/**
 * Registers `visibilitychange` and `beforeunload` listeners that flush all
 * pending scheduled invites when the page is being torn down. On unmount the
 * listeners are removed and any remaining pending invites are flushed.
 *
 * Call this once in a long-lived component (e.g. the Team Links sidebar) so
 * that listeners survive popup open/close cycles.  Consumers that need to
 * schedule or cancel invites should import `spaceInviteScheduler` directly.
 */
export declare const useSpaceInviteScheduler: () => void;