export declare const MQTT_SUBSCRIBE_OPTIONS = "__mqtt_subscribe_options";
export declare const MQTT_SUBSCRIBER_PARAMS = "__mqtt_subscriber_params";
export declare const MQTT_CLIENT_INSTANCE = "MQTT_CLIENT_INSTANCE";
export declare const MQTT_OPTION_PROVIDER = "MQTT_OPTION_PROVIDER";
export declare const MQTT_LOGGER_PROVIDER = "MQTT_LOGGER_PROVIDER";