webpack.config.js

const path = require('path');
const ClosurePlugin = require('closure-webpack-plugin');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const CopyPlugin = require('copy-webpack-plugin');
const { CleanWebpackPlugin } = require('clean-webpack-plugin');

const stableLibraries = ['react', 'scheduler', 'react-dom', 'recoil', 'styled-components'];
const generalLibraries = ['marked', 'dompurify'];

module.exports = {
  entry: './src/web/index.tsx',
  module: {
    rules: [
      {
        test: /\.tsx?$/,
        use: 'babel-loader',
        exclude: /node_modules/,
      },
      {
        test: /\.svg$/,
        loader: 'url-loader'
      },
      {
        test: /\.(woff|woff2|eot|ttf|otf)$/,
        use: [
          'file-loader',
        ],
      },
    ],
  },
  plugins: [
    new CleanWebpackPlugin(),
    new HtmlWebpackPlugin({
      template: './src/html/index.html',
      inject: true,
    }),
    new CopyPlugin({
      patterns: [
        { from: './src/assets/', to: './assets/' },
      ],
    }),
  ],
  resolve: {
    extensions: [ '.tsx', '.ts', '.js' ],
    alias: {
      'web': path.resolve(process.cwd(), './src/web/'),
    }
  },
  optimization: {
    minimizer: [
      new ClosurePlugin({ mode: 'STANDARD' })
    ],
    splitChunks: {
      chunks: 'all',
      cacheGroups: {
        vendors: {
          name: 'vendors',
          test(module, chunks) {
            return module.resource &&
                  module.resource.includes('node_modules') &&
                  stableLibraries.some(name => module.resource.includes(`/${name}/`));
          }
        },
        libs: {
          name: 'libaries',
          test(module) {
            return module.resource &&
                  module.resource.includes('node_modules') &&
                  generalLibraries.some(name => module.resource.includes(`/${name}/`));
          }
        },
      }
    }
  },
  output: {
    filename: '[name].[contenthash].js',
    path: path.resolve(__dirname, 'dist'),
  },
};