Nuxt 3 
You need to stop the dev server once started and then to see the PWA in action run:
nr dev:preview:build: Nuxt build command + start servernr dev:preview:generate: Nuxt generate command + start server
| Example | Source | Playground | 
|---|---|---|
Auto Update PWA | GitHub | 
WIP
You can also check Elk repo for a real world example: we're working to update the repo.
Elk repo is using Push Notifications and Web Share Target API PWA capabilities and Prompt for update register type via injectManifest strategy.