import { Provider, Type } from '@angular/core';
import { VudDateStruct } from '../datepicker.model';
import * as i0 from "@angular/core";
export declare function VUD_DATE_ADAPTER_FACTORY(): VudDateStructAdapter;
/**
 * An abstract service that does the conversion between the internal datepicker `VudDateStruct` model and
 * any provided user date model `D`, ex. a string, a native date, etc.
 *
 * The default datepicker implementation assumes we use `VudDateStruct` as a user model.
 */
export declare abstract class VudDateAdapter<D> {
    /**
     * Converts a user-model date of type `D` to an `VudDateStruct` for internal use.
     */
    abstract fromModel(value: D | null): VudDateStruct | null;
    /**
     * Converts an internal `VudDateStruct` date to a user-model date of type `D`.
     */
    abstract toModel(date: VudDateStruct | null): D | null;
    static ɵfac: i0.ɵɵFactoryDeclaration<VudDateAdapter<any>, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<VudDateAdapter<any>>;
}
export declare class VudDateStructAdapter extends VudDateAdapter<VudDateStruct> {
    fromModel(date: VudDateStruct | null): VudDateStruct | null;
    toModel(date: VudDateStruct | null): VudDateStruct | null;
    static ɵfac: i0.ɵɵFactoryDeclaration<VudDateStructAdapter, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<VudDateStructAdapter>;
}
export declare function provideVudDatepickerAdapter<T>(adapter: Type<VudDateAdapter<T>>): Provider;