Auth0 Angular2+ ParseHash with error handling of rules

auth0.service.ts

public handleAuthentication(): void {
    this.auth0.parseHash({}, (err, authResult) => {
      if (authResult && authResult.accessToken && authResult.idToken) {
        this.localLogin(authResult);

        this.auth0.client.userInfo(authResult.accessToken, function (err, user) {
          localStorage.setItem("user_id", user.sub);
        });

        this.router.navigate(['/home']);
      } else if (err) {
        console.log(err);

        // Handle unauthorized errors 
        if (err.error === "unauthorized" ){
          console.log("Got an error from Auth0 in Hash fragment");
          // Show error to user
        }

        this.router.navigate(['/home']);
      }
    });
  }