Run results for: Set Intersection using has and delete vs. Native Set Intersection

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:139.0) Gecko/20100101 Firefox/139.0

Browser: Firefox 139

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: 10 months ago

Test name	Executions per second
Javascript Set Intersection	17515.4 Ops/sec
Set Intersection using has and delete	5670.4 Ops/sec

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.21/lodash.min.js'></script>

Script Preparation code:

const first = new Set([...Array(10000)].map(it => String(~~(Math.random() * 10000))));
const second = new Set([...Array(10000)].map(it => String(~~(Math.random() * 200000))));

class MySet extends Set {
  intersection(other) {
    other.forEach((element) => {
      if (this.has(element)) {
        return;
      }
      this.delete(element);
    });
    return this;
  }
}

const firstSet = new MySet(first);
const secondSet = new MySet(second);

Tests:

Javascript Set Intersection
first.intersection(second)
Set Intersection using has and delete
firstSet.intersection(second)

Run results for: Set Intersection using has and delete vs. Native Set Intersection

Javascript Set Intersection

Set Intersection using has and delete