Benchmarking object destructuring

access-vs-destructuring.js

const Benchmark = require('benchmark')
const _ = require('lodash');

const suite = new Benchmark.Suite

const obj = {
  value: 42,
  name: 'jean',
  not: 'taked'
};

const arr = [obj, Object.assign({}, obj), Object.assign({}, obj), Object.assign({}, obj)];

suite
.add('access property', () => {
  for (const o of arr) {
    const res = {
      value: o.value,
      name: o.name
    }
  }
})
.add('destructuring', () => {
  for (const o of arr) {
    const { value, name } = o;

    const res = {
      value,
      name
    }
  }
})
.on('cycle', function(event) {
  console.log(String(event.target));
})
.on('complete', function() {
  console.log('Fastest is ' + this.filter('fastest').map('name'));
})
.run();

results.txt

$ node --version
v12.13.0
$ node access-vs-destructuring.js
  access property x 102,225,644 ops/sec ±0.46% (90 runs sampled)
  destructuring x 64,626,511 ops/sec ±1.24% (95 runs sampled)
 Fastest is access property