import type { BlacklistStore } from './BlacklistStore.js';
/**
 * Invalidates access tokens by `jti` until natural expiry (+ optional grace period).
 */
export declare class JwtBlacklist {
    private readonly store;
    private readonly gracePeriodSeconds;
    /**
     * @param store - Underlying key/value store.
     * @param gracePeriodSeconds - Extra seconds to keep a blacklisted `jti` after token expiry.
     */
    constructor(store: BlacklistStore, gracePeriodSeconds: number);
    /**
     * Blacklists a JWT by `jti` until remaining lifetime + grace.
     *
     * @param token - Raw JWT string.
     */
    add(token: string): Promise<void>;
    /**
     * @param token - Raw JWT string.
     * @returns True when blacklisted.
     */
    isBlacklisted(token: string): Promise<boolean>;
    /**
     * Clears all blacklist entries.
     */
    flush(): Promise<void>;
}
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