Run results for: Immerjs vs Immutable Perf Test

Run details:

User agent: Mozilla/5.0 (Android 13; Mobile; rv:132.0) Gecko/132.0 Firefox/132.0

Browser: Firefox Mobile 132

Operating system: Android

Device Platform: Mobile

Date tested: one month ago

Test name	Executions per second
immer	1555.1 Ops/sec
Immutable	392.8 Ops/sec

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/immer/dist/immer.umd.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/immutable/3.8.2/immutable.js"></script>

Script Preparation code:

//const { fromJS } = require('immutable');
var data = { items: {}, count: 0, keys: [] }

for (let index = 0; index < 100; index++) {
  data[index] = { id: index, name: `ITEM-${index}`, value: Math.random() }
  data.count++
  data.keys.push(index)
}

var NEW_ITEM_ID = data.count +1

var produce = immer.default

var im = Immutable.fromJS(data);

Tests:

immer
data = produce(data, draft => { draft.items[NEW_ITEM_ID] = { id: NEW_ITEM_ID, name: 'ITEM-NEW', value: 0 } draft.counter++ draft.keys.push(NEW_ITEM_ID) })
Immutable
var im = Immutable.fromJS(data); im = im.set('items', im.get('items').set(NEW_ITEM_ID, { id: NEW_ITEM_ID, name: 'ITEM-NEW', value: 0 })); im = im.set('count', im.count +1); im = im.set('keys', im.get('keys').push(NEW_ITEM_ID));