text: "use strict";
  
  Object.defineProperty(exports, "__esModule", {
    value: true
  });
  exports.default = void 0;
  
  var _os = _interopRequireDefault(require("os"));
  
  var _crypto = _interopRequireDefault(require("crypto"));
  
  var _sourceMap = require("source-map");
  
  var _RequestShortener = _interopRequireDefault(require("webpack/lib/RequestShortener"));
  
  var _webpack = _interopRequireWildcard(require("webpack"));
  
  var _schemaUtils = require("schema-utils");
  
  var _serializeJavascript = _interopRequireDefault(require("serialize-javascript"));
  
  var _package = _interopRequireDefault(require("cssnano/package.json"));
  
  var _pLimit = _interopRequireDefault(require("p-limit"));
  
  var _jestWorker = _interopRequireDefault(require("jest-worker"));
  
  var _options = _interopRequireDefault(require("./options.json"));
  
  var _minify = require("./minify");
  
  function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function () { return cache; }; return cache; }
  
  function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
  
  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
  
  const warningRegex = /\s.+:+([0-9]+):+([0-9]+)/; // webpack 5 exposes the sources property to ensure the right version of webpack-sources is used
  
  const {
    SourceMapSource,
    RawSource
  } = // eslint-disable-next-line global-require
  _webpack.default.sources || require('webpack-sources');
  
  class CssMinimizerPlugin {
    constructor(options = {}) {
      (0, _schemaUtils.validate)(_options.default, options, {
        name: 'Css Minimizer Plugin',
        baseDataPath: 'options'
      });
      const {
        minify,
        minimizerOptions = {
          preset: 'default'
        },
        test = /\.css(\?.*)?$/i,
        warningsFilter = () => true,
        sourceMap,
        cache = true,
        cacheKeys = defaultCacheKeys => defaultCacheKeys,
        parallel = true,
        include,
        exclude
      } = options;
      this.options = {
        test,
        warningsFilter,
        sourceMap,
        cache,
        cacheKeys,
        parallel,
        include,
        exclude,
        minify,
        minimizerOptions
      };
    }
  
    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 buildError(error, file, sourceMap, requestShortener) {
      if (error.line) {
        const original = sourceMap && sourceMap.originalPositionFor({
          line: error.line,
          column: error.column
        });
  
        if (original && original.source && requestShortener) {
          return new Error(`${file} from Css Minimizer Webpack Plugin\n${error.message} [${requestShortener.shorten(original.source)}:${original.line},${original.column}][${file}:${error.line},${error.column}]${error.stack ? `\n${error.stack.split('\n').slice(1).join('\n')}` : ''}`);
        }
  
        return new Error(`${file} from Css Minimizer \n${error.message} [${file}:${error.line},${error.column}]${error.stack ? `\n${error.stack.split('\n').slice(1).join('\n')}` : ''}`);
      }
  
      if (error.stack) {
        return new Error(`${file} from Css Minimizer\n${error.stack}`);
      }
  
      return new Error(`${file} from Css Minimizer\n${error.message}`);
    }
  
    static buildWarning(warning, file, sourceMap, requestShortener, warningsFilter) {
      let warningMessage = warning;
      let locationMessage = '';
      let source;
  
      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, file, source)) {
        return null;
      }
  
      return `Css Minimizer Plugin: ${warningMessage} ${locationMessage}`;
    }
  
    static getAvailableNumberOfCores(parallel) {
      // In some cases cpus() returns undefined
      // https://github.com/nodejs/node/issues/19022
      const cpus = _os.default.cpus() || {
        length: 1
      };
      return parallel === true ? cpus.length - 1 : Math.min(Number(parallel) || 0, cpus.length - 1);
    } // eslint-disable-next-line consistent-return
  
  
    static getAsset(compilation, name) {
      // New API
      if (compilation.getAsset) {
        return compilation.getAsset(name);
      }
  
      if (compilation.assets[name]) {
        return {
          name,
          source: compilation.assets[name],
          info: {}
        };
      }
    }
  
    static updateAsset(compilation, name, newSource, assetInfo) {
      // New API
      if (compilation.updateAsset) {
        compilation.updateAsset(name, newSource, assetInfo);
      } // eslint-disable-next-line no-param-reassign
  
  
      compilation.assets[name] = newSource;
    }
  
    async optimize(compiler, compilation, assets, CacheEngine, weakCache) {
      const assetNames = Object.keys(typeof assets === 'undefined' ? compilation.assets : assets).filter(assetName => {
        if (!_webpack.ModuleFilenameHelpers.matchObject.bind( // eslint-disable-next-line no-undefined
        undefined, this.options)(assetName)) {
          return false;
        }
  
        const {
          info
        } = CssMinimizerPlugin.getAsset(compilation, assetName);
  
        if (info.minimized) {
          return false;
        }
  
        return true;
      });
  
      if (assetNames.length === 0) {
        return Promise.resolve();
      }
  
      const availableNumberOfCores = CssMinimizerPlugin.getAvailableNumberOfCores(this.options.parallel);
      let concurrency = Infinity;
      let worker;
  
      if (availableNumberOfCores > 0) {
        // Do not create unnecessary workers when the number of files is less than the available cores, it saves memory
        const numWorkers = Math.min(assetNames.length, availableNumberOfCores);
        concurrency = numWorkers;
        worker = new _jestWorker.default(require.resolve('./minify'), {
          numWorkers
        }); // https://github.com/facebook/jest/issues/8872#issuecomment-524822081
  
        const workerStdout = worker.getStdout();
  
        if (workerStdout) {
          workerStdout.on('data', chunk => process.stdout.write(chunk));
        }
  
        const workerStderr = worker.getStderr();
  
        if (workerStderr) {
          workerStderr.on('data', chunk => process.stderr.write(chunk));
        }
      }
  
      const limit = (0, _pLimit.default)(concurrency);
      const cache = new CacheEngine(compilation, {
        cache: this.options.cache
      }, weakCache);
      const scheduledTasks = [];
  
      for (const name of assetNames) {
        scheduledTasks.push(limit(async () => {
          const {
            source: inputSource,
            info
          } = CssMinimizerPlugin.getAsset(compilation, name); // Skip double minimize assets from child compilation
  
          if (info.minimized) {
            return;
          }
  
          let input;
          let inputSourceMap; // TODO refactor after drop webpack@4, webpack@5 always has `sourceAndMap` on sources
  
          if (this.options.sourceMap && inputSource.sourceAndMap) {
            const {
              source,
              map
            } = inputSource.sourceAndMap();
            input = source;
  
            if (map) {
              if (CssMinimizerPlugin.isSourceMap(map)) {
                inputSourceMap = map;
              } else {
                inputSourceMap = map;
                compilation.warnings.push(new Error(`${name} contains invalid source map`));
              }
            }
          } else {
            input = inputSource.source();
            inputSourceMap = null;
          }
  
          if (Buffer.isBuffer(input)) {
            input = input.toString();
          }
  
          const cacheData = {
            name,
            inputSource
          };
  
          if (CssMinimizerPlugin.isWebpack4()) {
            if (this.options.cache) {
              cacheData.input = input;
              cacheData.inputSourceMap = inputSourceMap;
              cacheData.cacheKeys = this.options.cacheKeys({
                // eslint-disable-next-line global-require
                'css-minimizer-webpack-plugin': require('../package.json').version,
                cssMinimizer: _package.default.version,
                'css-minimizer-webpack-plugin-options': this.options,
                name,
                contentHash: _crypto.default.createHash('md4').update(input).digest('hex')
              }, name);
            }
          }
  
          let output = await cache.get(cacheData, {
            RawSource,
            SourceMapSource
          });
  
          if (!output) {
            try {
              const minimizerOptions = {
                name,
                input,
                inputSourceMap,
                map: this.options.sourceMap,
                minimizerOptions: this.options.minimizerOptions,
                minify: this.options.minify
              };
              output = await (worker ? worker.transform((0, _serializeJavascript.default)(minimizerOptions)) : (0, _minify.minify)(minimizerOptions));
            } catch (error) {
              compilation.errors.push(CssMinimizerPlugin.buildError(error, name, inputSourceMap && CssMinimizerPlugin.isSourceMap(inputSourceMap) ? new _sourceMap.SourceMapConsumer(inputSourceMap) : null, new _RequestShortener.default(compiler.context)));
              return;
            }
  
            if (output.map) {
              output.source = new SourceMapSource(output.code, name, output.map, input, inputSourceMap, true);
            } else {
              output.source = new RawSource(output.code);
            }
  
            await cache.store({ ...output,
              ...cacheData
            });
          }
  
          if (output.warnings && output.warnings.length > 0) {
            output.warnings.forEach(warning => {
              const builtWarning = CssMinimizerPlugin.buildWarning(warning, name, inputSourceMap && CssMinimizerPlugin.isSourceMap(inputSourceMap) ? new _sourceMap.SourceMapConsumer(inputSourceMap) : null, new _RequestShortener.default(compiler.context), this.options.warningsFilter);
  
              if (builtWarning) {
                compilation.warnings.push(builtWarning);
              }
            });
          } // TODO `...` required only for webpack@4
  
  
          const newInfo = { ...info,
            minimized: true
          };
          const {
            source
          } = output;
          CssMinimizerPlugin.updateAsset(compilation, name, source, newInfo);
        }));
      }
  
      const result = await Promise.all(scheduledTasks);
  
      if (worker) {
        await worker.end();
      }
  
      return result;
    }
  
    static isWebpack4() {
      return _webpack.version[0] === '4';
    }
  
    apply(compiler) {
      const pluginName = this.constructor.name;
      const {
        devtool,
        plugins
      } = compiler.options;
      this.options.sourceMap = typeof this.options.sourceMap === 'undefined' ? devtool && !devtool.includes('eval') && !devtool.includes('cheap') && (devtool.includes('source-map') || // Todo remove when `webpack@4` support will be dropped
      devtool.includes('sourcemap')) || plugins && plugins.some(plugin => plugin instanceof _webpack.SourceMapDevToolPlugin && plugin.options && plugin.options.columns) : this.options.sourceMap;
      const weakCache = new WeakMap();
      compiler.hooks.compilation.tap(pluginName, compilation => {
        if (this.options.sourceMap) {
          compilation.hooks.buildModule.tap(pluginName, moduleArg => {
            // to get detailed location info about errors
            // eslint-disable-next-line no-param-reassign
            moduleArg.useSourceMap = true;
          });
        }
  
        if (CssMinimizerPlugin.isWebpack4()) {
          // eslint-disable-next-line global-require
          const CacheEngine = require('./Webpack4Cache').default;
  
          compilation.hooks.optimizeChunkAssets.tapPromise(pluginName, () => this.optimize(compiler, compilation, // eslint-disable-next-line no-undefined
          undefined, CacheEngine, weakCache));
        } else {
          if (this.options.sourceMap) {
            compilation.hooks.buildModule.tap(pluginName, moduleArg => {
              // to get detailed location info about errors
              // eslint-disable-next-line no-param-reassign
              moduleArg.useSourceMap = true;
            });
          } // eslint-disable-next-line global-require
  
  
          const CacheEngine = require('./Webpack5Cache').default; // eslint-disable-next-line global-require
  
  
          const Compilation = require('webpack/lib/Compilation');
  
          compilation.hooks.processAssets.tapPromise({
            name: pluginName,
            stage: Compilation.PROCESS_ASSETS_STAGE_OPTIMIZE_SIZE,
            additionalAssets: true
          }, assets => this.optimize(compiler, compilation, assets, CacheEngine));
          compilation.hooks.statsPrinter.tap(pluginName, stats => {
            stats.hooks.print.for('asset.info.minimized').tap('css-minimizer-webpack-plugin', (minimized, {
              green,
              formatFlag
            }) => // eslint-disable-next-line no-undefined
            minimized ? green(formatFlag('minimized')) : undefined);
          });
        }
      });
    }
  
  }
  
  var _default = CssMinimizerPlugin;
  exports.default = _default;