hexo-theme-stellar/layout/_partial/widgets/tree.ejs

<%
const proj = theme.wiki.tree[page.wiki]

function layoutTocHeader(title) {
  var el = ''
  el += `<div class="widget-header dis-select">`
  el += `<span class="name">${title || __("meta.toc")}</span>`
  el += `</div>`
  return el
}

function layoutDocTree(pages) {
  var el = ''
  for (let p of pages) {
    if (p.title == null || p.title.length == 0) {
      continue
    }
    let isActive = ''
    if (p.path === page.path) {
      isActive += ' active'
    }
    if (proj.pages.length > 1) {
      let href = url_for(p.path);
      if (p.is_homepage) {
        href += '#start'
      }
      el += `<a class="link${isActive}" href="${href}">`
      el += `<span class="toc-text">${p.title}</span>`
      if (isActive.length > 0) {
        el += icon('default:bookmark.active')
      }
      el += `</a>`
    }
  }
  return el
}


function layoutDiv(fallback) {
  if (proj == null) {
    return ''
  }
  if (proj.pages == null || proj.pages.length == 0) {
    return ''
  }
  if (proj.sections == null || proj.sections.length == 0) {
    return ''
  }
  var el = ''
  for (let sec of proj.sections) {
    if (sec.pages.length == 0) {
      continue
    }
    if (sec.title?.length > 0) {
      el += layoutTocHeader(sec.title)
    }
    const docTree = layoutDocTree(sec.pages)
    if (docTree.trim().length > 0) {
      el += `<div class="widget-body fs14">${docTree}</div>`
    }
  }
  if (el.trim().length > 0) {
    return `<widget class="widget-wrapper${scrollreveal(' ')} post-list">${el}</widget>`
  } else {
    return ''
  }
}

%>

<%- layoutDiv() %>