I might be a bad example, but when I see a "not supported in IE" mention and there's no pollyfill, the feature goes to the same bucket as the cool Dart features

I might be a bad example, but when I see a "not supported in IE" mention and there's no pollyfill, the feature goes to the same bucket as the cool Dart features and the fun things you can do in the next version of ecmascript. Good to hear they exist, but I'll properly learn them when I'll be able to use them.