Started a new job in the past year and it's 50% rails, 50% react. Thought I would chafe after returning to ruby after ten years of nothing but JS and TS, but I quite like it.

I only wish there was slightly less magic and a bit more declaration. It always weirds me out that Ruby just finds stuff without me having to 'import' or 'require' it. I have a love/hate relationship with much of the DSL stuff too (more 'magic') but overall, working with Rails and Ruby is quite nice.