import { T as TopicDataMap, P as PubSub, a as PubSubListener } from './pubsub-VtDb_TZC.js';
import { DisposableSymbols } from '@whatwg-node/disposablestack';
import { MaybePromise } from '@whatwg-node/promise-helpers';

/** In-memory {@link PubSub} implementation. */
declare class MemPubSub<M extends TopicDataMap = TopicDataMap> implements PubSub<M> {
    #private;
    subscribedTopics(): MapIterator<keyof M>;
    publish<Topic extends keyof M>(topic: Topic, data: M[Topic]): void;
    subscribe<Topic extends keyof M>(topic: Topic): AsyncIterable<M[Topic]>;
    subscribe<Topic extends keyof M>(topic: Topic, listener: PubSubListener<M, Topic>): MaybePromise<() => MaybePromise<void>>;
    dispose(): void;
    [DisposableSymbols.asyncDispose](): Promise<void>;
}

export { MemPubSub, PubSub, PubSubListener, TopicDataMap };