hexo-theme-icarus/layout/comment/scripts.ejs

<% if (theme.comment.disqus) { %>
    <%- partial('comment/disqus', { script: true }) %>
<% } else if (theme.comment.duoshuo) { %>
    <%- partial('comment/duoshuo', { script: true }) %>
<% } else if (theme.comment.youyan) { %>
    <%- partial('comment/youyan', { script: true }) %>
<% } %>