> > Okay, so how will end users or jQuery authors upgrade their promises to > become ES6-compliant?
I don't know enough about jQuery's internals to write convincing code, but the basic idea is that you feature detect for ES6 Promises. If that test passes, then you implement jQuery.Deferred using a Promise subclass (which would do assimilation for backward compatibility reasons). Otherwise you implement it the old-fashioned way. Application developers who are going to hook into the new DOM API's need to upgrade their jQuery. Of course, jQuery promises will still over-assimilate objects which have a `then` method but aren't "thenable", but that's jQuery's backward compatibility problem, not the entire language's. Am I missing something? I usually do... : )
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