content: import { AppContainer } from 'react-hot-loader';
  import React from 'react';
  import ReactDOM from 'react-dom';
  import App from './App';
  
  const rootEl = document.getElementById('root');
  const render = Component =>
    ReactDOM.render(
      <AppContainer>
        <Component />
      </AppContainer>,
      rootEl
    );
  
  render(App);
  if (module.hot) module.hot.accept('./App', () => render(App));