export declare const getAttach: (node: any, triggerNode?: any) => Element | HTMLElement;
export declare const getSSRAttach: () => string;
export declare function stopPropagation(event: Event): void;
export declare function preventDefault(event: Event, isStopPropagation?: boolean): void;
export declare function hasClass(el: Element, cls: string): any;
export declare function addClass(el: Element, cls: string): any;
export declare function removeClass(el: Element, cls: string): any;
export declare function elementInViewport(elm: HTMLElement, parent?: HTMLElement): boolean;
export declare function getWindowScroll(): {
    scrollTop: number;
    scrollLeft: number;
};
export declare function getWindowSize(): {
    width: number;
    height: number;
};