import { Ctor } from '../utils';
import { SbQueueSubscriptionMetadataOptions, SbSubscriptionMetadataOptions, SbInterceptor, SbTopicMetadataOptions, SbQueueMetadataOptions } from '../interfaces';
import { SbSubscriberMetadata, SbEmitterMetadata } from './metadata';
export declare class MetadataTarget {
    readonly target: Ctor<any>;
    private emitters;
    private subscribers;
    private interceptors;
    constructor(target: Ctor<any>);
    addTopic(metadataArgs: SbTopicMetadataOptions, key: string | symbol): void;
    addQueueEmitter(metadataArgs: SbQueueMetadataOptions, key: string | symbol): void;
    addQueue(metadataArgs: SbQueueSubscriptionMetadataOptions, key: string | symbol, descriptor?: PropertyDescriptor): void;
    addSubscription(metadataArgs: SbSubscriptionMetadataOptions, key: string | symbol, descriptor?: PropertyDescriptor): void;
    addInterceptor(interceptors: Array<SbInterceptor>, key: string | symbol): void;
    getEmitter(key: string | symbol): SbEmitterMetadata<"queue" | "topic">;
    getEmitters(): IterableIterator<[string | symbol, SbEmitterMetadata<"queue" | "topic">]>;
    getSubscription(key: string | symbol): SbSubscriberMetadata<"queue" | "subscription">;
    getSubscriptions(): IterableIterator<[string | symbol, SbSubscriberMetadata<"queue" | "subscription">]>;
    private addSubscriber;
}
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