import { AbstractControl, ValidationErrors, Validator } from '@angular/forms';
import { InjectionToken } from '@angular/core';
import * as i0 from "@angular/core";
export type MaskResolver = (value: string) => string;
export declare const MASK_RESOLVER: InjectionToken<unknown>;
export declare class InputMaskValidatorDirective implements Validator {
    private readonly maskResolver?;
    private $mask?;
    private onValidatorChange;
    constructor(maskResolver?: MaskResolver);
    set mask(mask: string | undefined);
    validate(control: AbstractControl): ValidationErrors | null;
    registerOnValidatorChange(fn: () => void): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<InputMaskValidatorDirective, [{ optional: true; }]>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<InputMaskValidatorDirective, "mcl-input[mask]", never, { "mask": { "alias": "mask"; "required": false; }; }, {}, never, never, true, never>;
}