Added NULL OP

src/utils/NULL.js

@@ -0,0 +1,23 @@
+/**
+ * @author       Richard Davey <rich@photonstorm.com>
+ * @copyright    2022 Photon Storm Ltd.
+ * @license      {@link https://opensource.org/licenses/MIT|MIT License}
+ */
+
+/**
+ * A NULL OP callback function.
+ *
+ * This function always returns `null`.
+ *
+ * Used internally by Phaser when it's more expensive to determine if a callback exists
+ * than it is to just invoke an empty function.
+ *
+ * @function Phaser.Utils.NULL
+ * @since 3.60.0
+ */
+var NULL = function ()
+{
+    return null;
+};
+
+module.exports = NULL;

src/utils/index.js

@@ -14,6 +14,7 @@ module.exports = {
     Base64: require('./base64/'),
     Objects: require('./object/'),
     String: require('./string/'),
-    NOOP: require('./NOOP')
+    NOOP: require('./NOOP'),
+    NULL: require('./NULL')
 
 };