left-menu.component.html

<div>

  <nav id="leftNav">

    <div *ngFor="let group of menu" class="leftNavGroup">

      <span class="menuHeader">{{group.name}}</span>
      <a *ngFor="let item of group.items" class="leftNavItem" [routerLink]="item.path" routerLinkActive="active" [queryParams]="item.params" >{{item.name}}</a>

    </div>

  </nav>


</div>