/**
 * Function to wait for the `ms`.
 */
export declare const sleep: (ms: number) => Promise<unknown>;
/**
 * Status code of rate limit responses.
 */
export declare const RATE_LIMIT_STATUS_CODE = 429;
/**
 * Array of any retryable status code.
 */
export declare const RETRYABLE_STATUS: number[];
/**
 * Function that use exponential backoff with jitter based on attempt.
 */
export declare const backoff: (attempt: number) => number;