import type { StoreLogger } from '../types.js';
import type { BackupSession, BackupData } from './types.js';
export declare class SessionValidator {
    private logger;
    private readonly SESSION_KEY_PREFIX;
    constructor(logger: StoreLogger);
    validateSessionData(data: string): boolean;
    validateSessionKey(key: string): boolean;
    validateBackupData(data: unknown): data is BackupData;
    validateBackupSession(session: unknown): session is BackupSession;
    validateTTL(ttl: unknown): ttl is number;
    calculateTTL(sessionData: string): number;
    validateSessions(sessions: unknown[], options?: {
        sampleSize?: number;
        strict?: boolean;
    }): Promise<{
        valid: boolean;
        validCount: number;
        invalidCount: number;
        errors: string[];
    }>;
    isSessionExpired(sessionData: string): boolean;
}
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