import { Message } from '../models';
export declare const ChatGraphAnnotation: import("@langchain/langgraph").AnnotationRoot<{
    id: {
        (annotation: import("@langchain/langgraph").SingleReducer<string | undefined, string | undefined>): import("@langchain/langgraph").BaseChannel<string | undefined, string | import("@langchain/langgraph").OverwriteValue<string | undefined> | undefined, unknown>;
        (): import("@langchain/langgraph").LastValue<string | undefined>;
        Root: <S extends import("@langchain/langgraph").StateDefinition>(sd: S) => import("@langchain/langgraph").AnnotationRoot<S>;
    };
    files: {
        (annotation: import("@langchain/langgraph").SingleReducer<Express.Multer.File[] | undefined, Express.Multer.File[] | undefined>): import("@langchain/langgraph").BaseChannel<Express.Multer.File[] | undefined, Express.Multer.File[] | import("@langchain/langgraph").OverwriteValue<Express.Multer.File[] | undefined> | undefined, unknown>;
        (): import("@langchain/langgraph").LastValue<Express.Multer.File[] | undefined>;
        Root: <S extends import("@langchain/langgraph").StateDefinition>(sd: S) => import("@langchain/langgraph").AnnotationRoot<S>;
    };
    prompt: {
        (annotation: import("@langchain/langgraph").SingleReducer<string, string>): import("@langchain/langgraph").BaseChannel<string, string | import("@langchain/langgraph").OverwriteValue<string>, unknown>;
        (): import("@langchain/langgraph").LastValue<string>;
        Root: <S extends import("@langchain/langgraph").StateDefinition>(sd: S) => import("@langchain/langgraph").AnnotationRoot<S>;
    };
    userMessage: {
        (annotation: import("@langchain/langgraph").SingleReducer<Message | undefined, Message | undefined>): import("@langchain/langgraph").BaseChannel<Message | undefined, Message | import("@langchain/langgraph").OverwriteValue<Message | undefined> | undefined, unknown>;
        (): import("@langchain/langgraph").LastValue<Message | undefined>;
        Root: <S extends import("@langchain/langgraph").StateDefinition>(sd: S) => import("@langchain/langgraph").AnnotationRoot<S>;
    };
    aiMessage: {
        (annotation: import("@langchain/langgraph").SingleReducer<Message | undefined, Message | undefined>): import("@langchain/langgraph").BaseChannel<Message | undefined, Message | import("@langchain/langgraph").OverwriteValue<Message | undefined> | undefined, unknown>;
        (): import("@langchain/langgraph").LastValue<Message | undefined>;
        Root: <S extends import("@langchain/langgraph").StateDefinition>(sd: S) => import("@langchain/langgraph").AnnotationRoot<S>;
    };
    messages: import("@langchain/langgraph").BaseChannel<import("@langchain/core/messages").BaseMessage<import("@langchain/core/messages").MessageStructure<import("@langchain/core/messages").MessageToolSet>, import("@langchain/core/messages").MessageType>[], import("@langchain/langgraph").OverwriteValue<import("@langchain/core/messages").BaseMessage<import("@langchain/core/messages").MessageStructure<import("@langchain/core/messages").MessageToolSet>, import("@langchain/core/messages").MessageType>[]> | import("@langchain/langgraph").Messages, unknown>;
}>;
export type ChatState = typeof ChatGraphAnnotation.State;