See this issue in traceur: https://github.com/google/traceur-compiler/issues/605 Basically we're just hacking away the labels in aether.coffee to get it kind of not breaking, but the semantics are wrong for any originally labeled breaks and seem to turn all continues into breaks: http://discourse.codecombat.com/t/continue-seems-to-work-like-break/182 I wonder if there's a way we can make continues work?