import { AbstractControl, Validator, ValidatorFn } from '@angular/forms';
export declare function maxItemsValidator(maxItems: number, errMessage: string): ValidatorFn;
export declare class MaxItemsValidatorDirective implements Validator {
    maxItems: number;
    errMessage: string;
    validate(control: AbstractControl): {
        [key: string]: any;
    } | null;
}