From 358cd0c0965dcd86fdcb3a1291009ad8839fbf68 Mon Sep 17 00:00:00 2001
From: Jonas Jenwald <jonas.jenwald@gmail.com>
Date: Sat, 5 Jan 2019 17:09:44 +0100
Subject: [PATCH] Add a few more `String` polyfills (startsWith, endsWith,
 padStart, padEnd)

---
 src/shared/compatibility.js | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/src/shared/compatibility.js b/src/shared/compatibility.js
index ff99f9b15..01a2ba701 100644
--- a/src/shared/compatibility.js
+++ b/src/shared/compatibility.js
@@ -112,6 +112,24 @@ const hasDOM = typeof window === 'object' && typeof document === 'object';
   };
 })();
 
+// Provides support for String.prototype.startsWith in legacy browsers.
+// Support: IE, Chrome<41
+(function checkStringStartsWith() {
+  if (String.prototype.startsWith) {
+    return;
+  }
+  require('core-js/fn/string/starts-with');
+})();
+
+// Provides support for String.prototype.endsWith in legacy browsers.
+// Support: IE, Chrome<41
+(function checkStringEndsWith() {
+  if (String.prototype.endsWith) {
+    return;
+  }
+  require('core-js/fn/string/ends-with');
+})();
+
 // Provides support for String.prototype.includes in legacy browsers.
 // Support: IE, Chrome<41
 (function checkStringIncludes() {
@@ -223,6 +241,24 @@ const hasDOM = typeof window === 'object' && typeof document === 'object';
 
 } // End of !PDFJSDev.test('CHROME')
 
+// Provides support for String.prototype.padStart in legacy browsers.
+// Support: IE, Chrome<57
+(function checkStringPadStart() {
+  if (String.prototype.padStart) {
+    return;
+  }
+  require('core-js/fn/string/pad-start');
+})();
+
+// Provides support for String.prototype.padEnd in legacy browsers.
+// Support: IE, Chrome<57
+(function checkStringPadEnd() {
+  if (String.prototype.padEnd) {
+    return;
+  }
+  require('core-js/fn/string/pad-end');
+})();
+
 // Provides support for Object.values in legacy browsers.
 // Support: IE, Chrome<54
 (function checkObjectValues() {