Run results for: Beast ramda leaves no chance for native vs 2

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 11_1_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.182 Safari/537.36

Browser: Chrome 88

Operating system: Mac OS X 11.1.0

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
Ramda	309.0 Ops/sec
Native	51.4 Ops/sec
Native2	40.6 Ops/sec

HTML Preparation code:

<script src="//cdnjs.cloudflare.com/ajax/libs/ramda/0.27.1/ramda.min.js"></script>

Script Preparation code:

var ramdaCount = R.pipe(
  R.map(R.o(Math.round, R.multiply(50))),
  R.filter(R.modulo(R.__, 2)),
  R.countBy(R.identity)
);

var nativeCount = vals => 
  vals
  	.map(v => Math.round(v * 50))
  	.filter(v => v % 2)
  	.reduce((acc, cur) => { acc[cur] = (acc[cur] | 0) + 1; return acc; }, {});

var nativeRes ={};    
var nativeCount2 = vals =>     
	vals
  	.map(v => Math.round(v * 50))
  	.filter(v => v % 2)   
    .forEach(item => { nativeRes[item] = (nativeRes[item] | 0) + 1 });   

var arr = Array.from({length: 100000}, Math.random);

Tests:

Ramda
ramdaCount(arr)
Native
nativeCount(arr)
Native2
nativeCount2(arr)

Run results for: Beast ramda leaves no chance for native vs 2

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Ramda

Native

Native2