Run results for: Beast ramda leaves no chance for native

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 11_2_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.182 Safari/537.36

Browser: Chrome 88

Operating system: Mac OS X 11.2.1

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
Ramda - Count	1024.4 Ops/sec
Native - Count	501.0 Ops/sec
Ramda - Count and map object	1023.0 Ops/sec
Native - Count and map object	499.8 Ops/sec
Native - Count and map object using entries	491.1 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 ramdaConcatTimes = R.map(R.o(R.concat(R.__, ' times'), String))

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 nativeConcatTimes = counts => Object.keys(counts).reduce((acc, key) => { acc[key] = String(counts[key]) + ' times'; return acc }, {});

var nativeConcatTimesUsingEntries = counts => Object.fromEntries(Object.entries(counts).map(([key, val]) => [key, String(val) + ' times']));

var arr = Array.from({length: 10000}, Math.random)

const ramdaRes = ramdaConcatTimes(ramdaCount(arr))
const nativeRes = nativeConcatTimes(nativeCount(arr))
const otherNativeRes = nativeConcatTimesUsingEntries(nativeCount(arr))

if (!R.equals(ramdaRes, nativeRes) || !R.equals(nativeRes, otherNativeRes)) {
  throw new Error('different results')
}

Tests:

Ramda - Count
ramdaCount(arr)
Native - Count
nativeCount(arr)
Ramda - Count and map object
R.o(ramdaConcatTimes, ramdaCount)(arr)
Native - Count and map object
nativeConcatTimes(nativeCount(arr))
Native - Count and map object using entries
nativeConcatTimesUsingEntries(nativeCount(arr))

Run results for: Beast ramda leaves no chance for native

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Ramda - Count

Native - Count

Ramda - Count and map object

Native - Count and map object

Native - Count and map object using entries