From 3ee3275dc193479729fa58d38cf07c405efdf3b8 Mon Sep 17 00:00:00 2001
From: Raymond Hill <rhill@raymondhill.net>
Date: Sun, 28 May 2023 14:56:31 -0400
Subject: [PATCH] Harden `addEventListener` scriptlet

---
 assets/resources/scriptlets.js | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/assets/resources/scriptlets.js b/assets/resources/scriptlets.js
index 3fd90c491..794c03e4a 100644
--- a/assets/resources/scriptlets.js
+++ b/assets/resources/scriptlets.js
@@ -882,7 +882,13 @@ function addEventListenerDefuser(
                 }
                 if ( matchesBoth ) { return; }
                 return Reflect.apply(target, thisArg, args);
-            }
+            },
+            get(target, prop, receiver) {
+                if ( prop === 'toString' ) {
+                    return target.toString.bind(target);
+                }
+                return Reflect.get(target, prop, receiver);
+            },
         };
         self.EventTarget.prototype.addEventListener = new Proxy(
             self.EventTarget.prototype.addEventListener,