Run results for: native intersect vs lodash intersect small and large 3

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.77 Safari/537.36

Browser: Chrome 91

Operating system: Linux

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
native small	703033.6 Ops/sec
lodash small	1239836.1 Ops/sec
native big	15180.4 Ops/sec
lodash big	13294.9 Ops/sec

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.15/lodash.min.js'></script>

Script Preparation code:

function intersect(...array) {
  const sets = array.map(a => new Set(a));
  const s0 = sets[0];
  for (const item of s0.values()) {
    for(let i = 1; i < array.length; i++) {
      const s = sets[i];
      if (!s.has(item)) {
        s0.delete(item);
        break;
      }
    }
  }
  return [...s0];
}

var a1 = [];
var a2 = [];
var a3 = [];
for (var i = 0; i < 10; i++) {
  a1.push(~~(Math.random() * 10))
  a2.push(~~(Math.random() * 10))
  a3.push(~~(Math.random() * 10))
}

var a4 = [];
var a5 = [];
var a6 = [];
for (var i = 0; i < 1000; i++) {
  a4.push(~~(Math.random() * 100))
  a5.push(~~(Math.random() * 100))
  a6.push(~~(Math.random() * 100))
}

Tests:

native small
intersect(a1, a2, a3);
lodash small
_.intersection(a1, a2, a3);
native big
intersect(a4, a5, a6);
lodash big
_.intersection(a4, a5, a6);

Run results for: native intersect vs lodash intersect small and large 3

native small

lodash small

native big

lodash big