import { Event, SessionInterface as Session, SessionsList } from './types';
import { BaseSessionService, ListEventsResponse } from './BaseSessionService';
export declare class InMemorySessionService extends BaseSessionService {
    private sessions;
    private userState;
    private appState;
    /**
     * Implementation of updateSessionState abstract method
     * Updates a session's state.
     *
     * @param appName The application name
     * @param userId The user ID
     * @param sessionId The session ID
     * @param stateDelta The changes to apply to the session state
     * @returns The updated session
     */
    updateSessionState(appName: string, userId: string, sessionId: string, stateDelta: Record<string, any>): Promise<Session>;
    createSession(options: {
        appName: string;
        userId: string;
        sessionId?: string;
        state?: Record<string, any>;
    }): Session;
    getSession(options: {
        appName: string;
        userId: string;
        sessionId: string;
    }): Session | null;
    listSessions(options: {
        appName: string;
        userId: string;
    }): SessionsList;
    deleteSession(options: {
        appName: string;
        userId: string;
        sessionId: string;
    }): void;
    listEvents(options: {
        appName: string;
        userId: string;
        sessionId: string;
    }): ListEventsResponse;
    appendEvent(options: {
        session: Session;
        event: Event;
    }): void;
    /**
     * Merges app and user state into the session
     */
    private mergeState;
    /**
     * Creates a deep copy of an object, preserving special types like Uint8Array
     */
    private deepCopy;
    /**
     * Creates a copy of an event while preserving special types like Uint8Array and Set
     */
    private copyEventPreservingSpecialTypes;
    /**
     * Creates a copy of a content object while preserving binary data
     */
    private copyContent;
    /**
     * Creates a copy of a part object while preserving binary data
     */
    private copyPart;
}