/**
 * Tracks whether the user has scrolled past a specified threshold.
 *
 * This hook is useful for showing/hiding navigation elements, implementing scroll-to-top
 * buttons, or triggering animations based on scroll position.
 *
 * @example
 * ```tsx
 * // Triggers after scrolling 100px
 * const hasScrolledPastHeader = useIsScrolled(100);
 *
 * // Triggers on any scroll
 * const isScrolled = useIsScrolled(0);
 * ```
 */
export declare const useIsScrolled: (threshold: number) => boolean;