visible list filtered & tree-utils updated

npm/ng-packs/packages/core/src/lib/services/routes.service.ts

@@ -197,7 +197,7 @@ export abstract class AbstractNavTreeService<T extends ABP.Nav>
 @Injectable({ providedIn: 'root' })
 export class RoutesService extends AbstractNavTreeService<ABP.Route> {
   get groupedVisible(): RouteGroup<ABP.Route>[] | undefined {
-    return this.createGroupedTree(this.visible);
+    return this.createGroupedTree(this.visible.filter(f => f.path || f.children?.length > 0));
   }
 
   get groupedVisible$(): Observable<RouteGroup<ABP.Route>[] | undefined> {

npm/ng-packs/packages/core/src/lib/utils/tree-utils.ts

@@ -1,3 +1,5 @@
+import { isArray } from './common-utils';
+
 /* eslint-disable @typescript-eslint/ban-types */
 export class BaseTreeNode<T extends object> {
   children: TreeNode<T>[] = [];
@@ -77,8 +79,8 @@ export function createTreeNodeFilterCreator<T extends object>(
 export function createGroupMap<T extends { [key: string]: string }>(
   list: TreeNode<T>[],
   othersGroupKey: string,
-): Map<string, TreeNode<T>[]> | undefined {
-  if (!list || !Array.isArray(list) || !list.some(node => Boolean(node.group))) return undefined;
+) {
+  if (!isArray(list) || !list.some(node => Boolean(node.group))) return undefined;
 
   const mapGroup = new Map<string, TreeNode<T>[]>();