How to serve assets in dev mode with service worker

[jfrancos]

I followed the instructions here for setting up workbox:

https://www.snowpack.dev/guides/workbox/

And it works great. But getting it working in a build seems somewhat unrelated to getting it working with snowpack dev.

Can someone help me setup workbox for use in dev mode, or guide me towards some other way of serving assets with a service worker (offline) in dev mode? (Ideally with as simple of a setup as getting it working in a build)