import type { ServerSentEvent } from "@gajae-code/utils";
import type { RawSseEvent } from "../types";
type FetchFunction = (input: string | URL | Request, init?: RequestInit) => Promise<Response>;
type FetchWithPreconnect = FetchFunction & {
    preconnect?: typeof fetch.preconnect;
};
type RawSseObserver = (event: RawSseEvent) => void;
export declare function notifyRawSseEvent(observer: RawSseObserver | undefined, event: ServerSentEvent | RawSseEvent): void;
export declare function wrapFetchForSseDebug(fetchImpl: FetchWithPreconnect, observer: RawSseObserver | undefined): FetchWithPreconnect;
export {};