1 files changed, 15 insertions, 4 deletions
diff --git a/app/assets/javascripts/extensions/element.js.es6 b/app/assets/javascripts/extensions/element.js.es6
index afb2f0d6956..3f12ad9ff9f 100644
--- a/app/assets/javascripts/extensions/element.js.es6
+++ b/app/assets/javascripts/extensions/element.js.es6
@@ -1,9 +1,20 @@
 /* global Element */
-/* eslint-disable consistent-return, max-len */
+/* eslint-disable consistent-return, max-len, no-empty, no-plusplus, func-names */
 
-Element.prototype.matches = Element.prototype.matches || Element.prototype.msMatchesSelector;
-
-Element.prototype.closest = function closest(selector, selectedElement = this) {
+Element.prototype.closest = Element.prototype.closest || function closest(selector, selectedElement = this) {
   if (!selectedElement) return;
   return selectedElement.matches(selector) ? selectedElement : Element.prototype.closest(selector, selectedElement.parentElement);
 };
+
+Element.prototype.matches = Element.prototype.matches ||
+  Element.prototype.matchesSelector ||
+  Element.prototype.mozMatchesSelector ||
+  Element.prototype.msMatchesSelector ||
+  Element.prototype.oMatchesSelector ||
+  Element.prototype.webkitMatchesSelector ||
+  function (s) {
+    const matches = (this.document || this.ownerDocument).querySelectorAll(s);
+    let i = matches.length;
+    while (--i >= 0 && matches.item(i) !== this) {}
+    return i > -1;
+  };