import { ValidatorFn } from "@angular/forms";
export declare function lowercaseValidator(): ValidatorFn;
export declare function uppercaseValidator(): ValidatorFn;
export declare function alphabetValidator(): ValidatorFn;
export declare function alphanumericValidator(): ValidatorFn;
export declare function urlValidator(): ValidatorFn;
export declare function hexColorCodeValidator(): ValidatorFn;
export declare function ipv4Validator(): ValidatorFn;
export declare function ipv6Validator(): ValidatorFn;