Exploring ES2016 Decorators

Also: A decorator in Python does not necessarily return the same function it received.

It is not precisely clear decorators will make it into ES2016 yet (maybe ES2017?). That is why it is better to say ES Next or something like that.

It seems like only methods can be decorated. Is there any hope for decorators on top-level functions in the future?

I sure hope all these extensions will not bring down the raw performance of various javascript engines.