For anyone curious, here's a proof-of-concept of how to implement a <Modal> that manages its own transition out when it's unmounted using just ReactDOM.createPo

For anyone curious, here's a proof-of-concept of how to implement a <Modal> that manages its own transition out when it's unmounted using just ReactDOM.createPortal and React.useLayoutEffect. https://stackblitz.com/edit/react-modal-with-transition-out?devToolsHeight=33&file=src%2FApp.js https://stackblitz.com/edit/react-modal-with-transition-out?...