psono-admin-client/webpack.prod.js

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

module.exports = merge(common, {
  mode: 'production',
  devtool: 'source-map',
  output: {
    filename: 'static/js/[name].[contenthash:8].js',
    chunkFilename: 'static/js/[name].[contenthash:8].chunk.js',
  },
  optimization: {
    minimize: true,
    minimizer: [
      new TerserPlugin({
        terserOptions: {
          compress: {
            comparisons: false,
          },
          mangle: {
            safari10: true,
          },
          output: {
            comments: false,
            ascii_only: true,
          },
        },
      }),
      new CssMinimizerPlugin(),
    ],
    splitChunks: {
      chunks: 'all',
      name: false,
    },
    runtimeChunk: {
      name: (entrypoint) => `runtime-${entrypoint.name}`,
    },
  },
  plugins: [
    new webpack.DefinePlugin({
      'process.env.NODE_ENV': JSON.stringify('production'),
      'process.env.PUBLIC_URL': JSON.stringify('/portal'),
    }),
    new MiniCssExtractPlugin({
      filename: 'static/css/[name].[contenthash:8].css',
      chunkFilename: 'static/css/[name].[contenthash:8].chunk.css',
    }),
    // Replace HtmlWebpackPlugin to use template processing
    new HtmlWebpackPlugin({
      inject: true,
      template: path.resolve(__dirname, 'public/index.html'),
      templateParameters: {
        PUBLIC_URL: '/portal',
      },
      minify: {
        removeComments: true,
        collapseWhitespace: true,
        removeRedundantAttributes: true,
        useShortDoctype: true,
        removeEmptyAttributes: true,
        removeStyleLinkTypeAttributes: true,
        keepClosingSlash: true,
        minifyJS: true,
        minifyCSS: true,
        minifyURLs: true,
      },
    }),
  ],
  module: {
    rules: [
      {
        test: /\.css$/,
        use: [
          MiniCssExtractPlugin.loader,
          'css-loader',
        ],
      },
    ],
  },
});