601 lines
19 KiB
JavaScript
601 lines
19 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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exports.default = void 0;
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var path = _interopRequireWildcard(require("path"));
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var os = _interopRequireWildcard(require("os"));
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var _sourceMap = require("source-map");
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var _schemaUtils = require("schema-utils");
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var _serializeJavascript = _interopRequireDefault(require("serialize-javascript"));
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var terserPackageJson = _interopRequireWildcard(require("terser/package.json"));
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var _pLimit = _interopRequireDefault(require("p-limit"));
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var _jestWorker = _interopRequireDefault(require("jest-worker"));
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var schema = _interopRequireWildcard(require("./options.json"));
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var _minify = require("./minify");
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function () { return cache; }; return cache; }
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function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
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/** @typedef {import("schema-utils/declarations/validate").Schema} Schema */
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/** @typedef {import("webpack").Compiler} Compiler */
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/** @typedef {import("webpack").Compilation} Compilation */
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/** @typedef {import("webpack").Rules} Rules */
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/** @typedef {import("webpack").WebpackError} WebpackError */
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/** @typedef {import("webpack").Asset} Asset */
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/** @typedef {import("webpack").AssetInfo} AssetInfo */
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/** @typedef {import("terser").ECMA} TerserECMA */
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/** @typedef {import("terser").MinifyOptions} TerserMinifyOptions */
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/** @typedef {import("jest-worker").default} JestWorker */
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/** @typedef {import("source-map").RawSourceMap} RawSourceMap */
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/** @typedef {import("./minify.js").InternalMinifyOptions} InternalMinifyOptions */
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/** @typedef {import("./minify.js").InternalMinifyResult} InternalMinifyResult */
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/** @typedef {JestWorker & { transform: (options: string) => InternalMinifyResult, minify: (options: InternalMinifyOptions) => InternalMinifyResult }} MinifyWorker */
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/** @typedef {Object.<any, any> | TerserMinifyOptions} MinifyOptions */
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/**
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* @callback ExtractCommentsFunction
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* @param {any} astNode
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* @param {{ value: string, type: 'comment1' | 'comment2' | 'comment3' | 'comment4', pos: number, line: number, col: number }} comment
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* @returns {boolean}
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*/
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/**
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* @typedef {boolean | string | RegExp | ExtractCommentsFunction} ExtractCommentsCondition
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*/
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/**
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* @typedef {string | ((fileData: any) => string)} ExtractCommentsFilename
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*/
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/**
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* @typedef {boolean | string | ((commentsFile: string) => string)} ExtractCommentsBanner
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*/
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/**
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* @typedef {Object} ExtractCommentsObject
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* @property {ExtractCommentsCondition} condition
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* @property {ExtractCommentsFilename} filename
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* @property {ExtractCommentsBanner} banner
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*/
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/**
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* @callback CustomMinifyFunction
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* @param {Object.<string, string>} file
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* @param {RawSourceMap | undefined} sourceMap
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* @param {MinifyOptions} minifyOptions
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*/
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/**
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* @typedef {ExtractCommentsCondition | ExtractCommentsObject} ExtractCommentsOptions
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*/
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/**
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* @typedef {Object} TerserPluginOptions
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* @property {Rules} [test]
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* @property {Rules} [include]
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* @property {Rules} [exclude]
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* @property {MinifyOptions} [terserOptions]
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* @property {ExtractCommentsOptions} [extractComments]
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* @property {boolean} [parallel]
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* @property {CustomMinifyFunction} [minify]
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*/
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class TerserPlugin {
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/**
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* @param {TerserPluginOptions} options
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*/
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constructor(options = {}) {
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(0, _schemaUtils.validate)(
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/** @type {Schema} */
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schema, options, {
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name: "Terser Plugin",
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baseDataPath: "options"
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});
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const {
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minify,
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terserOptions = {},
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test = /\.[cm]?js(\?.*)?$/i,
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extractComments = true,
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parallel = true,
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include,
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exclude
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} = options;
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this.options = {
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test,
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extractComments,
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parallel,
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include,
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exclude,
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minify,
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terserOptions
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};
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}
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/**
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* @private
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* @param {any} input
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* @returns {boolean}
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*/
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static isSourceMap(input) {
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// All required options for `new SourceMapConsumer(...options)`
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// https://github.com/mozilla/source-map#new-sourcemapconsumerrawsourcemap
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return Boolean(input && input.version && input.sources && Array.isArray(input.sources) && typeof input.mappings === "string");
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}
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/**
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* @private
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* @param {Error & { line: number, col: number}} error
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* @param {string} file
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* @param {Compilation["requestShortener"]} [requestShortener]
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* @param {SourceMapConsumer} [sourceMap]
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* @returns {WebpackError}
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*/
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static buildError(error, file, requestShortener, sourceMap) {
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if (error.line) {
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const original = sourceMap && sourceMap.originalPositionFor({
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line: error.line,
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column: error.col
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});
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if (original && original.source && requestShortener) {
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return new Error(`${file} from Terser\n${error.message} [${requestShortener.shorten(original.source)}:${original.line},${original.column}][${file}:${error.line},${error.col}]${error.stack ? `\n${error.stack.split("\n").slice(1).join("\n")}` : ""}`);
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}
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return new Error(`${file} from Terser\n${error.message} [${file}:${error.line},${error.col}]${error.stack ? `\n${error.stack.split("\n").slice(1).join("\n")}` : ""}`);
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}
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if (error.stack) {
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return new Error(`${file} from Terser\n${error.stack}`);
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}
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return new Error(`${file} from Terser\n${error.message}`);
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}
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/**
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* @private
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* @param {boolean} parallel
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* @returns {number}
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*/
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static getAvailableNumberOfCores(parallel) {
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// In some cases cpus() returns undefined
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// https://github.com/nodejs/node/issues/19022
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const cpus = os.cpus() || {
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length: 1
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};
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return parallel === true ? cpus.length - 1 : Math.min(Number(parallel) || 0, cpus.length - 1);
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}
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/**
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* @param {Compiler} compiler
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* @param {Compilation} compilation
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* @param {Record<string, import("webpack").sources.Source>} assets
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* @param {{availableNumberOfCores: number}} optimizeOptions
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* @returns {Promise<void>}
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*/
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async optimize(compiler, compilation, assets, optimizeOptions) {
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const cache = compilation.getCache("TerserWebpackPlugin");
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let numberOfAssetsForMinify = 0;
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const assetsForMinify = await Promise.all(Object.keys(assets).filter(name => {
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const {
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info
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} = compilation.getAsset(name);
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if ( // Skip double minimize assets from child compilation
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info.minimized || // Skip minimizing for extracted comments assets
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info.extractedComments) {
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return false;
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}
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if (!compiler.webpack.ModuleFilenameHelpers.matchObject.bind( // eslint-disable-next-line no-undefined
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undefined, this.options)(name)) {
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return false;
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}
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return true;
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}).map(async name => {
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const {
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info,
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source
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} = compilation.getAsset(name);
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const eTag = cache.getLazyHashedEtag(source);
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const cacheItem = cache.getItemCache(name, eTag);
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const output = await cacheItem.getPromise();
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if (!output) {
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numberOfAssetsForMinify += 1;
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}
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return {
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name,
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info,
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inputSource: source,
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output,
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cacheItem
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};
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}));
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/** @type {undefined | (() => MinifyWorker)} */
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let getWorker;
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/** @type {undefined | MinifyWorker} */
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let initializedWorker;
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/** @type {undefined | number} */
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let numberOfWorkers;
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if (optimizeOptions.availableNumberOfCores > 0) {
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// Do not create unnecessary workers when the number of files is less than the available cores, it saves memory
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numberOfWorkers = Math.min(numberOfAssetsForMinify, optimizeOptions.availableNumberOfCores); // eslint-disable-next-line consistent-return
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getWorker = () => {
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if (initializedWorker) {
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return initializedWorker;
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}
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initializedWorker =
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/** @type {MinifyWorker} */
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new _jestWorker.default(require.resolve("./minify"), {
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numWorkers: numberOfWorkers,
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enableWorkerThreads: true
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}); // https://github.com/facebook/jest/issues/8872#issuecomment-524822081
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const workerStdout = initializedWorker.getStdout();
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if (workerStdout) {
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workerStdout.on("data", chunk => process.stdout.write(chunk));
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}
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const workerStderr = initializedWorker.getStderr();
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if (workerStderr) {
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workerStderr.on("data", chunk => process.stderr.write(chunk));
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}
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return initializedWorker;
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};
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}
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const limit = (0, _pLimit.default)(getWorker && numberOfAssetsForMinify > 0 ?
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/** @type {number} */
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numberOfWorkers : Infinity);
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const {
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SourceMapSource,
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ConcatSource,
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RawSource
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} = compiler.webpack.sources;
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const allExtractedComments = new Map();
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const scheduledTasks = [];
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for (const asset of assetsForMinify) {
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scheduledTasks.push(limit(async () => {
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const {
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name,
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inputSource,
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info,
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cacheItem
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} = asset;
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let {
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output
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} = asset;
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if (!output) {
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let input;
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/** @type {RawSourceMap | undefined} */
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let inputSourceMap;
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const {
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source: sourceFromInputSource,
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map
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} = inputSource.sourceAndMap();
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input = sourceFromInputSource;
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if (map) {
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if (TerserPlugin.isSourceMap(map)) {
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inputSourceMap =
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/** @type {RawSourceMap} */
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map;
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} else {
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inputSourceMap =
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/** @type {RawSourceMap} */
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map;
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compilation.warnings.push(
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/** @type {WebpackError} */
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new Error(`${name} contains invalid source map`));
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}
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}
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if (Buffer.isBuffer(input)) {
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input = input.toString();
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}
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/** @type {InternalMinifyOptions} */
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const options = {
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name,
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input,
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inputSourceMap,
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minify: this.options.minify,
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minifyOptions: { ...this.options.terserOptions
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},
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extractComments: this.options.extractComments
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};
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if (typeof options.minifyOptions.module === "undefined") {
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if (typeof info.javascriptModule !== "undefined") {
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options.minifyOptions.module = info.javascriptModule;
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} else if (/\.mjs(\?.*)?$/i.test(name)) {
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options.minifyOptions.module = true;
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} else if (/\.cjs(\?.*)?$/i.test(name)) {
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options.minifyOptions.module = false;
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}
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}
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try {
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output = await (getWorker ? getWorker().transform((0, _serializeJavascript.default)(options)) : (0, _minify.minify)(options));
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} catch (error) {
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const hasSourceMap = inputSourceMap && TerserPlugin.isSourceMap(inputSourceMap);
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compilation.errors.push(TerserPlugin.buildError(error, name, // eslint-disable-next-line no-undefined
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hasSourceMap ? compilation.requestShortener : undefined, hasSourceMap ? new _sourceMap.SourceMapConsumer(
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/** @type {RawSourceMap} */
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inputSourceMap) : // eslint-disable-next-line no-undefined
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undefined));
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return;
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}
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let shebang;
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if (
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/** @type {ExtractCommentsObject} */
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this.options.extractComments.banner !== false && output.extractedComments && output.extractedComments.length > 0 && output.code.startsWith("#!")) {
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const firstNewlinePosition = output.code.indexOf("\n");
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|
|
shebang = output.code.substring(0, firstNewlinePosition);
|
||
|
|
output.code = output.code.substring(firstNewlinePosition + 1);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (output.map) {
|
||
|
|
output.source = new SourceMapSource(output.code, name, output.map, input,
|
||
|
|
/** @type {RawSourceMap} */
|
||
|
|
inputSourceMap, true);
|
||
|
|
} else {
|
||
|
|
output.source = new RawSource(output.code);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (output.extractedComments && output.extractedComments.length > 0) {
|
||
|
|
const commentsFilename =
|
||
|
|
/** @type {ExtractCommentsObject} */
|
||
|
|
this.options.extractComments.filename || "[file].LICENSE.txt[query]";
|
||
|
|
let query = "";
|
||
|
|
let filename = name;
|
||
|
|
const querySplit = filename.indexOf("?");
|
||
|
|
|
||
|
|
if (querySplit >= 0) {
|
||
|
|
query = filename.substr(querySplit);
|
||
|
|
filename = filename.substr(0, querySplit);
|
||
|
|
}
|
||
|
|
|
||
|
|
const lastSlashIndex = filename.lastIndexOf("/");
|
||
|
|
const basename = lastSlashIndex === -1 ? filename : filename.substr(lastSlashIndex + 1);
|
||
|
|
const data = {
|
||
|
|
filename,
|
||
|
|
basename,
|
||
|
|
query
|
||
|
|
};
|
||
|
|
output.commentsFilename = compilation.getPath(commentsFilename, data);
|
||
|
|
let banner; // Add a banner to the original file
|
||
|
|
|
||
|
|
if (
|
||
|
|
/** @type {ExtractCommentsObject} */
|
||
|
|
this.options.extractComments.banner !== false) {
|
||
|
|
banner =
|
||
|
|
/** @type {ExtractCommentsObject} */
|
||
|
|
this.options.extractComments.banner || `For license information please see ${path.relative(path.dirname(name), output.commentsFilename).replace(/\\/g, "/")}`;
|
||
|
|
|
||
|
|
if (typeof banner === "function") {
|
||
|
|
banner = banner(output.commentsFilename);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (banner) {
|
||
|
|
output.source = new ConcatSource(shebang ? `${shebang}\n` : "", `/*! ${banner} */\n`, output.source);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
const extractedCommentsString = output.extractedComments.sort().join("\n\n");
|
||
|
|
output.extractedCommentsSource = new RawSource(`${extractedCommentsString}\n`);
|
||
|
|
}
|
||
|
|
|
||
|
|
await cacheItem.storePromise({
|
||
|
|
source: output.source,
|
||
|
|
commentsFilename: output.commentsFilename,
|
||
|
|
extractedCommentsSource: output.extractedCommentsSource
|
||
|
|
});
|
||
|
|
}
|
||
|
|
/** @type {AssetInfo} */
|
||
|
|
|
||
|
|
|
||
|
|
const newInfo = {
|
||
|
|
minimized: true
|
||
|
|
};
|
||
|
|
const {
|
||
|
|
source,
|
||
|
|
extractedCommentsSource
|
||
|
|
} = output; // Write extracted comments to commentsFilename
|
||
|
|
|
||
|
|
if (extractedCommentsSource) {
|
||
|
|
const {
|
||
|
|
commentsFilename
|
||
|
|
} = output;
|
||
|
|
newInfo.related = {
|
||
|
|
license: commentsFilename
|
||
|
|
};
|
||
|
|
allExtractedComments.set(name, {
|
||
|
|
extractedCommentsSource,
|
||
|
|
commentsFilename
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
compilation.updateAsset(name, source, newInfo);
|
||
|
|
}));
|
||
|
|
}
|
||
|
|
|
||
|
|
await Promise.all(scheduledTasks);
|
||
|
|
|
||
|
|
if (initializedWorker) {
|
||
|
|
await initializedWorker.end();
|
||
|
|
}
|
||
|
|
|
||
|
|
await Array.from(allExtractedComments).sort().reduce(
|
||
|
|
/**
|
||
|
|
* @param {Promise<any>} previousPromise
|
||
|
|
* @param {any} extractedComments
|
||
|
|
* @returns {Promise<any>}
|
||
|
|
*/
|
||
|
|
async (previousPromise, [from, value]) => {
|
||
|
|
const previous = await previousPromise;
|
||
|
|
const {
|
||
|
|
commentsFilename,
|
||
|
|
extractedCommentsSource
|
||
|
|
} = value;
|
||
|
|
|
||
|
|
if (previous && previous.commentsFilename === commentsFilename) {
|
||
|
|
const {
|
||
|
|
from: previousFrom,
|
||
|
|
source: prevSource
|
||
|
|
} = previous;
|
||
|
|
const mergedName = `${previousFrom}|${from}`;
|
||
|
|
const name = `${commentsFilename}|${mergedName}`;
|
||
|
|
const eTag = [prevSource, extractedCommentsSource].map(item => cache.getLazyHashedEtag(item)).reduce((previousValue, currentValue) => cache.mergeEtags(previousValue, currentValue));
|
||
|
|
let source = await cache.getPromise(name, eTag);
|
||
|
|
|
||
|
|
if (!source) {
|
||
|
|
source = new ConcatSource(Array.from(new Set([...prevSource.source().split("\n\n"), ...extractedCommentsSource.source().split("\n\n")])).join("\n\n"));
|
||
|
|
await cache.storePromise(name, eTag, source);
|
||
|
|
}
|
||
|
|
|
||
|
|
compilation.updateAsset(commentsFilename, source);
|
||
|
|
return {
|
||
|
|
commentsFilename,
|
||
|
|
from: mergedName,
|
||
|
|
source
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
const existingAsset = compilation.getAsset(commentsFilename);
|
||
|
|
|
||
|
|
if (existingAsset) {
|
||
|
|
return {
|
||
|
|
commentsFilename,
|
||
|
|
from: commentsFilename,
|
||
|
|
source: existingAsset.source
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
compilation.emitAsset(commentsFilename, extractedCommentsSource, {
|
||
|
|
extractedComments: true
|
||
|
|
});
|
||
|
|
return {
|
||
|
|
commentsFilename,
|
||
|
|
from,
|
||
|
|
source: extractedCommentsSource
|
||
|
|
};
|
||
|
|
}, Promise.resolve());
|
||
|
|
}
|
||
|
|
/**
|
||
|
|
* @private
|
||
|
|
* @param {any} environment
|
||
|
|
* @returns {TerserECMA}
|
||
|
|
*/
|
||
|
|
|
||
|
|
|
||
|
|
static getEcmaVersion(environment) {
|
||
|
|
// ES 6th
|
||
|
|
if (environment.arrowFunction || environment.const || environment.destructuring || environment.forOf || environment.module) {
|
||
|
|
return 2015;
|
||
|
|
} // ES 11th
|
||
|
|
|
||
|
|
|
||
|
|
if (environment.bigIntLiteral || environment.dynamicImport) {
|
||
|
|
return 2020;
|
||
|
|
}
|
||
|
|
|
||
|
|
return 5;
|
||
|
|
}
|
||
|
|
/**
|
||
|
|
* @param {Compiler} compiler
|
||
|
|
* @returns {void}
|
||
|
|
*/
|
||
|
|
|
||
|
|
|
||
|
|
apply(compiler) {
|
||
|
|
const {
|
||
|
|
output
|
||
|
|
} = compiler.options;
|
||
|
|
|
||
|
|
if (typeof this.options.terserOptions.ecma === "undefined") {
|
||
|
|
this.options.terserOptions.ecma = TerserPlugin.getEcmaVersion(output.environment || {});
|
||
|
|
}
|
||
|
|
|
||
|
|
const pluginName = this.constructor.name;
|
||
|
|
const availableNumberOfCores = TerserPlugin.getAvailableNumberOfCores(this.options.parallel);
|
||
|
|
compiler.hooks.compilation.tap(pluginName, compilation => {
|
||
|
|
const hooks = compiler.webpack.javascript.JavascriptModulesPlugin.getCompilationHooks(compilation);
|
||
|
|
const data = (0, _serializeJavascript.default)({
|
||
|
|
terser: terserPackageJson.version,
|
||
|
|
terserOptions: this.options.terserOptions
|
||
|
|
});
|
||
|
|
hooks.chunkHash.tap(pluginName, (chunk, hash) => {
|
||
|
|
hash.update("TerserPlugin");
|
||
|
|
hash.update(data);
|
||
|
|
});
|
||
|
|
compilation.hooks.processAssets.tapPromise({
|
||
|
|
name: pluginName,
|
||
|
|
stage: compiler.webpack.Compilation.PROCESS_ASSETS_STAGE_OPTIMIZE_SIZE,
|
||
|
|
additionalAssets: true
|
||
|
|
}, assets => this.optimize(compiler, compilation, assets, {
|
||
|
|
availableNumberOfCores
|
||
|
|
}));
|
||
|
|
compilation.hooks.statsPrinter.tap(pluginName, stats => {
|
||
|
|
stats.hooks.print.for("asset.info.minimized").tap("terser-webpack-plugin", (minimized, {
|
||
|
|
green,
|
||
|
|
formatFlag
|
||
|
|
}) => // eslint-disable-next-line no-undefined
|
||
|
|
minimized ? green(formatFlag("minimized")) : undefined);
|
||
|
|
});
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
var _default = TerserPlugin;
|
||
|
|
exports.default = _default;
|