webpack.prod.js

const path = require('path');
const { merge } = require('webpack-merge');
const common = require('./webpack.common.js');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const CssMinimizerPlugin = require('css-minimizer-webpack-plugin');
const TerserJSPlugin = require('terser-webpack-plugin');
const DotenvPlugin = require('dotenv-webpack');

module.exports = merge(common('production'), {
  mode: 'production',
  devtool: 'eval-source-map',
  optimization: {
    minimizer: [
      new TerserJSPlugin({}),
      new CssMinimizerPlugin({
        minimizerOptions: {
          preset: ['default', { mergeLonghand: false }]
        },
      }),
    ],
  },
  plugins: [
    new MiniCssExtractPlugin({
      filename: '[name].css',
      chunkFilename: '[name].bundle.css'
    }),
    new DotenvPlugin({
      path: './.env.prod',
    }),
  ],
  output: {
    // filename: '[name].[contenthash].bundle.js',
    // path: path.resolve(__dirname, 'dist'),
    hashFunction: "xxhash64",
  },
  module: {
    rules: [
      {
        test: /\.css$/,
        include: [
          path.resolve(__dirname, 'src'),
          path.resolve(__dirname, 'node_modules/patternfly'),
          path.resolve(__dirname, 'node_modules/@patternfly/patternfly'),
          path.resolve(__dirname, 'node_modules/@patternfly/react-styles/css'),
          path.resolve(__dirname, 'node_modules/@patternfly/react-core/dist/styles/base.css'),
          path.resolve(__dirname, 'node_modules/@patternfly/react-core/dist/esm/@patternfly/patternfly'),
          path.resolve(__dirname, 'node_modules/@patternfly/react-core/node_modules/@patternfly/react-styles/css'),
          path.resolve(__dirname, 'node_modules/@patternfly/react-table/node_modules/@patternfly/react-styles/css'),
          path.resolve(__dirname, 'node_modules/@patternfly/react-inline-edit-extension/node_modules/@patternfly/react-styles/css')
        ],
        use: [MiniCssExtractPlugin.loader, 'css-loader']
      }
    ]
  }
});