bootstrap: [LoginComponent]

const loginRoutes: Routes = [
  {path: 'dash', component: DashboardComponent},
  {path: 'registrar', component: RegistrarComponent},
];

@NgModule({
  imports:[RouterModule.forRoot(loginRoutes)],
  exports: [RouterModule]
})

<div *ngIf="!usuarioautenticou" class="wrapper">

<div>
     <button type="submit" routerLink="/dash" name="entrar" (click)="fazerLogin()" class="btn btn-success waves-effect" id="login-button">Entrar</button>
     <button type="button" routerLink="/registrar" class="btn btn-outline-success waves-effect">Registrar</button>
</div>
<router-outlet></router-outlet>

<router-outlet></router-outlet>