anchor.diff:    return interopContext;
   }
   
  +@Deprecated('6.0.0')
   Map<String, dynamic> _unjsifyContext(InteropContextValue interopContext) {
     // TODO consider using `contextKeys` for this if perf of objectKeys is bad.
     return new Map.fromIterable(_objectKeys(interopContext), value: (key) {
  
positive.code: }
  
  /// The static methods that proxy JS component lifecycle methods to Dart components.
  // TODO: Remove in the 6.0.0 release
  final ReactDartInteropStatics _dartInteropStatics = (() {
    var zone = Zone.current;
  
  
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) {
  