Benchmark: Array Intersection vs. Set Intersection vs. Lodash

HTML Preparation code:

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

Script Preparation code:

var first = [...Array(100)].map(it => ~~(Math.random() * 1000));
var second = [...Array(20)].map(it => ~~(Math.random() * 1000));

Tests:

Javascript Set intersection
const firstSet = new Set(first); const secondSet = new Set(second); new Set([...firstSet].filter(item => secondSet.has(item)));
Lodash intersection
_.intersection(first, second)
Javascript intersection
first.filter(it => second.includes(it))

Rendered benchmark preparation results:

Previous results

Test case name	Result
Javascript Set intersection
Lodash intersection
Javascript intersection

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Latest run results:

Run details: (Test run date: 3 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.97 Safari/537.36

Browser/OS: Chrome 83 on Windows

Test name	Executions per second
Javascript Set intersection	194850.8 Ops/sec
Lodash intersection	277950.4 Ops/sec
Javascript intersection	95951.9 Ops/sec

Array Intersection vs. Set Intersection vs. Lodash (version: 0)