anchor.diff:    }
   
     js_ast.PropertyAccess _emitJSInterop(NamedNode n) {
  -    var jsName = _getJSNameWithoutGlobal(n);
  +    var jsName = _jsNameWithoutGlobal(n);
       if (jsName == null) return null;
       return _emitJSInteropForGlobal(jsName);
     }
  
positive.code:     if (superMember == null) return const [];
  
      substituteType(DartType t) {
        return _getTypeFromClass(t, superMember.enclosingClass, enclosingClass);
      }
  
      var name = _declareMemberName(member);
  
negative.code:     return false;
    }
  
    String _jsNameWithoutGlobal(NamedNode n) {
      if (!usesJSInterop(n)) return null;
      var libraryJSName = _annotationName(getLibrary(n), isPublicJSAnnotation);
      var jsName = _annotationName(n, isPublicJSAnnotation) ?? getTopLevelName(n);
  