content: import React from 'react'
  import ReactDOM from 'react-dom'
  import { AppContainer } from 'react-hot-loader'
  import { launch } from '@extjs/reactor';
  import App from './App'
  
  let viewport;
  
  const render = (Component, target) => {
      ReactDOM.render(
          <AppContainer>
              <Component/>
          </AppContainer>,
          target
      )
  }
  
  launch(target => render(App, viewport = target));
  
  if (module.hot) {
      module.hot.accept('./App', () => render(App, viewport));
  }