Fix for static interfaces with non-static methods

[zhengbli]

This is for microsoft/TypeScript#4684

[DanielRosenwasser]

You may want to consider using a helper function like

let indentFor dump =
    Pt.increaseIndent()
    dump()
    Pt.decreaseIndent()

Also, "dump" is such an unappealing word. Maybe emit would be better if you're up to making that change in the future 😄

[zhengbli]

Then how should I use indentFor? It seems then I need to wrap up the arbitrary print statements to a function then pass it to the indentFor everytime, which might be verbose as well?

[DanielRosenwasser]

It prevents you from forgetting to decreaseIndent each time. It's only a suggestion.

[zhengbli]

Right. Maybe something like the with keyword or using in C#. I'll look into it

[zhengbli]

BTW the word Dump is because it was called so in the old script :) Emit does sound better