/**
 * Subscriber manager for the state system
 * Isolates the logic of managing the current subscriber and avoids using global variables
 */
declare class SubscriberManager {
    private _current;
    /**
     * Sets the current subscriber
     * @param subscriber Function to be set as the current subscriber
     */
    setSubscriber(subscriber: ((args?: any) => void | Promise<void>) | null): void;
    /**
     * Gets the current subscriber
     * @returns The current subscriber or null if none exists
     */
    getSubscriber(): ((args?: any) => void | Promise<void>) | null;
    /**
     * Checks if there is an active subscriber
     * @returns true if there is an active subscriber, false otherwise
     */
    hasSubscriber(): boolean;
    /**
     * Clears the current subscriber
     */
    clearSubscriber(): void;
}
export declare const subscriberManager: SubscriberManager;
export {};