@wordpress/compose/src/hooks/use-isomorphic-layout-effect/index.ts

WordPress higher-order components (HOCs).

import { useEffect, useLayoutEffect } from '@wordpress/element';

/**
 * Preferred over direct usage of `useLayoutEffect` when supporting
 * server rendered components (SSR) because currently React
 * throws a warning when using useLayoutEffect in that environment.
 */
const useIsomorphicLayoutEffect =
	typeof window !== 'undefined' ? useLayoutEffect : useEffect;

export default useIsomorphicLayoutEffect;