feat: add hasChildren method to RoutesService

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

@@ -151,6 +151,11 @@ export abstract class AbstractNavTreeService<T extends ABP.Nav> extends Abstract
     return this.store.selectSnapshot(ConfigState.getGrantedPolicy(requiredPolicy));
   }
 
+  hasChildren(identifier: string): boolean {
+    const node = this.find(item => item[this.id] === identifier);
+    return Boolean(node?.children?.length);
+  }
+
   hasInvisibleChild(identifier: string): boolean {
     const node = this.find(item => item[this.id] === identifier);
     return node?.children?.some(child => child.invisible);

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

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