Run results for: Lodash vs Native reduce + Object.keys for collections

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36

Browser: Chrome 122

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Benchmark engine: Benchmark.js

Lodash

1.5M/s

Native + pickBy

451K/s

View exact numbers

Test name	Executions per second
✓ Lodash	1,486,534 Ops/sec
Native + pickBy	451,152 Ops/sec

HTML Preparation code:

<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.4/lodash.min.js"></script>

Script Preparation code:

window.obj = {};

for (var i = 0, len = 1000; i < len; i++) {
  var arr = []
  obj['key' + i] = arr
  for (var n = 0, len = 10; n < len; n++) {
    arr.push({ ['key' + n]: n });
  }
}

Tests:

Lodash
_.reduce(obj, (acc, val, key) => { if(val) { acc.push(key); } return acc; }, [])
Native + pickBy
Object.keys(_.pickBy(obj, (item) => !!item));