Compiler generates invalid javascript

[kika]

Steps to reproduce:

1. go to https://dartpad.dev/
2. Create a Flutter project (pure Dart will work too, but Flutter is just visually more obvious)
3. Click "Run", see "Hello, world!"
4. Paste the following code anywhere where syntactically appropriate

   enum BrushType {
   solid('Solid', null),  // Default brush
   brush1('Chisel', 'brush-1.png'),
   brush2('Flat','brush-2.png'),
   ;
   final String name;
   final String? asset;
   const BrushType(this.name, this.asset);
   }

5. Click "Run"
6. Oops.
7. Open the browser devtools console and observe cryptic Uncaught SyntaxError: Duplicate parameter name not allowed in this context

During real Flutter development no diagnostic is ever produced anywhere besides the browser console, the flutter run -d chrome just sits stuck in "waiting for connection from debug service".

I'm using latest stable Flutter (3.0.5) and dartpad uses as of this writing 2.17.6

Not sure if related: https://github.com/dart-lang/sdk/issues/43362

[kika]

As in the linked issue, seems to be isolated to dartdevc (i.e. flutter run in my case). Building with flutter build doesn't result in any issues.

[kika]

Workaround: change final String name to final String nom (and constructor argument accordingly). So don't use name name. Chris Null sends his best wishes.

[nshahan]

@kika Thanks for the report. This has been fixed in the main branch 539cccd8234ee10fddca244d9855ce0e0e5d8c45 and will rollout with the next stable release.