import { AbstractControl, ValidationErrors, Validator } from '@angular/forms';
import { DateIOService } from './providers/date-io.service';
import * as i0 from "@angular/core";
export declare class ClrDateInputValidator implements Validator {
    private dateIOService;
    constructor(dateIOService: DateIOService);
    validate(control: AbstractControl): ValidationErrors;
    static ɵfac: i0.ɵɵFactoryDeclaration<ClrDateInputValidator, [{ optional: true; }]>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<ClrDateInputValidator, "[clrDate]", never, {}, {}, never, never, false, never>;
}