import { ChatGoogleGenerativeAI } from '@langchain/google-genai';
import { LangChainAssistant } from './langchain';
import { AudioToTextProps, ProcessImageMessageProps } from '../types';
export declare class GoogleAssistant extends LangChainAssistant {
    protected aiModel: ChatGoogleGenerativeAI | null;
    protected static instance: GoogleAssistant | null;
    private constructor();
    static getInstance(): Promise<GoogleAssistant>;
    restart(): void;
    private blobToBase64;
    audioToText({ audioBlob, audioBase64, }: AudioToTextProps): Promise<string>;
    processImageMessage({ imageMessage, textMessage, streamMessageCallback, }: ProcessImageMessageProps): Promise<void>;
}
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