import type { CookieOptions, Request, Response } from 'express';
/** Default cookie path for auth cookies. */
export declare const COOKIE_DEFAULT_PATH = "/";
/** Determines if a request should use secure cookies. */
export declare const isSecureRequest: (req: Request) => boolean;
/** Builds cookie options using consistent security defaults. */
export declare function buildCookieOptions(req: Request, options?: {
    maxAgeMs?: number;
}): CookieOptions;
/** Sets a cookie using shared defaults. */
export declare function setCookie(res: Response, req: Request, name: string, value: string, options?: {
    maxAgeMs?: number;
}): void;
/** Clears a cookie, optionally using the same security flags as set. */
export declare function clearCookie(res: Response, name: string, req?: Request): void;
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