Run results for: Map (Native vs Ramda vs Lodash vs Immutable) - sample size 100 1

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36

Browser: Chrome 71

Operating system: Mac OS X 10.14.2

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
Ramda.map	39118.2 Ops/sec
Array.prototype.map	7848.9 Ops/sec
lodash.map	42647.2 Ops/sec
Immutable.map	5185030.0 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 = [...Array(10000)].map((n, idx) => idx);
var data = _.range(10000);
var immutableData = Immutable.Seq(data);

Tests:

Ramda.map
R.map(double, data);
Array.prototype.map
data.map(double);
lodash.map
_.map(data, double);
Immutable.map
immutableData.map(double)

Run results for: Map (Native vs Ramda vs Lodash vs Immutable) - sample size 100 1

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