webpack.config.js

const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');

module.exports = {
  mode: 'development',
  entry: './index.tsx',
  output: {
    filename: 'bundle.js',
    path: path.resolve(__dirname, 'build'),
  },
  target: 'web',
  devServer: {
    port: 8080,
    host: 'localhost',
    open: true,
    hot: true,
    liveReload: true,
    proxy: {
      '/': {
        target: 'http://localhost:3000',
      },
    },
  },
  resolve: {
    extensions: ['.js', '.jsx', '.tsx', '.json'],
  },
  plugins: [
    new HtmlWebpackPlugin({
      title: 'Development',
      template: 'index.html',
    }),
  ],
  module: {
    rules: [
      {
        test: /\.(js|jsx)$/,
        exclude: /node_modules/,
        loader: 'babel-loader',
        options: {
          presets: ['@babel/env', '@babel/react'],
        },
      },
      {
        test: /\.tsx?$/,
        exclude: /node_modules/,
        use: {
          loader: 'ts-loader',
          options: {
            transpileOnly: true,
          },
        },
      },
      {
        test: /\.s?css/,
        use: ['style-loader', 'css-loader', 'sass-loader'],
      },
      {
        test: /\.(png|jpe?g|gif)$/i,
        loader: 'url-loader',
        options: {
          limit: 8192,
        },
      },
    ],
  },
};