/**
 * Append a `Set-Cookie` header to the response WITHOUT clobbering any cookies
 * already queued by the host (auth or otherwise). Platform-agnostic raw write —
 * no-ops gracefully if the response can't be unwrapped.
 */
export declare function appendSetCookie(response: unknown, cookie: string): void;
//# sourceMappingURL=auth-response.d.ts.map