webpack.config.js

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

module.exports = {
  // Basic configuration
  entry: './src/index.tsx',
  mode: 'development',
  // Necessary in order to use source maps and debug directly TypeScript files
  devtool: 'eval-source-map',
  module: {
    rules: [
      // Necessary in order to use TypeScript
      {
        test: /\.tsx?$/,
        use: 'ts-loader',
        exclude: /node_modules/,
      },
      {
        test: /\.s?[ac]ss$/i,
        use: [
          'style-loader',
          'css-loader',
          {
            loader: 'sass-loader',
            options: {
              implementation: require("sass"),
              sassOptions: {
                fiber: false,
              },
            }
          }
        ]
      }
    ],
  },
  resolve: {
    // Alway keep '.js' even though you don't use it.
    // https://github.com/webpack/webpack-dev-server/issues/720#issuecomment-268470989
    extensions: ['.ts', '.tsx', '.js'],
  },
  output: {
    filename: 'bundle.js',
    path: path.resolve(__dirname, 'dist'),
    // This line is VERY important for VS Code debugging to attach properly
    // Tamper with it at your own risks
    devtoolModuleFilenameTemplate: '[absolute-resource-path]',
  },
  plugins: [
    // No need to write a index.html
    new HtmlWebpackPlugin({
      template: 'src/index.html',
      hash: true,
    }),
    // Do not accumulate files in ./dist
    new CleanWebpackPlugin(),
    // Copy assets to serve them
    new CopyPlugin({
      patterns: [{ from: 'assets/c2ints/' }]
    }),
  ],
  devServer: {
    // webpack-dev-server configuration
    // keep port in sync with VS Code launch.json
    port: 3000,
    // Hot-reloading, the sole reason to use webpack here <3
    hot: true,
    compress: true,
    static: ['dist'],
    devMiddleware: {
      index: false,
      mimeTypes: { phtml: 'text/html' },
      publicPath: '/public',
      serverSideRender: true,
      writeToDisk: true,
    },
  },
};