Run results for: Lodash DifferenceWith vs Native

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

Native

1.8M/s

Lodash.js filter

79K/s

View exact numbers

Test name	Executions per second
✓ Native	1,768,196 Ops/sec
Lodash.js filter	78,668 Ops/sec

HTML Preparation code:

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

Script Preparation code:

var oldArr = [
  {
    "id": 52
  },
  {
    "id": 76
  },
  {
    "id": 13
  },
  {
    "id": 96
  },
  {
    "id": 27
  },
  {
    "id": 8
  },
  {
    "id": 23
  },
  {
    "id": 63
  },
  {
    "id": 25
  }
]

var newArr = [
{
    "id": 52
  },
  {
    "id": 76
  },
  {
    "id": 13
  },
  {
    "id": 96
  },
  {
    "id": 27
  },
  {
    "id": 8
  },
  {
    "id": 23
  },
  {
    "id": 63
  },
  {
    "id": 25
  },
  {
    "id": 1
  },
]

Tests:

Native
newArr.reduce((ids, {id}) => { return ids.concat( !oldArr.some(oldItem => oldItem.id === id) ? id : [] ); }, [])
Lodash.js filter
_.differenceWith(newArr, oldArr, _.isEqual);