Fix extra spacing on pages with no sections

assets/js/handlebars/helpers.js

@@ -54,6 +54,14 @@ Handlebars.registerHelper('isNonEmptyArray', function (entry, options) {
   }
 })
 
+Handlebars.registerHelper('isEmptyArray', function (entry, options) {
+  if (Array.isArray(entry) && entry.length === 0) {
+    return options.fn(this)
+  } else {
+    return options.inverse(this)
+  }
+})
+
 Handlebars.registerHelper('isLocal', function (nodeId, options) {
   const pathSuffix = window.location.pathname.split('/').pop()
   const nodePage = nodeId + '.html'

assets/js/handlebars/templates/sidebar-items.handlebars

@@ -16,17 +16,24 @@
       {{else}}
         {{{node.title}}}
       {{/if}}
-      <span class="icon-expand"></span>
+      {{#isEmptyArray node.headers}}
+      {{else}}
+        <span class="icon-expand"></span>
+      {{/isEmptyArray}}
     </a>
 
-    <ul>
-      {{#isArray node.headers}}
-        {{#each node.headers}}
-          <li>
-            <a href="{{node.id}}.html#{{{anchor}}}">{{{id}}}</a>
-          </li>
-        {{/each}}
-      {{else}}
+    {{#isArray node.headers}}
+      {{#isNonEmptyArray node.headers}}
+        <ul>
+          {{#each node.headers}}
+            <li>
+              <a href="{{node.id}}.html#{{{anchor}}}">{{{id}}}</a>
+            </li>
+          {{/each}}
+        </ul>
+      {{/isNonEmptyArray}}
+    {{else}}
+      <ul>
         {{#showSections node}}
           <li class="docs {{#isLocal node.id}}open{{/isLocal}}">
             <a href="{{node.id}}.html#content" class="expand">
@@ -62,7 +69,7 @@
             </ul>
           </li>
         {{/each}}
-      {{/isArray}}
       </ul>
+    {{/isArray}}
   </li>
 {{/each}}