XDN DevTools Dependencies

Why do XDN DevTools depend on service-worker.js and @xdn/prefetch/ws?

Caching is often a prerequisite for prefetching.

Can I use XDN DevTools to get more information about request caching and performance before enabling a service worker and prefetching?

The XDN combined caching and prefetching to create zero latency experiences. XDN DevTools is designed to show off how edge caching and prefetching work as you browse around the website. It’s recommended you always enable both caching and prefetching.