/**
 * Intersection Observer API Polyfill for Testing
 */
export declare class MockIntersectionObserver {
    root: Element | null;
    rootMargin: string;
    thresholds: ReadonlyArray<number>;
    constructor(_callback: IntersectionObserverCallback, _options?: IntersectionObserverInit);
    observe(): void;
    unobserve(): void;
    disconnect(): void;
    takeRecords(): IntersectionObserverEntry[];
}
export declare function setupIntersectionObserver(globalScope?: any): typeof MockIntersectionObserver;
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