Benchmark: Immer@4 vs Spread Reduce

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/immer@4.0.0/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)

Tests:

immer
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, {})
Spread
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) });

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
immer
Mutate
Spread
immer pull up

Fastest: N/A

Slowest: N/A

ⓘ Get performance results from real users on your website with Request Metrics.

Website Performance Monitoring by Request Metrics

Latest run results:

Run details: (Test run date: 3 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:82.0) Gecko/20100101 Firefox/82.0

Browser/OS: Firefox 82 on Windows

View result in a separate tab

Test name	Executions per second
immer	2305.7 Ops/sec
Mutate	1096856.0 Ops/sec
Spread	34743.4 Ops/sec
immer pull up	27485.8 Ops/sec

Immer@4 vs Spread Reduce (version: 0)

Comparing performance of: immer vs Mutate vs Spread vs immer pull up

Created: 4 years ago by: Guest

Jump to the latest result

immer

Mutate

Spread

immer pull up

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A