anchor.diff:  
   /// Creates and returns a new [ReactDartComponentFactoryProxy] from the provided [componentFactory]
   /// which produces a new JS [`ReactClass` component class](https://facebook.github.io/react/docs/top-level-api.html#react.createclass).
  -// TODO: Remove in the 6.0.0 release
  +@Deprecated('6.0.0')
   ReactDartComponentFactoryProxy _registerComponent(ComponentFactory componentFactory,
       [Iterable<String> skipMethods = const []]) {
     var componentInstance = componentFactory();
  
positive.code: }
  
  /// Convert bound values to pure value and packed onChange function
  ///
  /// TODO: Remove in 6.0.0 when [Component.bind] is removed.
  _convertBoundValues(Map args) {
    var boundValue = args['value'];
  
  
negative.code: @JS('Object.keys')
  external List<String> _objectKeys(Object object);
  
  @Deprecated('6.0.0')
  InteropContextValue _jsifyContext(Map<String, dynamic> context) {
    var interopContext = new InteropContextValue();
    context.forEach((key, value) {
  