/**
 * Registers a callback that fires whenever the document enters or exits fullscreen mode.
 *
 * @param callback - Called with `true` when entering fullscreen, `false` when exiting.
 * @returns A cleanup function that removes the listener.
 *
 * @example
 * const off = onFullscreenChange((isFull) => console.log(isFull))
 * off() // remove listener
 *
 * @since 1.0.0
 */
declare const onFullscreenChange: (callback: (isFull: boolean) => void) => (() => void);
export default onFullscreenChange;