fix: Uncaught TypeError: Illegal invocation when recording incrementa…

…l canvas mutation (rrweb-io#844)
lujinjia · Feb 24, 2022 · 5ae208b · 5ae208b
1 parent f74b7bb
commit 5ae208b
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/packages/rrweb-snapshot/src/utils.ts b/packages/rrweb-snapshot/src/utils.ts
@@ -60,7 +60,8 @@ export function is2DCanvasBlank(canvas: HTMLCanvasElement): boolean {
  // even if we can already tell from the first chunk(s) that
  // the canvas isn't blank
  const pixelBuffer = new Uint32Array(
- originalGetImageData(
+ originalGetImageData.call(
+ ctx,
  x,
  y,
  Math.min(chunkSize, canvas.width - x),