Bun

I immediately made the mistake of trying to migrate an entire existing medium-sized project. After failing miserably at that, I set up a fresh project a few versions back. Absolutely loved the built-in APIs. Speed difference was noticeable with plenty of tasks, especially the package manager—pretty fun to work with overall. I haven’t played with it enough to really determined what I don’t like about it yet

I replaced Node with Bun on my Astro website, and it's really cool. Only noticeable changes are a bit different CLI and faster package installation.