export declare class MockIntersectionObserver {
    readonly root: Element | Document | null;
    readonly rootMargin: string;
    readonly thresholds: ReadonlyArray<number>;
    private viewPort;
    private entries;
    private readonly callback;
    constructor(callback: IntersectionObserverCallback, options?: IntersectionObserverInit);
    private intersect;
    isInViewPort(target: HTMLElement): boolean;
    observe(target: HTMLElement): void;
    unobserve(target: HTMLElement): void;
    disconnect(): void;
    takeRecords(): IntersectionObserverEntry[];
}