https://www.nwo.nl/modules/contrib/google_tag/js/gtm.js?tm4ib2

1const dl = drupalSettings.gtm ? drupalSettings.gtm.settings.data_layer : 'dataLayer';
2window[dl] = window[dl] || [];
3
4// Define the gtag function for this scope.
5function gtag(){window[dl].push(arguments);}
6
7(function (drupalSettings) {
8  if (!drupalSettings.gtm) {return;}
9  const config = drupalSettings.gtm;
10
11  // Setting default consent before gtm.js
12  // Ref: https://developers.google.com/tag-platform/security/concepts/consent-mode#consent-types
13  if (config.consentMode === true) {
14    gtag('consent', 'default', {
15      ad_personalization: 'denied',
16      ad_storage: 'denied',
17      ad_user_data: 'denied',
18      analytics_storage: 'denied',
19      functionality_storage: 'denied',
20      personalization_storage: 'denied',
21      security_storage: 'denied',
22      wait_for_update: 500,
23    });
24  }
25
26  window[dl].push({ 'gtm.start': new Date().getTime(), event: 'gtm.js' });
27  const gtmSettings = config.settings;
28  if (gtmSettings.include_classes === true) {
29    window[dl].push({
30      'gtm.allowlist': gtmSettings.allowlist_classes ?? [],
31      'gtm.blocklist': gtmSettings.blocklist_classes ?? [],
32    });
33  }
34
35  let gtm_environment = '';
36  if (gtmSettings.include_environment === true) {
37    const gtm_auth = gtmSettings.environment_token ?? '';
38    const gtm_preview = gtmSettings.environment_id ?? '';
39    gtm_environment = `&gtm_auth=${gtm_auth}&gtm_preview=${gtm_preview}&gtm_cookies_win=x`;
40  }
41  config.tagIds.forEach(function (tagId) {
42    const script = document.createElement('script');
43    script.async = true;
44    const dLink = dl != 'dataLayer' ? `&l=${dl}` : '';
45    script.src = `https://www.googletagmanager.com/gtm.js?id=${tagId}${gtm_environment}${dLink}`;
46    script.type = 'text/javascript';
47    document.getElementsByTagName('head')[0].appendChild(script);
48  });
49})(drupalSettings);