Having a non-enumerable Array.prototype.contains may not be web-compatible

[Michał Wadas]

Bug in MooTools is not a reason to make any method of Array.prototype
enumerable.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.mozilla.org/pipermail/es-discuss/attachments/20140930/69309c19/attachment-0001.html>