export interface IntersectionObserverConfig {
    threshold: number;
    onIntersectionChange: (isIntersecting: boolean) => void;
    rootMargin?: string;
}
/**
 * Create an intersection observer with proper fallback for SSR
 */
export declare const setupIntersectionObserver: (element: HTMLElement, config: IntersectionObserverConfig) => IntersectionObserver | null;
/**
 * Create an intersection observer for multiple elements with individual callbacks
 */
export declare const setupMultipleIntersectionObserver: (elements: Array<{
    element: HTMLElement;
    callback: (isIntersecting: boolean) => void;
}>, config: Omit<IntersectionObserverConfig, "onIntersectionChange">) => IntersectionObserver | null;