Detect if DOMException exists via typeof instead of trying to call it…

… and catching the exception which may get thrown fixes JakeChampion/fetch#724
cr313 · Jul 9, 2020 · 1c2fce2 · 1c2fce2
1 parent 3f80edb
commit 1c2fce2
Showing 1 changed file with 2 additions and 3 deletions.
diff --git a/fetch.js b/fetch.js
@@ -455,9 +455,8 @@ Response.redirect = function(url, status) {
 }
 
 export var DOMException = global.DOMException
-try {
-  new DOMException()
-} catch (err) {
+
+if (typeof DOMException !== 'function') {
   DOMException = function(message, name) {
     this.message = message
     this.name = name