import type { RosbridgeClient } from "./client.js";
import type { MessageHandler } from "./types.js";
/**
 * Helper for publishing messages to a ROS2 topic.
 */
export declare class TopicPublisher {
    private client;
    private topic;
    private type;
    constructor(client: RosbridgeClient, topic: string, type: string);
    /** Publish a message to the topic. */
    publish(msg: Record<string, unknown>): void;
}
/**
 * Helper for subscribing to messages from a ROS2 topic.
 */
export declare class TopicSubscriber {
    private client;
    private topic;
    private type?;
    private unsubscribeFromClient;
    constructor(client: RosbridgeClient, topic: string, type?: string | undefined);
    /** Subscribe to the topic and receive messages via the handler. */
    subscribe(handler: MessageHandler): void;
    /** Unsubscribe from the topic. */
    unsubscribe(): void;
}
//# sourceMappingURL=topics.d.ts.map