Custom mask directive in Angular 5

I'm trying to use the RobinHerbots / Inputmask library as a custom Angular 5 directive. However, when using the mask, the field not valid because it can not get the value typed. When I take the mask directive, the field takes the value normally.

The policy is as follows:

import {Directive, ElementRef, Input, OnChanges} from '@angular/core';

declare var Inputmask;
@Directive({
  selector: '[mascara]'
})
export class MascaraDirective implements OnChanges {

  @Input() mascara: any;
  constructor(private element: ElementRef) { }

  ngOnChanges() {
    Inputmask(this.mascara).mask(this.element.nativeElement);
  }
}

In HTML it looks like this:

<label>Cep: {{ personForm.get('addressZipcode').value }}</label>
<input type="tel" class="form-control" placeholder="Cep" formControlName="addressZipcode" mascara="99999-999">

How to resolve this situation?