yup-oauth2 is a utility library which will implement oauthv2 device authentication suitable for yup to work.
It is implemented such that it makes no assumptions about the front-end, allowing more uses than just in yup.
Architecturally, it may never be implementing more than device authentication, yet is set up not to constrain itself.
Please have a look at the API landing page for all the examples you will ever need.
A simple commandline program which authenticates any scope and prints token information can be found in the examples directory.
The video below shows the auth example in action. It's meant to be used as utility to record all server communication and improve protocol compliance.
