dartdoc failed: Top level package requires Flutter but FLUTTER_ROOT environment variable not set dartdoc failed: Top level package requires Flutter but FLUTTER_ROOT environment variable not set dart dart

dartdoc failed: Top level package requires Flutter but FLUTTER_ROOT environment variable not set


try running flutter pub global run dartdoc:dartdoc instead


If you wish to generate API documentation locally on your development machine, use the following commands:

  1. Change directory to the location of your package:
cd ~/dev/mypackage  
  1. Tell the documentation tool where the Flutter SDK is located (change the following commands to reflect where you placed it):
export FLUTTER_ROOT=~/dev/flutter  # on macOS or Linux  set FLUTTER_ROOT=~/dev/flutter     # on Windows   
  1. Run the dartdoc tool (included as part of the Flutter SDK), as follows:
$FLUTTER_ROOT/bin/cache/dart-sdk/bin/dartdoc   # on macOS or Linux  %FLUTTER_ROOT%\bin\cache\dart-sdk\bin\dartdoc   # on Windows

link https://flutter.dev/docs/development/packages-and-plugins/developing-packages