Run results for: Object merge vs library merge Tomek

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36 OPR/58.0.3135.90

Browser: Opera 58

Operating system: Windows

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
Object.assign	3556474.0 Ops/sec
jQuery extend	698517.2 Ops/sec
Immutable merge	895251.8 Ops/sec
Ramda merge	344459.0 Ops/sec
Spread operator	20708760.0 Ops/sec

HTML Preparation code:

<script type='text/javascript' src='https://cdnjs.cloudflare.com/ajax/libs/immutable/3.8.2/immutable.min.js'></script>
<script type='text/javascript' src='https://cdnjs.cloudflare.com/ajax/libs/ramda/0.25.0/ramda.min.js'></script>
<script type='text/javascript' src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js'></script>
<script type='text/javascript' src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.js'></script>

Tests:

Object.assign
var params = { a: "hello", b: true, c: 7 }; var other = Object.assign({}, { b: false, d: [ 1,2 ] }, params);
jQuery extend
var params = [1,2,3,4,5,6]; var other = $.extend({}, [7,8,9,10], params);
Immutable merge
var params = Immutable.fromJS([1,2,3,4,5,6]); var other = params.merge([7,8,9,10]);
Ramda merge
var params = [1,2,3,4,5,6]; var other = R.merge([7,8,9,10], params);
Spread operator
var params = [1,2,3,4,5,6]; var params2 = [7,8,9,10]; var output = [...params, ...params2]

Run results for: Object merge vs library merge Tomek

Object.assign

jQuery extend

Immutable merge

Ramda merge

Spread operator