Run results for: Array.prototype.concat vs spread operator vs lodash concat

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.131 Safari/537.36

Browser: Chrome 74

Operating system: Mac OS X 10.13.6

Device Platform: Desktop

Date tested: 5 years ago

HTML Preparation code:

<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.10/lodash.min.js"></script>

Script Preparation code:

var a = [1, 2, 3]
var b = [4, 5, 6]

Tests: