Run results for: Ramda vs. Lodash vs. VanillaJS

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 (iPhone; CPU iPhone OS 17_7 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.7 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 17

Operating system: iOS 17.7

Device Platform: Mobile

Date tested: one year ago

VanillaJS functional style

6K/s

Ramda without relying on currying or composition

1K/s

Ramda with currying and composition

1K/s

Lodash

884/s

VanillaJS procedural

713/s

View exact numbers

Test name	Executions per second
✓ VanillaJS functional style	5,782 Ops/sec
Ramda without relying on currying or composition	1,254 Ops/sec
Ramda with currying and composition	1,213 Ops/sec
Lodash	884 Ops/sec
VanillaJS procedural	713 Ops/sec

HTML Preparation code:

<script src="https://cdnjs.cloudflare.com/ajax/libs/ramda/0.27.0/ramda.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js"></script>

Script Preparation code:

var data = [];
for (var i = 0; i < 10000; i++) {
     data.push({ counter: i });
}

function isOdd(num) {
  return num % 2 === 1;
}

function square(num) {
  return num * num;
}

function lessThanThreeDigits(num) {
  return num.toString().length < 3;
}

var expected = data.map(o => o.counter).filter(isOdd).map(square).filter(lessThanThreeDigits);

Tests:

Lodash
var result = _.chain(data) .map(d => _.get(d, '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);
VanillaJS functional style
var result = data.map(o => o.counter).filter(isOdd).map(square).filter(lessThanThreeDigits);
VanillaJS procedural
var result = new Array(); for (var i = 0; i < data.length; i++) { var c = data[i].counter; if (isOdd(c)) { var r = square(c); if (lessThanThreeDigits(r)) { result.push(r); } } }