You don't need to run a server for signalling. This can be done via Firebase events. (but then, you don't really need PeerJS - see https://webrtc.org/getting-st

You don't need to run a server for signalling. This can be done via Firebase events. (but then, you don't really need PeerJS - see https://webrtc.org/getting-started/firebase-rtc-codelab https://webrtc.org/getting-started/firebase-rtc-codelab)