import { AbstractControl, ValidationErrors, Validator } from '@angular/forms';
import * as i0 from "@angular/core";
export declare class CustomValidatorDirective implements Validator {
    validator: (value: any) => ValidationErrors | null;
    constructor();
    validate(control: AbstractControl): ValidationErrors | null;
    static ɵfac: i0.ɵɵFactoryDeclaration<CustomValidatorDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<CustomValidatorDirective, "[bkCustomValidator]", ["bkCustomValidator"], { "validator": { "alias": "bkCustomValidator"; "required": false; }; }, {}, never, never, true, never>;
}