webpack.common.js

const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const { CleanWebpackPlugin } = require('clean-webpack-plugin');
const WorkboxPlugin = require('workbox-webpack-plugin');

module.exports = {
  entry: './src/index.ts',
  module: {
    rules: [
      {
        test: /\.ts$/,
        use: 'ts-loader',
        exclude: /node_modules/
      },
      {
        test: /\.worker\.js$/,
        use: { loader: "worker-loader" },
      },
      {
        test: /\.html$/,
        loader: 'html-loader'
      },
      {
        test: /\.css$/,
        use: [
          'style-loader',
          'css-loader'
        ]
      }
    ],
  },
  plugins: [
    new CleanWebpackPlugin(),
    new HtmlWebpackPlugin({
      template: 'src/index.html'
    }),
    new WorkboxPlugin.GenerateSW({
      // these options encourage the ServiceWorkers to get in there fast
      // and not allow any straggling "old" SWs to hang around
      clientsClaim: true,
      skipWaiting: true
    })
  ],
  resolve: {
    extensions: [ '.ts', '.js' ]
  },
  output: {
    filename: '[name].[contenthash].js',
    path: path.resolve(__dirname, 'dist')
  },
  optimization: {
    runtimeChunk: 'single',
    splitChunks: {
      cacheGroups: {
        vendor: {
          test: /[\\/]node_modules[\\/]/,
          name: 'vendors',
          chunks: 'all'
        }
      }
    }
  }
};