Konvert is a node module for fetching latest currency conversion. It can also get which countries the user can spend the target-currency.
npm i konvert
or
yarn add konvert
const {konvert, konvertCountries} = require('konvert');
// convert 20 pounds to Philippine peso
konvert('GBP', 'PHP', 20)
.then(amount => console.log(amount));
// get all countries that support pounds
konvertCountries('GBP')
.then(countries => console.log(countries));