Breaks with analyzer 5.0.0 about dart_sealed

[ride4sun]

I am just wanted to migrade from super_enum and it seems like I can not get this library to run the generator successfully

[INFO] Precompiling build script......
[WARNING] /C:/Users/ride4/AppData/Roaming/Pub/Cache/hosted/pub.dartlang.org/sealed_generators-1.13.0/lib/src/manifest/manifest_reader_builder.dart:40:12: Error: The getter '
isEnum' isn't defined for the class 'ClassElement'.

• 'ClassElement' is from 'package:analyzer/dart/element/element.dart' ('/C:/Users/ride4/AppData/Roaming/Pub/Cache/hosted/pub.dartlang.org/analyzer-5.2.0/lib/dart/element/el
  ement.dart').
  Try correcting the name to the name of an existing getter, or defining a getter or field named 'isEnum'.
  !cls.isEnum && !cls.isMixin && !cls.isMixinApplication,
  ^^^^^^
  /C:/Users/ride4/AppData/Roaming/Pub/Cache/hosted/pub.dartlang.org/sealed_generators-1.13.0/lib/src/manifest/manifest_reader_builder.dart:40:27: Error: The getter 'isMixin' i
  sn't defined for the class 'ClassElement'.
• 'ClassElement' is from 'package:analyzer/dart/element/element.dart' ('/C:/Users/ride4/AppData/Roaming/Pub/Cache/hosted/pub.dartlang.org/analyzer-5.2.0/lib/dart/element/el
  ement.dart').
  Try correcting the name to the name of an existing getter, or defining a getter or field named 'isMixin'.

[ilyachange]

Same. Waiting for update...