I prefer languages with a small instruction set, as then you can learn all you can do in the language and hold it in your head. JavaScript used to have a small instruction set, I don't feel it does any longer.
Aside from this I don't know that I see any benefit to these structs, although perhaps that is just the article doing that whole trying to write JavaScript like Java thing that making classes and constructors enabled.
I prefer languages with a small instruction set, as then you can learn all you can do in the language and hold it in your head. JavaScript used to have a small instruction set, I don't feel it does any longer.
Aside from this I don't know that I see any benefit to these structs, although perhaps that is just the article doing that whole trying to write JavaScript like Java thing that making classes and constructors enabled.