React v18 doesn't support ReactDOM anymore.

[GustaveRw]

No description provided.

[Mudassir55]

The reason is ReactDOM.render is no longer supported in React 18.

Earlier, react used to render the component in below way

ReactDOM.render(, document.getElementById('root'))
using React 18, we should start using createRoot() instead of render()

Example

ReactDOM.createRoot(document.getElementById('root')).render()
The render() method of the react-dom package is considered legacy starting react-dom version 18.

The method is replaced with the createRoot() method that is exported from react-dom/client.

The createRoot() method takes the root element as a parameter and creates a React root.