Function normalizeValidators

packages/forms/src/validators.ts:653–659

(validators: (V | Validator | AsyncValidator)[])

 *     as well as represented as a validator class.
 */
export function normalizeValidators<V>(validators: (V | Validator | AsyncValidator)[]): V[] {
  return validators.map((validator) => {
    return isValidatorFn<V>(validator)
      ? validator
      : (((c: AbstractControl) => validator.validate(c)) as unknown as V);
  });
}

/**
 * Merges synchronous validators into a single validator function.