https://www.stoves.co.uk/modules/contrib/google_tag/js/gtm.js?tlg9x2

1(function (drupalSettings) {
2  const dl = drupalSettings.gtm && drupalSettings.gtm.settings.data_layer ? drupalSettings.gtm.settings.data_layer : 'dataLayer';
3  window[dl] = window[dl] || [];
4
5  if (!drupalSettings.gtm) {return;}
6  const config = drupalSettings.gtm;
7
8  window[dl].push({ 'gtm.start': new Date().getTime(), event: 'gtm.js' });
9  const gtmSettings = config.settings;
10  let allowlist = [];
11  let blocklist = [];
12
13  config.tagIds.forEach(function (tagId) {
14    if (gtmSettings.include_classes === true) {
15      allowlist = allowlist.concat(gtmSettings[tagId].allowlist_classes);
16      blocklist = blocklist.concat(gtmSettings[tagId].blocklist_classes);
17    }
18
19    let gtm_environment = '';
20    if (gtmSettings.include_environment === true) {
21      const gtm_auth = gtmSettings[tagId].environment_token ?? '';
22      const gtm_preview =  gtmSettings[tagId].environment_id ?? '';
23      gtm_environment = `&gtm_auth=${gtm_auth}&gtm_preview=${gtm_preview}&gtm_cookies_win=x`;
24    }
25  
26    const script = document.createElement('script');
27    script.async = true;
28    const dLink = dl != 'dataLayer' ? `&l=${dl}` : '';
29    script.src = `https://www.googletagmanager.com/gtm.js?id=${tagId}${gtm_environment}${dLink}`;
30    script.type = 'text/javascript';
31    document.getElementsByTagName('head')[0].appendChild(script);
32  });
33
34    if (allowlist.length || blocklist.length) {
35      window[dl].push({
36        'gtm.allowlist': allowlist,
37        'gtm.blocklist': blocklist,
38      });
39    }
40
41})(drupalSettings);