That is a fair point, if I&#x27;m using Rails I actually just use plain old JS as I don&#x27;t personally like CS.<p>I just found a comment by a Rails contributor [1] which says ES6 will be supported out of the box in Rails 5, which would be ideal. I can&#x27;t find anything newer to back that up though. I think it might be via ES6 support baked into sprockets.<p>[1] <a href="http:&#x2F;&#x2F;kryptonlabs.com&#x2F;blog&#x2F;2015&#x2F;10&#x2F;25&#x2F;whats-new-in-rails-5&#x2F;#comment-2326469442" rel="nofollow">http:&#x2F;&#x2F;kryptonlabs.com&#x2F;blog&#x2F;2015&#x2F;10&#x2F;25&#x2F;whats-new-in-rails-5&#x2F;...</a>