diff options
Diffstat (limited to 'node_modules/terser-webpack-plugin/dist/index.js')
| -rw-r--r-- | node_modules/terser-webpack-plugin/dist/index.js | 356 |
1 files changed, 356 insertions, 0 deletions
diff --git a/node_modules/terser-webpack-plugin/dist/index.js b/node_modules/terser-webpack-plugin/dist/index.js new file mode 100644 index 0000000..6268f6b --- /dev/null +++ b/node_modules/terser-webpack-plugin/dist/index.js @@ -0,0 +1,356 @@ +"use strict"; + +Object.defineProperty(exports, "__esModule", { + value: true +}); +exports.default = void 0; + +var _crypto = _interopRequireDefault(require("crypto")); + +var _path = _interopRequireDefault(require("path")); + +var _sourceMap = require("source-map"); + +var _webpackSources = require("webpack-sources"); + +var _RequestShortener = _interopRequireDefault(require("webpack/lib/RequestShortener")); + +var _ModuleFilenameHelpers = _interopRequireDefault(require("webpack/lib/ModuleFilenameHelpers")); + +var _schemaUtils = _interopRequireDefault(require("schema-utils")); + +var _serializeJavascript = _interopRequireDefault(require("serialize-javascript")); + +var _package = _interopRequireDefault(require("terser/package.json")); + +var _options = _interopRequireDefault(require("./options.json")); + +var _TaskRunner = _interopRequireDefault(require("./TaskRunner")); + +function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } + +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; } + +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; } + +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; } + +const warningRegex = /\[.+:([0-9]+),([0-9]+)\]/; + +class TerserPlugin { + constructor(options = {}) { + (0, _schemaUtils.default)(_options.default, options, 'Terser Plugin'); + const { + minify, + terserOptions = {}, + test = /\.m?js(\?.*)?$/i, + chunkFilter = () => true, + warningsFilter = () => true, + extractComments = false, + sourceMap = false, + cache = false, + cacheKeys = defaultCacheKeys => defaultCacheKeys, + parallel = false, + include, + exclude + } = options; + this.options = { + test, + chunkFilter, + warningsFilter, + extractComments, + sourceMap, + cache, + cacheKeys, + parallel, + include, + exclude, + minify, + terserOptions: _objectSpread({ + output: { + comments: extractComments ? false : /^\**!|@preserve|@license|@cc_on/i + } + }, terserOptions) + }; + } + + static isSourceMap(input) { + // All required options for `new SourceMapConsumer(...options)` + // https://github.com/mozilla/source-map#new-sourcemapconsumerrawsourcemap + return Boolean(input && input.version && input.sources && Array.isArray(input.sources) && typeof input.mappings === 'string'); + } + + static buildSourceMap(inputSourceMap) { + if (!inputSourceMap || !TerserPlugin.isSourceMap(inputSourceMap)) { + return null; + } + + return new _sourceMap.SourceMapConsumer(inputSourceMap); + } + + static buildError(err, file, sourceMap, requestShortener) { + // Handling error which should have line, col, filename and message + if (err.line) { + const original = sourceMap && sourceMap.originalPositionFor({ + line: err.line, + column: err.col + }); + + if (original && original.source && requestShortener) { + return new Error(`${file} from Terser\n${err.message} [${requestShortener.shorten(original.source)}:${original.line},${original.column}][${file}:${err.line},${err.col}]`); + } + + return new Error(`${file} from Terser\n${err.message} [${file}:${err.line},${err.col}]`); + } else if (err.stack) { + return new Error(`${file} from Terser\n${err.stack}`); + } + + return new Error(`${file} from Terser\n${err.message}`); + } + + static buildWarning(warning, file, sourceMap, requestShortener, warningsFilter) { + let warningMessage = warning; + let locationMessage = ''; + let source = null; + + if (sourceMap) { + const match = warningRegex.exec(warning); + + if (match) { + const line = +match[1]; + const column = +match[2]; + const original = sourceMap.originalPositionFor({ + line, + column + }); + + if (original && original.source && original.source !== file && requestShortener) { + ({ + source + } = original); + warningMessage = `${warningMessage.replace(warningRegex, '')}`; + locationMessage = `[${requestShortener.shorten(original.source)}:${original.line},${original.column}]`; + } + } + } + + if (warningsFilter && !warningsFilter(warning, source)) { + return null; + } + + return `Terser Plugin: ${warningMessage}${locationMessage}`; + } + + apply(compiler) { + const buildModuleFn = moduleArg => { + // to get detailed location info about errors + moduleArg.useSourceMap = true; + }; + + const optimizeFn = (compilation, chunks, callback) => { + const taskRunner = new _TaskRunner.default({ + cache: this.options.cache, + parallel: this.options.parallel + }); + const processedAssets = new WeakSet(); + const tasks = []; + const { + chunkFilter + } = this.options; + 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 => { + let inputSourceMap; + const asset = compilation.assets[file]; + + if (processedAssets.has(asset)) { + return; + } + + try { + let input; + + if (this.options.sourceMap && asset.sourceAndMap) { + const { + source, + map + } = asset.sourceAndMap(); + input = source; + + if (TerserPlugin.isSourceMap(map)) { + inputSourceMap = map; + } else { + inputSourceMap = map; + compilation.warnings.push(new Error(`${file} contains invalid source map`)); + } + } else { + input = asset.source(); + inputSourceMap = null; + } // Handling comment extraction + + + let commentsFile = false; + + if (this.options.extractComments) { + commentsFile = this.options.extractComments.filename || `${file}.LICENSE`; + + if (typeof commentsFile === 'function') { + commentsFile = commentsFile(file); + } + } + + const task = { + file, + input, + inputSourceMap, + commentsFile, + extractComments: this.options.extractComments, + terserOptions: this.options.terserOptions, + minify: this.options.minify + }; + + if (this.options.cache) { + const defaultCacheKeys = { + terser: _package.default.version, + node_version: process.version, + // eslint-disable-next-line global-require + 'terser-webpack-plugin': require('../package.json').version, + 'terser-webpack-plugin-options': this.options, + hash: _crypto.default.createHash('md4').update(input).digest('hex') + }; + task.cacheKeys = this.options.cacheKeys(defaultCacheKeys, file); + } + + tasks.push(task); + } catch (error) { + compilation.errors.push(TerserPlugin.buildError(error, file, TerserPlugin.buildSourceMap(inputSourceMap), new _RequestShortener.default(compiler.context))); + } + }); + taskRunner.run(tasks, (tasksError, results) => { + if (tasksError) { + compilation.errors.push(tasksError); + return; + } + + results.forEach((data, index) => { + const { + file, + input, + inputSourceMap, + commentsFile + } = tasks[index]; + const { + error, + map, + code, + warnings + } = data; + let { + extractedComments + } = data; + let sourceMap = null; + + if (error || warnings && warnings.length > 0) { + sourceMap = TerserPlugin.buildSourceMap(inputSourceMap); + } // Handling results + // Error case: add errors, and go to next file + + + if (error) { + compilation.errors.push(TerserPlugin.buildError(error, file, sourceMap, new _RequestShortener.default(compiler.context))); + return; + } + + let outputSource; + + if (map) { + outputSource = new _webpackSources.SourceMapSource(code, file, JSON.parse(map), input, inputSourceMap, true); + } else { + outputSource = new _webpackSources.RawSource(code); + } // Write extracted comments to commentsFile + + + if (commentsFile && extractedComments && extractedComments.length > 0) { + if (commentsFile in compilation.assets) { + const commentsFileSource = compilation.assets[commentsFile].source(); + extractedComments = extractedComments.filter(comment => !commentsFileSource.includes(comment)); + } + + if (extractedComments.length > 0) { + // Add a banner to the original file + if (this.options.extractComments.banner !== false) { + let banner = this.options.extractComments.banner || `For license information please see ${_path.default.posix.basename(commentsFile)}`; + + if (typeof banner === 'function') { + banner = banner(commentsFile); + } + + if (banner) { + outputSource = new _webpackSources.ConcatSource(`/*! ${banner} */\n`, outputSource); + } + } + + const commentsSource = new _webpackSources.RawSource(`${extractedComments.join('\n\n')}\n`); + + if (commentsFile in compilation.assets) { + // commentsFile already exists, append new comments... + if (compilation.assets[commentsFile] instanceof _webpackSources.ConcatSource) { + compilation.assets[commentsFile].add('\n'); + compilation.assets[commentsFile].add(commentsSource); + } else { + compilation.assets[commentsFile] = new _webpackSources.ConcatSource(compilation.assets[commentsFile], '\n', commentsSource); + } + } else { + compilation.assets[commentsFile] = commentsSource; + } + } + } // Updating assets + + + processedAssets.add(compilation.assets[file] = outputSource); // Handling warnings + + if (warnings && warnings.length > 0) { + warnings.forEach(warning => { + const builtWarning = TerserPlugin.buildWarning(warning, file, sourceMap, new _RequestShortener.default(compiler.context), this.options.warningsFilter); + + if (builtWarning) { + compilation.warnings.push(builtWarning); + } + }); + } + }); + taskRunner.exit(); + callback(); + }); + }; + + const plugin = { + name: this.constructor.name + }; + compiler.hooks.compilation.tap(plugin, compilation => { + if (this.options.sourceMap) { + compilation.hooks.buildModule.tap(plugin, buildModuleFn); + } + + const { + mainTemplate, + chunkTemplate + } = compilation; // Regenerate `contenthash` for minified assets + + for (const template of [mainTemplate, chunkTemplate]) { + template.hooks.hashForChunk.tap(plugin, hash => { + const data = (0, _serializeJavascript.default)({ + terser: _package.default.version, + terserOptions: this.options.terserOptions + }); + hash.update('TerserPlugin'); + hash.update(data); + }); + } + + compilation.hooks.optimizeChunkAssets.tapAsync(plugin, optimizeFn.bind(this, compilation)); + }); + } + +} + +var _default = TerserPlugin; +exports.default = _default;
\ No newline at end of file |