Run results for: Immer vs Spread Reduce9

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36

Browser: Chrome 125

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 11 months ago

Test name	Executions per second
immer	32824.3 Ops/sec
Mutate	2419474.2 Ops/sec
Spread	549029.3 Ops/sec
immer pull up	133659.7 Ops/sec

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/immer@3.1.3/dist/immer.umd.min.js"></script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

AخA
 
<script src="https://cdn.jsdelivr.net/npm/immer@3.1.3/dist/immer.umd.min.js"></script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

data = _.range(100)

 
data = _.range(100)

Tests:

immer

const reducer = immer.produce((draft, curr) => { draft[0] = 0; });
const answer = data.reduce(reducer, {})

 
const reducer = immer.produce((draft, curr) => { draft[0] = 0; });const answer = data.reduce(reducer, {})

Mutate

const reducer = (draft, curr) => { draft[0] = 0; return draft; };
const answer = data.reduce(reducer, {})

 
const reducer = (draft, curr) => { draft[0] = 0; return draft; };const answer = data.reduce(reducer, {})

Spread

const answer = data.reduce((acc, curr) => ({
  ...acc,
  0: 0,
}), {});

 
const answer = data.reduce((acc, curr) => ({  ...acc,  0: 0,}), {});

immer pull up

const answer = immer.produce({}, draft => { data.reduce((acc, curr) => { acc[0] = 0; return acc }, draft) });

 
const answer = immer.produce({}, draft => { data.reduce((acc, curr) => { acc[0] = 0; return acc }, draft) });