How do you send an authenticated request?

export default async function requireAuth(req: Request, _res: Response, next: NextFunction) {
    try {
        const session = await auth.api.getSession({
            headers: fromNodeHeaders(req.headers),
        });

        if (!session || !session.user || !session.session) {
            throw new UnauthorizedError();
        }

        req.user = session.user as User;
        req.session = session.session as Session;

        next();
    } catch (err) {
        next(new UnauthorizedError("Invalid or expired session"));
    }
}

api.interceptors.request.use(
    (config) => {
        // This code will only run on the client-side
        if (typeof window !== "undefined") {
            const token = localStorage.getItem("bearer_token");
            if (token) {
                config.headers["Authorization"] = `Bearer ${token}`;
            }
        }
        return config;
    },
    (error) => {
        return Promise.reject(error);
    }
);