webpack.config.js

module.exports = {
  entry: __dirname + '/client/src/index.jsx', // The entry point for the Application (Where ReactDOM.render is called)
  watch: true,
  module: {
    rules: [
      {
        test: [/\.jsx$/], // Important that webpack compiles our React jsx files too
        exclude: /node_modules/, // Ignoring the node_modules so they are not sent over with our client bundle
        use: {
          loader: 'babel-loader', // Allows Babel and Webpack to work together
          options: {
            presets: ['@babel/preset-react', '@babel/preset-env'] // Environment Presets... Not 100% what these do
          }
        }
      },
      {
        test: /\.css$/,
        use: [
          'style-loader',
          'css-loader'
        ]
      }
    ]
  },
   output: { // IMPORTANT: This is where we set the bundle to be built into a folder
    filename: 'bundle.js', // The name of the file to build
    path: __dirname + '/client/dist' // Where Webpack should place the file
  }
};