import type { Topic, Subscription } from "../models/index.js";
/** Called by createTopic for namespaced topics. @internal */
export declare function registerTopic(topic: Topic<unknown>): void;
/** Called by Topic.destroy(). @internal */
export declare function unregisterTopic(topic: Topic<unknown>): void;
/** Look up a live registered topic by exact namespace and name. */
export declare function getTopic(namespace: string, name: string): Topic<unknown> | undefined;
/**
 * List live registered topics, optionally filtered by a `*`-wildcard pattern
 * over `${namespace}.${name}` (e.g. `'todos#1.*'`, `'*.actions.*'`).
 */
export declare function listTopics(pattern?: string): Topic<unknown>[];
/**
 * Register a handler for every topic that registers from now on.
 * Returns a Subscription; auto-unsubscribes on component unmount when
 * called inside a component setup.
 */
export declare function onTopicCreated(handler: (topic: Topic<unknown>) => void): Subscription;
/**
 * Subscribe to every registered topic matching a `*`-wildcard pattern —
 * both topics that already exist and topics created later. One Subscription
 * tears everything down.
 */
export declare function subscribeTopics(pattern: string, handler: (data: unknown, meta: {
    namespace: string;
    name: string;
}) => void): Subscription;
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