Run results for: Compare clone object: Spread vs Lodash vs Object assign

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.0 Safari/605.1.15

Browser: Safari 16

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
Spread	889.0 Ops/sec
Lodash clone	632.2 Ops/sec
Lodash cloneDeep	54.9 Ops/sec
Object assign	849.5 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 posts = {};
for (var i = 0; i < 10000; i++) {
    posts[i] = {
        id: i,
        content: "test posts " + i,
        commentsCount: 1,
        comments: {
            meta: {
                total: 1,
            },
            list: [{
                content: "just a comment"
            }]
        }
    }
}

Tests:

Spread
var newPosts = {...posts};
Lodash clone
var newPosts = _.clone(posts);
Lodash cloneDeep
var newPosts = _.cloneDeep(posts);
Object assign
var newPosts = Object.assign({}, posts)

Run results for: Compare clone object: Spread vs Lodash vs Object assign

Spread

Lodash clone

Lodash cloneDeep

Object assign