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: Apache-2.0.

0/10 points: 20% or more of the public API has dartdoc comments

Dependency resolution failed, unable to run dartdoc.

10/10 points: Package has an example

0/20 points: Platform support detection failed

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

• Running flutter pub outdated failed with the following output:

Note: matcher is pinned to version 0.12.18 by flutter_test from the flutter SDK.
See https://dart.dev/go/sdk-version-pinning for details.

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

• Could not run flutter pub outdated: flutter pub get failed:

OUT:
Resolving dependencies...
ERR:
Note: matcher is pinned to version 0.12.18 by flutter_test from the flutter SDK.
See https://dart.dev/go/sdk-version-pinning for details.


Because test >=1.24.3 <1.25.13 depends on matcher >=0.12.16 <0.12.17 and test >=1.25.13 <1.28.0 depends on matcher >=0.12.16 <0.12.18, test >=1.24.3 <1.28.0 requires matcher >=0.12.16 <0.12.18.
And because every version of flutter_test from sdk depends on matcher 0.12.18, flutter_test from sdk is incompatible with test >=1.24.3 <1.28.0.
And because test >=1.29.0 depends on analyzer >=8.0.0 <11.0.0 and test >=1.27.0 <1.29.0 depends on analyzer >=8.0.0 <10.0.0, if flutter_test from sdk and test >=1.24.3 then analyzer >=8.0.0 <11.0.0.
And because approval_tests >=1.3.3 depends on test ^1.25.0 and approval_tests_flutter depends on analyzer ^7.7.1, flutter_test from sdk is incompatible with approval_tests >=1.3.3.
So, because approval_tests_flutter depends on both approval_tests ^1.3.6 and flutter_test from sdk, version solving failed.

[3 more lines]

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

0/20 points: Compatible with dependency constraint lower bounds

flutter pub downgrade failed with:

OUT:
Resolving dependencies...
ERR:
Note: matcher is pinned to version 0.12.18 by flutter_test from the flutter SDK.
See https://dart.dev/go/sdk-version-pinning for details.


Because test >=1.24.3 <1.25.13 depends on matcher >=0.12.16 <0.12.17 and test >=1.25.13 <1.28.0 depends on matcher >=0.12.16 <0.12.18, test >=1.24.3 <1.28.0 requires matcher >=0.12.16 <0.12.18.
And because every version of flutter_test from sdk depends on matcher 0.12.18, flutter_test from sdk is incompatible with test >=1.24.3 <1.28.0.
And because test >=1.27.0 <1.29.0 depends on analyzer >=8.0.0 <10.0.0 and test >=1.29.0 depends on analyzer >=8.0.0 <11.0.0, if flutter_test from sdk and test >=1.24.3 then analyzer >=8.0.0 <11.0.0.
And because approval_tests >=1.3.3 depends on test ^1.25.0 and approval_tests_flutter depends on analyzer ^7.7.1, flutter_test from sdk is incompatible with approval_tests >=1.3.3.
So, because approval_tests_flutter depends on both approval_tests ^1.3.6 and flutter_test from sdk, version solving failed.

[3 more lines]

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.