Run results for: Lodash intersection vs some+includes

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.36

Browser: Chrome 135

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Lodash intersec	12754.5 Ops/sec
some+includes	1042.5 Ops/sec

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

function makeid(len = 5) {
  var text = "";
  var possible = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";

  for (let i = 0; i < len; i++)
    text += possible.charAt(Math.floor(Math.random() * possible.length));

  return text;
}

var arr1 = []
var arr2 = []

for (let i = 0; i < 1000; i++) {
	arr1.push(makeid())
  	arr2.push(makeid())
}

// To ensure that both arrays has at least 1 element in common
arr1[arr1.length - 1] = arr2[0]

Tests:

Lodash intersec
_.intersection(arr1, arr2).length > 0
some+includes
arr1.some(el => arr2.includes(el))

Run results for: Lodash intersection vs some+includes

This benchmark compares some algorithms to check if there is an element from an array into another

Lodash intersec

some+includes