import { type MaybeRef } from './_shared';
import type { Ref } from '@stacksjs/stx';
/**
 * Reactive element visibility.
 * Uses IntersectionObserver to track whether the target element is visible in the viewport.
 *
 * @param target - The element to observe (or a Ref to one)
 * @returns A ref that is true when the element is visible
 */
export declare function useElementVisibility(target: MaybeRef<HTMLElement | null>): Ref<boolean>;