> > We need a deterministic order. What deterministic order do you suggest? > Why would it be better? >
Sorry for the confusion, I completely worded that wrong. I'm specifically referring to the specification sections 23.2.3.1 and 23.2.3.4 (specifying the behaviour for Set#add and Set#delete), which states that: 6. Repeat for each e that is an element of entries, *in original insertion > order* I don't see any real reason why that's needed, unless there's some odd side effects of doing so that I'm not aware of. Sets are meant to be unique and I don't think the order of checking whether the element already exists really matters. I'm not advocating for any change for the deterministic order of iteration in Set#forEach and for-of loops on sets.
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