Discussion on: Boolean - The Good, The Bad and there is no place for the Ugly

[Mihail Malo]

I think you accidentally wrote

type User {
  /* props */
}

instead of

interface User {
  /* props */
}

in most your code examples.

[Pragmatic Maciej]

Nope, it was intentional, but I did an error in syntax. Thanks! There is = sign missing. Will fix it. Thanks again

[Mihail Malo]

That's an option as well.
I tend to use interface whenever possible however, because (at least in the past) there were edge cases where the typechecking is more strict.
Plus, the error messages are also clearer.