index.js

import React from 'react';
import ReactDOM from 'react-dom';
import App from './App';
import * as serviceWorker from './serviceWorker';
import { Auth0Provider } from './auth0';

ReactDOM.render(
  <Auth0Provider
    domain={"<your domain>"}
    client_id={"<your client id>"}
    redirect_uri={window.location.origin}
  >
    <App />
  </Auth0Provider>,
  document.getElementById('root')
);

serviceWorker.unregister();