'use strict';

const async = require('async');

console.log('Parallel array of function');

const arr = [

(callback) => callback(null, 'uno'),

(callback) => callback(null, 'due'),

(callback) => callback(null, 'tre')

];

async.parallel(

arr,

(err, res) => {

console.dir({ err, res });

}

);

console.log('Parallel hash of function');

const obj = {

key1: (callback) => callback(null, 'uno'),

key2: (callback) => callback(new Error('Oh, shit'), 'due'),

key3: (callback) => callback(null, 'tre')

};

async.parallel(

obj,

(err, res) => {

console.dir({ error: err.message, res });

}

);