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A comment on Object.observe withdrawn from TC39. Parent comment

Re:Object.observe withdrawn from TC39 by i_s on Monday November 02, 2015 @09:27PM (#10496993)
If Cocoa KVO was well done, this would not need to exist:

https://github.com/facebook/KVOController

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Re:Object.observe withdrawn from TC39 by plorkyeran on Monday November 02, 2015 @10:38PM (#10497311)
KVO's API could be a lot better (even just making it target-action would be a huge improvement), but at the time it was created you couldn't do a block based API (since they didn't exist yet), and thread-safe automatic deregistration without zeroing weak pointers would be very complex and have a lot of overhead.
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Re:Object.observe withdrawn from TC39 by arcticbull on Monday November 02, 2015 @11:56PM (#10497654)
The key paths are still stringly-typed so maintainability is a nightmare :(
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