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A comment on Microsoft Edge's JavaScript engine to go open-source. Parent comment

Re:Microsoft Edge's JavaScript engine to go open-source by WorldMaker on Monday December 07, 2015 @12:09PM (#10690764)
Enumeration order was indeed (finally) added to the ES2015 spec. Here's a link to the release candidate spec for the [[OwnPropertyKeys]] algorithm:

https://people.mozilla.org/~jorendorff/es6-draft.html#sec-or...

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Re:Microsoft Edge's JavaScript engine to go open-source by bzbarsky on Monday December 07, 2015 @07:08PM (#10693820)
[[OwnPropertyKeys]] is not invoked by a for-in loop. [[Enumerate]] is instead, and while it defines that the set of iterated names is the same as that returned by [[OwnPropertyKeys]] it explicitly says that order is not defined.
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