I find myself now thinking in Swift and coding in ES6... looks like SwiftJS is dead [0] but notice the Cocos2D folks just released a Swift-to-Android feature [1]. I really wouldn't mind Swift uber alles... someday.

[0] https://github.com/shift-js/shift-js [1] http://forum.cocos2d-objc.org/t/swift-version-is-ported-to-a...