Failed to migrate away from `@import`

[SukkaW]

$ sass-migrator module --migrate-deps src/styles/style.sass

Unhandled exception:
Bad state: Can't access _configuredVariables when not visiting a dependency.
#0      _ModuleMigrationVisitor._configuredVariables (package:sass_migrator/src/migrators/module.dart:190)
#1      _ModuleMigrationVisitor.visitVariableDeclaration (package:sass_migrator/src/migrators/module.dart:1185)
#2      VariableDeclaration.accept (package:sass/src/ast/sass/statement/variable_declaration.dart:87)
#3      RecursiveStatementVisitor.visitChildren (package:sass/src/visitor/recursive_statement.dart:107)
#4      ScopedAstVisitor.visitChildren.visit (package:sass_migrator/src/util/scoped_ast_visitor.dart:54)
#5      ScopedAstVisitor.visitChildren (package:sass_migrator/src/util/scoped_ast_visitor.dart:57)
#6      _ModuleMigrationVisitor.visitChildren (package:sass_migrator/src/migrators/module.dart:607)
#7      ScopedAstVisitor.visitStylesheet (package:sass_migrator/src/util/scoped_ast_visitor.dart:44)
#8      MigrationVisitor.visitStylesheet (package:sass_migrator/src/migration_visitor.dart:91)
#9      _ModuleMigrationVisitor.visitStylesheet (package:sass_migrator/src/migrators/module.dart:430)
#10     MigrationVisitor.run (package:sass_migrator/src/migration_visitor.dart:75)
#11     _ModuleMigrationVisitor.run (package:sass_migrator/src/migrators/module.dart:239)
#12     ModuleMigrator.migrateFile (package:sass_migrator/src/migrators/module.dart:104)
#13     Migrator.run (package:sass_migrator/src/migrator.dart:92)
#14     ModuleMigrator.run (package:sass_migrator/src/migrators/module.dart:64)
#15     CommandRunner.runCommand (package:args/command_runner.dart:212)
#16     MigratorRunner.execute (package:sass_migrator/src/runner.dart:95)
#17     main (file:///private/tmp/migrator-20250330-6741-sk81li/migrator-2.3.1/bin/sass_migrator.dart:17)
#18     _delayEntrypointInvocation.<anonymous closure> (dart:isolate-patch/isolate_patch.dart:313)
#19     _RawReceivePort._handleMessage (dart:isolate-patch/isolate_patch.dart:194)

[jathak]

Could you provide the Sass code being used here, or a reproduction that emits the same error? It shouldn't be possible for the migrator to get into this state, so I need to know what stylesheets are causing it to fix it.

[SukkaW]

Could you provide the Sass code being used here, or a reproduction that emits the same error? It shouldn't be possible for the migrator to get into this state, so I need to know what stylesheets are causing it to fix it.

Lemme see if I can extract a minimum reproduction!

[paskal]

I have reproduction:

# git clone https://github.com/xianmin/hugo-theme-jane.git
# cd hugo-theme-jane
# git checkout 8f882af2a8dc2fffdd3a617f527685815e85541e
# npm install -g sass-migrator
# sass-migrator module --migrate-deps assets/sass/jane.scss
/opt/homebrew/lib/node_modules/sass-migrator/sass-migrator.dart.js:5650
      throw error;
      ^

Bad state: Can't access _configuredVariables when not visiting a dependency.
    at Object.wrapException (/opt/homebrew/lib/node_modules/sass-migrator/sass-migrator.dart.js:1804:43)
    at Object.throwExpression (/opt/homebrew/lib/node_modules/sass-migrator/sass-migrator.dart.js:1823:15)
    at _ModuleMigrationVisitor.get$_configuredVariables (/opt/homebrew/lib/node_modules/sass-migrator/sass-migrator.dart.js:41823:29)
    at _ModuleMigrationVisitor.visitVariableDeclaration$1 (/opt/homebrew/lib/node_modules/sass-migrator/sass-migrator.dart.js:42640:15)
    at VariableDeclaration.accept$1$1 (/opt/homebrew/lib/node_modules/sass-migrator/sass-migrator.dart.js:27078:22)
    at VariableDeclaration.accept$1 (/opt/homebrew/lib/node_modules/sass-migrator/sass-migrator.dart.js:27081:19)
    at _ModuleMigrationVisitor.visitChildren$1 (/opt/homebrew/lib/node_modules/sass-migrator/sass-migrator.dart.js:39292:26)
    at ScopedAstVisitor_visitChildren_visit.call$0 (/opt/homebrew/lib/node_modules/sass-migrator/sass-migrator.dart.js:44432:18)
    at _ModuleMigrationVisitor.visitChildren$2$withScope (/opt/homebrew/lib/node_modules/sass-migrator/sass-migrator.dart.js:44395:49)
    at _ModuleMigrationVisitor.visitChildren$2$withScope (/opt/homebrew/lib/node_modules/sass-migrator/sass-migrator.dart.js:42132:13) {
  dartException: <ref *1> StateError {
    message: "Can't access _configuredVariables when not visiting a dependency.",
    '$thrownJsError': <ref *2> Bad state: Can't access _configuredVariables when not visiting a dependency.
        at Object.wrapException (/opt/homebrew/lib/node_modules/sass-migrator/sass-migrator.dart.js:1804:43)
        at Object.throwExpression (/opt/homebrew/lib/node_modules/sass-migrator/sass-migrator.dart.js:1823:15)
        at _ModuleMigrationVisitor.get$_configuredVariables (/opt/homebrew/lib/node_modules/sass-migrator/sass-migrator.dart.js:41823:29)
        at _ModuleMigrationVisitor.visitVariableDeclaration$1 (/opt/homebrew/lib/node_modules/sass-migrator/sass-migrator.dart.js:42640:15)
        at VariableDeclaration.accept$1$1 (/opt/homebrew/lib/node_modules/sass-migrator/sass-migrator.dart.js:27078:22)
        at VariableDeclaration.accept$1 (/opt/homebrew/lib/node_modules/sass-migrator/sass-migrator.dart.js:27081:19)
        at _ModuleMigrationVisitor.visitChildren$1 (/opt/homebrew/lib/node_modules/sass-migrator/sass-migrator.dart.js:39292:26)
        at ScopedAstVisitor_visitChildren_visit.call$0 (/opt/homebrew/lib/node_modules/sass-migrator/sass-migrator.dart.js:44432:18)
        at _ModuleMigrationVisitor.visitChildren$2$withScope (/opt/homebrew/lib/node_modules/sass-migrator/sass-migrator.dart.js:44395:49)
        at _ModuleMigrationVisitor.visitChildren$2$withScope (/opt/homebrew/lib/node_modules/sass-migrator/sass-migrator.dart.js:42132:13) {
      dartException: [Circular *1],
      '$cachedTrace': _StackTrace {
        _exception: [Circular *2],
        _trace: "Bad state: Can't access _configuredVariables when not visiting a dependency.\n" +
          '    at Object.wrapException (/opt/homebrew/lib/node_modules/sass-migrator/sass-migrator.dart.js:1804:43)\n' +
          '    at Object.throwExpression (/opt/homebrew/lib/node_modules/sass-migrator/sass-migrator.dart.js:1823:15)\n' +
          '    at _ModuleMigrationVisitor.get$_configuredVariables (/opt/homebrew/lib/node_modules/sass-migrator/sass-migrator.dart.js:41823:29)\n' +
          '    at _ModuleMigrationVisitor.visitVariableDeclaration$1 (/opt/homebrew/lib/node_modules/sass-migrator/sass-migrator.dart.js:42640:15)\n' +
          '    at VariableDeclaration.accept$1$1 (/opt/homebrew/lib/node_modules/sass-migrator/sass-migrator.dart.js:27078:22)\n' +
          '    at VariableDeclaration.accept$1 (/opt/homebrew/lib/node_modules/sass-migrator/sass-migrator.dart.js:27081:19)\n' +
          '    at _ModuleMigrationVisitor.visitChildren$1 (/opt/homebrew/lib/node_modules/sass-migrator/sass-migrator.dart.js:39292:26)\n' +
          '    at ScopedAstVisitor_visitChildren_visit.call$0 (/opt/homebrew/lib/node_modules/sass-migrator/sass-migrator.dart.js:44432:18)\n' +
          '    at _ModuleMigrationVisitor.visitChildren$2$withScope (/opt/homebrew/lib/node_modules/sass-migrator/sass-migrator.dart.js:44395:49)\n' +
          '    at _ModuleMigrationVisitor.visitChildren$2$withScope (/opt/homebrew/lib/node_modules/sass-migrator/sass-migrator.dart.js:42132:13)'
      }
    }
  }
}

Node.js v22.15.0

# sass-migrator --version
2.3.2 compiled with dart2js 3.7.3

# sass --version
1.87.0