I'm working with the React Create App and implementing PWA features. I configured PWA manifest successfully, the app can be installed. Now I'm working on Offline mode and here is a problem. For local development, CRA uses webpack dev server. The app runs on http://localhost:3000
When I add the app to my Desktop and turn off the internet and the webpack dev server I'm facing the error: The webpage at http://localhost:3000/index.html might be temporarily down or it may have moved permanently to a new web address.
It looks like it doesn't work without the working server, eg. a connection. So I can't test the PWA features because it just doesn't work in a Standalone Mode without any connection (internet & webpack dev server) but I have to.
Is it possible to handle it somehow? Or I'm doing something wrong?
Basically my question is: How to the PWA Offline mode locally in a Standalone mode when PWA installed on Homescreen and the Internet and Dev server are turned off.
Thanks for any help! Kind Regards.