From 10e00a99a4bc0e726b0eb8935452a2ed19194d29 Mon Sep 17 00:00:00 2001
From: Martin Olsson <martin@minimum.se>
Date: Sat, 8 Oct 2022 11:33:27 +0200
Subject: [PATCH] Quickfix to avoid DOMException constructor (not available on
 MSIE 11)

---
 src/abortcontroller.js | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/src/abortcontroller.js b/src/abortcontroller.js
index 13f4b6f..c470bb7 100644
--- a/src/abortcontroller.js
+++ b/src/abortcontroller.js
@@ -114,11 +114,18 @@ export class AbortController {
         signalReason = new Error('This operation was aborted');
         signalReason.name = 'AbortError';
       } else {
-        signalReason = new DOMException('signal is aborted without reason');
+        try {
+          signalReason = new DOMException('signal is aborted without reason');
+        } catch (err) {
+          // IE 11 does not support calling the DOMException constructor, use a
+          // regular error object on it instead.
+          signalReason = new Error('This operation was aborted');
+          signalReason.name = 'AbortError';
+        }
       }
     }
     this.signal.reason = signalReason;
-    
+
     this.signal.dispatchEvent(event);
   }
   toString() {