Parallel map vs Standard Map using Deno

run_this_with_deno.js

import Parallel from 'npm:paralleljs'

import _ from 'npm:lodash'

/**
* Delay for a number of milliseconds
*/
function sleep(delay) {
    var start = new Date().getTime();
    while (new Date().getTime() < start + delay);
}

let arr = _.times(navigator.hardwareConcurrency, _.constant(1000));

let p = new Parallel(arr, {maxWorkers: navigator.hardwareConcurrency, synchronous: false});

const t0 = performance.now()

// block of code that needs to be measured
p.map(sleep)

const t1 = performance.now()

console.log(`Time it takes to run the parallel map: ${t1 - t0} ms`)

const t3 = performance.now()

// block of code that needs to be measured
arr.map(sleep)

const t4 = performance.now()

console.log(`Time it takes to run the function: ${t4 - t3} ms`)