import { ComplexAttributeConverter, ReactiveElement } from 'lit';
import { DateAdapter } from '../datetime.ts';
import { Interface } from './base.ts';
/**
 * Will convert date object values to ISO8601 formatted strings as attributes.
 * Should be used together with the `plainDate` decorator.
 */
export declare const plainDateConverter: ComplexAttributeConverter;
export interface SbbPlainDateConfiguration {
    /**
     * Provide a function that will be called if the internal value is null.
     * @param dataAdapter The current date adapter.
     * @returns A date object.
     */
    fallback?: <T>(dataAdapter: DateAdapter<T>) => T;
}
/**
 * Decorator that tries to deserialize the given value to a date object
 * and adapts the getter to only return a copy of the internal value,
 * in order to avoid outside manipulation of date objects.
 */
export declare const plainDate: <C extends Interface<ReactiveElement>, V>(config?: SbbPlainDateConfiguration) => (target: ClassAccessorDecoratorTarget<C, V>, context: ClassAccessorDecoratorContext<C, V>) => any;
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