{% if jekyll.environment == 'production' and site.production_google_analytics %} {%- assign GA_ID = site.production_google_analytics -%} <script async src=“www.googletagmanager.com/gtag/js?id={{ GA_ID }}”></script> <script>

window.dataLayer = window.dataLayer || [];
function gtag() { dataLayer.push(arguments); }
gtag('js', new Date());
gtag('config', '{{ GA_ID }}');

</script> {% endif %}

{% if jekyll.environment == 'development' and site.development_google_analytics %} {%- assign GA_ID = site.development_google_analytics -%} <script async src=“www.googletagmanager.com/gtag/js?id={{ GA_ID }}”></script> <script>

window.dataLayer = window.dataLayer || [];
function gtag(){dataLayer.push(arguments);}
gtag('js', new Date());
gtag('config', '{{ GA_ID }}');

</script> {% endif %}