Unable to see development

I am missing something simple here. I was using the previous version, and am trying to get started on CLI. I can run the install and have the app framework. There is a src folder where I am supposed to make my changes. However, nothing I edit shows up when I run ‘npm start’. It always shows the original template. If I change index.html nothing changes. I tried stopping and running ‘npm start’ again.

If I run ‘npm run build-dev’ it builds the app into the www folder with my changes. That’s fine, but I can’t see any of this while developing.

How can I develop and see my changes from the src folder? I read the documentation multiple times and cannot figure this out.

Sorry, it was the service-worker.js. I had to comment those lines out and then go in and clear the cache files in my browser for the application.