Run results for: Immer (setAutoFreeze(false)) vs shallow vs ramda lens vs samless immutable111

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36

Browser: Chrome 69

Operating system: Mac OS X 10.13.4

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
immer	25845.5 Ops/sec
shallow copy	40902.6 Ops/sec
ramda lens	61249.7 Ops/sec
samless	24461.7 Ops/sec

HTML Preparation code:

<script src="https://unpkg.com/immer/dist/immer.umd.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/ramda/0.25.0/ramda.min.js"></script>
<script src="https://unpkg.com/seamless-immutable@7.1.4/seamless-immutable.production.min.js"></script>

Script Preparation code:

var { compose, over, set, lensPath, append } = R

var INITIAL_DATA = { items: {}, count: 0, keys: [] }

for (var index = 0; index < 100; index++) {
  INITIAL_DATA.items[index] = { id: index, name: `ITEM-${index}`, value: Math.random() }
  INITIAL_DATA.count++
  INITIAL_DATA.keys.push(index)
}

var NEW_ITEM_ID = INITIAL_DATA.count +1

var produce = immer.default
immer.setAutoFreeze(false)

var INITIAL_DATA_I = Immutable({ items: INITIAL_DATA.items, count: INITIAL_DATA.count, keys: Immutable(INITIAL_DATA.keys)})

Tests:

immer
data = produce(INITIAL_DATA, draft => { draft.items[NEW_ITEM_ID] = { id: NEW_ITEM_ID, name: 'ITEM-NEW', value: 0 } draft.counter++ draft.keys.push(NEW_ITEM_ID) })
shallow copy
data = { ...INITIAL_DATA, items: { ...INITIAL_DATA.items, [NEW_ITEM_ID]: { id: NEW_ITEM_ID, name: 'ITEM-NEW', value: 0 } }, count: INITIAL_DATA.count +1, keys: [ ...INITIAL_DATA.keys, NEW_ITEM_ID] }
ramda lens
data = compose( over(lensPath(["keys"]), append(NEW_ITEM_ID)), over(lensPath(["count"]), x => x + 1), set(lensPath(["items", NEW_ITEM_ID]), { id: NEW_ITEM_ID, name: "ITEM-NEW", value: 0 }) )(INITIAL_DATA);
samless
data = INITIAL_DATA_I .setIn(['keys'], NEW_ITEM_ID) .setIn(['count'],INITIAL_DATA_I.count +1) .setIn(['items', NEW_ITEM_ID], { id: NEW_ITEM_ID, name: 'ITEM-NEW', value: 0 })

Run results for: Immer (setAutoFreeze(false)) vs shallow vs ramda lens vs samless immutable111

immer

shallow copy

ramda lens

samless