identify navigation group for currrent page, if applicable

Author: mojavelinux

src/helpers/nav-group.js

@@ -0,0 +1,6 @@
+'use strict'
+
+module.exports = ({ data: { root: { page, site } } }) => {
+  const pageComponentName = page.component.name
+  return site.keys.navGroups.find(({ components }) => components.includes(pageComponentName))
+}

src/partials/footer-scripts.hbs

@@ -2,6 +2,9 @@
 <script src="{{siteRootPath}}/site-navigation-data.js"></script>
 <script>
 window.siteNavigationGroups = {{{stringify (compile-nav-groups)}}}
+{{#if page.component}}
+window.pageNavigationGroup = "{{{lookup (nav-group) 'title'}}}"
+{{/if}}
 </script>
 <script src="{{{uiRootPath}}}/js/site.js"></script>
 {{#with page.attributes.content-scripts}}