Run results for: Map (Native vs Ramda vs Lodash vs Immutable

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 11_0_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.88 Safari/537.36

Browser: Chrome 87

Operating system: Mac OS X 11.0.1

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
Ramda.map	1136175.9 Ops/sec
Array.prototype.map	1006744704.0 Ops/sec
lodash.map	4588636.0 Ops/sec
Immutable.map	416375.9 Ops/sec

HTML Preparation code:

<script src="//cdnjs.cloudflare.com/ajax/libs/ramda/0.25.0/ramda.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js"></script>
<script type='text/javascript' src='https://cdnjs.cloudflare.com/ajax/libs/immutable/3.8.2/immutable.min.js'></script>

Script Preparation code:

function double(n) {
	return n*2;
}
var data = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30];

Tests:

Ramda.map
R.pipe( R.add(5), R.subtract(3), R.multiply(10), R.divide(2) )(0)
Array.prototype.map
const t = ((0 + 5 - 3) * 10) / 2
lodash.map
_.map(data, double);
Immutable.map
Immutable.fromJS(data).map(double)

Run results for: Map (Native vs Ramda vs Lodash vs Immutable

measures the speed of ramda's map vs Array's native map vs lodash map vs Immutable map

Ramda.map

Array.prototype.map

lodash.map

Immutable.map