import React from 'react';
type Callback = () => void;
type RefOrNode = Ref | HTMLElement;
export declare function useQueueShow(ref: React.RefObject<HTMLElement | null>, delay?: number): void;
export declare function useShowNow(ref: React.RefObject<HTMLElement>, delay?: number): void;
export declare function showRightAway(refOrNode: React.RefObject<HTMLElement | null> | HTMLElement): void;
export declare function hideRightAway(ref: React.RefObject<HTMLElement> | HTMLElement): void;
type Ref = React.RefObject<HTMLElement | null>;
export declare function queueCallback(cb: Callback): void;
export declare function callbackImmediately(cb: Callback): void;
export declare function queueShow(refOrNode: RefOrNode | null, delay?: number, method?: 'push' | 'unshift'): void;
export declare function queueHide(refOrNode: RefOrNode, delay?: number, method?: 'push' | 'unshift'): void;
export declare function stopQueue(): void;
export declare function clearPendingHideAndQueueShow(refOrNode: RefOrNode, delay?: number): void;
export declare function clearPendingShowAndQueueHide(refOrNode: RefOrNode, delay?: number): void;
export {};