hugo-theme-hilfe/layouts/shortcodes/toc-tree.html

{{ $tocLevels := default (default 6 .Site.Params.GeekdocToC) .Page.Params.GeekdocToC }}

{{ if $tocLevels }}
  <div class="gdoc-toc gdoc-toc__level--{{$tocLevels}}">
    {{ template "toc-tree" dict "sect" .Page.Pages }}
  </div>
{{ end }}

<!-- templates -->
{{ define "toc-tree" }}
  <ul>
    {{ range .sect.GroupBy "Weight" }}
      {{ range .ByTitle }}
      {{ if not .Params.geekdocHidden }}
      <li>
      {{ if or .Content .Params.geekdocFlatSection }}
        <span>
          <a href="{{ .RelPermalink }}" class="gdoc-toc__entry">{{ partial "title" . }}</a>
        </span>
      {{ else }}
        <span>{{ partial "title" . }}</span>
      {{ end }}

      {{ $numberOfPages := (add (len .Pages) (len .Sections)) }}
      {{ if and (ne $numberOfPages 0) (not .Params.geekdocFlatSection) }}
        {{ template "toc-tree" dict "sect" .Pages }}
      {{ end }}
      </li>
      {{ end }}
      {{ end }}
    {{ end }}
  </ul>
{{ end }}