import { IObservable, IObservablePipe } from '@lifaon/rx-js-light';
import { ILocales } from '../locales/locales.type';
import { IDateTimeFormatOptions, IDateTimeFormatValue } from './date-time-format.type';
export declare function dateTimeFormatObservablePipe(locales: IObservable<ILocales>, options: IObservable<IDateTimeFormatOptions>): IObservablePipe<IDateTimeFormatValue, string>;