e-commerce-site/src/index.js

import React from 'react';
import ReactDOM from 'react-dom';
import './index.css';
import App from './App';
import { BrowserRouter as Router } from "react-router-dom";
import {ProductProvider} from './context';
import * as serviceWorker from './serviceWorker';
import { ThemeProvider } from './components/context/ThemeContexts';




ReactDOM.render(
   
 <ProductProvider>
     <ThemeProvider>
       <Router>
            <App />
           </Router>
  </ThemeProvider>
 </ProductProvider> ,
     document.getElementById('root'));

// If you want your app to work offline and load faster, you can change
// unregister() to register() below. Note this comes with some pitfalls.
// Learn more about service workers: https://bit.ly/CRA-PWA
serviceWorker.unregister();