export { buildHandshakeFrame, parseHandshakeFrame, parseTokenFrame, REALTIME_CAP_NO_AWARENESS, REALTIME_PROTOCOL_VERSION, REALTIME_SSE_HANDSHAKE_EVENT, REALTIME_SSE_TOKEN_EVENT, type RealtimeHandshake, type RealtimeTokenFrame, } from "../realtime-protocol.js";
interface EventLike {
    on(event: string, listener: (...args: any[]) => void): any;
    off(event: string, listener: (...args: any[]) => void): any;
}
export interface SSEHandlerOptions {
    extraEmitters?: Array<{
        emitter: EventLike;
        event: string;
    }>;
}
export declare function createSSEHandler(options?: SSEHandlerOptions): import("h3").EventHandlerWithFetch<import("h3").EventHandlerRequest, Promise<BodyInit>>;