upgrades core to 8.4.2

core/modules/statistics/statistics.js

@@ -1,12 +1,11 @@
 /**
- * @file
- * Statistics functionality.
- */
+* DO NOT EDIT THIS FILE.
+* See the following change record for more information,
+* https://www.drupal.org/node/2815083
+* @preserve
+**/
 
 (function ($, Drupal, drupalSettings) {
-
-  'use strict';
-
   $(document).ready(function () {
     $.ajax({
       type: 'POST',
@@ -15,4 +14,4 @@
       data: drupalSettings.statistics.data
     });
   });
-})(jQuery, Drupal, drupalSettings);
+})(jQuery, Drupal, drupalSettings);