LEleeoniya·Dec 22, 2023
for those considering Immer, check out Mutative or Limu instead (both much faster)
https://github.com/unadlib/mutative
https://github.com/tnfe/limu
In Deep cloning objects in JavaScripttnfe
limu
JavaScript2023–2023
tnfe / limu
limu
High performance immutable lib alternative to immer with the same api, based on shallow copy on read and mark modified on write mechanism.
2Distinct people
3Mentions
0Explicit recommenders
254GitHub stars
What to know before exploring
What it is
High performance immutable lib alternative to immer with the same api, based on shallow copy on read and mark modified on write mechanism.
GitHub
Where it is used
No documented product use has been verified yet.
What people are saying
No recommendation phrase was found in the indexed comments.
No classified warning is attached to this page. Read the discussions before treating silence as approval.
Also in these discussions
- unadlib/mutative · linked in 2 of the same discussions
Mentioned in the same Hacker News threads. That is not proof they are substitutes.
This week on Hacker News
Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 3:56:07 PM UTC.
No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.
Mentions over time
HN mentions by week3 dated mentions
Observed mentions: 2023-10-21 16:28:43 UTC to 2023-12-22 03:39:36 UTC. Weeks start Monday, UTC.
Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.
View mention counts and date ranges
| Period | Start (UTC) | End (exclusive, UTC) | Mentions | Submissions | Comments |
|---|---|---|---|---|---|
| Oct 16 | 2023-10-16 00:00:00 UTC | 2023-10-23 00:00:00 UTC | 2 | 1 | 1 |
| Oct 23 | 2023-10-23 00:00:00 UTC | 2023-10-30 00:00:00 UTC | 0 | 0 | 0 |
| Oct 30 | 2023-10-30 00:00:00 UTC | 2023-11-06 00:00:00 UTC | 0 | 0 | 0 |
| Nov 6 | 2023-11-06 00:00:00 UTC | 2023-11-13 00:00:00 UTC | 0 | 0 | 0 |
| Nov 13 | 2023-11-13 00:00:00 UTC | 2023-11-20 00:00:00 UTC | 0 | 0 | 0 |
| Nov 20 | 2023-11-20 00:00:00 UTC | 2023-11-27 00:00:00 UTC | 0 | 0 | 0 |
| Nov 27 | 2023-11-27 00:00:00 UTC | 2023-12-04 00:00:00 UTC | 0 | 0 | 0 |
| Dec 4 | 2023-12-04 00:00:00 UTC | 2023-12-11 00:00:00 UTC | 0 | 0 | 0 |
| Dec 11 | 2023-12-11 00:00:00 UTC | 2023-12-18 00:00:00 UTC | 0 | 0 | 0 |
| Dec 18 | 2023-12-18 00:00:00 UTC | 2023-12-25 00:00:00 UTC | 1 | 0 | 1 |
What Hacker News says
3 sourcesLimu, the fastest immutable data JavaScript lib was borned
2 points · Open discussionStrongly recommend trying [limu](https://github.com/tnfe/limu)，it is now the fastest immutable data js lib，and it is also production environment available.
//You can verify through the following tests, and you are also welcome to add more performance test cases
```bash
git checkout https://github.com/tnfe/limu.git
cd benchmark
npm i
## Then execute the following commands separately
npm run s1
npm run s2
npm run s3
npm run s4
```
The results of one set of performance tests
At the same time, the number of single test cases has increased to 500+, with a coverage rate of '95+' (the results can be viewed by executing NPM run tests in the root directory)
In Limu, the fastest immutable data JavaScript lib was borned