From b3f22d3fdd248e333bb091395f4be3f48dc24733 Mon Sep 17 00:00:00 2001
From: Divy Srivastava <dj.srivastava23@gmail.com>
Date: Sat, 10 Jul 2021 19:43:58 +0530
Subject: fix(extensiosn/web): AddEventListenerOptions.signal shouldn't be
 nullable (#11348)

---
 extensions/web/02_event.js | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'extensions/web')

diff --git a/extensions/web/02_event.js b/extensions/web/02_event.js
index 6b2cc2c04..a8dd95dbd 100644
--- a/extensions/web/02_event.js
+++ b/extensions/web/02_event.js
@@ -929,7 +929,10 @@
             this.removeEventListener(type, callback, options);
           });
         }
+      } else if (options?.signal === null) {
+        throw new TypeError("signal must be non-null");
       }
+
       ArrayPrototypePush(listeners[type], { callback, options });
     }
 
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