import { OnChanges } from '@angular/core';
import { Subject } from 'rxjs';
import { KitMomentProvider } from '../kit-moment/kit-moment-provider';
import { KitModelInterceptor } from '../kit-value-accessor/kit-model-interceptor';
/**
 * Displays date in an input in any format and store JS Date-object in model.
 *
 *
 * ### Usage
 *
 * Use the directive:
 *
 * ```html
 * <input [(ngModel)]="date"
 *        kitInputDate>
 * ```
 *
 * #### Format
 *
 * You can define rendering/parsing format:
 *
 * ```html
 * <input [(ngModel)]="date"
 *        kitInputDate
 *        format="YYYY/DD/MM">
 * ```
 *
 * __Requires Moment.js.__
 *
 *
 * ### Example
 *
 * * collection:date-picker -
 * [sources](https://github.com/ngx-kit/ngx-kit/tree/master/packages/collection/lib/ui-date-picker),
 * [demo](http://ngx-kit.com/collection/module/ui-date-picker)
 */
export declare class KitInputDateDirective implements KitModelInterceptor, OnChanges {
    private momentProvider;
    /**
     * @internal
     */
    kitInputDate: void;
    /**
     * `Date.toLocaleDateString()` options.
     */
    options: any;
    /**
     * Parse and render format (works only with moment.js).
     */
    format: string;
    readonly viewStateChanges: Subject<string>;
    readonly modelStateChanges: Subject<any>;
    private moment;
    constructor(momentProvider: KitMomentProvider<any>);
    ngOnChanges(): void;
    /**
     * Handle input changing by user.
     */
    input(value: string, event: any): void;
    keyDown(event: any): void;
    /**
     * Handle external modal changing.
     */
    writeValue(value: any): void;
    private parse;
    private isValid;
}