Oh, good point. I forgot about var not getting mad at redeclaration. So the default TS implementation will merge an existing object with the newly defined field

Oh, good point. I forgot about var not getting mad at redeclaration. So the default TS implementation will merge an existing object with the newly defined fields. I'm too lazy to check, but I wonder what happens if MyType already exists and is a scalar, like a number... I think I was still accidentally correct in saying that's what we'd write because who the hell actually WANTS the default behavior? :p