useResizeObserver

API

import useResizeObserver from '@restart/hooks/useResizeObserver'

useResizeObserver<TElement>(element: TElement | null | undefined) => Rect | null
Efficiently observe size changes on an element. Depends on the ResizeObserver api, and polyfills are needed in older browsers.
```
const [ref, attachRef] = useCallbackRef(null);
const rect = useResizeObserver(ref);
return (
 <div ref={attachRef}>
   {JSON.stringify(rect)}
 </div>
)
```
Parameters
- elementTElement | null | undefined
  The DOM element to observe
Return Value Rect | null