bench.js

const Benchmark = require('benchmark');

const suite = Benchmark.Suite('equal')
const cmp = Array.from({ length: 10000 }, (_, i) => i.toString());
const cmpEqual = [...cmp];
const cmpNotEqual = Array.from({ length: 10000 }, (_, i) => i.toString(16));
const cmpDifferentLength = Array.from({ length: 10000 }, (_, i) => i.toString(16));
const cmpShort = Array.from({ length: 10 }, (_, i) => i.toString());
const cmpShortEqual = [...cmpShort];

function joinEqual(a, b) {
  return a.join() === b.join();
}

function iterativeEqual(a, b) {
  if (a === b) return true;
  if (a.length !== b.length) return false;
  for (let i = 0; i < a.length; i++) {
    if (a[i] !== b[i]) {
      return false;
    }
  }
  return true;
}

suite

.add('joinEqual/short', function() {
  joinEqual(cmpShort, cmpShortEqual);
})
.add('joinEqual/equal', function() {
  joinEqual(cmp, cmpEqual);
})
.add('joinEqual/notEqual', function() {
  joinEqual(cmp, cmpNotEqual);
})
.add('joinEqual/differentLength', function() {
  joinEqual(cmp, cmpDifferentLength);
})

.add('iterativeEqual/short', function() {
  iterativeEqual(cmpShort, cmpShortEqual);
})
.add('iterativeEqual/equal', function() {
  iterativeEqual(cmp, cmpEqual);
})
.add('iterativeEqual/notEqual', function() {
  iterativeEqual(cmp, cmpNotEqual);
})
.add('iterativeEqual/differentLength', function() {
  iterativeEqual(cmp, cmpDifferentLength);
})

.on('cycle', function(event) {
  console.log(String(event.target));
})
// run async
.run({ 'async': true });