useElementSize

See source on Github 

Tracks a ref element size which updates on element resize.

• @param ref - An element reference to measure
• @param options - Configurable options
• @returns An object containing size information

Example

const ref = useRef<HTMLDivElement>(null)
const { clientWidth, clientHeight } = useElementSize(ref)
 
return (
  <div ref={ref}>
    {innerWidth ? `${innerWidth} x ${innerHeight}` : 'Loading...'}
  </div>
)