I'm starting to do this with Elixir, even though I used to have a very favorable opinion of React on the front end. When you have a small, focused ecosystem whe

I'm starting to do this with Elixir, even though I used to have a very favorable opinion of React on the front end. When you have a small, focused ecosystem when dependencies often have few or no upstream dependencies, things just work better. The story around testing in my preferred stack is miles better than anything in JS land, and runs in parallel. One of the apps I work on has thousands of tests and the test run is under 4 minutes for all of them. They almost never break when dependencies are upgraded. It's really nice.