Run results for: Map vs ImmutableJs copy

Run details:

User agent: Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 YaBrowser/18.9.0.3409 Yowser/2.5 Safari/537.36

Browser: Yandex Browser 18

Operating system: Windows 8.1

Device Platform: Desktop

Date tested: 6 years ago

Test name	Executions per second
ES	110681.6 Ops/sec
Immutable	707412.4 Ops/sec

HTML Preparation code:

<script type='text/javascript' src='https://cdnjs.cloudflare.com/ajax/libs/immutable/3.8.2/immutable.min.js'></script>

Script Preparation code:

function createLargeObject() {
  return {
    a: "oaishdjoghaisioghagsiohgiosdhgaioshdhgiashdhgohasdghasdiog",
    b: "asiohdjoghasdgioasdhiosdghasohgaoihsdhgioasdhgsdiohgsdhiog",
    c: "oasihdgoashdgiohasdhgasdoghsdihgohasdgsihgasdioghsdigiogga"
  }
}

var map1 = new Map();
for (i = 0; i < 10000; i++) {
  map1.set(i, createLargeObject());
}

var map2 = Immutable.Map(map1)

Tests:

ES
map1 = Object.assign({}, map1, { 1001: createLargeObject() });
Immutable
map2 = map2.set(1001, createLargeObject());

Run results for: Map vs ImmutableJs copy

Tests adding an element to a map vs an immutable js map.

ES

Immutable