content: import React from 'react';
  import {render} from 'react-dom';
  
  import App from './src/app';
  
  const element = document.getElementById('root');
  
  render(<App />, element);
  
  if (module.hot) {
    module.hot.accept('./src/app', () => {
      const Next = require('./src/app').default;
      render(<Next />, element);
    });
  }
  