set-value.directive.ts

import {Directive, Input} from '@angular/core';
import {NgControl} from '@angular/forms';

@Directive({
    selector: '[setValue]',
})
export class SetValueDirective {
    @Input()
    set setValue(val: any) {
        this.ngControl.control.setValue(val);
    }

    constructor(private ngControl: NgControl) {}
}