async.js

const fetch = require('node-fetch');
const url = 'https://restcountries.eu/rest/v2/alpha/gb';

async function getCountry() {
    return url
        |> fetch
        |> await
        |> r => r.json()
        |> await
        |> c => { 
            return {
                name: c.name,
                capital: c.capital,
                population: c.population,
                flag: c.flag
            }
        };
}

(async () => {
    const response = await getCountry();
    console.log(response);
})();