Downloading 2 avatars in parallel at a time using Async in Node.js

ParallelizingTasksInNode.js

const request = require('request');
const fs = require('fs');
const async = require('async');

const avatarsNamesArray = ['1.png','2.png','3.png','4.png','5.png','6.png','7.png','8.png','9.png','10.png'];

getAndStoreAvatar = function(avatarName, callback) {
    console.log(avatarName + ' is downloading');
    let stream = request
                    .get('https://api.adorable.io/avatars/285/' + avatarName)
                    .on('error', function(err) {
                        console.log(err);
                        callback();
                    })
                    .pipe(fs.createWriteStream(avatarName));
    stream.on('finish', callback);
};

async.forEachLimit(avatarsNamesArray, 2, getAndStoreAvatar, function() {
    console.log('Avatars download complete');
});