Run results for: Spread operator vs Immutable.js performance for common use cases

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.107 Safari/537.36

Browser: Chrome 92

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

HTML Preparation code:

<script
  src="https://cdnjs.cloudflare.com/ajax/libs/immutable/3.8.2/immutable.js"
  crossorigin="anonymous"></script>

Script Preparation code:

var obj = { b:"hello", c: true, d:7 };
var arr = ['a', 'b', 'c'];
var map = Immutable.Map(obj);
var list = Immutable.List(arr);

Tests: