| 1 | /*
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| 2 | MIT License http://www.opensource.org/licenses/mit-license.php
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| 3 | Author Tobias Koppers @sokra
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| 4 | */
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| 5 |
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| 6 | "use strict";
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| 7 |
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| 8 | const { SyncWaterfallHook } = require("tapable");
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| 9 | const Compilation = require("../Compilation");
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| 10 | const RuntimeGlobals = require("../RuntimeGlobals");
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| 11 | const RuntimeModule = require("../RuntimeModule");
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| 12 | const Template = require("../Template");
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| 13 | const compileBooleanMatcher = require("../util/compileBooleanMatcher");
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| 14 | const { chunkHasCss } = require("./CssModulesPlugin");
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| 15 |
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| 16 | /** @typedef {import("../../declarations/WebpackOptions").Environment} Environment */
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| 17 | /** @typedef {import("../Chunk")} Chunk */
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| 18 | /** @typedef {import("../ChunkGraph")} ChunkGraph */
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| 19 | /** @typedef {import("../Compilation").RuntimeRequirementsContext} RuntimeRequirementsContext */
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| 20 | /** @typedef {import("../Module").ReadOnlyRuntimeRequirements} ReadOnlyRuntimeRequirements */
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| 21 |
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| 22 | /**
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| 23 | * @typedef {object} CssLoadingRuntimeModulePluginHooks
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| 24 | * @property {SyncWaterfallHook<[string, Chunk]>} createStylesheet
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| 25 | * @property {SyncWaterfallHook<[string, Chunk]>} linkPreload
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| 26 | * @property {SyncWaterfallHook<[string, Chunk]>} linkPrefetch
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| 27 | */
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| 28 |
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| 29 | /** @type {WeakMap<Compilation, CssLoadingRuntimeModulePluginHooks>} */
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| 30 | const compilationHooksMap = new WeakMap();
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| 31 |
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| 32 | class CssLoadingRuntimeModule extends RuntimeModule {
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| 33 | /**
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| 34 | * @param {Compilation} compilation the compilation
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| 35 | * @returns {CssLoadingRuntimeModulePluginHooks} hooks
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| 36 | */
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| 37 | static getCompilationHooks(compilation) {
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| 38 | if (!(compilation instanceof Compilation)) {
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| 39 | throw new TypeError(
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| 40 | "The 'compilation' argument must be an instance of Compilation"
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| 41 | );
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| 42 | }
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| 43 | let hooks = compilationHooksMap.get(compilation);
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| 44 | if (hooks === undefined) {
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| 45 | hooks = {
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| 46 | createStylesheet: new SyncWaterfallHook(["source", "chunk"]),
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| 47 | linkPreload: new SyncWaterfallHook(["source", "chunk"]),
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| 48 | linkPrefetch: new SyncWaterfallHook(["source", "chunk"])
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| 49 | };
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| 50 | compilationHooksMap.set(compilation, hooks);
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| 51 | }
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| 52 | return hooks;
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| 53 | }
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| 54 |
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| 55 | /**
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| 56 | * @param {ReadOnlyRuntimeRequirements} runtimeRequirements runtime requirements
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| 57 | */
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| 58 | constructor(runtimeRequirements) {
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| 59 | super("css loading", 10);
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| 60 |
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| 61 | this._runtimeRequirements = runtimeRequirements;
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| 62 | }
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| 63 |
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| 64 | /**
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| 65 | * @returns {string | null} runtime code
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| 66 | */
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| 67 | generate() {
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| 68 | const { _runtimeRequirements } = this;
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| 69 | const compilation = /** @type {Compilation} */ (this.compilation);
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| 70 | const chunk = /** @type {Chunk} */ (this.chunk);
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| 71 | const {
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| 72 | chunkGraph,
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| 73 | runtimeTemplate,
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| 74 | outputOptions: {
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| 75 | crossOriginLoading,
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| 76 | uniqueName,
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| 77 | chunkLoadTimeout: loadTimeout
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| 78 | }
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| 79 | } = compilation;
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| 80 | const fn = RuntimeGlobals.ensureChunkHandlers;
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| 81 | const conditionMap = chunkGraph.getChunkConditionMap(
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| 82 | /** @type {Chunk} */ (chunk),
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| 83 | /**
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| 84 | * @param {Chunk} chunk the chunk
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| 85 | * @param {ChunkGraph} chunkGraph the chunk graph
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| 86 | * @returns {boolean} true, if the chunk has css
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| 87 | */
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| 88 | (chunk, chunkGraph) =>
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| 89 | Boolean(chunkGraph.getChunkModulesIterableBySourceType(chunk, "css"))
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| 90 | );
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| 91 | const hasCssMatcher = compileBooleanMatcher(conditionMap);
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| 92 |
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| 93 | const withLoading =
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| 94 | _runtimeRequirements.has(RuntimeGlobals.ensureChunkHandlers) &&
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| 95 | hasCssMatcher !== false;
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| 96 | /** @type {boolean} */
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| 97 | const withHmr = _runtimeRequirements.has(
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| 98 | RuntimeGlobals.hmrDownloadUpdateHandlers
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| 99 | );
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| 100 | /** @type {Set<number | string | null>} */
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| 101 | const initialChunkIds = new Set();
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| 102 | for (const c of /** @type {Chunk} */ (chunk).getAllInitialChunks()) {
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| 103 | if (chunkHasCss(c, chunkGraph)) {
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| 104 | initialChunkIds.add(c.id);
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| 105 | }
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| 106 | }
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| 107 |
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| 108 | if (!withLoading && !withHmr) {
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| 109 | return null;
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| 110 | }
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| 111 |
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| 112 | const environment =
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| 113 | /** @type {Environment} */
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| 114 | (compilation.outputOptions.environment);
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| 115 | const isNeutralPlatform = runtimeTemplate.isNeutralPlatform();
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| 116 | const withPrefetch =
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| 117 | this._runtimeRequirements.has(RuntimeGlobals.prefetchChunkHandlers) &&
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| 118 | (environment.document || isNeutralPlatform) &&
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| 119 | chunk.hasChildByOrder(chunkGraph, "prefetch", true, chunkHasCss);
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| 120 | const withPreload =
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| 121 | this._runtimeRequirements.has(RuntimeGlobals.preloadChunkHandlers) &&
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| 122 | (environment.document || isNeutralPlatform) &&
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| 123 | chunk.hasChildByOrder(chunkGraph, "preload", true, chunkHasCss);
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| 124 |
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| 125 | const { linkPreload, linkPrefetch } =
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| 126 | CssLoadingRuntimeModule.getCompilationHooks(compilation);
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| 127 |
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| 128 | const withFetchPriority = _runtimeRequirements.has(
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| 129 | RuntimeGlobals.hasFetchPriority
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| 130 | );
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| 131 |
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| 132 | const { createStylesheet } =
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| 133 | CssLoadingRuntimeModule.getCompilationHooks(compilation);
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| 134 |
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| 135 | const stateExpression = withHmr
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| 136 | ? `${RuntimeGlobals.hmrRuntimeStatePrefix}_css`
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| 137 | : undefined;
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| 138 |
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| 139 | const code = Template.asString([
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| 140 | "link = document.createElement('link');",
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| 141 | `if (${RuntimeGlobals.scriptNonce}) {`,
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| 142 | Template.indent(
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| 143 | `link.setAttribute("nonce", ${RuntimeGlobals.scriptNonce});`
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| 144 | ),
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| 145 | "}",
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| 146 | uniqueName
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| 147 | ? 'link.setAttribute("data-webpack", uniqueName + ":" + key);'
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| 148 | : "",
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| 149 | withFetchPriority
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| 150 | ? Template.asString([
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| 151 | "if(fetchPriority) {",
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| 152 | Template.indent(
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| 153 | 'link.setAttribute("fetchpriority", fetchPriority);'
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| 154 | ),
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| 155 | "}"
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| 156 | ])
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| 157 | : "",
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| 158 | "link.setAttribute(loadingAttribute, 1);",
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| 159 | 'link.rel = "stylesheet";',
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| 160 | "link.href = url;",
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| 161 | crossOriginLoading
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| 162 | ? crossOriginLoading === "use-credentials"
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| 163 | ? 'link.crossOrigin = "use-credentials";'
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| 164 | : Template.asString([
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| 165 | "if (link.href.indexOf(window.location.origin + '/') !== 0) {",
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| 166 | Template.indent(
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| 167 | `link.crossOrigin = ${JSON.stringify(crossOriginLoading)};`
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| 168 | ),
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| 169 | "}"
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| 170 | ])
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| 171 | : ""
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| 172 | ]);
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| 173 |
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| 174 | return Template.asString([
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| 175 | "// object to store loaded and loading chunks",
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| 176 | "// undefined = chunk not loaded, null = chunk preloaded/prefetched",
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| 177 | "// [resolve, reject, Promise] = chunk loading, 0 = chunk loaded",
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| 178 | `var installedChunks = ${
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| 179 | stateExpression ? `${stateExpression} = ${stateExpression} || ` : ""
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| 180 | }{`,
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| 181 | Template.indent(
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| 182 | Array.from(initialChunkIds, id => `${JSON.stringify(id)}: 0`).join(
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| 183 | ",\n"
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| 184 | )
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| 185 | ),
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| 186 | "};",
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| 187 | "",
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| 188 | uniqueName
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| 189 | ? `var uniqueName = ${JSON.stringify(
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| 190 | runtimeTemplate.outputOptions.uniqueName
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| 191 | )};`
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| 192 | : "// data-webpack is not used as build has no uniqueName",
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| 193 | withLoading || withHmr
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| 194 | ? Template.asString([
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| 195 | 'var loadingAttribute = "data-webpack-loading";',
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| 196 | `var loadStylesheet = ${runtimeTemplate.basicFunction(
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| 197 | `chunkId, url, done${
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| 198 | withFetchPriority ? ", fetchPriority" : ""
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| 199 | }${withHmr ? ", hmr" : ""}`,
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| 200 | [
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| 201 | 'var link, needAttach, key = "chunk-" + chunkId;',
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| 202 | withHmr ? "if(!hmr) {" : "",
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| 203 | 'var links = document.getElementsByTagName("link");',
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| 204 | "for(var i = 0; i < links.length; i++) {",
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| 205 | Template.indent([
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| 206 | "var l = links[i];",
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| 207 | `if(l.rel == "stylesheet" && (${
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| 208 | withHmr
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| 209 | ? 'l.href.startsWith(url) || l.getAttribute("href").startsWith(url)'
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| 210 | : 'l.href == url || l.getAttribute("href") == url'
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| 211 | }${
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| 212 | uniqueName
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| 213 | ? ' || l.getAttribute("data-webpack") == uniqueName + ":" + key'
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| 214 | : ""
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| 215 | })) { link = l; break; }`
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| 216 | ]),
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| 217 | "}",
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| 218 | "if(!done) return link;",
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| 219 | withHmr ? "}" : "",
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| 220 | "if(!link) {",
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| 221 | Template.indent([
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| 222 | "needAttach = true;",
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| 223 | createStylesheet.call(code, /** @type {Chunk} */ (this.chunk))
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| 224 | ]),
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| 225 | "}",
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| 226 | `var onLinkComplete = ${runtimeTemplate.basicFunction(
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| 227 | "prev, event",
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| 228 | Template.asString([
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| 229 | "link.onerror = link.onload = null;",
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| 230 | "link.removeAttribute(loadingAttribute);",
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| 231 | "clearTimeout(timeout);",
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| 232 | 'if(event && event.type != "load") link.parentNode.removeChild(link)',
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| 233 | "done(event);",
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| 234 | "if(prev) return prev(event);"
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| 235 | ])
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| 236 | )};`,
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| 237 | "if(link.getAttribute(loadingAttribute)) {",
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| 238 | Template.indent([
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| 239 | `var timeout = setTimeout(onLinkComplete.bind(null, undefined, { type: 'timeout', target: link }), ${loadTimeout});`,
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| 240 | "link.onerror = onLinkComplete.bind(null, link.onerror);",
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| 241 | "link.onload = onLinkComplete.bind(null, link.onload);"
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| 242 | ]),
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| 243 | "} else onLinkComplete(undefined, { type: 'load', target: link });", // We assume any existing stylesheet is render blocking
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| 244 | withHmr && withFetchPriority
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| 245 | ? 'if (hmr && hmr.getAttribute("fetchpriority")) link.setAttribute("fetchpriority", hmr.getAttribute("fetchpriority"));'
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| 246 | : "",
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| 247 | withHmr ? "hmr ? document.head.insertBefore(link, hmr) :" : "",
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| 248 | "needAttach && document.head.appendChild(link);",
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| 249 | "return link;"
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| 250 | ]
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| 251 | )};`
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| 252 | ])
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| 253 | : "",
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| 254 | withLoading
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| 255 | ? Template.asString([
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| 256 | `${fn}.css = ${runtimeTemplate.basicFunction(
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| 257 | `chunkId, promises${withFetchPriority ? " , fetchPriority" : ""}`,
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| 258 | [
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| 259 | "// css chunk loading",
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| 260 | `var installedChunkData = ${RuntimeGlobals.hasOwnProperty}(installedChunks, chunkId) ? installedChunks[chunkId] : undefined;`,
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| 261 | 'if(installedChunkData !== 0) { // 0 means "already installed".',
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| 262 | Template.indent([
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| 263 | "",
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| 264 | '// a Promise means "currently loading".',
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| 265 | "if(installedChunkData) {",
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| 266 | Template.indent(["promises.push(installedChunkData[2]);"]),
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| 267 | "} else {",
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| 268 | Template.indent([
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| 269 | hasCssMatcher === true
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| 270 | ? "if(true) { // all chunks have CSS"
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| 271 | : `if(${hasCssMatcher("chunkId")}) {`,
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| 272 | Template.indent([
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| 273 | "// setup Promise in chunk cache",
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| 274 | `var promise = new Promise(${runtimeTemplate.expressionFunction(
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| 275 | "installedChunkData = installedChunks[chunkId] = [resolve, reject]",
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| 276 | "resolve, reject"
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| 277 | )});`,
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| 278 | "promises.push(installedChunkData[2] = promise);",
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| 279 | "",
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| 280 | "// start chunk loading",
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| 281 | `var url = ${RuntimeGlobals.publicPath} + ${RuntimeGlobals.getChunkCssFilename}(chunkId);`,
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| 282 | "// create error before stack unwound to get useful stacktrace later",
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| 283 | "var error = new Error();",
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| 284 | `var loadingEnded = ${runtimeTemplate.basicFunction(
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| 285 | "event",
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| 286 | [
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| 287 | `if(${RuntimeGlobals.hasOwnProperty}(installedChunks, chunkId)) {`,
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| 288 | Template.indent([
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| 289 | "installedChunkData = installedChunks[chunkId];",
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| 290 | "if(installedChunkData !== 0) installedChunks[chunkId] = undefined;",
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| 291 | "if(installedChunkData) {",
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| 292 | Template.indent([
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| 293 | 'if(event.type !== "load") {',
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| 294 | Template.indent([
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| 295 | "var errorType = event && event.type;",
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| 296 | "var realHref = event && event.target && event.target.href;",
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| 297 | "error.message = 'Loading css chunk ' + chunkId + ' failed.\\n(' + errorType + ': ' + realHref + ')';",
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| 298 | "error.name = 'ChunkLoadError';",
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| 299 | "error.type = errorType;",
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| 300 | "error.request = realHref;",
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| 301 | "installedChunkData[1](error);"
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| 302 | ]),
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| 303 | "} else {",
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| 304 | Template.indent([
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| 305 | "installedChunks[chunkId] = 0;",
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| 306 | "installedChunkData[0]();"
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| 307 | ]),
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| 308 | "}"
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| 309 | ]),
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| 310 | "}"
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| 311 | ]),
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| 312 | "}"
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| 313 | ]
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| 314 | )};`,
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| 315 | isNeutralPlatform
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| 316 | ? "if (typeof document !== 'undefined') {"
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| 317 | : "",
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| 318 | Template.indent([
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| 319 | `loadStylesheet(chunkId, url, loadingEnded${
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| 320 | withFetchPriority ? ", fetchPriority" : ""
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| 321 | });`
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| 322 | ]),
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| 323 | isNeutralPlatform
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| 324 | ? "} else { loadingEnded({ type: 'load' }); }"
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| 325 | : ""
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| 326 | ]),
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| 327 | "} else installedChunks[chunkId] = 0;"
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| 328 | ]),
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| 329 | "}"
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| 330 | ]),
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| 331 | "}"
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| 332 | ]
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| 333 | )};`
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| 334 | ])
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| 335 | : "// no chunk loading",
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| 336 | "",
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| 337 | withPrefetch && hasCssMatcher !== false
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| 338 | ? `${
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| 339 | RuntimeGlobals.prefetchChunkHandlers
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| 340 | }.s = ${runtimeTemplate.basicFunction("chunkId", [
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| 341 | `if((!${
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| 342 | RuntimeGlobals.hasOwnProperty
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| 343 | }(installedChunks, chunkId) || installedChunks[chunkId] === undefined) && ${
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| 344 | hasCssMatcher === true ? "true" : hasCssMatcher("chunkId")
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| 345 | }) {`,
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| 346 | Template.indent([
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| 347 | "installedChunks[chunkId] = null;",
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| 348 | isNeutralPlatform
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| 349 | ? "if (typeof document === 'undefined') return;"
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| 350 | : "",
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| 351 | linkPrefetch.call(
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| 352 | Template.asString([
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| 353 | "var link = document.createElement('link');",
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| 354 | crossOriginLoading
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| 355 | ? `link.crossOrigin = ${JSON.stringify(
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| 356 | crossOriginLoading
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| 357 | )};`
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| 358 | : "",
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| 359 | `if (${RuntimeGlobals.scriptNonce}) {`,
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| 360 | Template.indent(
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| 361 | `link.setAttribute("nonce", ${RuntimeGlobals.scriptNonce});`
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| 362 | ),
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| 363 | "}",
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| 364 | 'link.rel = "prefetch";',
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| 365 | 'link.as = "style";',
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| 366 | `link.href = ${RuntimeGlobals.publicPath} + ${RuntimeGlobals.getChunkCssFilename}(chunkId);`
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| 367 | ]),
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| 368 | chunk
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| 369 | ),
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| 370 | "document.head.appendChild(link);"
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| 371 | ]),
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| 372 | "}"
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| 373 | ])};`
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| 374 | : "// no prefetching",
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| 375 | "",
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| 376 | withPreload && hasCssMatcher !== false
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| 377 | ? `${
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| 378 | RuntimeGlobals.preloadChunkHandlers
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| 379 | }.s = ${runtimeTemplate.basicFunction("chunkId", [
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| 380 | `if((!${
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| 381 | RuntimeGlobals.hasOwnProperty
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| 382 | }(installedChunks, chunkId) || installedChunks[chunkId] === undefined) && ${
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| 383 | hasCssMatcher === true ? "true" : hasCssMatcher("chunkId")
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| 384 | }) {`,
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| 385 | Template.indent([
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| 386 | "installedChunks[chunkId] = null;",
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| 387 | isNeutralPlatform
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| 388 | ? "if (typeof document === 'undefined') return;"
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| 389 | : "",
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| 390 | linkPreload.call(
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| 391 | Template.asString([
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| 392 | "var link = document.createElement('link');",
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| 393 | "link.charset = 'utf-8';",
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| 394 | `if (${RuntimeGlobals.scriptNonce}) {`,
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| 395 | Template.indent(
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| 396 | `link.setAttribute("nonce", ${RuntimeGlobals.scriptNonce});`
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| 397 | ),
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| 398 | "}",
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| 399 | 'link.rel = "preload";',
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| 400 | 'link.as = "style";',
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| 401 | `link.href = ${RuntimeGlobals.publicPath} + ${RuntimeGlobals.getChunkCssFilename}(chunkId);`,
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| 402 | crossOriginLoading
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| 403 | ? crossOriginLoading === "use-credentials"
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| 404 | ? 'link.crossOrigin = "use-credentials";'
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| 405 | : Template.asString([
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| 406 | "if (link.href.indexOf(window.location.origin + '/') !== 0) {",
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| 407 | Template.indent(
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| 408 | `link.crossOrigin = ${JSON.stringify(
|
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| 409 | crossOriginLoading
|
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| 410 | )};`
|
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| 411 | ),
|
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| 412 | "}"
|
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| 413 | ])
|
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| 414 | : ""
|
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| 415 | ]),
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| 416 | chunk
|
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| 417 | ),
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| 418 | "document.head.appendChild(link);"
|
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| 419 | ]),
|
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| 420 | "}"
|
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| 421 | ])};`
|
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| 422 | : "// no preloaded",
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| 423 | withHmr
|
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| 424 | ? Template.asString([
|
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| 425 | "var oldTags = [];",
|
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| 426 | "var newTags = [];",
|
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| 427 | `var applyHandler = ${runtimeTemplate.basicFunction("options", [
|
|---|
| 428 | `return { dispose: ${runtimeTemplate.basicFunction("", [
|
|---|
| 429 | "while(oldTags.length) {",
|
|---|
| 430 | Template.indent([
|
|---|
| 431 | "var oldTag = oldTags.pop();",
|
|---|
| 432 | "if(oldTag.parentNode) oldTag.parentNode.removeChild(oldTag);"
|
|---|
| 433 | ]),
|
|---|
| 434 | "}"
|
|---|
| 435 | ])}, apply: ${runtimeTemplate.basicFunction("", [
|
|---|
| 436 | "while(newTags.length) {",
|
|---|
| 437 | Template.indent([
|
|---|
| 438 | "var newTag = newTags.pop();",
|
|---|
| 439 | "newTag.sheet.disabled = false"
|
|---|
| 440 | ]),
|
|---|
| 441 | "}"
|
|---|
| 442 | ])} };`
|
|---|
| 443 | ])}`,
|
|---|
| 444 | `var cssTextKey = ${runtimeTemplate.returningFunction(
|
|---|
| 445 | `Array.from(link.sheet.cssRules, ${runtimeTemplate.returningFunction(
|
|---|
| 446 | "r.cssText",
|
|---|
| 447 | "r"
|
|---|
| 448 | )}).join()`,
|
|---|
| 449 | "link"
|
|---|
| 450 | )};`,
|
|---|
| 451 | `${
|
|---|
| 452 | RuntimeGlobals.hmrDownloadUpdateHandlers
|
|---|
| 453 | }.css = ${runtimeTemplate.basicFunction(
|
|---|
| 454 | "chunkIds, removedChunks, removedModules, promises, applyHandlers, updatedModulesList",
|
|---|
| 455 | [
|
|---|
| 456 | isNeutralPlatform
|
|---|
| 457 | ? "if (typeof document === 'undefined') return;"
|
|---|
| 458 | : "",
|
|---|
| 459 | "applyHandlers.push(applyHandler);",
|
|---|
| 460 | `chunkIds.forEach(${runtimeTemplate.basicFunction("chunkId", [
|
|---|
| 461 | `var filename = ${RuntimeGlobals.getChunkCssFilename}(chunkId);`,
|
|---|
| 462 | `var url = ${RuntimeGlobals.publicPath} + filename;`,
|
|---|
| 463 | "var oldTag = loadStylesheet(chunkId, url);",
|
|---|
| 464 | "if(!oldTag) return;",
|
|---|
| 465 | `promises.push(new Promise(${runtimeTemplate.basicFunction(
|
|---|
| 466 | "resolve, reject",
|
|---|
| 467 | [
|
|---|
| 468 | `var link = loadStylesheet(chunkId, url + (url.indexOf("?") < 0 ? "?" : "&") + "hmr=" + Date.now(), ${runtimeTemplate.basicFunction(
|
|---|
| 469 | "event",
|
|---|
| 470 | [
|
|---|
| 471 | 'if(event.type !== "load") {',
|
|---|
| 472 | Template.indent([
|
|---|
| 473 | "var errorType = event && event.type;",
|
|---|
| 474 | "var realHref = event && event.target && event.target.href;",
|
|---|
| 475 | "error.message = 'Loading css hot update chunk ' + chunkId + ' failed.\\n(' + errorType + ': ' + realHref + ')';",
|
|---|
| 476 | "error.name = 'ChunkLoadError';",
|
|---|
| 477 | "error.type = errorType;",
|
|---|
| 478 | "error.request = realHref;",
|
|---|
| 479 | "reject(error);"
|
|---|
| 480 | ]),
|
|---|
| 481 | "} else {",
|
|---|
| 482 | Template.indent([
|
|---|
| 483 | "try { if(cssTextKey(oldTag) == cssTextKey(link)) { if(link.parentNode) link.parentNode.removeChild(link); return resolve(); } } catch(e) {}",
|
|---|
| 484 | "link.sheet.disabled = true;",
|
|---|
| 485 | "oldTags.push(oldTag);",
|
|---|
| 486 | "newTags.push(link);",
|
|---|
| 487 | "resolve();"
|
|---|
| 488 | ]),
|
|---|
| 489 | "}"
|
|---|
| 490 | ]
|
|---|
| 491 | )}, ${withFetchPriority ? "undefined," : ""} oldTag);`
|
|---|
| 492 | ]
|
|---|
| 493 | )}));`
|
|---|
| 494 | ])});`
|
|---|
| 495 | ]
|
|---|
| 496 | )}`
|
|---|
| 497 | ])
|
|---|
| 498 | : "// no hmr"
|
|---|
| 499 | ]);
|
|---|
| 500 | }
|
|---|
| 501 | }
|
|---|
| 502 |
|
|---|
| 503 | module.exports = CssLoadingRuntimeModule;
|
|---|
