Replace immer with mutative

[aaroniker]

Hi there,
using zustand for years and really enjoy working with it!

Seems like immer is not maintained that well anymore:

• https://github.com/immerjs/immer

What do you think about excluding zustand/middleware/immer from the zustand package?

Just replaced it at my project with mutative:

• https://github.com/unadlib/mutative
• https://github.com/mutativejs/zustand-mutative

Usage is the same ✨

Benchmarks:

• https://github.com/unadlib/mutative?tab=readme-ov-file#mutative-vs-immer-performance
• https://github.com/mutativejs/zustand-mutative?tab=readme-ov-file#benchmarks

[dai-shi]

What do you think about excluding zustand/middleware/immer from the zustand package?

I generally like the idea. We don't need to rush though. It will be left for a while. Feel free to use any alternatives.

[dbritto-dev]

I got an implementation for this where you can use immer or mutative

[aaroniker]

@dai-shi @dbritto-dev wdyt about maintaining each middleware as a dedicated package, still within a monorep? via workspaces
with a super minimal setup, so they will have their own (peer) dependencies for example

[dbritto-dev]

@aaroniker I mean standalone middleware no peer deps and you can use immer or mutative

Here you go: https://stackblitz.com/edit/vitejs-vite-setc1b?file=README.md

[dbritto-dev]

@aaroniker I can release it as a dedicated package but I'd like to replace immer middleware with mutable middleware

[dai-shi]

wdyt about maintaining each middleware as a dedicated package, still within a monorep?

We maintain those packages in https://github.com/zustandjs.