To add a custom validator function to a field you can add an object to the validators array like below. AbstractControl is the AbstractControl type from Angular and will be passed to this validator function.

This package provides a directive, which can connect to a form's AbstractControl.

Provides wrapped [Angular's FormBuilder](https://angular.io/docs/ts/latest/api/forms/index/FormBuilder-class.html) to write `AbstractControl<T>`. It's a workaround for [issue#13721](https://github.com/angular/angular/issues/13721).

Provides wrapped [Angular's FormBuilder](https://angular.io/docs/ts/latest/api/forms/index/FormBuilder-class.html) to write `AbstractControl<T>`. It's a workaround for [issue#13721](https://github.com/angular/angular/issues/13721).

Strongly typed definitions for Angulars @angular/forms

Provides wrapped [Angular's FormBuilder](https://angular.io/docs/ts/latest/api/forms/index/FormBuilder-class.html) to write `AbstractControl<T>`. It's a workaround for [issue#13721](https://github.com/angular/angular/issues/13721).

A Lit Element library to semplify the use of forms in the Angular way.

This lib provide some useful functions to extend core types and some of the Angular Types

Teradata UI Platform Dynamic Forms Module

Standardise your custom UI form components with ControlValueAccessor Test Suite

Template-driven form validation for Angular.

A package for creating reactive forms based on Angular's Reactive Forms.

Library with utility methods for reactive abstract controls

Dynamic forms extension for Covalent

[](https://github.com/gparlakov/show-form-control/actions/workflows/test-forms-typed.yml) [![Release](https://github.com/gparlakov/show-form-control/a

Find more at libraries and examples at [NgServe.io](https://ngserve.io).

Strongly typed definitions for Angular's @angular/forms

The dynamic validator library for Angular

Strongly typed definitions for Angular's @angular/forms

MobX form state classes