import { LangGraphRunnableConfig } from '@langchain/langgraph';
import { ChatState } from '../../state';
import { IGraphNode } from '../../types';
import { ChatStore } from '../chat.store';
export declare class InitSessionNode implements IGraphNode<ChatState> {
    private readonly chatStore;
    private readonly systemContext?;
    constructor(chatStore: ChatStore, systemContext?: string[] | undefined);
    execute(state: ChatState, config: LangGraphRunnableConfig): Promise<ChatState>;
    private _formatMessage;
}