/**
 * Retry manager for handling request retries
 */
import type { IRetryOptions } from '../webrequest.types.js';
export declare class RetryManager {
    private options;
    constructor(options?: IRetryOptions);
    /**
     * Execute a request with retry logic
     */
    execute<T>(executeFn: () => Promise<T>, shouldRetryFn?: (error: any, attempt: number) => boolean): Promise<T>;
    /**
     * Execute with multiple fallback URLs
     */
    executeWithFallbacks(urls: string[], requestInit: RequestInit, fetchFn: (url: string, init: RequestInit) => Promise<Response>): Promise<Response>;
    /**
     * Check if we should retry based on response status
     */
    private shouldRetryResponse;
    /**
     * Check if we should retry based on error
     */
    private shouldRetryError;
    /**
     * Calculate delay for next retry
     */
    private calculateDelay;
    /**
     * Delay execution
     */
    private delay;
}