import React from "react";
import type { RefObject, SyntheticEvent } from "react";
export declare const VerticalScroll: React.FC<{
    ganttHeight: number;
    ganttFullHeight: number;
    headerHeight: number;
    isChangeInProgress: boolean;
    onScroll: (event: SyntheticEvent<HTMLDivElement>) => void;
    rtl: boolean;
    verticalScrollbarRef: RefObject<HTMLDivElement>;
}>;