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pkg/compiler/lib/src/js_emitter/full_emitter/class_emitter.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library dart2js.js_emitter.full_emitter.class_emitter;
 
 import '../../common.dart';
 import '../../common/names.dart' show Names;
 import '../../elements/resolution_types.dart' show ResolutionDartType;
 import '../../deferred_load.dart' show OutputUnit;
@@ skipping 321 matching lines @@
       jsAst.ObjectInitializer initializer =
           staticsBuilder.toObjectInitializer();
       compiler.dumpInfoTask.registerElementAst(classElement, initializer);
       jsAst.Node property = initializer.properties.single;
       compiler.dumpInfoTask.registerElementAst(classElement, property);
       statics.add(property);
     }
 
     // TODO(herhut): Do not grab statics out of the properties.
     ClassBuilder classProperties =
-        emitter.elementDescriptors[fragment].remove(classElement);
+        emitter.classDescriptors[fragment]?.remove(classElement);
     if (classProperties != null) {
       statics.addAll(classProperties.properties);
     }
 
     if (!statics.isEmpty) {
       classBuilder.addProperty(
           namer.staticsPropertyName, // 'static' or its minified name.
           new jsAst.ObjectInitializer(statics, isOneLiner: false));
     }
 
@@ skipping 89 matching lines @@
     String reflectionName = emitter.getReflectionName(selector, name);
     if (reflectionName != null) {
       var reflectable = js(
           backend.mirrorsData.isMemberAccessibleByReflection(member)
               ? '1'
               : '0');
       builder.addPropertyByName('+$reflectionName', reflectable);
     }
   }
 }