Generation failed: Unknown type GenericFunctionTypeElementImpl

[littlen101]

Hello, I've been experiencing this error for not only my projects but the demo app as well and wanted to know of any fixes.

dartdocLog.txt

I am trying to get into using it so the only steps to recreate are :
1. Use command 'dartdoc' at the root of a flutter project

[jcollins-g]

Hi @littlen101, this error is associated with very old versions of dartdoc which don't have the fix for #1495. Please run:

dartdoc --version

If dartdoc version is < 0.13.0+3 you will definitely have this problem, but there are a lot of other flutter related fixes that have been put in so I recommend using the newest version compatible with your version of flutter. Newer versions of dartdoc come with newer versions of the SDK, but you can also install them with pub global activate dartdoc.

[littlen101]

Thank you for that. The command ran and said that it downloaded and activated dartdoc 0.15.1 but every time I run the version check it still says 0.9.14. Any recommendations

I tried running from admin console but that failed as well to update

[jcollins-g]

Hi @littlen101 ,

Try following the instructions here: https://www.dartlang.org/tools/pub/cmd/pub-global#running-a-script to update your path. Also note a version of dartdoc is shipped with the SDK and if that is in your path before the bin directory for pub, that will take precedence.

I also suggest that you use the version of the Dart SDK included with Flutter (bin/cache/dart-sdk under your FLUTTER_ROOT) as that will produce better results for documenting Flutter packages -- you'll be able to use a more modern dartdoc with the newer Dart SDK.

[littlen101]

Got it to work thanks again.

Also dartdoc still requires there be a version number in your pubspec.yaml file for future readers that fix this error and get another.