Working example of express + passport + social network authorization

Question

Node.js

I really want to see a working example of an application on express.js + passport with a working authorization through social networks. There is, of course, a wonderful node-express-mongoose-demo , but it does not link logins from different networks (when you log in via FB and Twitter, the application considers you to be different users), which, frankly, is ridiculous.
I'm fine with JS, but I haven't worked on the backend for a very long time.

Answer 1

scotch.io/tutorials/javascript/easy-node-authentic...
Demo: node-authentication.azurewebsites.net

Answer 2

1. www.itlessons.info/nodejs/auth-with-express-and-pa...
2. habrahabr.ru/post/193458