import type { ServerResponse } from 'node:http';
import type { FastifyReply } from 'fastify';
export declare function initSSE(reply: FastifyReply, extraHeaders?: Record<string, string | number>): void;
export declare function sendSSE(raw: ServerResponse, data: unknown): void;
export interface EndSSEOptions {
    sentinel?: boolean;
}
export declare function endSSE(raw: ServerResponse, opts?: EndSSEOptions): void;
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