Run results for: lodash map vs js map

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Safari/537.36 Edg/137.0.0.0

Browser: Chrome 137

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

js reduce

179K/s

lodash reduce

170K/s

JS map

144K/s

lodash map

44K/s

View exact numbers

Test name	Executions per second
✓ js reduce	178,646 Ops/sec
lodash reduce	170,409 Ops/sec
JS map	143,604 Ops/sec
lodash map	43,869 Ops/sec

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

const j = [1, 4, 9, 16, 25, 35, 49, 68, 74, 86, 93, 110, 121, 135, 141, 156, 157, 158, 161, 162, 163, 164, 165, 166, 167, 168]


function mapper(el) {
   return el + 10
}

function lodashMap () {
  arr = _.map(j, mapper)
  console.log(arr)
}

function jsMap () {
  arr = j.map(mapper)
  console.log(arr)
}

function reducer (sum, el){
	return sum + el
}

function lodashReduce () {
  sum = _.reduce(j, reducer, 0)
  console.log(sum)
}

function jsReduce () {
  sum = j.reduce(reducer, 0)
  console.log(sum)
}

Tests:

JS map
jsMap()
lodash map
lodashMap()
js reduce
jsReduce()
lodash reduce
lodashReduce()