/**
 * check if the status code is 2xx
 * */
export declare function checkedFetch<T>({ input, init, on2xx, non2xx, }: {
    input: RequestInfo | URL;
    init?: RequestInit;
    on2xx: (response: Response) => T | Promise<T>;
    non2xx: (response: Response) => T | Promise<T>;
}): Promise<T>;
export declare function parseRetryAfter(retryAfter: string | null): number | null;
export type FetchWithRetryOptions = {
    maxRetryCount?: number;
    defaultRetryAfterInterval?: number;
};
export declare const fetch_retry_status_codes: number[];
export declare function fetch_with_retry(input: RequestInfo | URL, init?: RequestInit, options?: FetchWithRetryOptions): Promise<Response>;
export declare function fetch_json(input: RequestInfo | URL, init?: RequestInit, options?: FetchWithRetryOptions): Promise<any>;