/**
 * Polyfill for IntersectionObserver
 * Always reports the element as intersecting when it is observed.
 */
export default class AlwaysIntersectingObserver {
    private callback;
    constructor(callback: IntersectionObserverCallback);
    observe(element: Element): void;
    unobserve(element: Element): void;
    /**
     * The following methods are not implemented, but are required by the interface.
     */
    root: Element | null;
    rootMargin: string;
    thresholds: number[];
    disconnect(): void;
    takeRecords(): IntersectionObserverEntry[];
}