app/javascript/packs/matomo.js
! function () {
var mtmDataTag = document.querySelector('[data-matomo-host]')
var mtmHost = mtmDataTag.dataset.matomoHost
var mtmSiteId = mtmDataTag.dataset.matomoSiteId
var _paq = window._paq = window._paq || [];
/* tracker methods like "setCustomDimension" should be called before "trackPageView" */
_paq.push(['trackPageView']);
_paq.push(['enableLinkTracking']);
(function () {
var u = "//" + mtmHost + "/";
_paq.push(['setTrackerUrl', u + 'matomo.php']);
_paq.push(['setSiteId', mtmSiteId]);
var d = document,
g = d.createElement('script'),
s = d.getElementsByTagName('script')[0];
g.async = true;
g.src = u + 'matomo.js';
s.parentNode.insertBefore(g, s);
})();
}()