type Callback = () => void;
/**
 * useWillUnmount hook
 * Fires a callback just before component unmounts
 *
 * @param {Function} callback Callback to be called before unmount
 * @see https://rooks.vercel.app/docs/hooks/useWillUnmount
 */
declare function useWillUnmount(callback: Callback): void;
export { useWillUnmount };