export declare function isWindow(obj: any): boolean; export declare function getScroll(target: HTMLElement | Window | Document | null, top: boolean): number; interface ScrollToOptions { /** Scroll container, default as window */ getContainer?: () => HTMLElement | Window | Document; /** Scroll end callback */ callback?: () => any; /** Animation duration, default as 450 */ duration?: number; } export declare function scrollTo(y: number, options?: ScrollToOptions): void; export {};