frontend/marko/page/story-content/components/story-content-menu/index.marko

<menu user=input.user>
  <menu-header>${input.story.name}</menu-header>
  <for(chapter in input.story.chapters | status-var=loop)>
    <menu-link key=chapter.id on-click("select", "chapter", chapter.id) href=("#" + chapter.id) selected=(state.selectedChapter === chapter.id) icon=(loop.getIndex()+1)>${component.chapterTitle(chapter)}</menu-link>
  </for>
  <menu-link dark key="_create" on-click("select", "add", null) icon="+">Add Chapter</menu-link>
</menu>