Run results for: object spread vs immutable-js set2

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3626.121 Safari/537.36

Browser: Chrome 72

Operating system: Windows

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
object spread set	3.5 Ops/sec
immutable-js set	783.4 Ops/sec
object spread set + get	3.3 Ops/sec
immutable-js set + get	587.3 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 set
let obj = {}; for(i=0;i<1000;i++){ const key = 'key'+i const value = 'value'+i obj = {...obj, [key]: {key, value}} }
immutable-js set
let obj = Immutable.Map(); for(i=0;i<1000;i++){ const key = 'key'+i const value = 'value'+i obj = obj.set(key, {key, value}) }
object spread set + get
let obj = {}; let v = null for(i=0;i<1000;i++){ const key = 'key'+i const value = 'value'+i obj = {...obj, [key]: {key, value}} } for(i=0;i<1000;i++){ const key = 'key'+i v = obj[key] }
immutable-js set + get
let obj = Immutable.Map(); let v = null for(i=0;i<1000;i++){ const key = 'key'+i const value = 'value'+i obj = obj.set(key, {key, value}) } for(i=0;i<1000;i++){ const key = 'key'+i v = obj.get(key) }

Run results for: object spread vs immutable-js set2

object spread set

immutable-js set

object spread set + get

immutable-js set + get