feat: add hasInvisibleChild method to routes service

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

@@ -144,6 +144,11 @@ export abstract class AbstractNavTreeService<T extends ABP.Nav> extends Abstract
     return this.store.selectSnapshot(ConfigState.getGrantedPolicy(requiredPolicy));
   }
 
+  hasInvisibleChild(identifier: string): boolean {
+    const node = this.find(item => item[this.id] === identifier);
+    return node?.children?.some(child => child.invisible);
+  }
+
   /* istanbul ignore next */
   ngOnDestroy() {}
 }

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

@@ -68,6 +68,16 @@ describe('Routes Service', () => {
     });
   });
 
+  describe('#hasInvisibleChild', () => {
+    it('should return if node has invisible child', () => {
+      service.add(routes);
+
+      expect(service.hasInvisibleChild('foo')).toBe(true);
+      expect(service.hasInvisibleChild('bar')).toBe(false);
+      expect(service.hasInvisibleChild('baz')).toBe(false);
+    });
+  });
+
   describe('#remove', () => {
     it('should remove routes based on given routeNames', () => {
       service.add(routes);