freeCodeCamp/packages/learn/webpack-frame-runner.js

const path = require('path');

module.exports = (env = {}) => {
  const __DEV__ = env.production !== true;
  return {
    mode: __DEV__ ? 'development' : 'production',
    entry: './src/client/frame-runner.js',
    devtool: __DEV__ ? 'inline-source-map' : 'source-map',
    output: {
      filename: 'frame-runner.js',
      path: path.join(__dirname, './static/js')
    },
    stats: {
      // Display bailout reasons
      optimizationBailout: true
    },
    module: {
      rules: [{
        test: /\.jsx?$/,
        include: [ path.join(__dirname, 'src/client/') ],
        use: {
          loader: 'babel-loader',
          options: {
            babelrc: false,
            presets: [
              [ '@babel/preset-env', { modules: false } ]
            ],
            plugins: [
              '@babel/plugin-transform-runtime'
            ]
          }
        }
      }]
    }
  };
};