redefine closest func

com.twin.app.shoptime/src/index.js

@@ -13,6 +13,18 @@ let appElement = (
 );
 
 if (typeof window === "object") {
+  if (!window.Element.prototype.closest) {
+    window.Element.prototype.closest = function(selector) {
+      var element = this;
+      while (element) {
+        if (element.matches(selector)) {
+          return element;
+        }
+        element = element.parentElement;
+      }
+      return null;
+    };
+  }
   window.store = store;
 
   render(appElement, document.getElementById("root"));