How can I redirect my passport-twitter callback on the server back to the client with user data?

Nodejs newbie here working on my first passport authentication based full stack project for learning. Forgive me if my question is not clear.

There are 2 parts of my project. 1 server side which runs on port 3000 and uses express, and 1 client side based on react-redux that runs on port 8080. My client side has the "Sign in with twitter" button which redirects the user to server side "/auth/twitter" path for authentication.

My problem is with the callback which is "/auth/twitter/callback" and is on the server. I want to use the user object (twitter name and stuff) on my client side.

I don't know how to send response with user data back to client which is on a totally different server (and thus just routing with successRedirect: '/home/ won't work)

Any hint is appreciated. Stuck on this problem since last 2 days.

via jait