import { type RefObject } from 'react';
export type PortalManagerItem = {
    key: number;
    ref: RefObject<HTMLElement>;
};
export type PortalManagerItems = Array<PortalManagerItem>;
export type PortalManager = {
    get: () => PortalManagerItems;
    add: (portalItem: PortalManagerItem) => void;
    remove: (portalRef: PortalManagerItem['ref']) => void;
    subscribe: (func: (portalItems: PortalManagerItems) => void) => void;
    unsubscribe: (func: (portalItems: PortalManagerItems) => void) => void;
};
export declare const createPortalManager: () => PortalManager;
export declare const portalManager: PortalManager;
export type UsePortalManager = {
    portals: PortalManagerItems;
} & Pick<PortalManager, 'add' | 'remove'>;
export declare function usePortalManager(): UsePortalManager;