/**
 * PubSub namespace — provides a scoped API surface for pub/sub operations.
 *
 * Usage:
 *   client.pubsub.channel('chat').subscribe(cb);
 *   client.pubsub.channel('chat').publish({ text: 'Hello!' });
 *
 * This is a lightweight proxy that delegates to the main WSocket instance.
 */
import type { Channel } from './channel.js';
export { Channel } from './channel.js';
export { Presence } from './presence.js';
/** Namespaced pub/sub API — access via `client.pubsub` */
export declare class PubSubNamespace {
    private channelFn;
    constructor(channelFn: (name: string) => Channel);
    /**
     * Get or create a channel by name.
     *
     * @param name - Channel name
     * @returns The {@link Channel} instance for the given name
     */
    channel(name: string): Channel;
}
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