old_contents: const express = require('express')
  const webpack = require('webpack')
  const webpackDevMiddleware = require('webpack-dev-middleware')
  const webpackHotMiddleware = require('webpack-hot-middleware')
  
  const app = express()
  const config = require('./config/webpack.config.js')
  const compiler = webpack(config)
  
  app.use(webpackDevMiddleware(compiler, {
    noInfo: true,
    publicPath: config.output.publicPath
  }))
  
  app.use(webpackHotMiddleware(compiler))
  
  app.listen(3002, function() {
    console.log('radio app listening on port 3002!\n')
  })
  
new_contents: const express = require('express')
  const webpack = require('webpack')
  const webpackDevMiddleware = require('webpack-dev-middleware')
  const webpackHotMiddleware = require('webpack-hot-middleware')
  
  const app = express()
  const config = require('./config/webpack.common.js')
  const compiler = webpack(config)
  
  app.use(webpackDevMiddleware(compiler, {
    noInfo: true,
    publicPath: config.output.publicPath
  }))
  
  app.use(webpackHotMiddleware(compiler))
  
  app.listen(3002, function() {
    console.log('radio app listening on port 3002!\n')
  })
  
  // "clean": "rm -rf ./lib/*",
  // "cp": "cp -r ./src/imgs ./lib/.",
  // "prepare": "babel src -d lib"
  
subject: modify server