Run results for: object spread vs immutable-js set vs Map 3

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.0 Safari/605.1.15

Browser: Safari 17

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 6 months ago

Test name	Executions per second
Spread	72.0 Ops/sec
ImmutableJS	3715.1 Ops/sec
Map	13728.5 Ops/sec
Map with converting to Object after the operations	7625.0 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:

Spread
let obj = {}; for(i=0;i<1000;i++){ const key = 'key'+i const value = 'value'+i obj = {...obj, [key]: {key, value}} }
ImmutableJS
let obj = Immutable.Map(); for(i=0;i<1000;i++){ const key = 'key'+i const value = 'value'+i obj = obj.set(key, {key, value}) }
Map
const obj = new Map(); for(i=0;i<1000;i++){ const key = 'key'+i const value = 'value'+i obj.set(key, {key, value}) }
Map with converting to Object after the operations
const obj = new Map(); for(i=0;i<1000;i++){ const key = 'key'+i const value = 'value'+i obj.set(key, {key, value}) } Object.fromEntries(obj)

Run results for: object spread vs immutable-js set vs Map 3

Spread

ImmutableJS

Map

Map with converting to Object after the operations