webpack.config.js

const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const { CleanWebpackPlugin } = require('clean-webpack-plugin');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const Visualizer = require('webpack-visualizer-plugin');
const WorkboxPlugin = require('workbox-webpack-plugin');
const FaviconsWebpackPlugin = require('favicons-webpack-plugin');

const production = process.env.NODE_ENV === 'production';

const productionPlugins = production ? [new WorkboxPlugin.GenerateSW()] : [new Visualizer()];

module.exports = {
  mode: production ? 'production' : 'development',
  entry: {
    app: './src/index.ts',
  },
  devtool: production ? '' : 'inline-source-map',
  devServer: {
    contentBase: './dist',
  },
  plugins: [
    new CleanWebpackPlugin({ cleanStaleWebpackAssets: false }),
    new HtmlWebpackPlugin(),
    new MiniCssExtractPlugin({ filename: '[name].[hash].css' }),
    new FaviconsWebpackPlugin('./src/2048.svg'),
    ...productionPlugins,
  ],
  module: {
    rules: [
      {
        test: /\.ts?$/,
        use: 'ts-loader',
        exclude: /node_modules/,
      },
      {
        test: /\.scss$/,
        use: [
          production ? MiniCssExtractPlugin.loader : 'style-loader',
          'css-loader',
          'sass-loader',
        ],
        exclude: /node_modules/,
      },
    ],
  },
  resolve: {
    extensions: ['.ts', '.js'],
  },
  optimization: {
    splitChunks: { chunks: 'all' },
  },
  output: {
    filename: '[name].[hash].js',
    path: path.resolve(__dirname, 'dist'),
    publicPath: '/',
  },
};