SWC still compile even if interfaces are not fully implemented by classes

[ghost]

Well, the title speaks for itself: perhaps I can't find it in docs, but if I have something like this:

interface IDo {
  do(): void;
}

class DoImpl implements IDo {}

No errors are shown on compilation, although I'll get do is not a function error if I'll try to call this function.
Why it is not complaining? Is there any way to enable this behaviour?

[kwonoj]

SWC doesn't have typechecking features, so this is natural since implements keyword works against non-runtime interface.

[ghost]

Oh, ok. Any tips on how to check types before compiling then?