webpack.config.js

const isDev = process.env.NODE_ENV === 'development'

module.exports = {
  mode: isDev ? 'development' : 'production',
  entry: [
    '@babel/polyfill', // enables async-await
    './client/index.js'
  ],
  output: {
    path: __dirname,
    filename: './public/bundle.js'
  },
  resolve: {
    extensions: ['.js', '.jsx']
  },
  devtool: 'source-map',
  watchOptions: {
    ignored: /node_modules/
  },
  module: {
    // How to process project files with loaders
    rules: [
      {
        test: /\.jsx?$/,
        exclude: /node_modules/,
        loader: 'babel-loader'
      },
      // Process any .js or .jsx file with Babel
      {
        test: /\.css$/,
        loader: 'style-loader!css-loader'
      },
      {
        test: /\.(png|jpg|gif|svg|eot|ttf|woff|woff2)$/,
        loader: 'url-loader',
        options: {
          limit: 10000
        }
      }
    ]
  }
}