import type { DelayOptions } from "../types";
/**
 * Returns a deferred version of the provided `value` by a given delay `duration`. If the `duration` is `undefined`, immediately returns the actual value.
 * Changes to the `duration` or the delay `options` will cancel the delayed invocation, if any, and call it again with the new parameters.
 *
 * @param value Current value.
 * @param duration The delay at which to update the value.
 * @param options The delay options.
 * @returns The deferred value.
 */
export declare function useDefer<T>(value: T, duration?: number, options?: DelayOptions<T>): T;