import { ILogger, RetryConfig } from './types';
/**
 * Retry a function with exponential backoff and jitter.
 *
 * @param fn        - The async function to retry
 * @param config    - Retry configuration
 * @param logger    - Logger for retry attempts
 * @param onRetry   - Optional callback invoked on each retry with (attempt, error)
 */
export declare function withRetry<T>(fn: () => Promise<T>, config: Partial<RetryConfig> | undefined, logger: ILogger, onRetry?: (attempt: number, error: unknown) => void): Promise<T>;