[jynelson]

I think I disagree that you can have a Rust program that doesn't use all these concepts, at least outside of very basic tutorial material. You will very very quickly run into compiler errors that mention them the second you write your own program.

> The author conveniently left out all of the things needed to understand that JavaScript version, including async/await, promises, modules, string interpolation, [...] not to mention the runtime that is running this, etc.

These are also left out of the Rust version.