Moin. (Northern german greetings 
)
Am i right here?
In the Mozilla Wiki for Service Workers there is something missing i think.
https://wiki.mozilla.org/Service_Workers
It is how you can see all Service Workers working in your Browser:
about:serviceworkers
This should be integrated.
thx
Thank you and “moin” back 
I have added the “Outdated” flag to this page and added the following note on its talk page " Marked with “Outdated” flag as this is likely now fully implemented. MDN has some interesting information about this. Prompted by note on Discourse"
I do not know enough about the history of this subject to make any meaningful edits.
Spike (WMO admin)