#!/usr/bin/env node; const Utils = require('./Utils'); const main = async () => { let planetDiameters = new Map([ ["Mercury", 4879], ["Venus", 12103], ["Earth", 12756], ["Mars", 6794], ["Jupiter", 142985], ["Saturn", 120534], ["Uranus", 51115], ["Neptune", 49534], ["Pluto", 2374], ["Ceres", 946], ["Eris", 2326], ["Makemake", 1430] ]); for (let planet of planetDiameters.keys()) { console.log([planet, " has a diameter of ", planetDiameters.get(planet), " km"].join('')); } } main().catch( e => { console.error(e) } );