From 4c556a39a12881448246d263b639d4db6b84d0cf Mon Sep 17 00:00:00 2001
From: Jeff Avallone <jeff.avallone@gmail.com>
Date: Mon, 22 Jun 2015 22:05:03 -0400
Subject: [PATCH] Tweaking buggy hash detection

This should more appropriately detect the presence of the URL
constructor, and will silently ignore any exceptions (and assume the
hash isn't buggy)
---
 src/js/regexper.js | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/src/js/regexper.js b/src/js/regexper.js
index 3057d81..fea7c4b 100644
--- a/src/js/regexper.js
+++ b/src/js/regexper.js
@@ -87,9 +87,14 @@ export default class Regexper {
   detectBuggyHash() {
     var url;
 
-    if (typeof window.URL !== 'undefined') {
-      url = new URL('http://regexper.com/#%25');
-      this.buggyHash = (url.hash === '#%');
+    if (typeof window.URL === 'function') {
+      try {
+        url = new URL('http://regexper.com/#%25');
+        this.buggyHash = (url.hash === '#%');
+      }
+      catch(e) {
+        this.buggyHash = false;
+      }
     }
   }