.js?features=es6"></script>
  <script type="text/javascript" id="MathJax-script" async
    src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-chtml.js">
  </script>
{% endif %}

{% if jekyll.environment == 'production' %}
  <!-- PWA -->
  <script defer src="{{ '/app.js' | relative_url }}"></script>

  <!-- GA -->
  {% if site.google_analytics.id %}
    {% include google-analytics.html %}
  {% endif %}

{% endif %}
