|  | library; | 
|  | // | 
|  | // Problems in library: | 
|  | // | 
|  | // pkg/front_end/testcases/general/issue48487b.dart:9:3: Error: The 'enhanced-enums' language feature is disabled for this library. | 
|  | // Try removing the `@dart=` annotation or setting the language version to 2.17 or higher. | 
|  | //   const T.named(); | 
|  | //   ^ | 
|  | // pkg/front_end/testcases/general/issue48487b.dart:5:1: Context: This is the annotation that opts out this library from the 'enhanced-enums' language feature. | 
|  | // // @dart=2.16 | 
|  | // ^^^^^^^^^^^^^ | 
|  | // | 
|  | import self as self; | 
|  | import "dart:core" as core; | 
|  |  | 
|  | class T extends core::_Enum /*isEnum*/  { | 
|  | static const field core::List<self::T> values = invalid-expression "pkg/front_end/testcases/general/issue48487b.dart:8:3: Error: Couldn't find constructor 'T'. | 
|  | t; | 
|  | ^"; | 
|  | enum-element static const field self::T t = invalid-expression "pkg/front_end/testcases/general/issue48487b.dart:8:3: Error: Couldn't find constructor 'T'. | 
|  | t; | 
|  | ^"; | 
|  | const constructor named(core::int #index, core::String #name) → self::T | 
|  | : super core::_Enum::•(#index, #name) | 
|  | ; | 
|  | method _enumToString() → core::String | 
|  | return "T.${this.{core::_Enum::_name}{core::String}}"; | 
|  | } | 
|  | static method main() → void {} |