This allows a service worker to get its ServiceWorker object with self.serviceWorker in a service worker script and its current state with self.serviceWorker.state in the script.
A service worker instance currently has no way to get its current lifecycle state. There's a bit of a hack one can do where you keep track of the current event as a global variable but that's error prone and doesn't capture the waiting periods correctly. The best way to solve this would be to just allow a service worker to get its ServiceWorker object in a service worker script.
Unknown standards status - check spec link for status
Status in Chromium
Enabled by default
Consensus & Standardization
Intent to Prototype urlIntent to Prototype thread
Search tagsService Worker,
Last updated on 2021-08-16