anchor.diff:  
   @JS()
   @anonymous
  +@staticInterop
   abstract class CkFilterOptions {}
   
   @JS()
   @anonymous
  +@staticInterop
   class _CkCubicFilterOptions extends CkFilterOptions {
  -  external double get B;
  -  external double get C;
  -
     external factory _CkCubicFilterOptions({double B, double C});
   }
   
   @JS()
   @anonymous
  +@staticInterop
   class _CkTransformFilterOptions extends CkFilterOptions {
  -  external SkFilterMode get filter;
  -  external SkMipmapMode get mipmap;
  -
     external factory _CkTransformFilterOptions(
         {SkFilterMode filter, SkMipmapMode mipmap});
   }
  
positive.code: final SkFloat32List _sharedSkColor3 = mallocFloat32List(4);
  
  @JS('window.flutterCanvasKit.Path')
  class SkPath {
    external SkPath([SkPath? other]);
    external void setFillType(SkFillType fillType);
    external void addArc(
      Float32List oval,
  
negative.code: 
  @JS()
  @anonymous
  @staticInterop
  class SkColorFilter {}
  
  extension SkColorFilterExtension on SkColorFilter {
    external void delete();
  }
  
  @JS()
  @staticInterop
  class SkImageFilterNamespace {}
  
  extension SkImageFilterNamespaceExtension on SkImageFilterNamespace {
    external SkImageFilter MakeBlur(
      double sigmaX,
      double sigmaY,
  