import { Request, Response, NextFunction } from 'express';
import SseProvider from './SseProvider';
declare global {
    export namespace Express {
        interface Response {
            sse(param?: SseParam): SseProvider;
        }
    }
}
declare type SseParam = {
    statusCode?: number;
    headers?: object;
};
declare const handler: (_: Request, res: Response, next: NextFunction) => void;
export default handler;