/**
 * check if the status code is 2xx
 * */
export declare function checkedFetch<T>({ input, init, on2xx, non2xx, }: {
    input: RequestInfo;
    init?: RequestInit;
    on2xx: (response: Response) => T | Promise<T>;
    non2xx: (response: Response) => T | Promise<T>;
}): Promise<T>;