import { Root } from './type';
export declare class RootEl extends Root {
    el: HTMLElement;
    constructor(el: HTMLElement);
    get top(): number;
    get outerHeight(): number;
    get scrollTop(): number;
    get scrollHeight(): number;
    isScrolledToBottom(): boolean;
    registerScrollEvent(callback: () => void): void;
    unregisterScrollEvent(callback: () => void): void;
    static create(selector: string): RootEl;
}