I know many languages, including Swift and Ruby, and I've actually started to prefer modern Javascript. I really enjoy writing ES7 JavaScript with Flow or TypeS

I know many languages, including Swift and Ruby, and I've actually started to prefer modern Javascript. I really enjoy writing ES7 JavaScript with Flow or TypeScript, and everything else in the ecosystem (babel, webpack, yarn, etc.) I will admit that Swift is a much better language, but I prefer working with modern JavaScript these days.