What should I do with the redundant state of a ServiceWorker?

It's kinda difficult to work out what your intent is here so I'll try and answer the question generally.

A service worker will become redundant if it fails to install or if it's superseded by a newer service worker.

What you do when this happens is up to you. What do you want to do in these cases?

Based on the definition here https://www.w3.org/TR/service-workers/#service-worker-state-attribute I am guessing just print a log in case it comes up in debugging otherwise do nothing.