im-angular-validators/lib/validators/date-comparator.validator.d.ts

This library will help you with lots of already written mostly used validators for Angular 2+ applications.

import { ValidatorFn } from '@angular/forms';
import { IMDateComparatorValidatorConfigInterface } from '../interfaces/date-comparator-configuration.interface';
export declare const IMDateComparatorValidator: (config: IMDateComparatorValidatorConfigInterface) => ValidatorFn;