export declare enum CallbackType {
    OPEN = "OPEN",
    FAIL = "FAIL",
    CLOSE = "CLOSE",
    RECEIVE_MSG = "RECEIVE_MSG"
}
export interface CallbackMethod {
    (cbType: CallbackType, payload?: any): void;
}
export declare enum LanguageCode {
    CHINESE = "zh",
    ENGLISH = "en",
    JAPANESE = "ja"
}
export declare const SmartErrorCode: {
    HEART_BEAT_ERROR: number;
    FRONTIER_SOCKET_ERROR: number;
    SPEAKER_SOCKET_ERROR: number;
};