!${ |
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RuntimeGlobals.hasOwnProperty |
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}(installedChunks, chunkId) || installedChunks[chunkId] === undefined) && ${ |
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hasJsMatcher === true ? "true" : hasJsMatcher("chunkId") |
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}) {`, |
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Template.indent([ |
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"installedChunks[chunkId] = null;", |
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linkPreload.call( |
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Template.asString([ |
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"var link = document.createElement('link');", |
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scriptType |
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? `link.type = ${JSON.stringify(scriptType)};` |
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: "", |
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"link.charset = 'utf-8';", |
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`if (${RuntimeGlobals.scriptNonce}) {`, |
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Template.indent( |
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`link.setAttribute("nonce", ${RuntimeGlobals.scriptNonce});` |
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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 = ${RuntimeGlobals.publicPath} + ${RuntimeGlobals.getChunkScriptFilename}(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 = ${JSON.stringify( |
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crossOriginLoading |
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)};` |
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), |
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"}" |
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]) |
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: "" |
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]), |
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chunk |
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), |
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"document.head.appendChild(link);" |
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]), |
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"}" |
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])};` |
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: "// no preloaded", |
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"", |
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withHmr |
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? Template.asString([ |
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"var currentUpdatedModulesList;", |
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"var waitingUpdateResolves = {};", |
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"function loadUpdateChunk(chunkId) {", |
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Template.indent([ |
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`return new Promise(${runtimeTemplate.basicFunction( |
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"resolve, reject", |
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[ |
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"waitingUpdateResolves[chunkId] = resolve;", |
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"// start update chunk loading", |
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`var url = ${RuntimeGlobals.publicPath} + ${RuntimeGlobals.getChunkUpdateScriptFilename}(chunkId);`, |
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"// create error before stack unwound to get useful stacktrace later", |
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"var error = new Error();", |
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`var loadingEnded = ${runtimeTemplate.basicFunction("event", [ |
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"if(waitingUpdateResolves[chunkId]) {", |
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Template.indent([ |
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"waitingUpdateResolves[chunkId] = undefined", |
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"var errorType = event && (event.type === 'load' ? 'missing' : event.type);", |
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"var realSrc = event && event.target && event.target.src;", |
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"error.message = 'Loading hot update chunk ' + chunkId + ' failed.\\n(' + errorType + ': ' + realSrc + ')';", |
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"error.name = 'ChunkLoadError';", |
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"error.type = errorType;", |
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"error.request = realSrc;", |
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"reject(error);" |
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]), |
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"}" |
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])};`, |
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`${RuntimeGlobals.loadScript}(url, loadingEnded);` |
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] |
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)});` |
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]), |
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"}", |
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"", |
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`${globalObject}[${JSON.stringify( |
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hotUpdateGlobal |
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)}] = ${runtimeTemplate.basicFunction( |
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"chunkId, moreModules, runtime", |
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[ |
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"for(var moduleId in moreModules) {", |
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Template.indent([ |
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`if(${RuntimeGlobals.hasOwnProperty}(moreModules, moduleId)) {`, |
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Template.indent([ |
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"currentUpdate[moduleId] = moreModules[moduleId];", |
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"if(currentUpdatedModulesList) currentUpdatedModulesList.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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"if(waitingUpdateResolves[chunkId]) {", |
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Template.indent([ |
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"waitingUpdateResolves[chunkId]();", |
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"waitingUpdateResolves[chunkId] = undefined;" |
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]), |
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"}" |
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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, "jsonp") |
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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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withOnChunkLoad |
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? `${ |
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RuntimeGlobals.onChunksLoaded |
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}.j = ${runtimeTemplate.returningFunction( |
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"installedChunks[chunkId] === 0", |
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"chunkId" |
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)};` |
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: "// no on chunks loaded", |
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"", |
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withCallback || withLoading |
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? Template.asString([ |
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"// install a JSONP callback for chunk loading", |
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`var webpackJsonpCallback = ${runtimeTemplate.basicFunction( |
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"parentChunkLoadingFunction, data", |
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[ |
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runtimeTemplate.destructureArray( |
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["chunkIds", "moreModules", "runtime"], |
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"data" |
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), |
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'// add "moreModules" to the modules object,', |
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'// then flag all "chunkIds" as loaded and fire callback', |
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"var moduleId, chunkId, i = 0;", |
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`if(chunkIds.some(${runtimeTemplate.returningFunction( |
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"installedChunks[id] !== 0", |
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"id" |
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)})) {`, |
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Template.indent([ |
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"for(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) var result = runtime(__webpack_require__);" |
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]), |
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"}", |
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"if(parentChunkLoadingFunction) parentChunkLoadingFunction(data);", |
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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(${RuntimeGlobals.hasOwnProperty}(installedChunks, chunkId) && installedChunks[chunkId]) {`, |
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Template.indent("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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withOnChunkLoad |
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? `return ${RuntimeGlobals.onChunksLoaded}(result);` |
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: "" |
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] |
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)}`, |
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"", |
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`var chunkLoadingGlobal = ${chunkLoadingGlobalExpr} = ${chunkLoadingGlobalExpr} || [];`, |
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"chunkLoadingGlobal.forEach(webpackJsonpCallback.bind(null, 0));", |
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"chunkLoadingGlobal.push = webpackJsonpCallback.bind(null, chunkLoadingGlobal.push.bind(chunkLoadingGlobal));" |
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]) |
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: "// no jsonp function" |
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]); |
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} |
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} |
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module.exports = JsonpChunkLoadingRuntimeModule;
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