/**
 * Simple wrapper of the standard [Fullscreen API](https://developer.mozilla.org/docs/Web/API/Fullscreen_API)
 *
 * Given an element ref, return something similar to `useState()`
 */
export declare function useFullscreen(elementRef: React.RefObject<HTMLElement | undefined | null>, options?: FullscreenOptions): readonly [boolean, (isFullscreen: boolean) => Promise<void>];