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