webpack.config.js

const path = require('path');

module.exports = {
  entry: './client/index.tsx',
  output: {
    path: path.resolve(__dirname, 'build'),
    filename: 'bundle.js'
  },
  mode: process.env.NODE_ENV,
  devtool: 'source-map',
  module: {
    rules: [
      {
        test: /\.(js|jsx)$/,
        exclude: /node_modules/,
        use: {
          loader: 'babel-loader',
          options: {
            presets: ['@babel/preset-env', '@babel/preset-react']
          }
        }
      },
      {
        test: /.(css|scss)$/,
        exclude: /node_modules/,
        use: ['style-loader', 'css-loader', 'sass-loader']
      },
      {
        test: /\.tsx?$/,
        exclude: /node_modules/,
        loader: 'ts-loader'
      },
      {
        enforce: 'pre',
        test: /\.js$/,
        loader: 'source-map-loader'
      }
    ]
  },
  resolve: {
    extensions: ['.tsx', '.ts', '.js']
  },
  devServer: {
    contentBase: path.join(__dirname, '/client'),
    publicPath: 'http://localhost:8080/build/',
    proxy: {
      '/api': 'http://localhost:3000',
      '/make': 'http://localhost:3000'
    }
  }
};