text: import './asyncModules'
  import exclaimify from './exclaimify'
  
  const button = document.getElementById('button')
  
  const alertAsyncMessage = function() {
    // CommonJS async syntax webpack magic
    require.ensure([], function() {
      const message = require("./asyncMessage")
      alert(exclaimify(message))
    })
  }
  
  console.log(`
    asset references like this one:
      images/gulp.png
    get updated in js too!`)
  
  button.addEventListener('click', alertAsyncMessage)
  