mnb-exchange-rate/build/response/currency_units.d.ts

[Docs - mnb.hu](https://www.mnb.hu/sajtoszoba/sajtokozlemenyek/2015-evi-sajtokozlemenyek/tajekoztatas-az-arfolyam-webservice-mukodeserol)

import { Response } from '../response';
export type GetCurrencyUnitsResponse = Response & {
    [key: string]: number;
};