diff --git a/node_modules/jquery/src/var/concat.js b/node_modules/jquery/src/var/concat.js
deleted file mode 100644
index e47c19d..0000000
--- a/node_modules/jquery/src/var/concat.js
+++ /dev/null
@@ -1,7 +0,0 @@
-define( [
-	"./arr"
-], function( arr ) {
-	"use strict";
-
-	return arr.concat;
-} );
diff --git a/node_modules/jquery/src/var/flat.js b/node_modules/jquery/src/var/flat.js
new file mode 100644
index 0000000..86f91a6
--- /dev/null
+++ b/node_modules/jquery/src/var/flat.js
@@ -0,0 +1,16 @@
+define( [
+	"./arr"
+], function( arr ) {
+
+"use strict";
+
+// Support: IE 9 - 11+, Edge 18+, Android Browser 4.0 - 4.3 only, iOS 7 - 11 only, Safari 11 only,
+// Firefox <= 61 only
+// Provide fallback for browsers without Array#flat.
+return arr.flat ? function( array ) {
+	return arr.flat.call( array );
+} : function( array ) {
+	return arr.concat.apply( [], array );
+};
+
+} );