import { NgControl } from '@angular/forms';
import * as i0 from "@angular/core";
export declare class AswDateFormat {
    private control;
    /**
     * validate if input is udpated or not
     */
    isUpdated: boolean;
    constructor(control: NgControl);
    dateFormat(event: KeyboardEvent): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<AswDateFormat, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<AswDateFormat, "[aswDateFormat]", never, {}, {}, never, never, false, never>;
}