Benchmark on different node.js version

for-map.js

const Benchmark = require('benchmark')
const R = require('ramda')
const map = require('lodash.map')

const defarrow = array => () => {
  const a = item => item + 1
  return array.map(a)
}

const forloop = array => () => {
  const out = []
  for (var i = 0; i < array.length; i++) {
    out.push(array[i] + 1)
  }
  return out
}

const ramda = array => () => {
  const a = item => item + 1
  return R.map(a, array)
}

const lodash = array => () => {
  const a = item => item + 1
  return map(array, a)
}

const out = [[], [], [], []]

const scenario = (array, size) => {
  suite = new Benchmark.Suite()
  suite
    .add('map', defarrow(array))
    .add('for', forloop(array))
    .add('ramda', ramda(array))
    .add('lodash', ramda(array))
    // .on('cycle', event => {
    //   console.info(String(event.target), event.target.hz)
    // })
    .on('complete', () => {
      const results = suite.map(s => Math.floor(s.hz * size))
      for (var k = 0; k < results.length; k++) {
        out[k].push(results[k])
      }
    })
    .run()
}

for (var i = 1; i <= 10000000; i = i * 10) {
  var array = Array(i)
    .fill(0)
    .map((a, i) => i)
  scenario(array, i)
}

const version = process.version

const tests = ['map', 'for', 'ramda', 'lodash']

for (var j = 0; j < out.length; j++) {
  console.log(version + '-' + tests[j] + ' ' + out[j].map(String).join(' '))
}

Node.js array.map benchmark

#!/bin/bash

export NODE_ENV=production

function benchmark {
  echo $NODE_ENV
  nvm use "$1"
  rm -rf node_modules
  npm i
  node for-map.js >> results.txt
}

benchmark 4
benchmark 6
benchmark 8
benchmark 10
benchmark 11
benchmark 12

package.json

{
  "name": "nodebench",
  "version": "1.0.0",
  "description": "",
  "main": "bench.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "benchmark": "^2.1.4",
    "lodash.map": "^4.6.0",
    "ramda": "^0.26.1"
  }
}

results.txt

v4.9.1-map 4561426 11636905 14757111 14967702 14855885 15092053 14269126 14529992
v4.9.1-for 28192452 154308614 159897884 156444372 147897936 161935874 60580287 46947177
v4.9.1-ramda 1364886 12646556 63598917 105809736 114432908 121314576 85808626 88918311
v4.9.1-lodash 1433139 12244577 62247120 106658581 114826702 122422422 85660291 89438147
v6.17.1-map 1825905 2558404 2562730 2519030 2537938 1699887 1615711 1654766
v6.17.1-for 24173582 150449303 127030555 147609580 136429540 91872918 52736659 47999330
v6.17.1-ramda 1844130 14192082 57524221 100708863 108448791 74321710 82854332 89513928
v6.17.1-lodash 1754818 14951969 46567406 100050350 106729023 77208854 82793717 88110875
v8.16.0-map 10592705 39758890 61004355 65345990 66924220 6972618 7096787 6943962
v8.16.0-for 26136759 157199470 190592357 179679343 195569873 70323662 50408978 47773108
v8.16.0-ramda 4119820 30974665 87909397 109592354 109293693 75032230 84038700 85000426
v8.16.0-lodash 4150525 30887155 88561622 108351050 112561074 76364194 83915050 84479824
v10.16.0-map 78674873 233948263 331257468 315010060 307676801 6728500 7266480 7262032
v10.16.0-for 29399076 200397750 189353154 183924914 206985910 75597432 52660217 47861125
v10.16.0-ramda 5222369 34861262 80971341 101105658 101599904 74783027 78568673 83070235
v10.16.0-lodash 5355665 35026214 81149594 102370639 102848546 73697117 78357844 82182737
v11.15.0-map 73470116 231347203 330741022 339956941 333480385 7077673 7142953 7135761
v11.15.0-for 30084280 199596395 188902182 184263909 205331778 75056980 52814763 49274780
v11.15.0-ramda 5105641 35054915 79216615 98892510 99963461 73693757 78364305 83450937
v11.15.0-lodash 5200081 34871951 80379704 99589989 99988025 73242399 78083713 82652017
v12.6.0-map 43871274 240492153 395656850 419830986 419339616 48864443 49891941 48719227
v12.6.0-for 25988625 196292477 198940903 182413437 199190785 75041314 50383613 40974428
v12.6.0-ramda 7917015 44291841 80609864 95004290 97505835 80127842 77331710 77257113
v12.6.0-lodash 8052335 44159300 80245829 94906948 95923766 78466215 76837915 78091185