Third wrinkle: ({ foo: undefined }).foo vs ({}).foo Sometimes the value is undefined, but the key exists :)
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Maybe we need a third distinction: void vs null vs undefined


(I'm looking at you typescript)
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I didn't have the heart to tell them that undefined is not a function
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Portland is so over
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@vaidehijoshi Remember Visual Basic? "The four magic constants of the apocalypse: Nothing, Null, Empty, and Error."Thanks. Twitter will use this to make your timeline better. UndoUndo
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Yikes!
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