Comment by skybrian
I’ve been using Deno too. Although npm support has improved and it’s fine for me, I think Deno has more of a “rewrite the world” philosophy. For example, they created their own package registry [1] and their own web framework [2]. Bun seems much more focused on preexisting JavaScript projects.
It's interesting that people have directly opposite opinions on whether Deno or Bun are meant to be used with the existing ecosystem - https://news.ycombinator.com/item?id=46125049