import { IObservable, IObservablePipe } from '@lifaon/rx-js-light';
import { ILocales } from '../locales/locales.type';
import { INumberFormatOptions, INumberFormatValue } from './number-format.type';
export declare function numberFormatObservablePipe(locales: IObservable<ILocales>, options?: IObservable<INumberFormatOptions>): IObservablePipe<INumberFormatValue, string>;