import type { Ref } from 'vue';
export interface UseScrollbarThumbOptions {
    railTopInset?: number;
    railBottomInset?: number;
    minThumbHeight?: number;
    thumbHeightFactor?: number;
    onDragStart?: () => void;
    onDragEnd?: () => void;
}
export declare function useScrollbarThumb(containerRef: Ref<HTMLElement | null>, options?: UseScrollbarThumbOptions): {
    thumbHeight: Ref<number, number>;
    thumbOffset: Ref<number, number>;
    isScrollable: import("vue").ComputedRef<boolean>;
    isDragging: Ref<boolean, boolean>;
    update: () => void;
    onThumbMouseDown: (event: MouseEvent) => void;
};
//# sourceMappingURL=scrollbarThumb.d.ts.map