interface ProcessOptions {
    buffers: any;
    powerLevel: number;
    bufferDuration: number;
    bufferSampleRate: number;
    newBufferIdx: number;
    asyncEnd: any;
}
interface MetroAgentOptions {
    client: any;
    ttsClient?: any;
    ttsDelay?: number;
    wakeStatus?: boolean;
    asrWsUrl: string;
    asrConfig?: any;
    sampleRate?: number;
    clearBufferIdx?: number;
    wakeupWord?: string[];
    dormancyWord?: string[];
    welcomeWord?: string;
    goodbyeWord?: string;
    apiKey?: string;
    baseURL?: string;
    model?: string;
    stream?: boolean;
    chatLoading?: boolean;
    maxRetries?: number;
    timeout?: number;
    wakeTimeout?: number;
    wakeTimeoutTimer?: any;
    fetch?: any;
    recClient?: any;
    Recorder?: any;
    currentChatResponse?: any;
    currentChatController?: any;
    onWake?: (welcomeWord: string) => void;
    onDormancy?: (welcomeWord: string) => void;
    onMessage?: (data: any, wakeStatus: boolean, ttsStatus: boolean) => void;
    onChange?: (source?: string) => void;
    onStart?: () => void;
    onSend?: (client?: any, sample?: any) => void | null | undefined;
    onStream?: (message: string) => void;
    onCompleted?: (message?: any) => void;
    onError?: (error: any) => void;
    onRecProcess?: ({ buffers, powerLevel, bufferDuration, bufferSampleRate, newBufferIdx, asyncEnd }: ProcessOptions) => void;
    onAudioWaveform?: (powerLevel: number) => void;
}
export declare class MetroAgent {
    client: any;
    ttsQueue?: any;
    asrWsUrl: string;
    asrConfig: any;
    sampleRate: number;
    clearBufferIdx: number;
    private wakeupWord;
    dormancyWord: string[];
    welcomeWord: string;
    goodbyeWord: string;
    apiKey: string;
    baseURL: string;
    model: string;
    stream: boolean;
    chatLoading: boolean;
    maxRetries: number;
    timeout: number;
    wakeTimeout: number;
    wakeTimeoutTimer: any;
    fetch: any;
    recClient: any;
    Recorder: any;
    currentChatResponse: any;
    currentChatController: any;
    private wakeStatus;
    onSend: any;
    onWake: (welcomeWord: string) => void;
    onDormancy: (goodbyeWord: string) => void;
    onMessage: (data: any, wakeStatus: boolean, ttsStatus: boolean) => void;
    onChange: (source?: string) => void;
    onStart: () => void;
    onStream: (message: any) => void;
    onCompleted: (message?: any) => void;
    onError: (error?: any) => void;
    onRecProcess: ({ buffers, powerLevel, bufferDuration, bufferSampleRate, newBufferIdx, asyncEnd }: ProcessOptions) => void;
    onAudioWaveform?: (powerLevel: number) => void;
    constructor(options: MetroAgentOptions);
    start(): void;
    private formatContent;
    private ArrayBufferToBase64;
    private defaultRecProcess;
    recClientSend(sample: string | ArrayBuffer): void;
    private chat;
    sendChatMessage(messages: any[], data?: {}): Promise<void>;
    tts(text: string): Promise<void>;
    ttsClear(): void;
    get ttsSpeaking(): boolean;
    setWakeStatus(status: boolean): void;
    setWakeupWord(word: string[]): void;
    close(): void;
    stop(): void;
    destroy(): void;
    private wakeTimeoutFn;
    private changeWakeSilence;
}
export {};