elseifDoErrorPos.lean:4:10-4:11: error: application type mismatch
  @ite ?m x
argument
  x
has type
  Nat : Type
but is expected to have type
  Prop : Type
elseifDoErrorPos.lean:7:11-7:14: error: application type mismatch
  pure "a"
argument
  "a"
has type
  String : Type
but is expected to have type
  Nat : Type