// React 18
import {createRoot} from 'react-dom/client';
const container = document.getElementById('root');
const root = createRoot(container);
root.render(<App />);import React from 'react';
import ReactDOM from 'react-dom';
ReactDOM.render(<p>Hello</p>, document.getElementById('root'));// Before
import { render } from 'react-dom';
const container = document.getElementById('app');
render(<App tab="home" />, container);
// After
import { createRoot } from 'react-dom/client';
const container = document.getElementById('app');
const root = createRoot(container); // createRoot(container!) if you use TypeScript
root.render(<App tab="home" />);