import { ReactNode, useRef } from 'react'; import useIsomorphicLayoutEffect from '../useIsomorphicLayoutEffect'; function ItemResizeObserverWrapper({ resizeObserver, idx, children, }: { resizeObserver: ResizeObserver | undefined; idx: number; children: ReactNode; }) { const ref = useRef(null); useIsomorphicLayoutEffect(() => { const el = ref.current; if (resizeObserver && el) { resizeObserver.observe(el); } return () => { if (resizeObserver && el) { resizeObserver.unobserve(el); } }; }, [resizeObserver]); return (