text: import React from 'react';
  import ReactDOM from 'react-dom';
  import { BrowserRouter } from "react-router-dom"
  import App from './App';
  import * as serviceWorker from './serviceWorker';
  import {Client, Provider, dedupExchange, fetchExchange } from 'urql';
  import { cacheExchange } from "@urql/exchange-graphcache"
  
  
  const cache = cacheExchange({})
  
  const client=  new Client({
    url: `http://localhost:4000`,
    exchanges: [dedupExchange, cache, fetchExchange]
  
  
  });// end client
  
  ReactDOM.render(
    <React.StrictMode>
      <Provider value= {client}>
      <BrowserRouter>
        <App />
        </BrowserRouter>
      </Provider>
    </React.StrictMode>,
    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();
  