Run results for: lodash clone vs object.assign vs for vs spread

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.111 Safari/537.36

Browser: Chrome 86

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
lodash clone	473738.1 Ops/sec
object.assign	1383113.1 Ops/sec
for	352297.3 Ops/sec
spread	7071207.0 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 obj =  {
        "tid": 1,
        "cid": 0,
        "uid": 0,
        "mainPid": 0,
        "postcount": 0,
        "viewcount": 0,
        "postercount": 0,
        "deleted": 0,
        "locked": 0,
        "pinned": 0,
        "timestamp": 0,
        "upvotes": 0,
        "downvotes": 0,
        "lastposttime": 0,
        "deleterUid": 0,
        "timestampISO": "",
        "lastposttimeISO": "",
        "votes": 0,
        "teaserPid": null
    };

Tests:

lodash clone
var c = _.clone(obj);
object.assign
var c = Object.assign({}, obj);
for
var copy = {}; for (const k in obj) { copy[k] = obj[k]; }
spread
var copy = { ...obj };