[tomtheelder]

Many people (myself included) have never meaningfully used the OOP elements of JS you are referring to. The approaches listed above are common JS patterns and ones that I and I think most JS devs have used extensively.

However, they don't really solve any of the problems that Elm sets out to try and tackle. Do you have any examples?

Also these patterns certainly do not make any other languages obsolete, and as far as I'm concerned it doesn't solve _any_ of the problems with JS that people complain about.