I recently built a full-stack app with Deno (and their Fresh framework https://fresh.deno.dev) called Invo (https://invo.ee) and the whole experience was delightful. I was able to move really fast and I never had to touch a configuration file, which also immensely helped with my motivation of actually building something - far too often I get stuck in a pile of config (I do Clojure mostly) and lose any motivation I had.