Run results for: Ramda vs. Lodash + Immutable

Compares performance on the same task using Lodash vs two styles of Ramda vs two styles of "native" Javascript. In all cases the task is pulling "counter" property from each item in an array, filtering out odd items, squaring them, then returning those squared values that have less than two digits.

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.142 Safari/537.36

Browser: Chrome 75

Operating system: Windows

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
Lodash	1149.5 Ops/sec
Ramda without relying on currying or composition	826.0 Ops/sec
Ramda with currying and composition	1013.5 Ops/sec
Immutable	1007.9 Ops/sec

HTML Preparation code:

<script src="https://unpkg.com/ramda@0.25.0/dist/ramda.min.js"></script>
<script src="https://unpkg.com/lodash@4.17.10/lodash.js"></script>
<script src="https://unpkg.com/immutable@4.0.0-rc.9/dist/immutable.js"></script>

Script Preparation code:

var data = _.range(10000).map(function(i) {
  return {
    counter: i
  }
});

function isOdd(num) {
  return num % 2 === 1;
}

function square(num) {
  return num * num;
}

function lessThanThreeDigits(num) {
  return num.toString().length < 3;
}

Tests:

Lodash
var result = _.chain(data) .map('counter') .filter(isOdd) .map(square) .filter(lessThanThreeDigits) .value();
Ramda without relying on currying or composition
var result = R.filter(lessThanThreeDigits, R.map(square, R.filter(isOdd, R.pluck('counter', data))));
Ramda with currying and composition
var result = R.pipe( R.pluck('counter'), R.filter(isOdd), R.map(square), R.filter(lessThanThreeDigits) )(data);
Immutable
var result = Immutable .Seq(data) .map(({ counter }) => counter) .filter(isOdd) .map(square) .filter(lessThanThreeDigits) .toJS()

Run results for: Ramda vs. Lodash + Immutable

Compares performance on the same task using Lodash vs two styles of Ramda vs two styles of "native" Javascript. In all cases the task is pulling "counter" property from each item in an array, filtering out odd items, squaring them, then returning those squared values that have less than two digits.

Lodash

Ramda without relying on currying or composition

Ramda with currying and composition

Immutable