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

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

--- Comment #5 from Olli Pettay <bugs@pettay.fi> ---
Oh, I see.

Yeah, that newFeature shouldn't cause throwing, unless
having newFeature: true and childList: true doesn't make sense in the
implementations which support newFeature.

That is similar to 
observe(node, {  attributeOldValue: true, attributes: false}); which throws.

So, {} should throw, since it doesn't cause any node to be observed in anyway.

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Received on Tuesday, 21 October 2014 19:26:53 UTC