What is currently relevant to use for WebRTC with Node.js?

Question

JavaScript

Task: create a p2p video chat using a node as a signal server.
What libraries, visual (not overloaded) examples of a complete implementation can be seen?
I was not familiar with WebRTC before, the initial task is primitive - at least play around with it.
I saw that webrtc often changed the standard, therefore, I focus on the issue of the relevance of lib / materials.