export {};
/**
 * 初始化 MQTT 客户端
 * @param options MQTT 连接参数
 */
declare function init(options: any): void;
/**
 * 订阅指定主题
 */
declare function subscribe(topic: string): void;
/**
 * 取消订阅
 */
declare function unsubscribe(topic: string): void;
/**
 * 发布消息
 */
declare function publish(topic: string, payload: string): void;
/**
 * 主动断开连接
 */
declare function disconnect(): void;
export declare const mqttClient: {
    init: typeof init;
    subscribe: typeof subscribe;
    unsubscribe: typeof unsubscribe;
    publish: typeof publish;
    disconnect: typeof disconnect;
};