anchor.diff:          VariableAst,
           TextAst,
           templateVisitAll;
  -import "compile_element.dart" show CompileElement, CompileNode;
  -import "compile_method.dart";
  -import "compile_view.dart";
  -import "constants.dart"
  +import 'compile_element.dart' show CompileElement, CompileNode;
  +import 'compile_method.dart';
  +import 'compile_view.dart';
  +import 'constants.dart'
       show
           appViewRootElementName,
           createEnumExpression,
  
positive.code: import 'parse_utils.dart';
  import 'perf_profiler.dart';
  import 'property_binder.dart';
  import "view_compiler_utils.dart"
      show
          getViewFactoryName,
          createFlatArray,
  
negative.code: import 'package:logging/logging.dart';
  import 'package:source_span/source_span.dart';
  import 'package:angular/src/compiler/output/output_ast.dart';
  import 'package:angular/src/core/change_detection/change_detection.dart'
      show
          ChangeDetectorState,
          ChangeDetectionStrategy,
          isDefaultChangeDetectionStrategy;
  import 'package:angular/src/core/linker/app_view_utils.dart'
      show NAMESPACE_URIS;
  import 'package:angular/src/core/linker/view_type.dart';
  import 'package:angular/src/core/metadata/view.dart' show ViewEncapsulation;
  import 'package:angular_compiler/angular_compiler.dart';
  
  import '../compile_metadata.dart'
      show CompileIdentifierMetadata, CompileDirectiveMetadata;
  import '../expression_parser/parser.dart' show Parser;
  import '../identifiers.dart' show Identifiers, identifierToken;
  import '../output/output_ast.dart' as o;
  import '../provider_parser.dart' show ngIfTokenMetadata, ngForTokenMetadata;
  import '../style_compiler.dart' show StylesCompileResult;
  import '../template_ast.dart'
      show
          AttrAst,
          BoundDirectivePropertyAst,
  