[Bug 27122] MutationObserver.observe(node, {}) should throw

https://www.w3.org/Bugs/Public/show_bug.cgi?id=27122

--- Comment #3 from Olli Pettay <bugs@pettay.fi> ---
Well, MutationObserver.observe(node, { newFeature: true }) certainly should
throw if that newFeature isn't supported.

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Received on Tuesday, 21 October 2014 19:11:00 UTC