"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 = _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 _webpack = require("webpack");
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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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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, {
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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 = /\.m?js(\?.*)?$/i,
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chunkFilter = () => true,
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warningsFilter = () => true,
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extractComments = true,
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sourceMap,
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cache = true,
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cacheKeys = defaultCacheKeys => defaultCacheKeys,
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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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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
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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(error, file, sourceMap, requestShortener) {
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// Handling error which should have line, col, filename and message
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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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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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} // Todo change order in next major release
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if (warningsFilter && !warningsFilter(warning, source, file)) {
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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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static removeQueryString(filename) {
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let targetFilename = filename;
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const queryStringIdx = targetFilename.indexOf('?');
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if (queryStringIdx >= 0) {
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targetFilename = targetFilename.substr(0, queryStringIdx);
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}
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return targetFilename;
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}
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static hasAsset(commentFilename, assets) {
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const assetFilenames = Object.keys(assets).map(assetFilename => TerserPlugin.removeQueryString(assetFilename));
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return assetFilenames.includes(TerserPlugin.removeQueryString(commentFilename));
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}
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static isWebpack4() {
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return _webpack.version[0] === '4';
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}
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*taskGenerator(compiler, compilation, allExtractedComments, file) {
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let inputSourceMap;
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const asset = compilation.assets[file];
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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 commentsFilename = false;
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if (this.options.extractComments) {
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commentsFilename = this.options.extractComments.filename || '[file].LICENSE.txt[query]';
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if (TerserPlugin.isWebpack4()) {
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// Todo remove this in next major release
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if (typeof commentsFilename === 'function') {
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commentsFilename = commentsFilename.bind(null, file);
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}
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}
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let query = '';
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let filename = file;
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const querySplit = filename.indexOf('?');
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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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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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commentsFilename = compilation.getPath(commentsFilename, data);
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}
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if (commentsFilename && TerserPlugin.hasAsset(commentsFilename, compilation.assets)) {
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// Todo make error and stop uglifing in next major release
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compilation.warnings.push(new Error(`The comment file "${TerserPlugin.removeQueryString(commentsFilename)}" conflicts with an existing asset, this may lead to code corruption, please use a different name`));
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}
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const callback = taskResult => {
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let {
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code
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} = taskResult;
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const {
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error,
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map,
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warnings
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} = taskResult;
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const {
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extractedComments
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} = taskResult;
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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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const hasExtractedComments = commentsFilename && extractedComments && extractedComments.length > 0;
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const hasBannerForExtractedComments = hasExtractedComments && this.options.extractComments.banner !== false;
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let outputSource;
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let shebang;
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if (hasExtractedComments && hasBannerForExtractedComments && code.startsWith('#!')) {
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const firstNewlinePosition = code.indexOf('\n');
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shebang = code.substring(0, firstNewlinePosition);
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code = code.substring(firstNewlinePosition + 1);
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}
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if (map) {
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outputSource = new _webpackSources.SourceMapSource(code, file, 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 commentsFilename
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if (hasExtractedComments) {
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if (!allExtractedComments[commentsFilename]) {
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// eslint-disable-next-line no-param-reassign
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allExtractedComments[commentsFilename] = [];
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} // eslint-disable-next-line no-param-reassign
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allExtractedComments[commentsFilename] = allExtractedComments[commentsFilename].concat(extractedComments); // Add a banner to the original file
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if (hasBannerForExtractedComments) {
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let banner = this.options.extractComments.banner || `For license information please see ${_path.default.relative(_path.default.dirname(file), commentsFilename).replace(/\\/g, '/')}`;
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if (typeof banner === 'function') {
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banner = banner(commentsFilename);
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}
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if (banner) {
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outputSource = new _webpackSources.ConcatSource(shebang ? `${shebang}\n` : '', `/*! ${banner} */\n`, outputSource);
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}
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}
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} // Updating assets
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// eslint-disable-next-line no-param-reassign
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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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const task = {
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asset,
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file,
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input,
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inputSourceMap,
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commentsFilename,
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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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callback
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};
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if (TerserPlugin.isWebpack4()) {
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const {
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outputOptions: {
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hashSalt,
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hashDigest,
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hashDigestLength,
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hashFunction
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}
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} = compilation;
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const hash = _webpack.util.createHash(hashFunction);
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if (hashSalt) {
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hash.update(hashSalt);
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}
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hash.update(input);
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const digest = hash.digest(hashDigest);
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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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// 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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nodeVersion: process.version,
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filename: file,
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contentHash: digest.substr(0, hashDigestLength)
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};
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task.cacheKeys = this.options.cacheKeys(defaultCacheKeys, file);
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}
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} else {
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task.cacheKeys = {
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terser: _package.default.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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};
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}
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yield 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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apply(compiler) {
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const {
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devtool,
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output,
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plugins
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} = compiler.options;
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this.options.sourceMap = typeof this.options.sourceMap === 'undefined' ? devtool && !devtool.includes('eval') && !devtool.includes('cheap') && (devtool.includes('source-map') || // Todo remove when `webpack@5` support will be dropped
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devtool.includes('sourcemap')) || plugins && plugins.some(plugin => plugin instanceof _webpack.SourceMapDevToolPlugin && plugin.options && plugin.options.columns) : Boolean(this.options.sourceMap);
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if (typeof this.options.terserOptions.module === 'undefined' && typeof output.module !== 'undefined') {
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this.options.terserOptions.module = output.module;
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}
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if (typeof this.options.terserOptions.ecma === 'undefined' && typeof output.ecmaVersion !== 'undefined') {
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this.options.terserOptions.ecma = output.ecmaVersion;
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}
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const optimizeFn = async (compilation, chunks) => {
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const matchObject = _webpack.ModuleFilenameHelpers.matchObject.bind( // eslint-disable-next-line no-undefined
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undefined, this.options);
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const files = [].concat(Array.from(compilation.additionalChunkAssets || [])).concat(Array.from(chunks).filter(chunk => this.options.chunkFilter && this.options.chunkFilter(chunk)).reduce((acc, chunk) => acc.concat(Array.from(chunk.files || [])), [])).filter(file => matchObject(file));
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if (files.length === 0) {
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return Promise.resolve();
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}
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const CacheEngine = TerserPlugin.isWebpack4() ? // eslint-disable-next-line global-require
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require('./Webpack4Cache').default : // eslint-disable-next-line global-require
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require('./Webpack5Cache').default;
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const allExtractedComments = {};
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const taskGenerator = this.taskGenerator.bind(this, compiler, compilation, allExtractedComments);
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const taskRunner = new _TaskRunner.default({
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taskGenerator,
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files,
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cache: new CacheEngine(compiler, compilation, this.options),
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parallel: this.options.parallel
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});
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await taskRunner.run();
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await taskRunner.exit();
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Object.keys(allExtractedComments).forEach(commentsFilename => {
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const extractedComments = new Set([...allExtractedComments[commentsFilename].sort()]); // eslint-disable-next-line no-param-reassign
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compilation.assets[commentsFilename] = new _webpackSources.RawSource(`${Array.from(extractedComments).join('\n\n')}\n`);
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});
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return Promise.resolve();
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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, moduleArg => {
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// to get detailed location info about errors
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// eslint-disable-next-line no-param-reassign
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moduleArg.useSourceMap = true;
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});
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}
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if (!TerserPlugin.isWebpack4()) {
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const hooks = _webpack.javascript.JavascriptModulesPlugin.getCompilationHooks(compilation);
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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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hooks.chunkHash.tap(plugin, (chunk, hash) => {
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hash.update('TerserPlugin');
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hash.update(data);
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});
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} else {
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// Todo remove after drop `webpack@4` compatibility
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const {
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mainTemplate,
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chunkTemplate
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} = compilation;
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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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}); // 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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hash.update('TerserPlugin');
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hash.update(data);
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});
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}
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}
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compilation.hooks.optimizeChunkAssets.tapPromise(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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