Run results for: Object.assign vs _.defaultsDeep vs Object Destructuring

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36

Browser: Chrome 122

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Object.assign

185K/s

Destructuring

181K/s

_.defaults

156K/s

View exact numbers

Test name	Executions per second
✓ Object.assign	185,403 Ops/sec
Destructuring	180,581 Ops/sec
_.defaults	156,048 Ops/sec

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

var schema = {
  name: undefined,
  password: undefined,
  photo: undefined,
  role: 1,
  level: 1,
  resPass: false,
  stories: {
  	one: 'Hola mundo',
    two: false,
    three: false
  }
}

var user = {
  name: "Jacob",
  password: 123,
  photo: "img.jpg",
  stories: {
    two: "Adios mundo"
  }
}

Tests:

Object.assign
let objectAssign = Object.assign({}, schema, user); objectAssign.stories = Object.assign(schema.stories, user.stories); console.log(objectAssign);
_.defaults
const defaultsDeep = _.defaultsDeep(schema, user); console.log(defaultsDeep);
Destructuring
const obj = { ...schema, ...user, stories: { ...schema.stories, ...user.stories } }; console.log(obj);