webpack.config.ts

import path from 'path';
import HtmlWebpackPlugin from 'html-webpack-plugin';
import { Configuration as WebpackConfiguration } from 'webpack';
import { Configuration as WebpackDevServerConfiguration } from 'webpack-dev-server';
import ForkTsCheckerWebpackPlugin from 'fork-ts-checker-webpack-plugin';

interface Configuration extends WebpackConfiguration {
  devServer?: WebpackDevServerConfiguration;
}

const config: Configuration = {
  entry: './src/index.tsx',
  module: {
    rules: [
      {
        test: /\.(js|jsx|ts|tsx)$/,
        exclude: /node_modules/,
        use: {
          loader: 'babel-loader',
          options: {
            presets: ['@babel/preset-env', '@babel/preset-react', '@babel/preset-typescript'],
          },
        },
      },
    ],
  },
  resolve: {
    extensions: ['*', '.tsx', '.ts', '.js'],
  },
  output: {
    path: path.resolve(__dirname, 'build'),
    filename: 'bundle.js',
  },
  plugins: [
    new HtmlWebpackPlugin({
      template: 'src/index.html',
    }),
    new ForkTsCheckerWebpackPlugin({
      async: false,
    }),
  ],
  devServer: {
    static: path.join(__dirname, 'build'),
    compress: true,
    port: 4000,
  },
};

export default config;