import "reflect-metadata";
export declare const EVENT_SOURCE_OPTION_KEY: unique symbol;
import { SseOptions } from "../typings";
/**
 * 将装饰的方法创建为SSE连接
 * @param path 路径，要连接到服务端sse端点路径
 * @param options 配置选项
 * @returns 调用被装饰的方法可获得返回{close,eventSource}
 */
export declare const Sse: (path?: string, options?: SseOptions) => (target: object) => void;
export declare const EVENT_SOURCE_EVENTS_KEY: unique symbol;
/**
 * 将装饰的方法注册为eventSource的对应事件
 * @param eventName 事件名称，可选，默认处理message事件
 * @param options boolean | AddEventListenerOptions 可选，注册事件选项
 * @returns
 */
export declare const SseEvent: (eventName?: string, options?: boolean | AddEventListenerOptions) => (target: any, propertyKey: string) => void;
export declare const EVENT_SOURCE_OPEN_KEY: unique symbol;
/**
 * 将装饰的方法注册为eventSource.onOpen
 * @returns
 */
export declare const OnSseOpen: () => (target: any, propertyKey: string) => void;
export declare const EVENT_SOURCE_ERROR_KEY: unique symbol;
/**
 * 将装饰的方法注册eventSource.onError
 * @returns
 */
export declare const OnSseError: () => (target: any, propertyKey: string) => void;