import { RefObject } from "react";
export type ScrollDirection = "up" | "down" | "none";
/**
 * Listens to scroll event and reports which direction (`'up'` or `'down'`) the user is scrolling,
 * or `'none'` if not scrolled yet.
 * @param options Optional options object, with `threshold` and `elementRef`
 * @returns `'none'` if not scrolled yet, otherwise `'up'` or `'down'`
 */
export default function useScrollDirection<T extends HTMLElement>({ threshold, elementRef, }?: {
    /** Optional amount of pixels scrolled before changing state (default 0) */
    threshold?: number;
    /** Optional DOM node inside a scrollable parent node or the scrollable element itself
     *(used to find target for scroll event listener, defaults to document root element) */
    elementRef?: RefObject<T | null>;
}): ScrollDirection;