toBlob is not a constructor

2021-03-06 11:08:55 +01:00 · 2021-03-06 11:08:55 +01:00 · 0d581403c1
parent 0930928df3
commit 0d581403c1
1 changed files with 5 additions and 0 deletions
--- a/lib/modifiedCanvasAPI.js
+++ b/lib/modifiedCanvasAPI.js
@ -359,6 +359,11 @@
 			object: "HTMLCanvasElement",
 			fakeGenerator: function(checker){
 				return function toBlob(callback){
+					if (this instanceof toBlob){
+						throw new extension.getWrapped(window).TypeError(
+							"HTMLCanvasElement.prototype.toBlob is not a constructor"
+						);
+					}
 					return checkerWrapper(checker, this, arguments, useFakeCanvasCallback);
 				};
 			},