export interface UseAutoLockOptions {
    /**
     * Reports whether the session is currently "unlocked" (vault-style
     * apps) or any other state where the auto-lock should still fire.
     * Returning `false` short-circuits the lock call.
     */
    isUnlocked: () => boolean;
    /** Called when the lock should fire. App owns side-effects. */
    onLock: () => void;
    /** Reports whether auto-lock is enabled for this user (settings flag). */
    isEnabled?: () => boolean | Promise<boolean>;
    /** Idle threshold in milliseconds. Defaults to 10 minutes. */
    idleLockMs?: number;
}
export interface UseAutoLockResult {
    /**
     * Call on any real user interaction to reset the idle clock. Required
     * on native: unlike web (which listens on `window` for
     * mousemove/touchstart/scroll/keydown directly), RN has no global
     * "any touch happened anywhere" event — a touch inside a `Pressable`,
     * `ScrollView`, etc. never reaches `window`, because there is no
     * `window` to reach. Without a caller wiring this up (e.g. a capture-
     * phase `onStartShouldSetResponderCapture` at the app root, returning
     * `false` so it never actually claims the touch), the idle timer is
     * armed once at mount and never reset — the session locks exactly
     * `idleLockMs` after mount/foreground REGARDLESS of how actively the
     * app is being used. Confirmed for real: a vault mid-active-use lost
     * its key mid-session, and every item silently failed to decrypt
     * (`Promise.allSettled` in the caller's list-fetch treats a decrypt
     * failure as "drop this item", not "the vault relocked"), which reads
     * to the user as vault items simply vanishing — no error, no visible
     * cause, on 2026-08-17.
     */
    notifyActivity: () => void;
}
/**
 * Auto-lock a session after a period of inactivity. Generic over the
 * lock predicate — vault wires `KeyManager.isUnlocked` / `KeyManager.lock`,
 * other apps wire their own state. Web uses an idle-timer only; native
 * additionally locks immediately when the app goes to the background.
 */
export declare function useAutoLock(options: UseAutoLockOptions): UseAutoLockResult;
//# sourceMappingURL=useAutoLock.d.ts.map