import { Readable } from 'stream';
import { uploadData, RetryOptions } from './interfaces';
export declare const parseJson: (source: string) => any;
export declare const streamFromData: (data: uploadData) => Promise<Readable>;
export declare const getFreshStreamChecker: () => (stream: Readable) => void;
/**
 * if values are higher or lower the limit - they'll be overwritten.
 * returns valid values for RetryOptions
 */
export declare const validateAndGetRetryOptions: ({ retriesCount, requestTimeout }: RetryOptions) => RetryOptions;
export declare const exponentialSleep: (currentRetries: number) => Promise<unknown>;
export declare const exponentialDelay: (currentRetries: number) => number;