regexper-static/lib/partials/google_analytics.hbs

{{#if gaPropertyId}}
<script>
  if (navigator.doNotTrack !== '1' && window.doNotTrack !== '1') {
    (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
    (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
    m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
    })(window,document,'script','https://www.google-analytics.com/analytics.js','ga');

    ga('create', '{{{gaPropertyId}}}', 'auto');
    ga('send', 'pageview');
  } else {
    console.log('Google Analytics disabled by "Do Not Track"');
  }
</script>
{{/if}}