/**
 * In-Memory Session Storage Implementation
 *
 * Default session storage that keeps all sessions in memory.
 * Sessions are lost when the MCP server restarts.
 * Zero configuration required - works out of the box.
 */
import { SpecialistSession, SessionSummary, SessionStorage, SessionStorageConfig } from '../../types/session-types.js';
export declare class InMemorySessionStorage implements SessionStorage {
    private sessions;
    private config;
    constructor(config?: SessionStorageConfig);
    createSession(session: SpecialistSession): Promise<void>;
    getSession(sessionId: string): Promise<SpecialistSession | null>;
    updateSession(session: SpecialistSession): Promise<void>;
    deleteSession(sessionId: string): Promise<void>;
    getUserSessions(userId: string): Promise<SessionSummary[]>;
    getActiveSessions(userId: string): Promise<SessionSummary[]>;
    getSpecialistSessions(specialistId: string): Promise<SessionSummary[]>;
    cleanupExpiredSessions(): Promise<number>;
    getUserSessionCount(userId: string): Promise<number>;
    private cleanupIfNeeded;
    private toSessionSummary;
    private extractPrimaryTopics;
    getMemoryStats(): {
        sessionCount: number;
        totalMessages: number;
        memoryUsageKB: number;
    };
}
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