MinChunkSizePlugin build slowly

[ganyanchuan]

Bug report

What is the current behavior?
Add MinChunkSizePlugin to compile very slowly。

If the current behavior is a bug, please provide the steps to reproduce.

What is the expected behavior?

The compile time is about the same as if the MinChunkSizePlugin had not been added, or slightly increased, but the difference should not be that great

Other relevant information:
webpack version: 5.65.0
Node.js version: v14.18.1
Operating System: window 10
Additional tools: no

webpack.prod.config.js

const webpack = require("webpack");
const CopyWebpackPlugin = require("copy-webpack-plugin");
const { CleanWebpackPlugin } = require("clean-webpack-plugin");
const ProgressBarPlugin = require("progress-bar-webpack-plugin");

const config = require("./webpack.base.conf");

config.mode = "production";

config.optimization = {
  splitChunks: {
    chunks: "async",
    minSize: 20000,
    minRemainingSize: 0,
    minChunks: 1,
    maxAsyncRequests: 30,
    maxInitialRequests: 30,
    enforceSizeThreshold: 50000,
    cacheGroups: {
      defaultVendors: {
        test: /[\\/]node_modules[\\/]/,
        priority: -10,
        reuseExistingChunk: true,
      },
      default: {
        minChunks: 2,
        priority: -20,
        reuseExistingChunk: true,
      },
    },
  },
};

config.plugins.push(
  new ProgressBarPlugin(),
  new CleanWebpackPlugin(),
  new webpack.optimize.MinChunkSizePlugin({
    minSize: 1000000,
  })
  // new CopyWebpackPlugin({ patterns: [{ from: staticDir, to: dist }] })
);

module.exports = config;

webpack.base.conf.js

const path = require("path");
const webpack = require("webpack");
const os = require("os");
const HtmlWebpackPlugin = require("html-webpack-plugin");
const HappyPack = require("happypack");
const ESLintPlugin = require("eslint-webpack-plugin");

const { src, env, build, dist, PUBLIC_PATH } = require("./config");

var happyThreadPool = HappyPack.ThreadPool({ size: os.cpus().length });

module.exports = {
  entry: {
    app: ["@babel/polyfill", path.join(src, "index.jsx")],
  },
  devtool: "source-map",
  output: {
    path: path.join(dist),
    filename: "js/[name].[chunkhash:6].js",
    chunkFilename: "js/[name].[chunkhash:6].js",
    assetModuleFilename: "imgs/[chunkhash:6][ext][query]",
    publicPath: PUBLIC_PATH,
  },
  resolve: {
    modules: [src, "node_modules"],
    extensions: [".js", ".jsx"],
    alias: {
      "@": src,
    },
  },
  module: {
    rules: [
      {
        test: /\.(js|jsx)$/,
        use: "happypack/loader?id=babel",
        include: src,
        exclude: /node_modules/,
      },
      {
        test: /\.css$/,
        use: [{ loader: "style-loader" }, { loader: "css-loader" }],
      },
      {
        test: /\.less$/,
        include: [/src/],
        use: [
          { loader: "style-loader" },
          {
            loader: "css-loader",
            options: {
              modules: {
                localIdentName: "[name]_[local]_[hash:base64:10]",
              },
            },
          },
          { loader: "postcss-loader" },
          { loader: "less-loader" },
        ],
      },
      {
        test: /\.less$/,
        include: [/node_modules/],
        use: [
          { loader: "style-loader" },
          {
            loader: "css-loader",
            options: {
              importLoaders: 1,
              // modules: true,
              // localIndexName:"[name]__[local]___[hash:base64:5]"
            },
          },
          {
            loader: "less-loader",
            options: { lessOptions: { javascriptEnabled: true } }, // modifyVars: antdTheme
          },
        ],
      },
      {
        test: /\.(png|jpe?g|gif)$/,
        type: "asset",
        parser: {
          dataUrlCondition: {
            maxSize: 10 * 1024, // 10KB 以下使用 base64
          },
        },
      },
      {
        test: /\.(woff2?|eot|ttf|otf)(\?v=[\d\.]+)?$/,
        type: "asset",
        parser: {
          dataUrlCondition: {
            maxSize: 10 * 1024, // 10KB 以下使用 base64
          },
        },
      },
      {
        test: /\.(svg)$/,
        type: "asset/inline",
      },
    ],
  },
  plugins: [
    new ESLintPlugin({ extensions: ["js", "jsx"] }),
    new webpack.DefinePlugin({
      __DEV__: env === "development",
      __PROD__: env === "production",
    }),
    new HappyPack({
      id: "babel", // 上面loader?后面指定的id
      loaders: ["babel-loader?cacheDirectory"], // 实际匹配处理的loader
      // 如何处理.js文件，和rules里的配置相同
      threadPool: happyThreadPool,
      // cache: true // 已被弃用
      verbose: true,
    }),

    new HtmlWebpackPlugin({
      filename: "index.html",
      template: path.resolve(__dirname, "../src/index.html"),
      chunksSortMode: "none",
    }),
    // moment 动态加载locale
    // new webpack.ContextReplacementPlugin(/moment[/\\]locale$/, /zh-cn|en/),
  ],
};