> If CoffeeScript added an (optional) type system I'd switch back in an instant. The home page talks a little about achieving this by using Flow annotations i

> If CoffeeScript added an (optional) type system I'd switch back in an instant. The home page talks a little about achieving this by using Flow annotations in Coffeescript source and then having the build system pass the Javascript output to Flow: http://coffeescript.org/#type-annotations http://coffeescript.org/#type-annotations