export declare const MESSAGE_MAPPING_METADATA = "websockets:message_mapping";
export declare const MESSAGE_METADATA = "message";
export declare const GATEWAY_SERVER_METADATA = "websockets:is_socket";
export declare const GATEWAY_METADATA = "websockets:is_gateway";
export declare const NAMESPACE_METADATA = "namespace";
export declare const PORT_METADATA = "port";
export declare const GATEWAY_OPTIONS = "websockets:gateway_options";
export declare const PARAM_ARGS_METADATA = "__routeArguments__";
export declare const CONNECTION_EVENT = "connection";
export declare const DISCONNECT_EVENT = "disconnect";
export declare const CLOSE_EVENT = "close";
export declare const ERROR_EVENT = "error";