I recommend reading the ECMA-404 spec instead. It's less ambiguous, and basically says that you can treat the pairs as ordered if you want, as the syntax itself

I recommend reading the ECMA-404 spec instead. It's less ambiguous, and basically says that you can treat the pairs as ordered if you want, as the syntax itself doesn't imbue the order with any meaning: https://www.ecma-international.org/wp-content/uploads/ECMA-404_2nd_edition_december_2017.pdf https://www.ecma-international.org/wp-content/uploads/ECMA-4...