Array is Empty: benchmark ways

isEmptyArray.js

const Benchmark = require('benchmark');

const suite = new Benchmark.Suite();

console.log('benchmark');

const emptyArray = [];
const nonEmptyArray = [1, 2, 3];

suite
  .add('Using length property', function() {
    emptyArray.length === 0;
  })
  .add('Using Array.isArray and length', function() {
    Array.isArray(emptyArray) && emptyArray.length === 0;
  })
  .add('Using ! operator', function() {
    !emptyArray.length;
  })
  .add('Using JSON.stringify', function() {
    JSON.stringify(emptyArray) === '[]';
  })
  .on('cycle', function(event) {
    console.log(String(event.target));
  })
  .run({ async: true });

/*
Chip: Apple M1 Max
Memopry: 32 GB
*/

/*
Using length property x 1,034,364,853 ops/sec ±0.16% (101 runs sampled)
Using Array.isArray and length x 1,028,668,071 ops/sec ±0.28% (96 runs sampled)
Using ! operator x 1,033,705,825 ops/sec ±0.18% (100 runs sampled)
Using JSON.stringify x 18,834,958 ops/sec ±0.19% (96 runs sampled)
*/