import { LLMService } from "../main-services/LLMAgent";
import { AppLLMServiceOptions, LLMMessage } from "@monorepo/src/app/Types/firebase";
export declare class LangGraphLLMService extends LLMService {
    private options;
    private langGraphLLM;
    private cancelController;
    private messagesHistory;
    private currentNode;
    private lgTools;
    private nodes;
    private variables;
    private tools;
    private globalVarsValues;
    private kbContextString;
    constructor(options: AppLLMServiceOptions);
    private getNodeById;
    private getConnectedNodes;
    private getPreviousConnectedNodeFromCurrentConnectedNodes;
    private getConditionObjectFromNodeBasedOnCurrentNode;
    private createSystemPrompt;
    private routeNode;
    getMessagesHistory(): LLMMessage[];
    tryAbortCurrentStream(): void;
    private updateMessagesHistory;
    invokeTurn(utterance?: string): void;
    private processAssistantResponse;
    postUtteranceEnd(): Promise<void>;
    kill(): void;
}