import React from 'react'; import ReactDOM from 'react-dom'; import './demo/index.css'; import App from './demo/App'; import * as serviceWorker from './demo/serviceWorker'; export const demo = () => { const container = document.getElementById('root') if (container) { // ReactDOM.render(, document.getElementById('root')); ReactDOM.render(, container); serviceWorker.unregister() } }