Run results for: Immutable.JS get vs object access vs map get

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.0.0 Safari/537.36 Edg/113.0.1774.57

Browser: Chrome 113

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Object property access	91719.9 Ops/sec
ImmutableJS get	125123.4 Ops/sec
Map get	123097.0 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>

Script Preparation code:

window.obj = {}
window.objImmutable = Immutable.Map();
window.map = new Map();

for(i=0;i<100;i++){
  const key = 'key'+i
  const value = 'value'+i
  window.obj[key] = value;
  window.objImmutable.set(key, value);
  window.map.set(key, value);
}

Tests:

Object property access
for(i=0;i<100;i++){ const key = 'key'+i window.obj[key] }
ImmutableJS get
for(i=0;i<100;i++){ const key = 'key'+i window.objImmutable.get(key); }
Map get
for(i=0;i<100;i++){ const key = 'key'+i window.map.get(key); }

Run results for: Immutable.JS get vs object access vs map get

Object property access

ImmutableJS get

Map get