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593 lines
20 KiB
593 lines
20 KiB
4 weeks ago
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/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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"use strict";
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const { SyncWaterfallHook } = require("tapable");
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const 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 compileBooleanMatcher = require("../util/compileBooleanMatcher");
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const { chunkHasCss } = require("./CssModulesPlugin");
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/** @typedef {import("../Chunk")} Chunk */
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/** @typedef {import("../ChunkGraph")} ChunkGraph */
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/** @typedef {import("../Compilation").RuntimeRequirementsContext} RuntimeRequirementsContext */
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/** @typedef {import("../Module").ReadOnlyRuntimeRequirements} ReadOnlyRuntimeRequirements */
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/**
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* @typedef {object} CssLoadingRuntimeModulePluginHooks
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* @property {SyncWaterfallHook<[string, Chunk]>} createStylesheet
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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, CssLoadingRuntimeModulePluginHooks>} */
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const compilationHooksMap = new WeakMap();
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class CssLoadingRuntimeModule extends RuntimeModule {
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/**
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* @param {Compilation} compilation the compilation
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* @returns {CssLoadingRuntimeModulePluginHooks} 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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createStylesheet: new SyncWaterfallHook(["source", "chunk"]),
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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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/**
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* @param {ReadOnlyRuntimeRequirements} runtimeRequirements runtime requirements
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*/
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constructor(runtimeRequirements) {
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super("css loading", 10);
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this._runtimeRequirements = runtimeRequirements;
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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 { _runtimeRequirements } = this;
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const compilation = /** @type {Compilation} */ (this.compilation);
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const chunk = /** @type {Chunk} */ (this.chunk);
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const {
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chunkGraph,
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runtimeTemplate,
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outputOptions: {
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crossOriginLoading,
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uniqueName,
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chunkLoadTimeout: loadTimeout,
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cssHeadDataCompression: withCompression
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}
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} = compilation;
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const fn = RuntimeGlobals.ensureChunkHandlers;
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const conditionMap = chunkGraph.getChunkConditionMap(
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/** @type {Chunk} */ (chunk),
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/**
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* @param {Chunk} chunk the chunk
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* @param {ChunkGraph} chunkGraph the chunk graph
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* @returns {boolean} true, if the chunk has css
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*/
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(chunk, chunkGraph) =>
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Boolean(chunkGraph.getChunkModulesIterableBySourceType(chunk, "css"))
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);
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const hasCssMatcher = compileBooleanMatcher(conditionMap);
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const withLoading =
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_runtimeRequirements.has(RuntimeGlobals.ensureChunkHandlers) &&
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hasCssMatcher !== false;
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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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/** @type {boolean} */
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const withHmr = _runtimeRequirements.has(
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RuntimeGlobals.hmrDownloadUpdateHandlers
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);
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/** @type {Set<number | string | null>} */
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const initialChunkIdsWithCss = new Set();
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/** @type {Set<number | string | null>} */
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const initialChunkIdsWithoutCss = new Set();
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for (const c of /** @type {Chunk} */ (chunk).getAllInitialChunks()) {
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(chunkHasCss(c, chunkGraph)
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? initialChunkIdsWithCss
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: initialChunkIdsWithoutCss
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).add(c.id);
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}
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if (!withLoading && !withHmr && initialChunkIdsWithCss.size === 0) {
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return null;
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}
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const { linkPreload, linkPrefetch } =
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CssLoadingRuntimeModule.getCompilationHooks(compilation);
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const withFetchPriority = _runtimeRequirements.has(
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RuntimeGlobals.hasFetchPriority
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);
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const { createStylesheet } =
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CssLoadingRuntimeModule.getCompilationHooks(compilation);
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const stateExpression = withHmr
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? `${RuntimeGlobals.hmrRuntimeStatePrefix}_css`
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: undefined;
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const code = Template.asString([
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"link = document.createElement('link');",
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`if (${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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uniqueName
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? 'link.setAttribute("data-webpack", uniqueName + ":" + key);'
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: "",
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withFetchPriority
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? Template.asString([
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"if(fetchPriority) {",
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Template.indent(
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'link.setAttribute("fetchpriority", fetchPriority);'
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),
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"}"
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])
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: "",
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"link.setAttribute(loadingAttribute, 1);",
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'link.rel = "stylesheet";',
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"link.href = url;",
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crossOriginLoading
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? crossOriginLoading === "use-credentials"
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? 'link.crossOrigin = "use-credentials";'
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: Template.asString([
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"if (link.href.indexOf(window.location.origin + '/') !== 0) {",
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Template.indent(
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`link.crossOrigin = ${JSON.stringify(crossOriginLoading)};`
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),
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"}"
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])
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: ""
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]);
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/** @type {(str: string) => number} */
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const cc = str => str.charCodeAt(0);
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const name = uniqueName
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? runtimeTemplate.concatenation(
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"--webpack-",
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{ expr: "uniqueName" },
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"-",
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{ expr: "chunkId" }
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)
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: runtimeTemplate.concatenation("--webpack-", { expr: "chunkId" });
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return Template.asString([
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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} = ${stateExpression} || ` : ""
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}{${Array.from(
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initialChunkIdsWithoutCss,
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id => `${JSON.stringify(id)}:0`
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).join(",")}};`,
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"",
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uniqueName
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? `var uniqueName = ${JSON.stringify(
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runtimeTemplate.outputOptions.uniqueName
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)};`
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: "// data-webpack is not used as build has no uniqueName",
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`var loadCssChunkData = ${runtimeTemplate.basicFunction(
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"target, link, chunkId",
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[
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`var data, token = "", token2 = "", exports = {}, ${
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withHmr ? "moduleIds = [], " : ""
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}name = ${name}, i, cc = 1;`,
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"try {",
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Template.indent([
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"if(!link) link = loadStylesheet(chunkId);",
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// `link.sheet.rules` for legacy browsers
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"var cssRules = link.sheet.cssRules || link.sheet.rules;",
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"var j = cssRules.length - 1;",
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"while(j > -1 && !data) {",
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Template.indent([
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"var style = cssRules[j--].style;",
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"if(!style) continue;",
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"data = style.getPropertyValue(name);"
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]),
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"}"
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]),
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"}catch(e){}",
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"if(!data) {",
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Template.indent([
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"data = getComputedStyle(document.head).getPropertyValue(name);"
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]),
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"}",
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"if(!data) return [];",
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withCompression
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? Template.asString([
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// LZW decode
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`var map = {}, char = data[0], oldPhrase = char, decoded = char, code = 256, maxCode = ${"\uFFFF".charCodeAt(
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0
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)}, phrase;`,
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"for (i = 1; i < data.length; i++) {",
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Template.indent([
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"cc = data[i].charCodeAt(0);",
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"if (cc < 256) phrase = data[i]; else phrase = map[cc] ? map[cc] : (oldPhrase + char);",
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"decoded += phrase;",
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"char = phrase.charAt(0);",
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"map[code] = oldPhrase + char;",
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"if (++code > maxCode) { code = 256; map = {}; }",
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"oldPhrase = phrase;"
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]),
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"}",
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"data = decoded;"
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])
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: "// css head data compression is disabled",
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"for(i = 0; cc; i++) {",
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Template.indent([
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"cc = data.charCodeAt(i);",
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`if(cc == ${cc(":")}) { token2 = token; token = ""; }`,
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`else if(cc == ${cc(
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"/"
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)}) { token = token.replace(/^_/, ""); token2 = token2.replace(/^_/, ""); exports[token2] = token; token = ""; token2 = ""; }`,
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`else if(cc == ${cc("&")}) { ${
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RuntimeGlobals.makeNamespaceObject
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}(exports); }`,
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`else if(!cc || cc == ${cc(
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","
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)}) { token = token.replace(/^_/, ""); target[token] = (${runtimeTemplate.basicFunction(
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"exports, module",
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"module.exports = exports;"
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)}).bind(null, exports); ${
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withHmr ? "moduleIds.push(token); " : ""
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}token = ""; token2 = ""; exports = {}; }`,
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`else if(cc == ${cc("\\")}) { token += data[++i] }`,
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"else { token += data[i]; }"
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]),
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"}",
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`${
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withHmr ? `if(target == ${RuntimeGlobals.moduleFactories}) ` : ""
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}installedChunks[chunkId] = 0;`,
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withHmr ? "return moduleIds;" : ""
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]
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)}`,
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'var loadingAttribute = "data-webpack-loading";',
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`var loadStylesheet = ${runtimeTemplate.basicFunction(
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`chunkId, url, done${withHmr ? ", hmr" : ""}${
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withFetchPriority ? ", fetchPriority" : ""
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}`,
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[
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'var link, needAttach, key = "chunk-" + chunkId;',
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withHmr ? "if(!hmr) {" : "",
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'var links = document.getElementsByTagName("link");',
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"for(var i = 0; i < links.length; i++) {",
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Template.indent([
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"var l = links[i];",
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`if(l.rel == "stylesheet" && (${
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withHmr
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? 'l.href.startsWith(url) || l.getAttribute("href").startsWith(url)'
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: 'l.href == url || l.getAttribute("href") == url'
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}${
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uniqueName
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? ' || l.getAttribute("data-webpack") == uniqueName + ":" + key'
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: ""
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})) { link = l; break; }`
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]),
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"}",
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"if(!done) return link;",
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withHmr ? "}" : "",
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"if(!link) {",
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Template.indent([
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"needAttach = true;",
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createStylesheet.call(code, /** @type {Chunk} */ (this.chunk))
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]),
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"}",
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`var onLinkComplete = ${runtimeTemplate.basicFunction(
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"prev, event",
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Template.asString([
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"link.onerror = link.onload = null;",
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"link.removeAttribute(loadingAttribute);",
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"clearTimeout(timeout);",
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'if(event && event.type != "load") link.parentNode.removeChild(link)',
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"done(event);",
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"if(prev) return prev(event);"
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])
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)};`,
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"if(link.getAttribute(loadingAttribute)) {",
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Template.indent([
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`var timeout = setTimeout(onLinkComplete.bind(null, undefined, { type: 'timeout', target: link }), ${loadTimeout});`,
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"link.onerror = onLinkComplete.bind(null, link.onerror);",
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"link.onload = onLinkComplete.bind(null, link.onload);"
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]),
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"} else onLinkComplete(undefined, { type: 'load', target: link });", // We assume any existing stylesheet is render blocking
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withHmr ? "hmr ? document.head.insertBefore(link, hmr) :" : "",
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|
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"needAttach && document.head.appendChild(link);",
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|
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"return link;"
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]
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)};`,
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initialChunkIdsWithCss.size > 2
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? `${JSON.stringify(
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Array.from(initialChunkIdsWithCss)
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)}.forEach(loadCssChunkData.bind(null, ${
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RuntimeGlobals.moduleFactories
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}, 0));`
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: initialChunkIdsWithCss.size > 0
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? `${Array.from(
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initialChunkIdsWithCss,
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id =>
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`loadCssChunkData(${
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RuntimeGlobals.moduleFactories
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}, 0, ${JSON.stringify(id)});`
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).join("")}`
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: "// no initial css",
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"",
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withLoading
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? Template.asString([
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`${fn}.css = ${runtimeTemplate.basicFunction(
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`chunkId, promises${withFetchPriority ? " , fetchPriority" : ""}`,
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[
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|
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"// css chunk loading",
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`var installedChunkData = ${RuntimeGlobals.hasOwnProperty}(installedChunks, chunkId) ? installedChunks[chunkId] : undefined;`,
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|
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'if(installedChunkData !== 0) { // 0 means "already installed".',
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Template.indent([
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"",
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'// a Promise means "currently loading".',
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|
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"if(installedChunkData) {",
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Template.indent(["promises.push(installedChunkData[2]);"]),
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"} else {",
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Template.indent([
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hasCssMatcher === true
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? "if(true) { // all chunks have CSS"
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|
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: `if(${hasCssMatcher("chunkId")}) {`,
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|
|
Template.indent([
|
||
|
|
"// setup Promise in chunk cache",
|
||
|
|
`var promise = new Promise(${runtimeTemplate.expressionFunction(
|
||
|
|
"installedChunkData = installedChunks[chunkId] = [resolve, reject]",
|
||
|
|
"resolve, reject"
|
||
|
|
)});`,
|
||
|
|
"promises.push(installedChunkData[2] = promise);",
|
||
|
|
"",
|
||
|
|
"// start chunk loading",
|
||
|
|
`var url = ${RuntimeGlobals.publicPath} + ${RuntimeGlobals.getChunkCssFilename}(chunkId);`,
|
||
|
|
"// create error before stack unwound to get useful stacktrace later",
|
||
|
|
"var error = new Error();",
|
||
|
|
`var loadingEnded = ${runtimeTemplate.basicFunction(
|
||
|
|
"event",
|
||
|
|
[
|
||
|
|
`if(${RuntimeGlobals.hasOwnProperty}(installedChunks, chunkId)) {`,
|
||
|
|
Template.indent([
|
||
|
|
"installedChunkData = installedChunks[chunkId];",
|
||
|
|
"if(installedChunkData !== 0) installedChunks[chunkId] = undefined;",
|
||
|
|
"if(installedChunkData) {",
|
||
|
|
Template.indent([
|
||
|
|
'if(event.type !== "load") {',
|
||
|
|
Template.indent([
|
||
|
|
"var errorType = event && event.type;",
|
||
|
|
"var realHref = event && event.target && event.target.href;",
|
||
|
|
"error.message = 'Loading css chunk ' + chunkId + ' failed.\\n(' + errorType + ': ' + realHref + ')';",
|
||
|
|
"error.name = 'ChunkLoadError';",
|
||
|
|
"error.type = errorType;",
|
||
|
|
"error.request = realHref;",
|
||
|
|
"installedChunkData[1](error);"
|
||
|
|
]),
|
||
|
|
"} else {",
|
||
|
|
Template.indent([
|
||
|
|
`loadCssChunkData(${RuntimeGlobals.moduleFactories}, link, chunkId);`,
|
||
|
|
"installedChunkData[0]();"
|
||
|
|
]),
|
||
|
|
"}"
|
||
|
|
]),
|
||
|
|
"}"
|
||
|
|
]),
|
||
|
|
"}"
|
||
|
|
]
|
||
|
|
)};`,
|
||
|
|
`var link = loadStylesheet(chunkId, url, loadingEnded${
|
||
|
|
withFetchPriority ? ", fetchPriority" : ""
|
||
|
|
});`
|
||
|
|
]),
|
||
|
|
"} else installedChunks[chunkId] = 0;"
|
||
|
|
]),
|
||
|
|
"}"
|
||
|
|
]),
|
||
|
|
"}"
|
||
|
|
]
|
||
|
|
)};`
|
||
|
|
])
|
||
|
|
: "// no chunk loading",
|
||
|
|
"",
|
||
|
|
withPrefetch && hasCssMatcher !== false
|
||
|
|
? `${
|
||
|
|
RuntimeGlobals.prefetchChunkHandlers
|
||
|
|
}.s = ${runtimeTemplate.basicFunction("chunkId", [
|
||
|
|
`if((!${
|
||
|
|
RuntimeGlobals.hasOwnProperty
|
||
|
|
}(installedChunks, chunkId) || installedChunks[chunkId] === undefined) && ${
|
||
|
|
hasCssMatcher === true ? "true" : hasCssMatcher("chunkId")
|
||
|
|
}) {`,
|
||
|
|
Template.indent([
|
||
|
|
"installedChunks[chunkId] = null;",
|
||
|
|
linkPrefetch.call(
|
||
|
|
Template.asString([
|
||
|
|
"var link = document.createElement('link');",
|
||
|
|
crossOriginLoading
|
||
|
|
? `link.crossOrigin = ${JSON.stringify(
|
||
|
|
crossOriginLoading
|
||
|
|
)};`
|
||
|
|
: "",
|
||
|
|
`if (${RuntimeGlobals.scriptNonce}) {`,
|
||
|
|
Template.indent(
|
||
|
|
`link.setAttribute("nonce", ${RuntimeGlobals.scriptNonce});`
|
||
|
|
),
|
||
|
|
"}",
|
||
|
|
'link.rel = "prefetch";',
|
||
|
|
'link.as = "style";',
|
||
|
|
`link.href = ${RuntimeGlobals.publicPath} + ${RuntimeGlobals.getChunkCssFilename}(chunkId);`
|
||
|
|
]),
|
||
|
|
chunk
|
||
|
|
),
|
||
|
|
"document.head.appendChild(link);"
|
||
|
|
]),
|
||
|
|
"}"
|
||
|
|
])};`
|
||
|
|
: "// no prefetching",
|
||
|
|
"",
|
||
|
|
withPreload && hasCssMatcher !== false
|
||
|
|
? `${
|
||
|
|
RuntimeGlobals.preloadChunkHandlers
|
||
|
|
}.s = ${runtimeTemplate.basicFunction("chunkId", [
|
||
|
|
`if((!${
|
||
|
|
RuntimeGlobals.hasOwnProperty
|
||
|
|
}(installedChunks, chunkId) || installedChunks[chunkId] === undefined) && ${
|
||
|
|
hasCssMatcher === true ? "true" : hasCssMatcher("chunkId")
|
||
|
|
}) {`,
|
||
|
|
Template.indent([
|
||
|
|
"installedChunks[chunkId] = null;",
|
||
|
|
linkPreload.call(
|
||
|
|
Template.asString([
|
||
|
|
"var link = document.createElement('link');",
|
||
|
|
"link.charset = 'utf-8';",
|
||
|
|
`if (${RuntimeGlobals.scriptNonce}) {`,
|
||
|
|
Template.indent(
|
||
|
|
`link.setAttribute("nonce", ${RuntimeGlobals.scriptNonce});`
|
||
|
|
),
|
||
|
|
"}",
|
||
|
|
'link.rel = "preload";',
|
||
|
|
'link.as = "style";',
|
||
|
|
`link.href = ${RuntimeGlobals.publicPath} + ${RuntimeGlobals.getChunkCssFilename}(chunkId);`,
|
||
|
|
crossOriginLoading
|
||
|
|
? crossOriginLoading === "use-credentials"
|
||
|
|
? 'link.crossOrigin = "use-credentials";'
|
||
|
|
: Template.asString([
|
||
|
|
"if (link.href.indexOf(window.location.origin + '/') !== 0) {",
|
||
|
|
Template.indent(
|
||
|
|
`link.crossOrigin = ${JSON.stringify(
|
||
|
|
crossOriginLoading
|
||
|
|
)};`
|
||
|
|
),
|
||
|
|
"}"
|
||
|
|
])
|
||
|
|
: ""
|
||
|
|
]),
|
||
|
|
chunk
|
||
|
|
),
|
||
|
|
"document.head.appendChild(link);"
|
||
|
|
]),
|
||
|
|
"}"
|
||
|
|
])};`
|
||
|
|
: "// no preloaded",
|
||
|
|
withHmr
|
||
|
|
? Template.asString([
|
||
|
|
"var oldTags = [];",
|
||
|
|
"var newTags = [];",
|
||
|
|
`var applyHandler = ${runtimeTemplate.basicFunction("options", [
|
||
|
|
`return { dispose: ${runtimeTemplate.basicFunction(
|
||
|
|
"",
|
||
|
|
[]
|
||
|
|
)}, apply: ${runtimeTemplate.basicFunction("", [
|
||
|
|
"var moduleIds = [];",
|
||
|
|
`newTags.forEach(${runtimeTemplate.expressionFunction(
|
||
|
|
"info[1].sheet.disabled = false",
|
||
|
|
"info"
|
||
|
|
)});`,
|
||
|
|
"while(oldTags.length) {",
|
||
|
|
Template.indent([
|
||
|
|
"var oldTag = oldTags.pop();",
|
||
|
|
"if(oldTag.parentNode) oldTag.parentNode.removeChild(oldTag);"
|
||
|
|
]),
|
||
|
|
"}",
|
||
|
|
"while(newTags.length) {",
|
||
|
|
Template.indent([
|
||
|
|
"var info = newTags.pop();",
|
||
|
|
`var chunkModuleIds = loadCssChunkData(${RuntimeGlobals.moduleFactories}, info[1], info[0]);`,
|
||
|
|
`chunkModuleIds.forEach(${runtimeTemplate.expressionFunction(
|
||
|
|
"moduleIds.push(id)",
|
||
|
|
"id"
|
||
|
|
)});`
|
||
|
|
]),
|
||
|
|
"}",
|
||
|
|
"return moduleIds;"
|
||
|
|
])} };`
|
||
|
|
])}`,
|
||
|
|
`var cssTextKey = ${runtimeTemplate.returningFunction(
|
||
|
|
`Array.from(link.sheet.cssRules, ${runtimeTemplate.returningFunction(
|
||
|
|
"r.cssText",
|
||
|
|
"r"
|
||
|
|
)}).join()`,
|
||
|
|
"link"
|
||
|
|
)}`,
|
||
|
|
`${
|
||
|
|
RuntimeGlobals.hmrDownloadUpdateHandlers
|
||
|
|
}.css = ${runtimeTemplate.basicFunction(
|
||
|
|
"chunkIds, removedChunks, removedModules, promises, applyHandlers, updatedModulesList",
|
||
|
|
[
|
||
|
|
"applyHandlers.push(applyHandler);",
|
||
|
|
`chunkIds.forEach(${runtimeTemplate.basicFunction("chunkId", [
|
||
|
|
`var filename = ${RuntimeGlobals.getChunkCssFilename}(chunkId);`,
|
||
|
|
`var url = ${RuntimeGlobals.publicPath} + filename;`,
|
||
|
|
"var oldTag = loadStylesheet(chunkId, url);",
|
||
|
|
"if(!oldTag) return;",
|
||
|
|
`promises.push(new Promise(${runtimeTemplate.basicFunction(
|
||
|
|
"resolve, reject",
|
||
|
|
[
|
||
|
|
`var link = loadStylesheet(chunkId, url + (url.indexOf("?") < 0 ? "?" : "&") + "hmr=" + Date.now(), ${runtimeTemplate.basicFunction(
|
||
|
|
"event",
|
||
|
|
[
|
||
|
|
'if(event.type !== "load") {',
|
||
|
|
Template.indent([
|
||
|
|
"var errorType = event && event.type;",
|
||
|
|
"var realHref = event && event.target && event.target.href;",
|
||
|
|
"error.message = 'Loading css hot update chunk ' + chunkId + ' failed.\\n(' + errorType + ': ' + realHref + ')';",
|
||
|
|
"error.name = 'ChunkLoadError';",
|
||
|
|
"error.type = errorType;",
|
||
|
|
"error.request = realHref;",
|
||
|
|
"reject(error);"
|
||
|
|
]),
|
||
|
|
"} else {",
|
||
|
|
Template.indent([
|
||
|
|
"try { if(cssTextKey(oldTag) == cssTextKey(link)) { if(link.parentNode) link.parentNode.removeChild(link); return resolve(); } } catch(e) {}",
|
||
|
|
"var factories = {};",
|
||
|
|
"loadCssChunkData(factories, link, chunkId);",
|
||
|
|
`Object.keys(factories).forEach(${runtimeTemplate.expressionFunction(
|
||
|
|
"updatedModulesList.push(id)",
|
||
|
|
"id"
|
||
|
|
)})`,
|
||
|
|
"link.sheet.disabled = true;",
|
||
|
|
"oldTags.push(oldTag);",
|
||
|
|
"newTags.push([chunkId, link]);",
|
||
|
|
"resolve();"
|
||
|
|
]),
|
||
|
|
"}"
|
||
|
|
]
|
||
|
|
)}, oldTag);`
|
||
|
|
]
|
||
|
|
)}));`
|
||
|
|
])});`
|
||
|
|
]
|
||
|
|
)}`
|
||
|
|
])
|
||
|
|
: "// no hmr"
|
||
|
|
]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
module.exports = CssLoadingRuntimeModule;
|