content: import React from 'react';
  import ReactDOM from 'react-dom';
  import { HashRouter } from 'react-router-dom';
  
  import App from './App';
  import ErrorBoundary from './ErrorBoundary';
  
  ReactDOM.render((
    <HashRouter>
      <ErrorBoundary>
        <App/>
      </ErrorBoundary>
    </HashRouter>
  ), document.getElementById('app'));
  