import type { ModelMessage } from 'ai';
import type { Session, WorkingMemory } from '../types/index.js';
import type { SessionStore } from '../session/SessionStore.js';
import type { ConversationState } from './ConversationState.js';
export interface DefaultConversationStateConfig {
    sessionStore: SessionStore;
    defaultAgentId: string;
}
/**
 * Default conversation state implementation extracted from Runtime.
 *
 * Handles:
 * - Session load/create/save/delete via SessionStore
 * - Message appending with normalization
 * - Turn counting
 * - Working memory access
 */
export declare class DefaultConversationState implements ConversationState {
    private sessionStore;
    private defaultAgentId;
    constructor(config: DefaultConversationStateConfig);
    load(sessionId: string, userId?: string): Promise<Session>;
    save(session: Session): Promise<void>;
    delete(sessionId: string): Promise<void>;
    workingMemory(session: Session): WorkingMemory;
    appendUserMessage(session: Session, text: string): void;
    appendAssistantMessage(session: Session, text: string): void;
    appendMessage(session: Session, message: ModelMessage): void;
    getSessionTurn(session: Session): number;
    bumpSessionTurn(session: Session): number;
    touchSession(session: Session): void;
    createSession(id: string, defaultAgentId: string, userId?: string): Session;
}