Index component that renders React component to DOM

index.js

import React from 'react';
import ReactDOM from 'react-dom';
import './index.css';
import App from './App';
import registerServiceWorker from './registerServiceWorker';
import TryCatch from './TryCatch'

ReactDOM.render(
  /* 
  App component is wrapped inside TryCatch( error boundary component ). Hence any error in the App or children DOM tree,
  error boundary component will handle it, say the DOM tree is something like App->ProductList->ProductItem->Rating, if error
  occurs in Rating and if there are no other error boundaries in the heirarchy, error will bubble upto TryCatch and fallback UI will 
  rendered
  */
  <TryCatch>
    <App/>
  </TryCatch>
  , document.getElementById('root'));
registerServiceWorker();