import { AbstractControl, AbstractControlOptions as AngularAbstractControlOptions, ValidationErrors } from '@angular/forms';
import { Observable } from 'rxjs';
export type ValidatorFn<TValue> = (control: AbstractControl<TValue>) => ValidationErrors | null;
export type AsyncValidatorFn<TValue> = (control: AbstractControl<TValue>) => Promise<ValidationErrors | null> | Observable<ValidationErrors | null>;
export interface AbstractControlOptions<TValue> extends AngularAbstractControlOptions {
    validators?: ValidatorFn<TValue> | ValidatorFn<TValue>[] | null;
    asyncValidators?: AsyncValidatorFn<TValue> | AsyncValidatorFn<TValue>[] | null;
}