webpack.config.js

const HtmlWebpackPlugin = require('html-webpack-plugin')
const MiniCssExtractPlugin = require('mini-css-extract-plugin')

module.exports = {
  mode: 'development',
  entry: './src/index.tsx',
  plugins: [
    new MiniCssExtractPlugin({
      filename: 'bundle.css'
    }),
    new HtmlWebpackPlugin({
      template: 'src/index.html',
      favicon: './src/favicon.png',
      filename: 'index.html',
      xhtml: true
    })
  ],
  resolve: {
    extensions: ['.tsx', '.ts', '.jsx', '.js']
  },
  module: {
    rules: [{
      test: /\.(js|jsx|ts|tsx)$/,
      exclude: /node_modules/,
      use: 'ts-loader'
    }, {
      test: /\.html$/,
      loader: 'html-loader'
    }, {
      test: /\.css$/,
      use: [
        MiniCssExtractPlugin.loader,
        'css-loader'
      ]
    }]
  },
  output: {
    filename: 'bundle.js'
  },
  externals: {
    react: 'React',
    'react-dom': 'ReactDOM'
  }
}