import { Express, NextFunction, Request, Response } from 'express';
/** Whether a string is a canonical (8-4-4-4-12) UUID. */
export declare const isUuid: (value: string) => boolean;
export declare const healthz: (app: Express) => void;
export declare const poweredBy: (name: string) => (req: Request, res: Response, next: NextFunction) => Promise<void>;
export declare const trustProxy: (app: Express, trustProxy?: boolean) => void;