Service Worker: Do not resurrect uninstalled workers.
Previously, service workers were resurrected when they were updated or when the same script was registered while the service worker was still alive. Now, registering a service worker will always create a new instance, regardless whether there already is a running instance or not. This spec change was intended to address the confusion that a service worker could become active again with no corresponding activate event.
Status in Chromium
In development (tracking bug)
Consensus & Standardization
Last updated on 2019-10-08