useMutationObserver

See source on Github 

Registers a MutationObserver on ref and executes callback when the observed element is mutated.

• @param ref - A RefObject of the element to observe.
• @param callback - A function to execute when the observed element is mutated.
• @param options - Configurable options
• @returns void

Example

const ref = useRef<HTMLDivElement>(null);
const [isLoading, setIsLoading] = useState(false);
 
useMutationObserver(ref, (record) => {
  setIsLoading(record.attributeName);
}, { attributes: true, attributeFilter: ['data-loading'] });