https://servicedesk.adult-empire.com/includes/jira/common/autoThemeHandler.js

1/**
2 * This module is responsible for setting the proper theme attribute on the html
3 * when auto (match system) option is set in the user preferences.
4 */
5(function () {
6  "use strict";
7
8  var htmlElement = document.documentElement;
9  if (htmlElement?.getAttribute('data-color-mode-auto') !== null) {
10    var colorMode = htmlElement?.getAttribute('data-color-mode');
11    var modes = ['dark', 'light'];
12    modes.forEach(function (mode) {
13      if (colorMode !== mode && window?.matchMedia?.("(prefers-color-scheme: ".concat(mode, ")")).matches) {
14        htmlElement?.setAttribute('data-color-mode', mode);
15      }
16    });
17  }
18})();