export declare function getScrollParent(el?: HTMLElement | null): HTMLElement;
export declare function hasScrollbar(el?: Element | null): boolean;
export declare class ScrollBinder {
    onScroll: (e: Event) => void;
    scrollParent: HTMLElement;
    constructor(el: HTMLElement | null, onScroll: (e: Event) => void);
    bindScroll(): void;
    unbindScroll(): void;
}