webpack.config.cjs

const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const ReactRefreshWebpackPlugin = require('@pmmmwh/react-refresh-webpack-plugin');
const ReactRefreshTypeScript = require('react-refresh-typescript');
const ForkTsCheckerWebpackPlugin = require('fork-ts-checker-webpack-plugin');

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

module.exports = {
  mode: prod ? 'production' : 'development',
  entry: {app: './src/index.tsx'},
  devtool: prod ? undefined : 'inline-source-map',
  module: {
    rules: [
      {
        test: /\.tsx?$/,
        use: {
          loader: 'ts-loader',
          options: {
            getCustomTransformers: () => ({
              before: [!prod && ReactRefreshTypeScript()].filter(Boolean),
            }),
            transpileOnly: !prod,
          },
        },
        exclude: /node_modules/,
        resolve: {
          extensions: ['.ts', '.tsx', '.js', '.json'],
        },
      },
      {
        test: /\.css$/i,
        use: [MiniCssExtractPlugin.loader, 'css-loader', 'postcss-loader'],
      },
    ],
  },
  resolve: {
    extensions: ['.tsx', '.ts', '.js'],
  },
  output: {
    filename: 'bundle.js',
    path: path.resolve(__dirname, 'dist'),
  },
  plugins: [
    new HtmlWebpackPlugin({
      template: 'src/index.html',
    }),
    new MiniCssExtractPlugin(),
    !prod && new ForkTsCheckerWebpackPlugin(),
    !prod && new ReactRefreshWebpackPlugin()
  ].filter(Boolean),
  devServer: {
    open: true,
    hot: true
  }
};