import type { ScrollEvent } from '../types.js';
export declare function initScrollDepthOverlay(): void;
export declare function updateScrollDepthOverlay(events: ScrollEvent[]): void;
export declare function showScrollDepthOverlay(events: ScrollEvent[]): void;
export declare function hideScrollDepthOverlay(): void;
export declare function isScrollDepthVisible(): boolean;
export declare function destroyScrollDepthOverlay(): void;