declare class ResponseMessage {
    /**
     * body is not cloneable after fetch@3, it is a readable-stream
     */
    body: ReadableStream | null;
    headers: [string, string][];
    status: number;
    statusText: string;
    constructor(res: Response);
}
declare class ResponseTransformer {
    static toMessage(res: Response | ResponseMessage): ResponseMessage;
    static toResponse(res: Response | ResponseMessage): Response;
}
export { ResponseMessage, ResponseTransformer };