Question single sign on with a node app

[Chanon Sajjamanochai]

Hi,

My website is developed using node.js as an express app. Could someone give me any pointers on how I could use NodeBB's user signup / auth system / user session in my express app too?

Is it possible to hook into the NodeBB app so it and my website app run in the same node process and share user session that way? Or would it be better to separate the node processes and communicate user info another way?