mirror of https://github.com/webpack/webpack.git
547 lines
16 KiB
JavaScript
547 lines
16 KiB
JavaScript
/*
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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 asyncLib = require("neo-async");
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const validateOptions = require("schema-utils");
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const { ConcatSource, RawSource } = require("webpack-sources");
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const Compilation = require("./Compilation");
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const ModuleFilenameHelpers = require("./ModuleFilenameHelpers");
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const ProgressPlugin = require("./ProgressPlugin");
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const SourceMapDevToolModuleOptionsPlugin = require("./SourceMapDevToolModuleOptionsPlugin");
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const createHash = require("./util/createHash");
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const { relative, dirname } = require("./util/fs");
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const { absolutify } = require("./util/identifier");
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const schema = require("../schemas/plugins/SourceMapDevToolPlugin.json");
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/** @typedef {import("source-map").RawSourceMap} SourceMap */
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/** @typedef {import("webpack-sources").Source} Source */
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/** @typedef {import("../declarations/plugins/SourceMapDevToolPlugin").SourceMapDevToolPluginOptions} SourceMapDevToolPluginOptions */
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/** @typedef {import("./Cache").Etag} Etag */
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/** @typedef {import("./CacheFacade").ItemCacheFacade} ItemCacheFacade */
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/** @typedef {import("./Chunk")} Chunk */
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/** @typedef {import("./Compilation").AssetInfo} AssetInfo */
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/** @typedef {import("./Compiler")} Compiler */
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/** @typedef {import("./Module")} Module */
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/** @typedef {import("./util/Hash")} Hash */
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/**
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* @typedef {object} SourceMapTask
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* @property {Source} asset
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* @property {AssetInfo} assetInfo
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* @property {(string | Module)[]} modules
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* @property {string} source
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* @property {string} file
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* @property {SourceMap} sourceMap
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* @property {ItemCacheFacade} cacheItem cache item
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*/
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/**
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* Escapes regular expression metacharacters
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* @param {string} str String to quote
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* @returns {string} Escaped string
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*/
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const quoteMeta = str => {
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return str.replace(/[-[\]\\/{}()*+?.^$|]/g, "\\$&");
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};
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/**
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* Creating {@link SourceMapTask} for given file
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* @param {string} file current compiled file
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* @param {Source} asset the asset
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* @param {AssetInfo} assetInfo the asset info
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* @param {SourceMapDevToolPluginOptions} options source map options
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* @param {Compilation} compilation compilation instance
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* @param {ItemCacheFacade} cacheItem cache item
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* @returns {SourceMapTask | undefined} created task instance or `undefined`
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*/
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const getTaskForFile = (
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file,
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asset,
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assetInfo,
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options,
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compilation,
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cacheItem
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) => {
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let source;
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/** @type {SourceMap} */
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let sourceMap;
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/**
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* Check if asset can build source map
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*/
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if (asset.sourceAndMap) {
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const sourceAndMap = asset.sourceAndMap(options);
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sourceMap = /** @type {SourceMap} */ (sourceAndMap.map);
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source = sourceAndMap.source;
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} else {
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sourceMap = /** @type {SourceMap} */ (asset.map(options));
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source = asset.source();
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}
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if (!sourceMap || typeof source !== "string") return;
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const context = compilation.options.context;
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const root = compilation.compiler.root;
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const cachedAbsolutify = absolutify.bindContextCache(context, root);
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const modules = sourceMap.sources.map(source => {
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if (!source.startsWith("webpack://")) return source;
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source = cachedAbsolutify(source.slice(10));
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const module = compilation.findModule(source);
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return module || source;
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});
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return {
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file,
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asset,
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source,
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assetInfo,
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sourceMap,
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modules,
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cacheItem
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};
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};
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class SourceMapDevToolPlugin {
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/**
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* @param {SourceMapDevToolPluginOptions} [options] options object
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* @throws {Error} throws error, if got more than 1 arguments
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*/
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constructor(options = {}) {
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validateOptions(schema, options, {
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name: "SourceMap DevTool Plugin",
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baseDataPath: "options"
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});
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/** @type {string | false} */
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this.sourceMapFilename = options.filename;
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/** @type {string | false} */
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this.sourceMappingURLComment =
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options.append === false
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? false
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: options.append || "\n//# source" + "MappingURL=[url]";
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/** @type {string | Function} */
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this.moduleFilenameTemplate =
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options.moduleFilenameTemplate || "webpack://[namespace]/[resourcePath]";
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/** @type {string | Function} */
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this.fallbackModuleFilenameTemplate =
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options.fallbackModuleFilenameTemplate ||
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"webpack://[namespace]/[resourcePath]?[hash]";
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/** @type {string} */
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this.namespace = options.namespace || "";
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/** @type {SourceMapDevToolPluginOptions} */
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this.options = options;
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}
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/**
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* Apply the plugin
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* @param {Compiler} compiler compiler instance
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* @returns {void}
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*/
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apply(compiler) {
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const outputFs = compiler.outputFileSystem;
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const sourceMapFilename = this.sourceMapFilename;
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const sourceMappingURLComment = this.sourceMappingURLComment;
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const moduleFilenameTemplate = this.moduleFilenameTemplate;
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const namespace = this.namespace;
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const fallbackModuleFilenameTemplate = this.fallbackModuleFilenameTemplate;
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const requestShortener = compiler.requestShortener;
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const options = this.options;
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options.test = options.test || /\.(m?js|css)($|\?)/i;
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const matchObject = ModuleFilenameHelpers.matchObject.bind(
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undefined,
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options
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);
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compiler.hooks.compilation.tap("SourceMapDevToolPlugin", compilation => {
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new SourceMapDevToolModuleOptionsPlugin(options).apply(compilation);
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compilation.hooks.processAssets.tapAsync(
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{
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name: "SourceMapDevToolPlugin",
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stage: Compilation.PROCESS_ASSETS_STAGE_DEV_TOOLING
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},
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(assets, callback) => {
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const chunkGraph = compilation.chunkGraph;
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const cache = compilation.getCache("SourceMapDevToolPlugin");
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/** @type {Map<string | Module, string>} */
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const moduleToSourceNameMapping = new Map();
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/**
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* @type {Function}
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* @returns {void}
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*/
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const reportProgress =
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ProgressPlugin.getReporter(compilation.compiler) || (() => {});
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/** @type {Map<string, Chunk>} */
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const fileToChunk = new Map();
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for (const chunk of compilation.chunks) {
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for (const file of chunk.files) {
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fileToChunk.set(file, chunk);
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}
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for (const file of chunk.auxiliaryFiles) {
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fileToChunk.set(file, chunk);
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}
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}
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/** @type {string[]} */
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const files = [];
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for (const file of Object.keys(assets)) {
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if (matchObject(file)) {
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files.push(file);
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}
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}
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reportProgress(0.0);
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/** @type {SourceMapTask[]} */
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const tasks = [];
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let fileIndex = 0;
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asyncLib.each(
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files,
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(file, callback) => {
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const asset = compilation.getAsset(file);
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if (asset.info.related && asset.info.related.sourceMap) {
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fileIndex++;
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return callback();
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}
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const cacheItem = cache.getItemCache(
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file,
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cache.getLazyHashedEtag(asset.source)
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);
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cacheItem.get((err, cacheEntry) => {
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if (err) {
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return callback(err);
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}
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/**
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* If presented in cache, reassigns assets. Cache assets already have source maps.
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*/
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if (cacheEntry) {
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const { assets, assetsInfo } = cacheEntry;
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for (const cachedFile of Object.keys(assets)) {
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if (cachedFile === file) {
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compilation.updateAsset(
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cachedFile,
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assets[cachedFile],
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assetsInfo[cachedFile]
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);
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} else {
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compilation.emitAsset(
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cachedFile,
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assets[cachedFile],
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assetsInfo[cachedFile]
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);
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}
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/**
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* Add file to chunk, if not presented there
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*/
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if (cachedFile !== file) {
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const chunk = fileToChunk.get(file);
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if (chunk !== undefined)
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chunk.auxiliaryFiles.add(cachedFile);
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}
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}
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reportProgress(
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(0.5 * ++fileIndex) / files.length,
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file,
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"restored cached SourceMap"
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);
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return callback();
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}
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reportProgress(
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(0.5 * fileIndex) / files.length,
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file,
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"generate SourceMap"
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);
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/** @type {SourceMapTask | undefined} */
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const task = getTaskForFile(
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file,
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asset.source,
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asset.info,
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options,
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compilation,
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cacheItem
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);
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if (task) {
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const modules = task.modules;
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for (let idx = 0; idx < modules.length; idx++) {
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const module = modules[idx];
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if (!moduleToSourceNameMapping.get(module)) {
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moduleToSourceNameMapping.set(
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module,
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ModuleFilenameHelpers.createFilename(
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module,
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{
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moduleFilenameTemplate: moduleFilenameTemplate,
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namespace: namespace
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},
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{
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requestShortener,
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chunkGraph
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}
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)
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);
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}
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}
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tasks.push(task);
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}
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reportProgress(
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(0.5 * ++fileIndex) / files.length,
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file,
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"generated SourceMap"
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);
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callback();
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});
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},
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err => {
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if (err) {
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return callback(err);
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}
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reportProgress(0.5, "resolve sources");
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/** @type {Set<string>} */
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const usedNamesSet = new Set(moduleToSourceNameMapping.values());
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/** @type {Set<string>} */
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const conflictDetectionSet = new Set();
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/**
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* all modules in defined order (longest identifier first)
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* @type {Array<string | Module>}
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*/
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const allModules = Array.from(
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moduleToSourceNameMapping.keys()
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).sort((a, b) => {
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const ai = typeof a === "string" ? a : a.identifier();
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const bi = typeof b === "string" ? b : b.identifier();
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return ai.length - bi.length;
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});
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// find modules with conflicting source names
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for (let idx = 0; idx < allModules.length; idx++) {
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const module = allModules[idx];
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let sourceName = moduleToSourceNameMapping.get(module);
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let hasName = conflictDetectionSet.has(sourceName);
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if (!hasName) {
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conflictDetectionSet.add(sourceName);
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continue;
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}
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// try the fallback name first
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sourceName = ModuleFilenameHelpers.createFilename(
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module,
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{
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moduleFilenameTemplate: fallbackModuleFilenameTemplate,
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namespace: namespace
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},
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{
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requestShortener,
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chunkGraph
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}
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);
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hasName = usedNamesSet.has(sourceName);
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if (!hasName) {
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moduleToSourceNameMapping.set(module, sourceName);
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usedNamesSet.add(sourceName);
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continue;
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}
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// otherwise just append stars until we have a valid name
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while (hasName) {
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sourceName += "*";
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hasName = usedNamesSet.has(sourceName);
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}
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moduleToSourceNameMapping.set(module, sourceName);
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usedNamesSet.add(sourceName);
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}
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let taskIndex = 0;
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asyncLib.each(
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tasks,
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(task, callback) => {
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const assets = Object.create(null);
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const assetsInfo = Object.create(null);
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const file = task.file;
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const chunk = fileToChunk.get(file);
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const sourceMap = task.sourceMap;
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const source = task.source;
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const modules = task.modules;
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reportProgress(
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0.5 + (0.5 * taskIndex) / tasks.length,
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file,
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"attach SourceMap"
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);
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const moduleFilenames = modules.map(m =>
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moduleToSourceNameMapping.get(m)
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);
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sourceMap.sources = moduleFilenames;
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if (options.noSources) {
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sourceMap.sourcesContent = undefined;
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}
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sourceMap.sourceRoot = options.sourceRoot || "";
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sourceMap.file = file;
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const usesContentHash =
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sourceMapFilename &&
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/\[contenthash(:\w+)?\]/.test(sourceMapFilename);
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// If SourceMap and asset uses contenthash, avoid a circular dependency by hiding hash in `file`
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if (usesContentHash && task.assetInfo.contenthash) {
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const contenthash = task.assetInfo.contenthash;
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let pattern;
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if (Array.isArray(contenthash)) {
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pattern = contenthash.map(quoteMeta).join("|");
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} else {
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pattern = quoteMeta(contenthash);
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}
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sourceMap.file = sourceMap.file.replace(
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new RegExp(pattern, "g"),
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m => "x".repeat(m.length)
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);
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}
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/** @type {string | false} */
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let currentSourceMappingURLComment = sourceMappingURLComment;
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if (
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currentSourceMappingURLComment !== false &&
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/\.css($|\?)/i.test(file)
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) {
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currentSourceMappingURLComment = currentSourceMappingURLComment.replace(
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/^\n\/\/(.*)$/,
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"\n/*$1*/"
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);
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}
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const sourceMapString = JSON.stringify(sourceMap);
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if (sourceMapFilename) {
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let filename = file;
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const sourceMapContentHash =
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usesContentHash &&
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/** @type {string} */ (createHash("md4")
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.update(sourceMapString)
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.digest("hex"));
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const pathParams = {
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chunk,
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filename: options.fileContext
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? relative(
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outputFs,
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`/${options.fileContext}`,
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`/${filename}`
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)
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: filename,
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contentHash: sourceMapContentHash
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};
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const {
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path: sourceMapFile,
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info: sourceMapInfo
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} = compilation.getPathWithInfo(
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sourceMapFilename,
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pathParams
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);
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const sourceMapUrl = options.publicPath
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? options.publicPath + sourceMapFile
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: relative(
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outputFs,
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dirname(outputFs, `/${file}`),
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`/${sourceMapFile}`
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);
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/** @type {Source} */
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let asset = new RawSource(source);
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if (currentSourceMappingURLComment !== false) {
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// Add source map url to compilation asset, if currentSourceMappingURLComment is set
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asset = new ConcatSource(
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asset,
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compilation.getPath(
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currentSourceMappingURLComment,
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Object.assign({ url: sourceMapUrl }, pathParams)
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)
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);
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}
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const assetInfo = {
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related: { sourceMap: sourceMapFile }
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};
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assets[file] = asset;
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assetsInfo[file] = assetInfo;
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compilation.updateAsset(file, asset, assetInfo);
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// Add source map file to compilation assets and chunk files
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const sourceMapAsset = new RawSource(sourceMapString);
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const sourceMapAssetInfo = {
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...sourceMapInfo,
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development: true
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};
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assets[sourceMapFile] = sourceMapAsset;
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assetsInfo[sourceMapFile] = sourceMapAssetInfo;
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compilation.emitAsset(
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sourceMapFile,
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sourceMapAsset,
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sourceMapAssetInfo
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);
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if (chunk !== undefined)
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chunk.auxiliaryFiles.add(sourceMapFile);
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} else {
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if (currentSourceMappingURLComment === false) {
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throw new Error(
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"SourceMapDevToolPlugin: append can't be false when no filename is provided"
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);
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}
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/**
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* Add source map as data url to asset
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*/
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const asset = new ConcatSource(
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new RawSource(source),
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currentSourceMappingURLComment
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.replace(/\[map\]/g, () => sourceMapString)
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.replace(
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/\[url\]/g,
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() =>
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`data:application/json;charset=utf-8;base64,${Buffer.from(
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sourceMapString,
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"utf-8"
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).toString("base64")}`
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)
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);
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assets[file] = asset;
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assetsInfo[file] = undefined;
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compilation.updateAsset(file, asset);
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}
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task.cacheItem.store({ assets, assetsInfo }, err => {
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reportProgress(
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0.5 + (0.5 * ++taskIndex) / tasks.length,
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task.file,
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"attached SourceMap"
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);
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if (err) {
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return callback(err);
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}
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callback();
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});
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},
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err => {
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reportProgress(1.0);
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callback(err);
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}
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);
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}
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);
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}
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);
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});
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}
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}
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module.exports = SourceMapDevToolPlugin;
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