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356 lines
12 KiB
356 lines
12 KiB
"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 _crypto = _interopRequireDefault(require("crypto"));
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var _path = _interopRequireDefault(require("path"));
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var _sourceMap = require("source-map");
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var _webpackSources = require("webpack-sources");
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var _RequestShortener = _interopRequireDefault(require("webpack/lib/RequestShortener"));
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var _ModuleFilenameHelpers = _interopRequireDefault(require("webpack/lib/ModuleFilenameHelpers"));
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var _schemaUtils = _interopRequireDefault(require("schema-utils"));
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var _serializeJavascript = _interopRequireDefault(require("serialize-javascript"));
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var _package = _interopRequireDefault(require("terser/package.json"));
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var _options = _interopRequireDefault(require("./options.json"));
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var _TaskRunner = _interopRequireDefault(require("./TaskRunner"));
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }
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function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(Object(source), true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }
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function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
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const warningRegex = /\[.+:([0-9]+),([0-9]+)\]/;
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class TerserPlugin {
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constructor(options = {}) {
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(0, _schemaUtils.default)(_options.default, options, 'Terser Plugin');
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const {
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minify,
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terserOptions = {},
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test = /\.m?js(\?.*)?$/i,
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chunkFilter = () => true,
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warningsFilter = () => true,
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extractComments = false,
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sourceMap = false,
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cache = false,
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cacheKeys = defaultCacheKeys => defaultCacheKeys,
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parallel = false,
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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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chunkFilter,
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warningsFilter,
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extractComments,
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sourceMap,
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cache,
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cacheKeys,
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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: _objectSpread({
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output: {
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comments: extractComments ? false : /^\**!|@preserve|@license|@cc_on/i
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}
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}, terserOptions)
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};
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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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static buildSourceMap(inputSourceMap) {
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if (!inputSourceMap || !TerserPlugin.isSourceMap(inputSourceMap)) {
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return null;
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}
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return new _sourceMap.SourceMapConsumer(inputSourceMap);
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}
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static buildError(err, file, sourceMap, requestShortener) {
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// Handling error which should have line, col, filename and message
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if (err.line) {
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const original = sourceMap && sourceMap.originalPositionFor({
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line: err.line,
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column: err.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${err.message} [${requestShortener.shorten(original.source)}:${original.line},${original.column}][${file}:${err.line},${err.col}]`);
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}
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return new Error(`${file} from Terser\n${err.message} [${file}:${err.line},${err.col}]`);
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} else if (err.stack) {
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return new Error(`${file} from Terser\n${err.stack}`);
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}
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return new Error(`${file} from Terser\n${err.message}`);
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}
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static buildWarning(warning, file, sourceMap, requestShortener, warningsFilter) {
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let warningMessage = warning;
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let locationMessage = '';
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let source = null;
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if (sourceMap) {
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const match = warningRegex.exec(warning);
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if (match) {
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const line = +match[1];
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const column = +match[2];
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const original = sourceMap.originalPositionFor({
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line,
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column
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});
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if (original && original.source && original.source !== file && requestShortener) {
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({
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source
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} = original);
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warningMessage = `${warningMessage.replace(warningRegex, '')}`;
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locationMessage = `[${requestShortener.shorten(original.source)}:${original.line},${original.column}]`;
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}
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}
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}
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if (warningsFilter && !warningsFilter(warning, source)) {
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return null;
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}
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return `Terser Plugin: ${warningMessage}${locationMessage}`;
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}
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apply(compiler) {
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const buildModuleFn = moduleArg => {
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// to get detailed location info about errors
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moduleArg.useSourceMap = true;
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};
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const optimizeFn = (compilation, chunks, callback) => {
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const taskRunner = new _TaskRunner.default({
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cache: this.options.cache,
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parallel: this.options.parallel
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});
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const processedAssets = new WeakSet();
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const tasks = [];
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const {
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chunkFilter
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} = this.options;
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Array.from(chunks).filter(chunk => chunkFilter && chunkFilter(chunk)).reduce((acc, chunk) => acc.concat(chunk.files || []), []).concat(compilation.additionalChunkAssets || []).filter(_ModuleFilenameHelpers.default.matchObject.bind(null, this.options)).forEach(file => {
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let inputSourceMap;
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const asset = compilation.assets[file];
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if (processedAssets.has(asset)) {
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return;
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}
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try {
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let input;
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if (this.options.sourceMap && asset.sourceAndMap) {
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const {
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source,
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map
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} = asset.sourceAndMap();
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input = source;
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if (TerserPlugin.isSourceMap(map)) {
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inputSourceMap = map;
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} else {
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inputSourceMap = map;
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compilation.warnings.push(new Error(`${file} contains invalid source map`));
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}
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} else {
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input = asset.source();
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inputSourceMap = null;
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} // Handling comment extraction
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let commentsFile = false;
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if (this.options.extractComments) {
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commentsFile = this.options.extractComments.filename || `${file}.LICENSE`;
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if (typeof commentsFile === 'function') {
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commentsFile = commentsFile(file);
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}
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}
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const task = {
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file,
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input,
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inputSourceMap,
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commentsFile,
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extractComments: this.options.extractComments,
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terserOptions: this.options.terserOptions,
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minify: this.options.minify
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};
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if (this.options.cache) {
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const defaultCacheKeys = {
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terser: _package.default.version,
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node_version: process.version,
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// eslint-disable-next-line global-require
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'terser-webpack-plugin': require('../package.json').version,
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'terser-webpack-plugin-options': this.options,
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hash: _crypto.default.createHash('md4').update(input).digest('hex')
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};
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task.cacheKeys = this.options.cacheKeys(defaultCacheKeys, file);
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}
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tasks.push(task);
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} catch (error) {
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compilation.errors.push(TerserPlugin.buildError(error, file, TerserPlugin.buildSourceMap(inputSourceMap), new _RequestShortener.default(compiler.context)));
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}
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});
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taskRunner.run(tasks, (tasksError, results) => {
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if (tasksError) {
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compilation.errors.push(tasksError);
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return;
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}
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results.forEach((data, index) => {
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const {
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file,
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input,
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inputSourceMap,
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commentsFile
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} = tasks[index];
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const {
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error,
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map,
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code,
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warnings
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} = data;
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let {
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extractedComments
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} = data;
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let sourceMap = null;
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if (error || warnings && warnings.length > 0) {
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sourceMap = TerserPlugin.buildSourceMap(inputSourceMap);
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} // Handling results
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// Error case: add errors, and go to next file
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if (error) {
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compilation.errors.push(TerserPlugin.buildError(error, file, sourceMap, new _RequestShortener.default(compiler.context)));
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return;
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}
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let outputSource;
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if (map) {
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outputSource = new _webpackSources.SourceMapSource(code, file, JSON.parse(map), input, inputSourceMap, true);
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} else {
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outputSource = new _webpackSources.RawSource(code);
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} // Write extracted comments to commentsFile
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if (commentsFile && extractedComments && extractedComments.length > 0) {
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if (commentsFile in compilation.assets) {
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const commentsFileSource = compilation.assets[commentsFile].source();
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extractedComments = extractedComments.filter(comment => !commentsFileSource.includes(comment));
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}
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if (extractedComments.length > 0) {
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// Add a banner to the original file
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if (this.options.extractComments.banner !== false) {
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let banner = this.options.extractComments.banner || `For license information please see ${_path.default.posix.basename(commentsFile)}`;
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if (typeof banner === 'function') {
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banner = banner(commentsFile);
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}
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if (banner) {
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outputSource = new _webpackSources.ConcatSource(`/*! ${banner} */\n`, outputSource);
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}
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}
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const commentsSource = new _webpackSources.RawSource(`${extractedComments.join('\n\n')}\n`);
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if (commentsFile in compilation.assets) {
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// commentsFile already exists, append new comments...
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if (compilation.assets[commentsFile] instanceof _webpackSources.ConcatSource) {
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compilation.assets[commentsFile].add('\n');
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compilation.assets[commentsFile].add(commentsSource);
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} else {
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compilation.assets[commentsFile] = new _webpackSources.ConcatSource(compilation.assets[commentsFile], '\n', commentsSource);
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}
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} else {
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compilation.assets[commentsFile] = commentsSource;
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}
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}
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} // Updating assets
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processedAssets.add(compilation.assets[file] = outputSource); // Handling warnings
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if (warnings && warnings.length > 0) {
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warnings.forEach(warning => {
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const builtWarning = TerserPlugin.buildWarning(warning, file, sourceMap, new _RequestShortener.default(compiler.context), this.options.warningsFilter);
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if (builtWarning) {
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compilation.warnings.push(builtWarning);
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}
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});
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}
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});
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taskRunner.exit();
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callback();
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});
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};
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const plugin = {
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name: this.constructor.name
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};
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compiler.hooks.compilation.tap(plugin, compilation => {
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if (this.options.sourceMap) {
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compilation.hooks.buildModule.tap(plugin, buildModuleFn);
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}
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const {
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mainTemplate,
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chunkTemplate
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} = compilation; // Regenerate `contenthash` for minified assets
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for (const template of [mainTemplate, chunkTemplate]) {
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template.hooks.hashForChunk.tap(plugin, hash => {
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const data = (0, _serializeJavascript.default)({
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terser: _package.default.version,
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terserOptions: this.options.terserOptions
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});
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hash.update('TerserPlugin');
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hash.update(data);
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});
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}
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compilation.hooks.optimizeChunkAssets.tapAsync(plugin, optimizeFn.bind(this, compilation));
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});
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}
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}
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var _default = TerserPlugin;
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exports.default = _default;
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