> Le 5 août 2018 à 04:14, Darien Valentine <[email protected]> a écrit :
> 
> 
> However it is ultimately not possible to replicate because there is no 
> possible brand test for [[BooleanData]].

Per spec, checking whether `Boolean.prototype.valueOf.call(obj)` throws will 
test whether an object has [[BooleanData]] internal slot.

—Claude

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