facebook/regenerator — pull request #120 by eventualbuddha (2014-05-31 16:49:13+00:00)
Title: Implement the `@@iterator` method on generators.

Per the [spec][1], all this method does is return the generator itself. This is necessary to make generators from regenerator work properly with the spread element, which uses the `@@iterator` property on objects.

[1]: http://people.mozilla.org/~jorendorff/es6-draft.html#sec-generator.prototype-@@iterator