benchmark_at_js.dart

@JS('window.flutter_canvas_kit.BlendMode.Clear.value')
external int get canvasKitBlendModeClear;

@JS('window.flutter_canvas_kit.BlendMode.Src.value')
external int get canvasKitBlendModeSrc;

@JS('window.flutter_canvas_kit.BlendMode.Dst.value')
external int get canvasKitBlendModeDst;

@JS('window.flutter_canvas_kit.BlendMode.SrcOver.value')
external int get canvasKitBlendModeSrcOver;

@JS('window.flutter_canvas_kit.BlendMode.DstOver.value')
external int get canvasKitBlendModeDstOver;

@JS('window.flutter_canvas_kit.BlendMode.SrcIn.value')
external int get canvasKitBlendModeSrcIn;

@JS('window.flutter_canvas_kit.BlendMode.DstIn.value')
external int get canvasKitBlendModeDstIn;

@JS('window.flutter_canvas_kit.BlendMode.SrcOut.value')
external int get canvasKitBlendModeSrcOut;

@JS('window.flutter_canvas_kit.BlendMode.DstOut.value')
external int get canvasKitBlendModeDstOut;

@JS('window.flutter_canvas_kit.BlendMode.SrcATop.value')
external int get canvasKitBlendModeSrcATop;

@JS('window.flutter_canvas_kit.BlendMode.DstATop.value')
external int get canvasKitBlendModeDstATop;

@JS('window.flutter_canvas_kit.BlendMode.Xor.value')
external int get canvasKitBlendModeXor;

@JS('window.flutter_canvas_kit.BlendMode.Plus.value')
external int get canvasKitBlendModePlus;

@JS('window.flutter_canvas_kit.BlendMode.Modulate.value')
external int get canvasKitBlendModeModulate;

@JS('window.flutter_canvas_kit.BlendMode.Screen.value')
external int get canvasKitBlendModeScreen;

@JS('window.flutter_canvas_kit.BlendMode.Overlay.value')
external int get canvasKitBlendModeOverlay;

@JS('window.flutter_canvas_kit.BlendMode.Darken.value')
external int get canvasKitBlendModeDarken;

@JS('window.flutter_canvas_kit.BlendMode.Lighten.value')
external int get canvasKitBlendModeLighten;

@JS('window.flutter_canvas_kit.BlendMode.ColorDodge.value')
external int get canvasKitBlendModeColorDodge;

@JS('window.flutter_canvas_kit.BlendMode.ColorBurn.value')
external int get canvasKitBlendModeColorBurn;

@JS('window.flutter_canvas_kit.BlendMode.HardLight.value')
external int get canvasKitBlendModeHardLight;

@JS('window.flutter_canvas_kit.BlendMode.SoftLight.value')
external int get canvasKitBlendModeSoftLight;

@JS('window.flutter_canvas_kit.BlendMode.Difference.value')
external int get canvasKitBlendModeDifference;

@JS('window.flutter_canvas_kit.BlendMode.Exclusion.value')
external int get canvasKitBlendModeExclusion;

@JS('window.flutter_canvas_kit.BlendMode.Multiply.value')
external int get canvasKitBlendModeMultiply;

@JS('window.flutter_canvas_kit.BlendMode.Hue.value')
external int get canvasKitBlendModeHue;

@JS('window.flutter_canvas_kit.BlendMode.Saturation.value')
external int get canvasKitBlendModeSaturation;

@JS('window.flutter_canvas_kit.BlendMode.Color.value')
external int get canvasKitBlendModeColor;

@JS('window.flutter_canvas_kit.BlendMode.Luminosity.value')
external int get canvasKitBlendModeLuminosity;

typedef int BlendModeGetter();

void benchmarkAtJS() {
  final List<BlendModeGetter> flatGetters = <BlendModeGetter>[
    () => canvasKitBlendModeClear,
    () => canvasKitBlendModeSrc,
    () => canvasKitBlendModeDst,
    () => canvasKitBlendModeSrcOver,
    () => canvasKitBlendModeDstOver,
    () => canvasKitBlendModeSrcIn,
    () => canvasKitBlendModeDstIn,
    () => canvasKitBlendModeSrcOut,
    () => canvasKitBlendModeDstOut,
    () => canvasKitBlendModeSrcATop,
    () => canvasKitBlendModeDstATop,
    () => canvasKitBlendModeXor,
    () => canvasKitBlendModePlus,
    () => canvasKitBlendModeModulate,
    () => canvasKitBlendModeScreen,
    () => canvasKitBlendModeOverlay,
    () => canvasKitBlendModeDarken,
    () => canvasKitBlendModeLighten,
    () => canvasKitBlendModeColorDodge,
    () => canvasKitBlendModeColorBurn,
    () => canvasKitBlendModeHardLight,
    () => canvasKitBlendModeSoftLight,
    () => canvasKitBlendModeDifference,
    () => canvasKitBlendModeExclusion,
    () => canvasKitBlendModeMultiply,
    () => canvasKitBlendModeHue,
    () => canvasKitBlendModeSaturation,
    () => canvasKitBlendModeColor,
    () => canvasKitBlendModeLuminosity,
  ];

  final List<BlendModeGetter> structuredGetters = <BlendModeGetter>[
    () => canvasKit2.BlendMode.Clear.value,
    () => canvasKit2.BlendMode.Src.value,
    () => canvasKit2.BlendMode.Dst.value,
    () => canvasKit2.BlendMode.SrcOver.value,
    () => canvasKit2.BlendMode.DstOver.value,
    () => canvasKit2.BlendMode.SrcIn.value,
    () => canvasKit2.BlendMode.DstIn.value,
    () => canvasKit2.BlendMode.SrcOut.value,
    () => canvasKit2.BlendMode.DstOut.value,
    () => canvasKit2.BlendMode.SrcATop.value,
    () => canvasKit2.BlendMode.DstATop.value,
    () => canvasKit2.BlendMode.Xor.value,
    () => canvasKit2.BlendMode.Plus.value,
    () => canvasKit2.BlendMode.Modulate.value,
    () => canvasKit2.BlendMode.Screen.value,
    () => canvasKit2.BlendMode.Overlay.value,
    () => canvasKit2.BlendMode.Darken.value,
    () => canvasKit2.BlendMode.Lighten.value,
    () => canvasKit2.BlendMode.ColorDodge.value,
    () => canvasKit2.BlendMode.ColorBurn.value,
    () => canvasKit2.BlendMode.HardLight.value,
    () => canvasKit2.BlendMode.SoftLight.value,
    () => canvasKit2.BlendMode.Difference.value,
    () => canvasKit2.BlendMode.Exclusion.value,
    () => canvasKit2.BlendMode.Multiply.value,
    () => canvasKit2.BlendMode.Hue.value,
    () => canvasKit2.BlendMode.Saturation.value,
    () => canvasKit2.BlendMode.Color.value,
    () => canvasKit2.BlendMode.Luminosity.value,
  ];

  final int len = flatGetters.length;

  for (int j = 0; j < 10; j++) {
    print('Benchmarking flat getters');
    final Stopwatch sw = Stopwatch();
    sw.start();
    for (int i = 0; i < 10000; i++) {
      flatGetters[i % len]();
    }
    sw.stop();
    print('Flat getters took ${sw.elapsedMicroseconds}us');
    sw.reset();

    print('Benchmarking structured getters');
    sw.start();
    for (int i = 0; i < 10000; i++) {
      structuredGetters[i % len]();
    }
    sw.stop();
    print('Structured getters took ${sw.elapsedMicroseconds}us');
  }
}