npm install --save angular-tree-component

@import '~angular-tree-component/dist/angular-tree-component.css';

import { TreeModule } from 'angular-tree-component';

@NgModule({
 imports: [..., TreeModule],
 ...
})
export class AppModule {
 ...
}

nodes = [
  {
   id: 1,
   name: 'root1',
   children: [
    { id: 2, name: 'child1' },
    { id: 3, name: 'child2' }
   ]
  },
  {
   id: 4,
   name: 'root2',
   children: [
    { id: 5, name: 'child2.1' },
    {
     id: 6,
     name: 'child2.2',
     children: [
      { id: 7, name: 'subsub' }
     ]
    }
   ]
  }
 ];
 options = {};

 <tree-root [nodes]="nodes" [options]="options"></tree-root>

 mouse: {
     dblClick: (tree, node, $event) => {
      if (node.hasChildren) TREE_ACTIONS.TOGGLE_EXPANDED(tree, node, $event);
     }
    }

getChildren: this.getChildren.bind(this),

<tree-root [nodes]="nodes"
  (toggleExpanded)="onEvent($event)"
  (activate)="onEvent($event)"
  (focus)="onEvent($event)"
  (blur)="onEvent($event)">
 </tree-root>

 onEvent = ($event) => console.log($event);