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Yeah ES7 has async and await which are pretty similar to that

Everyone forgets that Gevent has been around for years, and lets you write completely synchronous looking async code.

I think a better way of looking at it is there isn't enough "cross pollination" in big open-source frameworks and languages.

promises, async functions and generators will make writing async code look more sync in javascript/node.

Whether or not this is a good thing or not, I'm undecided.