From b4263aa3ecf41a857111d08c56fcfcb8b58cba46 Mon Sep 17 00:00:00 2001
From: Martin Carlberg <martin@carlberg.org>
Date: Mon, 26 Jun 2017 15:50:08 +0200
Subject: [PATCH] =?UTF-8?q?New:=20Make=20sure=20we=20can=20use=20String=20?=
 =?UTF-8?q?function=20=E2=80=99startsWith=E2=80=99=20and=20=E2=80=99endsWi?=
 =?UTF-8?q?th=E2=80=99=20even=20if=20an=20older=20browser=20or=20Javascrip?=
 =?UTF-8?q?t=20engine=20is=20used.?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 Objective-J/OldBrowserCompatibility.js | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/Objective-J/OldBrowserCompatibility.js b/Objective-J/OldBrowserCompatibility.js
index cd3d30517..d4e43b937 100644
--- a/Objective-J/OldBrowserCompatibility.js
+++ b/Objective-J/OldBrowserCompatibility.js
@@ -115,3 +115,24 @@ if (!Array.prototype.indexOf)
         return -1;
     };
 }
+
+// ECMAScript 6 has added this. It is copied from https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String
+if (!String.prototype.startsWith) {
+    String.prototype.startsWith = function(searchString, position){
+      position = position || 0;
+      return this.substr(position, searchString.length) === searchString;
+  };
+}
+
+// ECMAScript 6 has added this. It is copied from https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String
+if (!String.prototype.endsWith) {
+  String.prototype.endsWith = function(searchString, position) {
+      var subjectString = this.toString();
+      if (typeof position !== 'number' || !isFinite(position) || Math.floor(position) !== position || position > subjectString.length) {
+        position = subjectString.length;
+      }
+      position -= searchString.length;
+      var lastIndex = subjectString.indexOf(searchString, position);
+      return lastIndex !== -1 && lastIndex === position;
+  };
+};
\ No newline at end of file