AfterAales/node_modules/hexo-theme-landscape/layout/_partial/google-analytics.ejs

<% if (theme.google_analytics){ %>
<!-- Global site tag (gtag.js) - Google Analytics -->
<script async src="https://www.googletagmanager.com/gtag/js?id=<%= theme.google_analytics %>"></script>
<script>
  window.dataLayer = window.dataLayer || [];
  function gtag(){dataLayer.push(arguments);}
  gtag('js', new Date());

  gtag('config', '<%= theme.google_analytics %>');
</script>
<!-- End Google Analytics -->
<% } %>