Debugging Service Workers in Firefox - Progressive Web App Training
Channel: Chrome for Developers
Date: 2019-04-22

Have you ever seen the dreaded "service worker can't load its script" error? Do you wonder why your caches don't seem to work? 

This video shows you how to debug service workers in the Firefox Developer Tools.

Full playlist:
https://www.youtube.com/playlist?list=PLNYkxOF6rcIB2xHBZ7opgc2Mv009X87Hh