Run results for: object spread vs immutable-js map, larger

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/109.0.0.0 Safari/537.36

Browser: Chrome 109

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
object spread	0.1 Ops/sec
immutable-js	266.6 Ops/sec

HTML Preparation code:

<script src="https://cdnjs.cloudflare.com/ajax/libs/immutable/3.8.2/immutable.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/immutability-helper@2.7.0/index.min.js"></script>

Tests:

object spread
let obj = {}; for (let i = 0; i < 10000; i++){ const key = 'key'+i const value = 'value'+i obj = {...obj, [key]: {key, value}} }
immutable-js
let obj = Immutable.Map(); for (let i = 0; i < 10000; i++){ const key = 'key'+i const value = 'value'+i obj = obj.set(key, {key, value}) }