openAgent

1import { GlobalRegistrator } from "@happy-dom/global-registrator"
2 
3GlobalRegistrator.register()
4 
5const originalGetContext = HTMLCanvasElement.prototype.getContext
6// @ts-expect-error - we're overriding with a simplified mock
7HTMLCanvasElement.prototype.getContext = function (contextType: string, _options?: unknown) {
8  if (contextType === "2d") {
9    return {
10      canvas: this,
11      fillStyle: "#000000",
12      strokeStyle: "#000000",
13      font: "12px monospace",
14      textAlign: "start",
15      textBaseline: "alphabetic",
16      globalAlpha: 1,
17      globalCompositeOperation: "source-over",
18      imageSmoothingEnabled: true,
19      lineWidth: 1,
20      lineCap: "butt",
21      lineJoin: "miter",
22      miterLimit: 10,
23      shadowBlur: 0,
24      shadowColor: "rgba(0, 0, 0, 0)",
25      shadowOffsetX: 0,
26      shadowOffsetY: 0,
27      fillRect: () => {},
28      strokeRect: () => {},
29      clearRect: () => {},
30      fillText: () => {},
31      strokeText: () => {},
32      measureText: (text: string) => ({ width: text.length * 8 }),
33      drawImage: () => {},
34      save: () => {},
35      restore: () => {},
36      scale: () => {},
37      rotate: () => {},
38      translate: () => {},
39      transform: () => {},
40      setTransform: () => {},
41      resetTransform: () => {},
42      createLinearGradient: () => ({ addColorStop: () => {} }),
43      createRadialGradient: () => ({ addColorStop: () => {} }),
44      createPattern: () => null,
45      beginPath: () => {},
46      closePath: () => {},
47      moveTo: () => {},
48      lineTo: () => {},
49      bezierCurveTo: () => {},
50      quadraticCurveTo: () => {},
51      arc: () => {},
52      arcTo: () => {},
53      ellipse: () => {},
54      rect: () => {},
55      fill: () => {},
56      stroke: () => {},
57      clip: () => {},
58      isPointInPath: () => false,
59      isPointInStroke: () => false,
60      getTransform: () => ({}),
61      getImageData: () => ({
62        data: new Uint8ClampedArray(0),
63        width: 0,
64        height: 0,
65      }),
66      putImageData: () => {},
67      createImageData: () => ({
68        data: new Uint8ClampedArray(0),
69        width: 0,
70        height: 0,
71      }),
72    } as unknown as CanvasRenderingContext2D
73  }
74  return originalGetContext.call(this, contextType as "2d", _options)
75}
76