import { CompositeDisposable } from './lifecycle';
export declare class Scrollbar extends CompositeDisposable {
    private readonly scrollableElement;
    private readonly _element;
    private readonly _scrollbar;
    private _scrollOffset;
    private _animationTimer;
    private _orientation;
    static MouseWheelSpeed: number;
    get element(): HTMLElement;
    get orientation(): 'horizontal' | 'vertical';
    set orientation(value: 'horizontal' | 'vertical');
    constructor(scrollableElement: HTMLElement);
    private calculateScrollbarStyles;
}