import { MutableRefObject } from 'react';
/**
 * The useIsVisibleElement function is a React hook that returns whether an element is visible in the viewport.
 * @example const isInViewPort = useIsVisibleElement(ref)
 *
 * @param element MutableRefObject<Element | null | undefined; Pass the ref of the element we want to observe
 * @param rootMargin Adjust the root element
 *
 * @return A boolean value that indicates if the element is visible
 *
 */
export declare const useIsVisibleElement: (element: MutableRefObject<Element | null | undefined>, rootMargin?: number) => boolean;