ui-view and router-outlet on same page

Question

<a [routerLink]="['/angularjs']">AngularJs</a>

<a [routerLink]="['/angular2']">Angular2</a>

<router-outlet></router-outlet>

<div id='awesome' ui-view></div>`

 

 

Going from angularjs to angular2 does not clear out ui-view but vice-versa clear router-outlet. How to make it work as separate view.