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Unbelievable how many queries this thing needs...

includes/functions/_caching_and_transients.php

@@ -589,7 +589,8 @@ function fictioneer_purge_cache_transients( $post_id ) {
     fictioneer_delete_transients_like( 'fictioneer_shortcode' );
   }
 
-  // Footer menu
+  // Menus
+  delete_transient( 'fictioneer_main_nav_menu' );
   delete_transient( 'fictioneer_footer_menu' );
 }
 add_action( 'save_post', 'fictioneer_purge_cache_transients' );

includes/functions/hooks/_general_hooks.php

@@ -91,6 +91,7 @@ if ( ! function_exists( 'fictioneer_footer_menu_row' ) ) {
           $menu = str_replace( 'class="', 'class="footer__menu-list-item ', $menu );
           $menu = str_replace( 'current_page_item', '', $menu );
           $menu = str_replace( 'current-menu-item', '', $menu );
+          $menu = str_replace( 'aria-current="page"', '', $menu );
           $menu = preg_replace( '/<\/li>\s*<li/', '</li><li', $menu );
 
           set_transient( 'fictioneer_footer_menu', $menu );

partials/_navigation.php

@@ -24,14 +24,27 @@
   <div class="main-navigation__wrapper">
     <div class="main-navigation__left">
       <?php
-        wp_nav_menu(
-          array(
-            'theme_location' => 'nav_menu',
-            'menu_class' => 'main-navigation__list',
-            'container' => '',
-            'items_wrap' => '<ul id="%1$s" class="%2$s">%3$s</ul>'
-          )
-        );
+        $menu = get_transient( 'fictioneer_main_nav_menu' );
+
+        if ( empty( $menu ) ) {
+          $menu = wp_nav_menu(
+            array(
+              'theme_location' => 'nav_menu',
+              'menu_class' => 'main-navigation__list',
+              'container' => '',
+              'items_wrap' => '<ul id="%1$s" class="%2$s">%3$s</ul>',
+              'echo' => false
+            )
+          );
+
+          $menu = str_replace( 'current_page_item', '', $menu );
+          $menu = str_replace( 'current-menu-item', '', $menu );
+          $menu = str_replace( 'aria-current="page"', '', $menu );
+
+          set_transient( 'fictioneer_main_nav_menu', $menu );
+        }
+
+        echo $menu;
       ?>
     </div>
     <div class="main-navigation__right">

src/js/application.js

@@ -1978,3 +1978,23 @@ fcn_theBody.addEventListener('click', event => {
     }
   }
 });
+
+// =============================================================================
+// SCROLL TO ANCHORS
+// =============================================================================
+
+/**
+ * Mark currently active menu item
+ *
+ * @since 5.5.0
+ */
+
+function fcn_markCurrentMenuItem() {
+  _$$(`.menu-item > [data-nav-object-id="${fcn_theBody.dataset.postId}"]`).forEach(element => {
+    element.setAttribute('aria-current', 'page');
+    element.closest('.menu-item').classList.add('current-menu-item');
+  });
+}
+
+// Initialize
+fcn_markCurrentMenuItem();