/**
 * This hook provides the ability to run Effects with the previous value beoing provided to the Effect.
 *
 * @param   effect  The effect to be run
 * @param   Number  the state that should be cached.
 */
declare function useEffectWithPrevious<T>(effect: (prevVal: T | undefined) => (void | (() => void)), state: T): T | undefined;
export { useEffectWithPrevious };