10/10 points: Provide a valid pubspec.yaml

5/5 points: Provide a valid README.md

5/5 points: Provide a valid CHANGELOG.md

10/10 points: Use an OSI-approved license

Detected license: MIT.

10/10 points: 20% or more of the public API has dartdoc comments

141 out of 261 API elements (54.0 %) have documentation comments.

Some symbols that are missing documentation: chess_vectors_flutter, chessboard_model, chessboard_model.ChessboardModel.ChessboardModel.new, chessboard_model.ChessboardModel.flipBoardNotifier, chessboard_ui.

10/10 points: Package has an example

0/20 points: Supports 0 of 6 possible platforms (iOS, Android, Web, Windows, macOS, Linux)

0/50 points: code has no errors, warnings, lints, or formatting issues

Found 34 issues. Showing the first 2:

   ╷
70 │                 color: backgroundColor ?? Theme.of(context).backgroundColor,
   │                                                             ^^^^^^^^^^^^^^^
   ╵

   ╷
54 │             if (scheduler != null) {
   │                           ^^^^^^^
   ╵

0/10 points: All of the package dependencies are supported in the latest version

To reproduce run dart pub outdated --no-dev-dependencies --up-to-date --no-dependency-overrides.

10/10 points: Package supports latest stable Dart and Flutter SDKs

0/20 points: Compatible with dependency constraint lower bounds

downgrade analysis failed failed with 1 error:

• UNDEFINED_GETTER - lib/notation/notation.dart:70:61 - The getter 'backgroundColor' isn't defined for the type 'ThemeData'.

Run flutter pub downgrade and then flutter analyze to reproduce the above problem.

You may run dart pub upgrade --tighten to update your dependency constraints, see dart.dev/go/downgrade-testing for details.