export declare const KEY_SUBSCRIBE_OPTIONS = "__pigeon_subscribe_options";
export declare const KEY_SUBSCRIBER_PARAMS = "__pigeon_subscriber_params";
export declare const LOGGER_KEY = "Pigeon MQTT";
export declare const INSTANCE_BROKER = "INSTANCE_BROKER";
export declare const PIGEON_OPTION_PROVIDER = "PIGEON_OPTION_PROVIDER";
export declare const PIGEON_LOGGER_PROVIDER = "PIGEON_LOGGER_PROVIDER";