import { ValidatorFn } from '@angular/forms';
import { PersianNumberService } from '../Services/persian-number.service';
import { PersianLetterService, PLOptions } from '../Services/persian-letter.service';
/**
 * Reactive form validator that checks form control value contains only persian numbers.
 *
 * @param persianNumberService
 */
export declare function persianNumbersValidator(persianNumberService?: PersianNumberService): ValidatorFn;
/**
 * Reactive form validator that checks form control value contains only persian letters and allowed characters in the options parameter.
 *
 * @param options see documents of isPersian method of the PersianLetterService for more info about options.
 * @param persianLetterService
 */
export declare function persianLettersValidator(// eslint-disable-line prefer-arrow/prefer-arrow-functions
options?: PLOptions, persianLetterService?: PersianLetterService): ValidatorFn;