import { RefObject } from 'react';
/**
 * Takes a ref of a video container and returns true if the aspect ratio is less
 * than 16:9. Can be used to make video iframes behave like `object-fit: cover` does
 * for images.
 *
 * @example
 * ```
 * const containerRef = useRef<HTMLDivElement>(null);
 * const fillHeight = useFillHeight(containerRef);
 *
 * ...
 *
 * <div className="relative overflow-hidden h-[100vh] w-full" ref={containerRef}>
 *   <SectionVideoIframe
 *     // Adjust width and height values as needed
 *     className={`
 *       absolute top-1/2 left-1/2 -translate-x-1/2 -translate-y-1/2
 *       ${fillHeight ? 'h-full w-[178vh]' : 'w-full h-[192vh]'}
 *     `}
 *     autoplay={1}
 *     controls={0}
 *     muted={1}
 *     loop={1}
 *     url={formatVideoUrl(property.virtualTours[0].url)}
 *   />
 * </div>
 * ```
 */
export default function useFillHeight(containerRef: RefObject<HTMLElement | null>): boolean;
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