common-package/webpack.config.js

Common package

// Imports: Dependencies
const path = require('path')
require('babel-register')

// Webpack Configuration
const config = {
  mode: 'development',

  // Entry
  entry: './app/main.js',
  // Output
  output: {
    path: path.resolve(__dirname, 'build'),
    publicPath: '/build/', // instead of publicPath: '/build/'
    filename: 'bundle.js'
    // libraryTarget: 'commonjs'
  },
  // Loaders
  module: {
    rules: [
      // JavaScript/JSX Files
      {
        test: /\.jsx$/,
        exclude: /node_modules/,
        use: ['babel-loader']
      },
      // CSS Files
      {
        test: /\.css$/,
        use: ['style-loader', 'css-loader']
      }
    ]
  },
  // Plugins
  plugins: []

  // devServer: {
  //   watchOptions: {
  //     ignored: /node_modules/
  //   },
  //   contentBase: path.join(__dirname, "dist"),
  //   compress: false,
  //   port: 9000
  // }
}
// Exports
module.exports = config