import { CommonRequest, CommonResponse } from "servie/dist/common";
/**
 * Browser detection.
 */
declare global {
    namespace NodeJS {
        interface Process {
            browser?: boolean;
        }
    }
}
/**
 * Check if the request should be attempted again.
 */
export declare function retryAllowed(error?: Error & {
    code?: string;
}, response?: CommonResponse): boolean;
/**
 * Init a default retry function.
 */
export declare function retries(count?: number, isRetryAllowed?: typeof retryAllowed): (error: Error | undefined, response: CommonResponse<unknown> | undefined, iter: number) => number;
/**
 * Middleware signature.
 */
export declare type App<T extends CommonRequest, U extends CommonResponse> = (req: T, next: () => Promise<U>) => Promise<U>;
/**
 * Middleware for running retry logic.
 */
export declare function retry<T extends CommonRequest, U extends CommonResponse>(fn: App<T, U>, shouldRetry?: (error: Error | undefined, response: CommonResponse | undefined, iter: number) => number, preFlight?: (req: T, iter: number, origRequest: T) => T): App<T, U>;