const ELEMENTS = 10000;options = {    evalPath: undefined,    maxWorkers: 4,    synchronous: false};const arr = new Array(ELEMENTS).fill().map(Math.random);// Sequencial Algorithmconst start = performance.now();arr.map(number => number * 7);console.log(performance.now()-start); // about 1 ms on my machine// Parallel Alogorithmconst start2 = performance.now();var Parallel = require('paralleljs');var p = new Parallel(arr, options);log = function () {     console.log(performance.now()-start2); // about 360 up to 420 ms on my machine, depending on maxWorkers};p.map(number => number * 7).then(log);