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.

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• Running dart pub outdated failed with the following output:

Because macros >=0.1.0-main.5 <0.1.0-main.6 depends on _macros 0.1.5 from sdk and macros >=0.1.0-main.6 <0.1.0-main.7 depends on _macros 0.1.6 from sdk, macros >=0.1.0-main.5 <0.1.0-main.7 requires _macros 0.1.5 or 0.1.6 from sdk.
And because macros >=0.1.0-main.7 <0.1.1-main.0 depends on _macros 0.1.7 from sdk, macros >=0.1.0-main.5 <0.1.1-main.0 requires _macros 0.1.5 or 0.1.6 or 0.1.7 from sdk.

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

• Could not run dart pub outdated: dart pub get failed:

OUT:
Resolving dependencies...
ERR:
Because macros >=0.1.0-main.5 <0.1.0-main.6 depends on _macros 0.1.5 from sdk and macros >=0.1.0-main.6 <0.1.0-main.7 depends on _macros 0.1.6 from sdk, macros >=0.1.0-main.5 <0.1.0-main.7 requir[...]
And because macros >=0.1.0-main.7 <0.1.1-main.0 depends on _macros 0.1.7 from sdk, macros >=0.1.0-main.5 <0.1.1-main.0 requires _macros 0.1.5 or 0.1.6 or 0.1.7 from sdk.
And because macros >=0.1.1-main.0 <0.1.2-main.0 depends on _macros 0.2.0 from sdk and macros >=0.1.2-main.0 <0.1.2-main.2 depends on _macros 0.3.0 from sdk, macros >=0.1.0-main.5 <0.1.2-main.2 re[...]
And because macros >=0.1.2-main.2 <0.1.2-main.4 depends on _macros 0.3.1 from sdk and macros >=0.1.2-main.4 <0.1.3-main.0 depends on _macros 0.3.2 from sdk, macros >=0.1.0-main.5 <0.1.3-main.0 re[...]
And because json >=0.20.2 depends on macros ^0.1.0-main.5 and macros >=0.1.3-main.0 depends on _macros 0.3.3 from sdk, json >=0.20.2 requires _macros 0.1.5 or 0.1.6 or 0.1.7 or 0.2.0 or 0.3.0 or [...]
So, because _macros from sdk doesn't exist (could not find package _macros in the Dart SDK) and lpncode depends on json ^0.20.2, version solving failed.

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

0/20 points: Compatible with dependency constraint lower bounds

dart pub downgrade failed with:

OUT:
Resolving dependencies...
ERR:
Because macros >=0.1.3-main.0 depends on _macros 0.3.3 from sdk and macros >=0.1.2-main.4 <0.1.3-main.0 depends on _macros 0.3.2 from sdk, macros >=0.1.2-main.4 requires _macros 0.3.2 or 0.3.3 fr[...]
And because macros >=0.1.2-main.2 <0.1.2-main.4 depends on _macros 0.3.1 from sdk, macros >=0.1.2-main.2 requires _macros 0.3.1 or 0.3.2 or 0.3.3 from sdk.
And because macros >=0.1.2-main.0 <0.1.2-main.2 depends on _macros 0.3.0 from sdk and macros >=0.1.1-main.0 <0.1.2-main.0 depends on _macros 0.2.0 from sdk, macros >=0.1.1-main.0 requires _macros[...]
And because macros >=0.1.0-main.7 <0.1.1-main.0 depends on _macros 0.1.7 from sdk and macros >=0.1.0-main.6 <0.1.0-main.7 depends on _macros 0.1.6 from sdk, macros >=0.1.0-main.6 requires _macros[...]
And because json >=0.20.2 depends on macros ^0.1.0-main.5 and macros >=0.1.0-main.5 <0.1.0-main.6 depends on _macros 0.1.5 from sdk, json >=0.20.2 requires _macros 0.1.5 or 0.1.6 or 0.1.7 or 0.2.[...]
So, because _macros from sdk doesn't exist (could not find package _macros in the Dart SDK) and lpncode depends on json ^0.20.2, version solving failed.

Run dart pub downgrade and then dart 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.