/**
 * Session Management Module
 */
import type { SessionData, Attribution } from './types';
export declare class SessionManager {
    private sessionId;
    private sessionData;
    private sessionTimeout;
    private lastActivity;
    private SESSION_KEY;
    private activityCheckInterval;
    private activityListeners;
    private sessionCreationLock;
    constructor(timeout?: number);
    /**
     * Initialize or restore session
     */
    private initSession;
    /**
     * Check if session is still valid
     */
    private isSessionValid;
    /**
     * Create a new session
     *
     * FIXED (DATA-02): Added mutex lock to prevent race conditions
     */
    createNewSession(): string;
    /**
     * Rotate session ID (security measure)
     *
     * FIXED (DATA-05): Called when user identifies to prevent session fixation attacks
     * Keeps session data but generates new session ID
     */
    rotateSessionId(): string;
    /**
     * Get current session ID
     */
    getSessionId(): string;
    /**
     * Get session data
     */
    getSessionData(): SessionData | null;
    /**
     * Update session activity
     * FIXED (CRITICAL-04): Check session validity BEFORE updating lastActivity
     * This ensures sessions actually timeout after the configured period
     */
    updateActivity(eventType?: string): void;
    /**
     * Check if session is active
     */
    isSessionActive(): boolean;
    /**
     * End the current session
     * Fixed Issue #23: Stop activity monitor when session ends
     */
    endSession(): void;
    /**
     * Save session to storage
     */
    private saveSession;
    /**
     * Get session timeout
     */
    getTimeout(): number;
    /**
     * Set session timeout
     */
    setTimeout(timeout: number): void;
    /**
     * Store session attribution
     * Fixed Issue #24: Use single key instead of one per session
     */
    storeAttribution(attribution: Attribution): void;
    /**
     * Get session attribution
     * Fixed Issue #24: Use single key instead of one per session
     * FIXED (CRITICAL-04): Verify session is still active before returning attribution
     */
    getAttribution(): Attribution | null;
    /**
     * Get session metrics
     */
    getMetrics(): Record<string, any>;
    /**
     * Setup activity monitor for automatic session timeout
     */
    private setupActivityMonitor;
    /**
     * Cleanup listeners and timers
     */
    destroy(): void;
    /**
     * Get session number (count of sessions)
     */
    getSessionNumber(): number;
    /**
     * Increment session count
     */
    private incrementSessionCount;
}
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