function useSize()

in packages/hooks/src/useSize/index.ts [9:41]

• 29 lines of code
• 3 McCabe index (conditional complexity)

function useSize(target: BasicTarget): Size | undefined {
  const [state, setState] = useRafState<Size | undefined>(
    () => {
      const el = getTargetElement(target);
      return el ? { width: el.clientWidth, height: el.clientHeight } : undefined
    },
  );

  useIsomorphicLayoutEffectWithTarget(
    () => {
      const el = getTargetElement(target);

      if (!el) {
        return;
      }

      const resizeObserver = new ResizeObserver((entries) => {
        entries.forEach((entry) => {
          const { clientWidth, clientHeight } = entry.target;
          setState({ width: clientWidth, height: clientHeight });
        });
      });
      resizeObserver.observe(el);
      return () => {
        resizeObserver.disconnect();
      };
    },
    [],
    target,
  );

  return state;
}