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

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

--- Comment #12 from Olli Pettay <bugs@pettay.fi> ---
Other option is to never throw from observe() (but that would be just a bad
API).
Either we throw in all the cases observe() doesn't do anything sane, or we
never throw.
No special cases. Consistency, pretty please.

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Received on Tuesday, 21 October 2014 23:19:58 UTC