import { IObservable, IObservablePipe } from '@lifaon/rx-js-light';
import { ILocales } from '../../locales/locales.type';
import { IRelativeTimeFormatOptions, IRelativeTimeFormatUnit, IRelativeTimeFormatValue } from '../relative-time-format.type';
export declare function relativeTimeFormatWithUnitObservablePipe(locales: IObservable<ILocales>, unit: IObservable<IRelativeTimeFormatUnit>, options?: IObservable<IRelativeTimeFormatOptions>): IObservablePipe<IRelativeTimeFormatValue, string>;