I am able to log users into my application using Google Auth from Firebase. However, I can't seem to get any part of the User object to appear on the front end of my application (I'm using Pug templates). How can I achieve this?

This is the code that I am using to sign the user into my web app using Google Auth:

document.getElementById('LogInButton').addEventListener('click', (e) => {
  signInWithPopup(auth, provider)
    .then((result) => {
      // This gives you a Google Access Token. You can use it to access the Google API.
      const credential = GoogleAuthProvider.credentialFromResult(result);
      const token = credential.accessToken;
      // The signed-in user info.
      const user = result.user;
      // ...
      window.setTimeout(() => {
        location.assign('/dashboard');
      }, 1500);
    })
    .catch((error) => {
      // Handle Errors here.
      const errorCode = error.code;
      const errorMessage = error.message;
      // The email of the user's account used.
      const email = error.email;
      // The AuthCredential type that was used.
      const credential = GoogleAuthProvider.credentialFromError(error);
      // ...
    });
});

I would like to be able to reference the "user" variable in my .pug files throughout the application. Right now, I have a viewController file where I can pass in data, for example:

exports.getSignIn = (req, res) => {
  res.status(200).render('signin', {
    title: `Sign in`,
  });
};

Is there a way for me to pass the user object from index.js into my viewController so it's available in the Pug template? I'm pretty lost. Any help would be appreicated.