link.component.html

<a [href]="getValue()" target="{{(config.blank) ? '_blank' : '_self'}}"
    [ngClass]="{'btn btn-outline-primary btn-sm': config.display=='button'}">
    <span *ngIf="config.display === 'text'">{{ getValue() }}</span>
    <span *ngIf="config.display === 'button'" class="{{config.icon_button}}"></span>
</a>