import type { Server } from 'node:net';
/**
 * Wait for one shutdown stage without allowing it to consume systemd's entire
 * stop timeout. The work is not cancelled: deployment/lease code retains its
 * own fencing rules, while the caller decides whether an expired global drain
 * deadline must terminate the process non-zero.
 */
export declare function settleWithin(work: Promise<unknown>, timeoutMs: number, setTimer?: typeof setTimeout, clearTimer?: typeof clearTimeout): Promise<boolean>;
/** Stop accepting local Vault clients, but never let one stale socket defeat shutdown. */
export declare function closeServerWithin(server: Server, timeoutMs: number): Promise<boolean>;