import type { SkillSessionState } from './skill-session.types';
/**
 * Interface for skill session storage.
 * Implementations can store session state in memory, Redis, etc.
 */
export interface SkillSessionStore {
    /**
     * Save or update a session state.
     */
    save(session: SkillSessionState): Promise<void>;
    /**
     * Get a session state by ID.
     * Returns null if session doesn't exist.
     */
    get(sessionId: string): Promise<SkillSessionState | null>;
    /**
     * Update specific fields of a session.
     */
    update(sessionId: string, updates: Partial<SkillSessionState>): Promise<void>;
    /**
     * Delete a session.
     */
    delete(sessionId: string): Promise<void>;
    /**
     * List active sessions (sessions with an active skill).
     */
    listActive(options?: {
        limit?: number;
    }): Promise<SkillSessionState[]>;
    /**
     * Clean up expired sessions.
     * @param maxAge - Maximum age in milliseconds
     */
    cleanup(maxAge: number): Promise<number>;
    /**
     * Store type identifier.
     */
    readonly type: 'memory' | 'redis' | 'custom';
}
/**
 * In-memory implementation of SkillSessionStore.
 * Suitable for single-instance deployments or testing.
 */
export declare class MemorySkillSessionStore implements SkillSessionStore {
    readonly type: "memory";
    private sessions;
    /**
     * Deep-clone the activeSkills Map and its nested Sets.
     */
    private cloneActiveSkills;
    save(session: SkillSessionState): Promise<void>;
    get(sessionId: string): Promise<SkillSessionState | null>;
    update(sessionId: string, updates: Partial<SkillSessionState>): Promise<void>;
    delete(sessionId: string): Promise<void>;
    listActive(options?: {
        limit?: number;
    }): Promise<SkillSessionState[]>;
    cleanup(maxAge: number): Promise<number>;
    /**
     * Clear all sessions. Useful for testing.
     */
    clear(): void;
    /**
     * Get the number of stored sessions.
     */
    size(): number;
}
/**
 * Factory function to create a skill session store.
 */
export declare function createSkillSessionStore(options?: {
    type?: 'memory' | 'redis';
    redis?: {
        host?: string;
        port?: number;
        keyPrefix?: string;
    };
}): SkillSessionStore;
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