webpack.config.js

const path = require('path');

module.exports = {
  entry: path.resolve(__dirname, './client/index.js'),
  output: {
    path: path.resolve(__dirname, 'build'),
    publicPath: '/',
    filename: 'bundle.js',
  },
  mode: process.env.NODE_ENV,
  devServer: {
    publicPath: '/build',
    historyApiFallback: true,
    hot: true,
    proxy: {
      '/api': 'http://localhost:3000',
      '/auth': 'http://localhost:3000',
    },
  },
  module: {
    rules: [
      {
        test: /\.jsx?/,
        exclude: /node_modules/,
        use: {
          loader: 'babel-loader',
          options: {
            presets: ['@babel/preset-env', '@babel/preset-react'],
          },
        },
      },
      {
        test: /.(css|scss)$/,
        exclude: /node_modules/,
        use: ['style-loader', 'css-loader', 'sass-loader'],
      },
      {
				test: /\.(png|svg|jpg|gif)$/,
				use: [ 'file-loader', ],
			},
    ],
  },
  resolve: {
    extensions: ['.jsx', '.js', '.tsx', '.ts'],
  },
};