import type EventBusDelegate from '../EventBusDelegate';
export declare class RxJSEventBusDelegate<EventMap extends Record<string, any>> implements EventBusDelegate<EventMap> {
    private subj;
    private subs;
    private emitQueue;
    private pendingOns;
    private readyPromise;
    private resolveReady;
    private rejectReady;
    constructor(sync?: boolean);
    /**
     * Resolves when the RxJS BehaviorSubject exists (async constructor path).
     * Rejects if lazy-loading rxjs fails. In sync mode, resolves immediately.
     */
    whenReady(): Promise<void>;
    private bootstrapSubject;
    private attachFilteredOn;
    init(onInit: () => void): void;
    getInstance(): any;
    emit<K extends keyof EventMap>(type: K, payload: EventMap[K]): void;
    on<K extends keyof EventMap>(type: K, handler: (payload: EventMap[K]) => void): {
        unsubscribe: () => void;
    };
    getValue(): {
        type: string | undefined;
        payload: unknown;
    } | null;
    clear(): void;
}