Run results for: Lodash.js vs Javascript (meanBy)

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.36

Browser: Chrome 136

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Native	116.8 Ops/sec
Lodash	138.3 Ops/sec

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.4/lodash.min.js"></script>

Script Preparation code:

const data = Array.from({ length: 1_000_000 }, (_, i) => ({ value: i % 100 }));

function nativeMeanBy(array, key) {
  const sum = array.reduce((acc, obj) => acc + obj[key], 0);
  return sum / array.length;
}

function lodashMeanBy(array, key) {
  return _.meanBy(array, key);
}

Tests:

Native
nativeMeanBy(data, 'value')
Lodash
lodashMeanBy(data, 'value')

Run results for: Lodash.js vs Javascript (meanBy)

Native

Lodash