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							356 lines
						
					
					
						
							12 KiB
						
					
					
				"use strict"; | 
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 | 
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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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 | 
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var _crypto = _interopRequireDefault(require("crypto")); | 
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 | 
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var _path = _interopRequireDefault(require("path")); | 
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 | 
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var _sourceMap = require("source-map"); | 
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 | 
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var _webpackSources = require("webpack-sources"); | 
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 | 
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var _RequestShortener = _interopRequireDefault(require("webpack/lib/RequestShortener")); | 
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 | 
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var _ModuleFilenameHelpers = _interopRequireDefault(require("webpack/lib/ModuleFilenameHelpers")); | 
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 | 
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var _schemaUtils = _interopRequireDefault(require("schema-utils")); | 
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 | 
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var _serializeJavascript = _interopRequireDefault(require("serialize-javascript")); | 
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 | 
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var _package = _interopRequireDefault(require("terser/package.json")); | 
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 | 
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var _options = _interopRequireDefault(require("./options.json")); | 
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 | 
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var _TaskRunner = _interopRequireDefault(require("./TaskRunner")); | 
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 | 
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } | 
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 | 
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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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 | 
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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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 | 
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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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 | 
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const warningRegex = /\[.+:([0-9]+),([0-9]+)\]/; | 
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 | 
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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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 | 
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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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  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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 | 
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    return new _sourceMap.SourceMapConsumer(inputSourceMap); | 
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  } | 
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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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 | 
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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},${err.col}]`); | 
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      } | 
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 | 
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      return new Error(`${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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 | 
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    return new Error(`${file} from Terser\n${err.message}`); | 
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  } | 
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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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 | 
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    if (sourceMap) { | 
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      const match = warningRegex.exec(warning); | 
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 | 
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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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 | 
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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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 | 
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    if (warningsFilter && !warningsFilter(warning, source)) { | 
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      return null; | 
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    } | 
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 | 
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    return `Terser Plugin: ${warningMessage}${locationMessage}`; | 
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  } | 
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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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 | 
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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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 | 
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        if (processedAssets.has(asset)) { | 
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          return; | 
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        } | 
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 | 
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        try { | 
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          let input; | 
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 | 
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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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 | 
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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(`${file} contains invalid source map`)); | 
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            } | 
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          } else { | 
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            input = asset.source(); | 
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            inputSourceMap = null; | 
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          } // Handling comment extraction | 
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 | 
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 | 
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          let commentsFile = false; | 
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 | 
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          if (this.options.extractComments) { | 
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            commentsFile = this.options.extractComments.filename || `${file}.LICENSE`; | 
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 | 
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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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 | 
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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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 | 
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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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 | 
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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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 | 
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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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 | 
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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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 | 
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 | 
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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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 | 
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          let outputSource; | 
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 | 
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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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 | 
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 | 
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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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 | 
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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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 | 
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                if (typeof banner === 'function') { | 
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                  banner = banner(commentsFile); | 
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                } | 
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 | 
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                if (banner) { | 
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                  outputSource = new _webpackSources.ConcatSource(`/*! ${banner} */\n`, outputSource); | 
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                } | 
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              } | 
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 | 
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              const commentsSource = new _webpackSources.RawSource(`${extractedComments.join('\n\n')}\n`); | 
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 | 
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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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 | 
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 | 
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          processedAssets.add(compilation.assets[file] = outputSource); // Handling warnings | 
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 | 
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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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 | 
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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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 | 
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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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 | 
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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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 | 
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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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 | 
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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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} | 
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 | 
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var _default = TerserPlugin; | 
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exports.default = _default; |