I use SvelteQuery with Svelte tRPC. How to send error or success response ?

export const authenticateUser = async (formData: z.infer<LoginSchema>) => {
    const { username, password } = formData;
    const [user] = await db.select().from(users).where(eq(users.username, username)).limit(1);

    if (!user) {
        return sendTRPCResponse({
            status: 401,
            message: m.login_message_user_not_exists()
        });
    }

    const isCorrectPassword = await bcrypt.compare(password, user.password);

    if (!isCorrectPassword) {
        return sendTRPCResponse({
            status: 401,
            message: m.login_message_mismatch_credentials()
        });
    }

    const { token, refreshToken } = await createJWT(user.id);

    if (!token && !refreshToken) {
        return sendTRPCResponse({
            status: 401,
            message: m.login_message_session_error()
        });
    }

    return sendTRPCResponse(
        {
            status: 200,
            message: 'ok'
        },
        {
            token,
            refreshToken
        }
    );
};

export const authenticateUser = async (formData: z.infer<LoginSchema>) => {
    const { username, password } = formData;
    const [user] = await db.select().from(users).where(eq(users.username, username)).limit(1);

    if (!user) {
        return sendTRPCResponse({
            status: 401,
            message: m.login_message_user_not_exists()
        });
    }

    const isCorrectPassword = await bcrypt.compare(password, user.password);

    if (!isCorrectPassword) {
        return sendTRPCResponse({
            status: 401,
            message: m.login_message_mismatch_credentials()
        });
    }

    const { token, refreshToken } = await createJWT(user.id);

    if (!token && !refreshToken) {
        return sendTRPCResponse({
            status: 401,
            message: m.login_message_session_error()
        });
    }

    return sendTRPCResponse(
        {
            status: 200,
            message: 'ok'
        },
        {
            token,
            refreshToken
        }
    );
};

export function sendTRPCResponse<T = void>(
    baseResponse: { status: number; message: string },
    data: T | undefined = undefined
) {
    return {
        ...baseResponse,
        data: data as T
    };
}

export function sendTRPCResponse<T = void>(
    baseResponse: { status: number; message: string },
    data: T | undefined = undefined
) {
    return {
        ...baseResponse,
        data: data as T
    };
}