> an upgrade target for existing codebases That might be a little naive. I pick Coffeescript in a reflex without even considering ESxx, and I regularly start n

> an upgrade target for existing codebases That might be a little naive. I pick Coffeescript in a reflex without even considering ESxx, and I regularly start new projects large and small with it that go into production. It's a breeze compared to some of the modern Javascript codebases I have to work on. My overall development speed is definitely faster in Coffeescript, less bugs, no countless babel add-ons, no linters etc.. and the codebase often speaks for itself, less annotations, less code. Efficiency means a lot to me.