hugeheart/webpack.prod.js at master · solid-happiness/hugeheart · GitHub

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// Important modules this config uses
const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const TerserPlugin = require('terser-webpack-plugin');
const CompressionPlugin = require('compression-webpack-plugin');

module.exports = require('./webpack.base')({
  mode: 'production',
  entry: [
    require.resolve('react-app-polyfill/ie11'),
    path.join(process.cwd(), 'client/index.jsx'),
  ],

  output: {
    filename: '[name].[chunkhash].js',
    chunkFilename: '[name].[chunkhash].chunk.js',
  },

  optimization: {
    minimize: true,
    minimizer: [
      new TerserPlugin({
        terserOptions: {
          warnings: false,
          compress: {
            comparisons: false,
          },
          parse: {},
          mangle: true,
          output: {
            comments: false,
            ascii_only: true,
          },
        },
        parallel: true,
        cache: true,
        sourceMap: true,
      }),
    ],
    nodeEnv: 'production',
    sideEffects: true,
    concatenateModules: true,
    splitChunks: {
      chunks: 'all',
      minSize: 30000,
      minChunks: 1,
      maxAsyncRequests: 5,
      maxInitialRequests: 3,
      name: true,
      cacheGroups: {
        commons: {
          test: /[\\/]node_modules[\\/]/,
          name: 'vendor',
          chunks: 'all',
        },
        main: {
          chunks: 'all',
          minChunks: 2,
          reuseExistingChunk: true,
          enforce: true,
        },
      },
    },
    runtimeChunk: true,
  },

  plugins: [
    new HtmlWebpackPlugin({
      template: 'client/index.html',
      minify: {
        removeComments: true,
        collapseWhitespace: true,
        removeRedundantAttributes: true,
        useShortDoctype: true,
        removeEmptyAttributes: true,
        removeStyleLinkTypeAttributes: true,
        keepClosingSlash: true,
        minifyJS: true,
        minifyCSS: true,
        minifyURLs: true,
      },
      inject: true,
    }),

    new CompressionPlugin({
      algorithm: 'gzip',
      test: /\.js$|\.css$|\.html$/,
      threshold: 10240,
      minRatio: 0.8,
    }),
  ],
  performance: {
    assetFilter: assetFilename => !/(\.map$)|(^(main\.|favicon\.))/.test(assetFilename),
  },
});