import type { SseFrame } from "./stream";
export declare const prepareResponseInit: (requestId: string, upstream?: ResponseInit) => ResponseInit;
export declare const mergeResponseInit: (headers: Record<string, string>, responseInit?: ResponseInit) => ResponseInit;
export declare const toResponse: (result: ReadableStream<SseFrame> | Uint8Array<ArrayBuffer> | object | string, responseInit?: ResponseInit, streamOptions?: {
    onDone?: (status: number, reason?: unknown) => void;
    toError?: (error: unknown) => unknown;
}) => Response;