Prettier is great. It's one less thing to think about, especially in teams of people with different opinions on code formatting.

I also love just banging out code without worrying about the formatting then hitting save and having my editor run prettier automatically.

We run it on our entire codebase (https://github.com/metabase/metabase), enforced by CI.

If you decide to migrate an existing codebase to use prettier here are some steps for merging existing branches after you've enabled prettier: https://gist.github.com/tlrobinson/6cad91b1203a7d2c174824a4d...

The only downside to migrating a codebase is it messes with `git blame` etc, but it's not too hard to follow changes back to before you ran prettier.