import React from "react";
interface LockOverlayProps {
    /**
     * Validates the password and unlocks the session. Throw on bad
     * password — the overlay catches and surfaces a generic error.
     */
    onUnlock: (password: string) => Promise<void> | void;
    /** Optional success-toast message. Defaults to `${appName} unlocked`. */
    successMessage?: string;
    /**
     * Optional biometric/passkey unlock. When provided, this fires
     * AUTOMATICALLY once on mount, and the password field/Unlock button
     * are not rendered at all until this settles — see the mode-switching
     * comment below for why. This overlay has no opinion on *how* unlock
     * happens (passkey PRF, platform secure-storage, etc.) — the caller
     * owns the whole ceremony and is expected to swallow expected failure
     * modes (user cancel, nothing enrolled) rather than throw; a throw
     * here surfaces the same generic "unlock failed" error the password
     * path does, which is the wrong message for "you tapped cancel on the
     * Face ID prompt".
     */
    onBiometricUnlock?: () => Promise<void> | void;
    /**
     * Whether `onBiometricUnlock` fires automatically on mount. Defaults
     * to true (the original behavior) — set false for a re-lock triggered
     * by idle timeout rather than a fresh app launch, so the OS biometric
     * sensor doesn't pop up unprompted every time the session times out
     * from inactivity. The manual "Unlock with Biometrics Instead" button
     * is unaffected by this — it's still shown (and still works) whenever
     * `onBiometricUnlock` is provided, regardless of this flag; only the
     * automatic first attempt is what this suppresses.
     */
    autoPromptBiometric?: boolean;
}
/**
 * Unlock form for session-locked flows (e.g. vault re-lock after idle).
 * The typed password never leaves this component — it is captured into a
 * local closure variable and wiped from React state before the async
 * unlock work begins so the fiber tree no longer references the
 * plaintext during PBKDF2 / WebCrypto derivation.
 */
export declare function LockOverlay({ onUnlock, successMessage, onBiometricUnlock, autoPromptBiometric, }: LockOverlayProps): React.JSX.Element;
export {};
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