webpackfile.js

const webpack = require('webpack')
const path = require('path')

module.exports = [
  build('browser'),
  build('server')
]

function build(env = 'browser') {
  let config = {}

  config.devtool = 'cheap-source-map'
  config.context = path.resolve('app')
  config.entry = ['babel-polyfill', './index.js']
  config.output = {
    path: path.resolve('public'),
    filename: 'app.js'
  }

  config.externals = {
    jquery: 'jQuery'
  }

  config.module = {
    loaders: [
      {
        loader: 'babel-loader',
        test: /\.jsx?/,
        include: path.resolve('app')
      }
    ]
  }

  // for debug
  config.plugins = [
    new webpack.NamedModulesPlugin()
  ]

  if (env === 'server') {
    config.entry = config.entry.slice(1)
    config.output.filename = 'server.js'
    config.output.libraryTarget = 'commonjs2'
    config.target = 'node'
    config.node = false
  }

  return config
}