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798 lines
23 KiB
798 lines
23 KiB
"use strict"; |
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const path = require("path"); |
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const os = require("os"); |
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const { |
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SourceMapConsumer |
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} = require("source-map"); |
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const { |
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validate |
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} = require("schema-utils"); |
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const serialize = require("serialize-javascript"); |
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const { |
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Worker |
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} = require("jest-worker"); |
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const { |
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throttleAll, |
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terserMinify, |
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uglifyJsMinify, |
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swcMinify, |
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esbuildMinify |
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} = require("./utils"); |
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const schema = require("./options.json"); |
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const { |
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minify |
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} = require("./minify"); |
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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").WebpackError} WebpackError */ |
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/** @typedef {import("webpack").Asset} Asset */ |
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/** @typedef {import("./utils.js").TerserECMA} TerserECMA */ |
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/** @typedef {import("./utils.js").TerserOptions} TerserOptions */ |
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/** @typedef {import("jest-worker").Worker} JestWorker */ |
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/** @typedef {import("source-map").RawSourceMap} RawSourceMap */ |
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/** @typedef {RegExp | string} Rule */ |
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/** @typedef {Rule[] | Rule} Rules */ |
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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 | 'all' | 'some' | 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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* @typedef {ExtractCommentsCondition | ExtractCommentsObject} ExtractCommentsOptions |
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*/ |
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/** |
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* @typedef {Object} MinimizedResult |
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* @property {string} code |
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* @property {RawSourceMap} [map] |
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* @property {Array<Error | string>} [errors] |
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* @property {Array<Error | string>} [warnings] |
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* @property {Array<string>} [extractedComments] |
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*/ |
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/** |
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* @typedef {{ [file: string]: string }} Input |
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*/ |
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/** |
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* @typedef {{ [key: string]: any }} CustomOptions |
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*/ |
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/** |
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* @template T |
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* @typedef {T extends infer U ? U : CustomOptions} InferDefaultType |
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*/ |
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/** |
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* @typedef {Object} PredefinedOptions |
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* @property {boolean} [module] |
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* @property {TerserECMA} [ecma] |
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*/ |
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/** |
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* @template T |
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* @typedef {PredefinedOptions & InferDefaultType<T>} MinimizerOptions |
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*/ |
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/** |
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* @template T |
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* @callback BasicMinimizerImplementation |
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* @param {Input} input |
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* @param {RawSourceMap | undefined} sourceMap |
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* @param {MinimizerOptions<T>} minifyOptions |
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* @param {ExtractCommentsOptions | undefined} extractComments |
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* @returns {Promise<MinimizedResult>} |
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*/ |
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/** |
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* @typedef {object} MinimizeFunctionHelpers |
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* @property {() => string | undefined} [getMinimizerVersion] |
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*/ |
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/** |
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* @template T |
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* @typedef {BasicMinimizerImplementation<T> & MinimizeFunctionHelpers} MinimizerImplementation |
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*/ |
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/** |
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* @template T |
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* @typedef {Object} InternalOptions |
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* @property {string} name |
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* @property {string} input |
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* @property {RawSourceMap | undefined} inputSourceMap |
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* @property {ExtractCommentsOptions | undefined} extractComments |
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* @property {{ implementation: MinimizerImplementation<T>, options: MinimizerOptions<T> }} minimizer |
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*/ |
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/** |
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* @template T |
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* @typedef {JestWorker & { transform: (options: string) => MinimizedResult, minify: (options: InternalOptions<T>) => MinimizedResult }} MinimizerWorker |
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*/ |
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/** |
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* @typedef {undefined | boolean | number} Parallel |
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*/ |
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/** |
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* @typedef {Object} BasePluginOptions |
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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 {ExtractCommentsOptions} [extractComments] |
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* @property {Parallel} [parallel] |
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*/ |
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/** |
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* @template T |
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* @typedef {T extends TerserOptions ? { minify?: MinimizerImplementation<T> | undefined, terserOptions?: MinimizerOptions<T> | undefined } : { minify: MinimizerImplementation<T>, terserOptions?: MinimizerOptions<T> | undefined }} DefinedDefaultMinimizerAndOptions |
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*/ |
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/** |
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* @template T |
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* @typedef {BasePluginOptions & { minimizer: { implementation: MinimizerImplementation<T>, options: MinimizerOptions<T> } }} InternalPluginOptions |
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*/ |
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/** |
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* @template [T=TerserOptions] |
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*/ |
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class TerserPlugin { |
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/** |
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* @param {BasePluginOptions & DefinedDefaultMinimizerAndOptions<T>} [options] |
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*/ |
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constructor(options) { |
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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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}); // TODO make `minimizer` option instead `minify` and `terserOptions` in the next major release, also rename `terserMinify` to `terserMinimize` |
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const { |
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minify = |
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/** @type {MinimizerImplementation<T>} */ |
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terserMinify, |
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terserOptions = |
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/** @type {MinimizerOptions<T>} */ |
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{}, |
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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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/** |
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* @private |
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* @type {InternalPluginOptions<T>} |
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*/ |
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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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minimizer: { |
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implementation: minify, |
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options: terserOptions |
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} |
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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 {unknown} warning |
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* @param {string} file |
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* @returns {Error} |
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*/ |
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static buildWarning(warning, file) { |
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/** |
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* @type {Error & { hideStack: true, file: string }} |
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*/ |
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// @ts-ignore |
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const builtWarning = new Error(warning.toString()); |
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builtWarning.name = "Warning"; |
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builtWarning.hideStack = true; |
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builtWarning.file = file; |
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return builtWarning; |
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} |
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/** |
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* @private |
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* @param {any} error |
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* @param {string} file |
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* @param {SourceMapConsumer} [sourceMap] |
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* @param {Compilation["requestShortener"]} [requestShortener] |
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* @returns {Error} |
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*/ |
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static buildError(error, file, sourceMap, requestShortener) { |
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/** |
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* @type {Error & { file?: string }} |
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*/ |
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let builtError; |
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if (typeof error === "string") { |
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builtError = new Error(`${file} from Terser plugin\n${error}`); |
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builtError.file = file; |
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return builtError; |
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} |
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if (error.line) { |
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const original = sourceMap && sourceMap.originalPositionFor({ |
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line: error.line, |
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column: error.col |
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}); |
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if (original && original.source && requestShortener) { |
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builtError = new Error(`${file} from Terser plugin\n${error.message} [${requestShortener.shorten(original.source)}:${original.line},${original.column}][${file}:${error.line},${error.col}]${error.stack ? `\n${error.stack.split("\n").slice(1).join("\n")}` : ""}`); |
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builtError.file = file; |
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return builtError; |
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} |
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builtError = new Error(`${file} from Terser plugin\n${error.message} [${file}:${error.line},${error.col}]${error.stack ? `\n${error.stack.split("\n").slice(1).join("\n")}` : ""}`); |
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builtError.file = file; |
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return builtError; |
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} |
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if (error.stack) { |
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builtError = new Error(`${file} from Terser plugin\n${typeof error.message !== "undefined" ? error.message : ""}\n${error.stack}`); |
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builtError.file = file; |
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return builtError; |
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} |
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builtError = new Error(`${file} from Terser plugin\n${error.message}`); |
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builtError.file = file; |
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return builtError; |
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} |
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/** |
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* @private |
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* @param {Parallel} 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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* @private |
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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 numberOfAssets = 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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} = |
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/** @type {Asset} */ |
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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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} = |
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/** @type {Asset} */ |
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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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numberOfAssets += 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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if (assetsForMinify.length === 0) { |
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return; |
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} |
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/** @type {undefined | (() => MinimizerWorker<T>)} */ |
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let getWorker; |
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/** @type {undefined | MinimizerWorker<T>} */ |
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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(numberOfAssets, 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 {MinimizerWorker<T>} */ |
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new Worker(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 { |
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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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/** @typedef {{ extractedCommentsSource : import("webpack").sources.RawSource, commentsFilename: string }} ExtractedCommentsInfo */ |
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/** @type {Map<string, ExtractedCommentsInfo>} */ |
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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(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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compilation.warnings.push( |
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/** @type {WebpackError} */ |
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new Error(`${name} contains invalid source 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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} |
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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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/** |
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* @type {InternalOptions<T>} |
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*/ |
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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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minimizer: { |
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implementation: this.options.minimizer.implementation, |
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// @ts-ignore https://github.com/Microsoft/TypeScript/issues/10727 |
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options: { ...this.options.minimizer.options |
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} |
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}, |
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extractComments: this.options.extractComments |
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}; |
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if (typeof options.minimizer.options.module === "undefined") { |
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if (typeof info.javascriptModule !== "undefined") { |
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options.minimizer.options.module = info.javascriptModule; |
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} else if (/\.mjs(\?.*)?$/i.test(name)) { |
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options.minimizer.options.module = true; |
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} else if (/\.cjs(\?.*)?$/i.test(name)) { |
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options.minimizer.options.module = false; |
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} |
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} |
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if (typeof options.minimizer.options.ecma === "undefined") { |
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options.minimizer.options.ecma = TerserPlugin.getEcmaVersion(compiler.options.output.environment || {}); |
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} |
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try { |
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output = await (getWorker ? getWorker().transform(serialize(options)) : 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( |
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/** @type {WebpackError} */ |
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TerserPlugin.buildError(error, name, hasSourceMap ? new SourceMapConsumer( |
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/** @type {RawSourceMap} */ |
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inputSourceMap) : // eslint-disable-next-line no-undefined |
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undefined, // eslint-disable-next-line no-undefined |
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hasSourceMap ? compilation.requestShortener : undefined)); |
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return; |
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} |
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if (typeof output.code === "undefined") { |
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compilation.errors.push( |
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/** @type {WebpackError} */ |
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new Error(`${name} from Terser plugin\nMinimizer doesn't return result`)); |
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return; |
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} |
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if (output.warnings && output.warnings.length > 0) { |
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output.warnings = output.warnings.map( |
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/** |
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* @param {Error | string} item |
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*/ |
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item => TerserPlugin.buildWarning(item, name)); |
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} |
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if (output.errors && output.errors.length > 0) { |
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const hasSourceMap = inputSourceMap && TerserPlugin.isSourceMap(inputSourceMap); |
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output.errors = output.errors.map( |
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/** |
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* @param {Error | string} item |
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*/ |
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item => TerserPlugin.buildError(item, name, hasSourceMap ? new SourceMapConsumer( |
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/** @type {RawSourceMap} */ |
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inputSourceMap) : // eslint-disable-next-line no-undefined |
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undefined, // eslint-disable-next-line no-undefined |
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hasSourceMap ? compilation.requestShortener : undefined)); |
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} |
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let shebang; |
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|
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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); |
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output.code = output.code.substring(firstNewlinePosition + 1); |
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} |
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|
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if (output.map) { |
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output.source = new SourceMapSource(output.code, name, output.map, input, |
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/** @type {RawSourceMap} */ |
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inputSourceMap, true); |
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} else { |
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output.source = new RawSource(output.code); |
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} |
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|
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if (output.extractedComments && output.extractedComments.length > 0) { |
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const commentsFilename = |
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/** @type {ExtractCommentsObject} */ |
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this.options.extractComments.filename || "[file].LICENSE.txt[query]"; |
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let query = ""; |
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let filename = name; |
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const querySplit = filename.indexOf("?"); |
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|
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if (querySplit >= 0) { |
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query = filename.substr(querySplit); |
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filename = filename.substr(0, querySplit); |
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} |
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|
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const lastSlashIndex = filename.lastIndexOf("/"); |
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const basename = lastSlashIndex === -1 ? filename : filename.substr(lastSlashIndex + 1); |
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const data = { |
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filename, |
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basename, |
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query |
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}; |
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output.commentsFilename = compilation.getPath(commentsFilename, data); |
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let banner; // Add a banner to the original file |
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|
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if ( |
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/** @type {ExtractCommentsObject} */ |
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this.options.extractComments.banner !== false) { |
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banner = |
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/** @type {ExtractCommentsObject} */ |
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this.options.extractComments.banner || `For license information please see ${path.relative(path.dirname(name), output.commentsFilename).replace(/\\/g, "/")}`; |
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|
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if (typeof banner === "function") { |
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banner = banner(output.commentsFilename); |
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} |
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|
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if (banner) { |
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output.source = new ConcatSource(shebang ? `${shebang}\n` : "", `/*! ${banner} */\n`, output.source); |
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} |
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} |
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|
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const extractedCommentsString = output.extractedComments.sort().join("\n\n"); |
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output.extractedCommentsSource = new RawSource(`${extractedCommentsString}\n`); |
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} |
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|
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await cacheItem.storePromise({ |
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source: output.source, |
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errors: output.errors, |
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warnings: output.warnings, |
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commentsFilename: output.commentsFilename, |
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extractedCommentsSource: output.extractedCommentsSource |
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}); |
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} |
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|
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if (output.warnings && output.warnings.length > 0) { |
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for (const warning of output.warnings) { |
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compilation.warnings.push( |
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/** @type {WebpackError} */ |
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warning); |
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} |
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} |
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|
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if (output.errors && output.errors.length > 0) { |
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for (const error of output.errors) { |
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compilation.errors.push( |
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/** @type {WebpackError} */ |
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error); |
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} |
|
} |
|
/** @type {Record<string, any>} */ |
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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); |
|
}); |
|
} |
|
|
|
const limit = getWorker && numberOfAssets > 0 ? |
|
/** @type {number} */ |
|
numberOfWorkers : scheduledTasks.length; |
|
await throttleAll(limit, scheduledTasks); |
|
|
|
if (initializedWorker) { |
|
await initializedWorker.end(); |
|
} |
|
/** @typedef {{ source: import("webpack").sources.Source, commentsFilename: string, from: string }} ExtractedCommentsInfoWIthFrom */ |
|
|
|
|
|
await Array.from(allExtractedComments).sort().reduce( |
|
/** |
|
* @param {Promise<unknown>} previousPromise |
|
* @param {[string, ExtractedCommentsInfo]} extractedComments |
|
* @returns {Promise<ExtractedCommentsInfoWIthFrom>} |
|
*/ |
|
async (previousPromise, [from, value]) => { |
|
const previous = |
|
/** @type {ExtractedCommentsInfoWIthFrom | undefined} **/ |
|
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([... |
|
/** @type {string}*/ |
|
prevSource.source().split("\n\n"), ... |
|
/** @type {string}*/ |
|
extractedCommentsSource.source().split("\n\n")])).join("\n\n")); |
|
await cache.storePromise(name, eTag, source); |
|
} |
|
|
|
compilation.updateAsset(commentsFilename, source); |
|
return { |
|
source, |
|
commentsFilename, |
|
from: mergedName |
|
}; |
|
} |
|
|
|
const existingAsset = compilation.getAsset(commentsFilename); |
|
|
|
if (existingAsset) { |
|
return { |
|
source: existingAsset.source, |
|
commentsFilename, |
|
from: commentsFilename |
|
}; |
|
} |
|
|
|
compilation.emitAsset(commentsFilename, extractedCommentsSource, { |
|
extractedComments: true |
|
}); |
|
return { |
|
source: extractedCommentsSource, |
|
commentsFilename, |
|
from |
|
}; |
|
}, |
|
/** @type {Promise<unknown>} */ |
|
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 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 = serialize({ |
|
minimizer: typeof this.options.minimizer.implementation.getMinimizerVersion !== "undefined" ? this.options.minimizer.implementation.getMinimizerVersion() || "0.0.0" : "0.0.0", |
|
options: this.options.minimizer.options |
|
}); |
|
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 |
|
}) => minimized ? |
|
/** @type {Function} */ |
|
green( |
|
/** @type {Function} */ |
|
formatFlag("minimized")) : ""); |
|
}); |
|
}); |
|
} |
|
|
|
} |
|
|
|
TerserPlugin.terserMinify = terserMinify; |
|
TerserPlugin.uglifyJsMinify = uglifyJsMinify; |
|
TerserPlugin.swcMinify = swcMinify; |
|
TerserPlugin.esbuildMinify = esbuildMinify; |
|
module.exports = TerserPlugin; |