interface SocketAudioInputMessage {
    type: 'audio';
    payload: {
        audio: string;
        markIndex: number;
    };
}
interface SocketEndInputMessage {
    type: 'end';
}
interface SocketInterruptInputMessage {
    type: 'interrupt';
}
interface SocketStartInputMessage {
    type: 'start';
    payload: {
        conversationID: string;
    };
}
interface SocketErrorInputMessage {
    type: 'error';
    payload: {
        message: string;
    };
}
interface SocketBackgroundAudioInputMessage {
    type: 'background_audio';
    payload: {
        src: string;
    };
}
export type SocketInputMessage = SocketStartInputMessage | SocketErrorInputMessage | SocketAudioInputMessage | SocketInterruptInputMessage | SocketEndInputMessage | SocketBackgroundAudioInputMessage;
interface SocketMarkOutputMessage {
    type: 'mark';
    payload: {
        markIndex: number;
    };
}
interface SocketStartOutputMessage {
    type: 'start';
    payload: {
        userID: string;
        assistantID: string;
        authorization?: string;
        transcript: {
            device?: string;
            os?: string;
            browser?: string;
            user?: {
                name?: string;
                image?: string;
            };
        };
    };
}
export type SocketOutputMessage = Blob | SocketMarkOutputMessage | SocketStartOutputMessage;
export declare class SocketService {
    private url;
    private socket;
    private onError;
    private onClose;
    private onMessage;
    private connectionPromise;
    constructor(options: {
        url: string;
        onError: (error: unknown) => void;
        onMessage: (message: SocketInputMessage) => void;
        onClose?: () => void;
    });
    private createSocket;
    private onSocketError;
    private onSocketMessage;
    private onSocketClose;
    start(): Promise<void>;
    stop(): void;
    send(message: SocketOutputMessage): void;
}
export {};
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