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

interface NATSPubSubOptions {
    /**
     * Prefix for NATS publish subhects to avoid conflicts.
     * Intentionally no default because we don't want to accidentally share channels between different services.
     */
    subjectPrefix: string;
    /**
     * By default, when the pub/sub instance is disposed, it will call
     * `close` on the NATS connection. Set this to `true` if you
     * want to keep the connection alive after disposal.
     *
     * This might be useful if you want to manage the NATS connection's lifecycle
     * outside of the pub/sub instance.
     *
     * @default false
     */
    noCloseOnDispose?: boolean;
}
/** {@link PubSub Hive PubSub} implementation of the [NATS message broker](https://nats.io/). */
declare class NATSPubSub<M extends TopicDataMap = TopicDataMap> implements PubSub<M> {
    #private;
    constructor(nats: NatsConnection, options: NATSPubSubOptions);
    subscribedTopics(): Promise<(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(): Promise<void>;
    [DisposableSymbols.asyncDispose](): Promise<void>;
}

export { NATSPubSub, type NATSPubSubOptions };