|  | library; | 
|  | // | 
|  | // Problems in library: | 
|  | // | 
|  | // pkg/front_end/testcases/general/issue47728_2.dart:5:13: Error: Expected a type, but got ';'. | 
|  | // typedef A = ; | 
|  | //             ^ | 
|  | // | 
|  | // pkg/front_end/testcases/general/issue47728_2.dart:5:11: Error: Can't create typedef from non-type. | 
|  | // typedef A = ; | 
|  | //           ^ | 
|  | // | 
|  | import self as self; | 
|  | import "dart:core" as core; | 
|  |  | 
|  | typedef A = invalid-type; | 
|  | abstract class B extends core::Object /*isMixinDeclaration*/  { | 
|  | } | 
|  | class C = core::Object with self::B { | 
|  | synthetic constructor •() → self::C | 
|  | : super core::Object::•() | 
|  | ; | 
|  | } | 
|  | static method main() → dynamic {} |