"Vite" vs "Vite preview"

[albgen]

well,

thanks for Vite first of all :)

Now, i lost a lot of time trying to understand whats wrong with my project as it working partially which means, everything fine, except the registration of a service worker.
Turns out that the issue was running just vite so without the preview. Running with "vite preview", it started working normally.

How come the service workers does not register at all when you run only vite command (without the preview param)?

I can provide a sample if necessary.

thank you