Function buildFakeIframeWithStack

packages/sdk/src/adapters/iframe.test.ts:647–662

(stack: Array<FakeEl | FakeHTMLImageElement>)

// buildFakeIframeWithStack accepts FakeEl or FakeHTMLImageElement.

function buildFakeIframeWithStack(stack: Array<FakeEl | FakeHTMLImageElement>) {
  return {
    contentDocument: {
      elementsFromPoint(_x: number, _y: number) {
        return stack;
      },
    },
    contentWindow: {
      // Supply our stub class so `candidate instanceof win.HTMLImageElement` works
      HTMLImageElement: FakeHTMLImageElement,
      getComputedStyle(_el: Element) {
        return { opacity: "1" } as CSSStyleDeclaration;
      },
    },
  } as unknown as HTMLIFrameElement;
}

// ─── OffscreenCanvas stub helpers ────────────────────────────────────────────