328 lines
13 KiB
JavaScript
328 lines
13 KiB
JavaScript
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'use strict';
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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var _fs = require('fs');
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var _fs2 = _interopRequireDefault(_fs);
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var _path = require('path');
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var _path2 = _interopRequireDefault(_path);
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var _webpack = require('webpack');
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var _webpack2 = _interopRequireDefault(_webpack);
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var _webpackSources = require('webpack-sources');
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var _webpackSources2 = _interopRequireDefault(_webpackSources);
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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const { ConcatSource, SourceMapSource, OriginalSource } = _webpackSources2.default;
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const { Template, util: { createHash } } = _webpack2.default;
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const NS = _path2.default.dirname(_fs2.default.realpathSync(__filename));
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const pluginName = 'mini-css-extract-plugin';
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const REGEXP_CHUNKHASH = /\[chunkhash(?::(\d+))?\]/i;
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const REGEXP_CONTENTHASH = /\[contenthash(?::(\d+))?\]/i;
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const REGEXP_NAME = /\[name\]/i;
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class CssDependency extends _webpack2.default.Dependency {
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constructor({ identifier, content, media, sourceMap }, context, identifierIndex) {
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super();
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this.identifier = identifier;
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this.identifierIndex = identifierIndex;
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this.content = content;
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this.media = media;
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this.sourceMap = sourceMap;
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this.context = context;
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}
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getResourceIdentifier() {
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return `css-module-${this.identifier}-${this.identifierIndex}`;
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}
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}
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class CssDependencyTemplate {
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apply() {}
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}
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class CssModule extends _webpack2.default.Module {
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constructor(dependency) {
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super(NS, dependency.context);
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this._identifier = dependency.identifier;
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this._identifierIndex = dependency.identifierIndex;
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this.content = dependency.content;
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this.media = dependency.media;
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this.sourceMap = dependency.sourceMap;
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}
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// no source() so webpack doesn't do add stuff to the bundle
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size() {
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return this.content.length;
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}
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identifier() {
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return `css ${this._identifier} ${this._identifierIndex}`;
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}
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readableIdentifier(requestShortener) {
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return `css ${requestShortener.shorten(this._identifier)}${this._identifierIndex ? ` (${this._identifierIndex})` : ''}`;
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}
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nameForCondition() {
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const resource = this._identifier.split('!').pop();
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const idx = resource.indexOf('?');
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if (idx >= 0) return resource.substring(0, idx);
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return resource;
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}
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updateCacheModule(module) {
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this.content = module.content;
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this.media = module.media;
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this.sourceMap = module.sourceMap;
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}
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needRebuild() {
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return true;
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}
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build(options, compilation, resolver, fileSystem, callback) {
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this.buildInfo = {};
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this.buildMeta = {};
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callback();
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}
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updateHash(hash) {
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super.updateHash(hash);
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hash.update(this.content);
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hash.update(this.media || '');
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hash.update(JSON.stringify(this.sourceMap || ''));
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}
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}
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class CssModuleFactory {
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create({ dependencies: [dependency] }, callback) {
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callback(null, new CssModule(dependency));
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}
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}
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class MiniCssExtractPlugin {
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constructor(options) {
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this.options = Object.assign({
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filename: '[name].css'
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}, options);
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if (!this.options.chunkFilename) {
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const { filename } = this.options;
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const hasName = filename.includes('[name]');
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const hasId = filename.includes('[id]');
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const hasChunkHash = filename.includes('[chunkhash]');
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// Anything changing depending on chunk is fine
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if (hasChunkHash || hasName || hasId) {
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this.options.chunkFilename = filename;
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} else {
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// Elsewise prefix '[id].' in front of the basename to make it changing
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this.options.chunkFilename = filename.replace(/(^|\/)([^/]*(?:\?|$))/, '$1[id].$2');
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}
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}
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}
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apply(compiler) {
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compiler.hooks.thisCompilation.tap(pluginName, compilation => {
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compilation.hooks.normalModuleLoader.tap(pluginName, (lc, m) => {
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const loaderContext = lc;
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const module = m;
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loaderContext[NS] = content => {
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if (!Array.isArray(content) && content != null) {
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throw new Error(`Exported value was not extracted as an array: ${JSON.stringify(content)}`);
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}
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const identifierCountMap = new Map();
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for (const line of content) {
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const count = identifierCountMap.get(line.identifier) || 0;
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module.addDependency(new CssDependency(line, m.context, count));
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identifierCountMap.set(line.identifier, count + 1);
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}
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};
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});
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compilation.dependencyFactories.set(CssDependency, new CssModuleFactory());
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compilation.dependencyTemplates.set(CssDependency, new CssDependencyTemplate());
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compilation.mainTemplate.hooks.renderManifest.tap(pluginName, (result, { chunk }) => {
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const renderedModules = Array.from(chunk.modulesIterable).filter(module => module.type === NS);
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if (renderedModules.length > 0) {
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result.push({
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render: () => this.renderContentAsset(chunk, renderedModules, compilation.runtimeTemplate.requestShortener),
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filenameTemplate: this.options.filename,
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pathOptions: {
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chunk,
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contentHashType: NS
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},
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identifier: `${pluginName}.${chunk.id}`,
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hash: chunk.contentHash[NS]
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});
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}
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});
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compilation.chunkTemplate.hooks.renderManifest.tap(pluginName, (result, { chunk }) => {
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const renderedModules = Array.from(chunk.modulesIterable).filter(module => module.type === NS);
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if (renderedModules.length > 0) {
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result.push({
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render: () => this.renderContentAsset(chunk, renderedModules, compilation.runtimeTemplate.requestShortener),
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filenameTemplate: this.options.chunkFilename,
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pathOptions: {
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chunk,
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contentHashType: NS
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},
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identifier: `${pluginName}.${chunk.id}`,
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hash: chunk.contentHash[NS]
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});
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}
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});
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compilation.mainTemplate.hooks.hashForChunk.tap(pluginName, (hash, chunk) => {
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const { chunkFilename } = this.options;
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if (REGEXP_CHUNKHASH.test(chunkFilename)) {
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hash.update(JSON.stringify(chunk.getChunkMaps(true).hash));
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}
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if (REGEXP_CONTENTHASH.test(chunkFilename)) {
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hash.update(JSON.stringify(chunk.getChunkMaps(true).contentHash[NS] || {}));
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}
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if (REGEXP_NAME.test(chunkFilename)) {
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hash.update(JSON.stringify(chunk.getChunkMaps(true).name));
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}
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});
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compilation.hooks.contentHash.tap(pluginName, chunk => {
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const { outputOptions } = compilation;
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const { hashFunction, hashDigest, hashDigestLength } = outputOptions;
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const hash = createHash(hashFunction);
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for (const m of chunk.modulesIterable) {
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if (m.type === NS) {
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m.updateHash(hash);
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}
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}
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const { contentHash } = chunk;
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contentHash[NS] = hash.digest(hashDigest).substring(0, hashDigestLength);
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});
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const { mainTemplate } = compilation;
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mainTemplate.hooks.localVars.tap(pluginName, (source, chunk) => {
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const chunkMap = this.getCssChunkObject(chunk);
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if (Object.keys(chunkMap).length > 0) {
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return Template.asString([source, '', '// object to store loaded CSS chunks', 'var installedCssChunks = {', Template.indent(chunk.ids.map(id => `${JSON.stringify(id)}: 0`).join(',\n')), '}']);
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}
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return source;
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});
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mainTemplate.hooks.requireEnsure.tap(pluginName, (source, chunk, hash) => {
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const chunkMap = this.getCssChunkObject(chunk);
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if (Object.keys(chunkMap).length > 0) {
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const chunkMaps = chunk.getChunkMaps();
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const linkHrefPath = mainTemplate.getAssetPath(JSON.stringify(this.options.chunkFilename), {
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hash: `" + ${mainTemplate.renderCurrentHashCode(hash)} + "`,
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hashWithLength: length => `" + ${mainTemplate.renderCurrentHashCode(hash, length)} + "`,
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chunk: {
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id: '" + chunkId + "',
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hash: `" + ${JSON.stringify(chunkMaps.hash)}[chunkId] + "`,
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hashWithLength(length) {
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const shortChunkHashMap = Object.create(null);
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for (const chunkId of Object.keys(chunkMaps.hash)) {
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if (typeof chunkMaps.hash[chunkId] === 'string') {
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shortChunkHashMap[chunkId] = chunkMaps.hash[chunkId].substring(0, length);
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}
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}
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return `" + ${JSON.stringify(shortChunkHashMap)}[chunkId] + "`;
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},
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contentHash: {
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[NS]: `" + ${JSON.stringify(chunkMaps.contentHash[NS])}[chunkId] + "`
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},
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contentHashWithLength: {
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[NS]: length => {
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const shortContentHashMap = {};
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const contentHash = chunkMaps.contentHash[NS];
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for (const chunkId of Object.keys(contentHash)) {
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if (typeof contentHash[chunkId] === 'string') {
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shortContentHashMap[chunkId] = contentHash[chunkId].substring(0, length);
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}
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}
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return `" + ${JSON.stringify(shortContentHashMap)}[chunkId] + "`;
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}
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},
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name: `" + (${JSON.stringify(chunkMaps.name)}[chunkId]||chunkId) + "`
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},
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contentHashType: NS
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});
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return Template.asString([source, '', `// ${pluginName} CSS loading`, `var cssChunks = ${JSON.stringify(chunkMap)};`, 'if(installedCssChunks[chunkId]) promises.push(installedCssChunks[chunkId]);', 'else if(installedCssChunks[chunkId] !== 0 && cssChunks[chunkId]) {', Template.indent(['promises.push(installedCssChunks[chunkId] = new Promise(function(resolve, reject) {', Template.indent([`var href = ${linkHrefPath};`, `var fullhref = ${mainTemplate.requireFn}.p + href;`, 'var existingLinkTags = document.getElementsByTagName("link");', 'for(var i = 0; i < existingLinkTags.length; i++) {', Template.indent(['var tag = existingLinkTags[i];', 'var dataHref = tag.getAttribute("data-href") || tag.getAttribute("href");', 'if(tag.rel === "stylesheet" && (dataHref === href || dataHref === fullhref)) return resolve();']), '}', 'var existingStyleTags = document.getElementsByTagName("style");', 'for(var i = 0; i < existingStyleTags.length; i++) {', Template.indent(['var tag = existingStyleTags[i];', 'var dataHref = tag.getAttribute("data-href");', 'if(dataHref === href || dataHref === fullhref) return resolve();']), '}', 'var linkTag = document.createElement("link");', 'linkTag.rel = "stylesheet";', 'linkTag.type = "text/css";', 'linkTag.onload = resolve;', 'linkTag.onerror = function(event) {', Template.indent(['var request = event && event.target && event.target.src || fullhref;', 'var err = new Error("Loading CSS chunk " + chunkId + " failed.\\n(" + request + ")");', 'err.request = request;', 'reject(err);']), '};', 'linkTag.href = fullhref;', 'var head = document.getElementsByTagName("head")[0];', 'head.appendChild(linkTag);']), '}).then(function() {', Template.indent(['installedCssChunks[chunkId] = 0;']), '}));']), '}']);
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}
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return source;
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});
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});
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}
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getCssChunkObject(mainChunk) {
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const obj = {};
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for (const chunk of mainChunk.getAllAsyncChunks()) {
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for (const module of chunk.modulesIterable) {
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if (module.type === NS) {
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obj[chunk.id] = 1;
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break;
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}
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}
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}
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return obj;
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}
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renderContentAsset(chunk, modules, requestShortener) {
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// get first chunk group and take ordr from this one
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// When a chunk is shared between multiple chunk groups
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// with different order this can lead to wrong order
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// but it's not possible to create a correct order in
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// this case. Don't share chunks if you don't like it.
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const [chunkGroup] = chunk.groupsIterable;
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if (typeof chunkGroup.getModuleIndex2 === 'function') {
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modules.sort((a, b) => chunkGroup.getModuleIndex2(a) - chunkGroup.getModuleIndex2(b));
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} else {
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// fallback for older webpack versions
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// (to avoid a breaking change)
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// TODO remove this in next mayor version
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// and increase minimum webpack version to 4.12.0
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modules.sort((a, b) => a.index2 - b.index2);
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}
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const source = new ConcatSource();
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const externalsSource = new ConcatSource();
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for (const m of modules) {
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if (/^@import url/.test(m.content)) {
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// HACK for IE
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// http://stackoverflow.com/a/14676665/1458162
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let { content } = m;
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if (m.media) {
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// insert media into the @import
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// this is rar
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// TODO improve this and parse the CSS to support multiple medias
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content = content.replace(/;|\s*$/, m.media);
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}
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externalsSource.add(content);
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externalsSource.add('\n');
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} else {
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if (m.media) {
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source.add(`@media ${m.media} {\n`);
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}
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if (m.sourceMap) {
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source.add(new SourceMapSource(m.content, m.readableIdentifier(requestShortener), m.sourceMap));
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} else {
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source.add(new OriginalSource(m.content, m.readableIdentifier(requestShortener)));
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}
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source.add('\n');
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if (m.media) {
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source.add('}\n');
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}
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}
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}
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return new ConcatSource(externalsSource, source);
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}
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}
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MiniCssExtractPlugin.loader = require.resolve('./loader');
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exports.default = MiniCssExtractPlugin;
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