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: BSD-3-Clause.

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

46 out of 49 API elements (93.9 %) have documentation comments.

Some symbols that are missing documentation: render_signed_spacing_flex, signed_spacing_flex, signed_spacing_flex.StackingOrder.

10/10 points: Package has an example

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

• ✓ Android

• ✓ iOS

• ✓ Windows

• ✓ Linux

• ✓ macOS

• ✓ Web

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

     ╷
1034 │     properties.add(EnumProperty<double>('spacing', spacing));
     │                                 ^^^^^^
     ╵

    ╷
303 │     properties.add(EnumProperty<double>('spacing', spacing));
    │                                 ^^^^^^
    ╵

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

No dependencies.

To reproduce run dart pub outdated --no-dev-dependencies --up-to-date --no-dependency-overrides.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 2 errors:

• TYPE_ARGUMENT_NOT_MATCHING_BOUNDS - lib/render_signed_spacing_flex.dart:1034:33 - 'double' doesn't conform to the bound 'Enum?' of the type parameter 'T'.
• TYPE_ARGUMENT_NOT_MATCHING_BOUNDS - lib/signed_spacing_flex.dart:303:33 - 'double' doesn't conform to the bound 'Enum?' of the type parameter 'T'.

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.