output-dir

The directory where the generated localization classes are written. This option is only relevant if you want to generate the localizations code somewhere else in the Flutter project. You also need to set the synthetic-package flag to false.The app must import the file specified in the output-localization-file option from this directory. If unspecified, this defaults to the same directory as the input directory specified in arb-dir.

template-arb-file

The template arb file that is used as the basis for generating the Dart localization and messages files. The default is app_en.arb.

output-localization-file

The filename for the output localization and localizations delegate classes. The default is app_localizations.dart.

untranslated-messages-file