Add .gitlab-ci.yml.

Closes #3496936

js/timezone_detect.js

@@ -5,15 +5,14 @@
  * @todo: Use Drupal.behaviors?
  */
 (function ($, Drupal, drupalSettings, once, jstz) {
-
   Drupal.behaviors.timezoneDetect = {
-    attach: function (context, settings) {
+    attach(context, settings) {
       if (!once('timezone-detect', 'html').length) {
         return;
       }
 
       // Determine timezone from browser client using jsTimezoneDetect library.
-      var tz = jstz.determine().name();
+      let tz = jstz.determine().name();
 
       // Not all timezones returned by jstz are valid in Drupal.
       // @see https://github.com/iansinnott/jstz/issues/23
@@ -22,25 +21,22 @@
       }
 
       if (tz !== drupalSettings.timezone_detect.current_timezone) {
-
         // Post timezone to callback url via ajax.
         $.ajax({
           type: 'POST',
-          url: drupalSettings.path.baseUrl + 'timezone-detect/ajax/set-timezone',
+          url: `${drupalSettings.path.baseUrl}timezone-detect/ajax/set-timezone`,
           dataType: 'json',
           data: {
             timezone: tz,
-            token: drupalSettings.timezone_detect.token
-          }
+            token: drupalSettings.timezone_detect.token,
+          },
         });
 
         // Set any timezone select on this page to the detected timezone.
-        $('select[name="timezone"] option[value="' + tz + '"]')
+        $(`select[name="timezone"] option[value="${tz}"]`)
           .closest('select')
           .val(tz);
       }
-    }
-
+    },
   };
-
 })(jQuery, Drupal, drupalSettings, once, window.jstz);