Daishi Kato

React library author, maintaining three state management libraries, Zustand🐻, Jotai👻, Valtio🧙, and React framework, Waku⛩️.

[Daishi Kato @dai_shi]

Behind the APIs: How Zustand, Jotai, and Valtio Were Born
My Talk at React Paris 2026
https://t.co/sW5XfwmCIo

[Waku @wakujs]

Waku 1.0-RC is here! ⛩️

The minimal React framework, now with:

- fully type-safe navigation API
- experimental instant navigation

Final call for feedback before v1.0! 🚩

https://t.co/KC71g8y4SQ

[Jotai @jotaijs]

Jotai v2.20.3 is released. 🪄

This patch fixes a bug in `unwrap` util.

Enjoy! 👻

https://t.co/kn6z6WTW4H

[Daishi Kato @dai_shi]

🐻 Zustand v5.0.15 is out!
https://t.co/9MlzjE6h1n

[Daishi Kato @dai_shi]

Just released Waku ⛩️ v1.0.0-beta.9!

One more beta release before rc.
https://t.co/4E8mq469Dr

[Daishi Kato @dai_shi]

@vincentnext_ soon-ish.

[Daishi Kato @dai_shi]

Rendering in Waku is simple!

Static 👉 build time
Dynamic 👉 every request

That's it. No hidden framework cache.

https://t.co/z0WC8DQleP

[Daishi Kato @dai_shi]

⛩️ Waku v1.0.0-beta.8 is out!

I believe this is the last release in the beta phase. Seriously, try out the minimal RSC framework and share your feedback!

https://t.co/Eiw3VPh0gi

[Daishi Kato @dai_shi]

👻 Just published Jotai v3.0.0-alpha.0! Please share your feedback! https://t.co/AisnGntJCP

[Daishi Kato @dai_shi]

@maiahmac I'm not familiar with how others implement it. Waku already had a way to keep static parts (shell), so I implemented the feature on top of it.

[Daishi Kato @dai_shi]

⛩️ Excited to announce Waku v1.0.0-beta.7!

Waku is the minimal React framework for full-stack apps of any size.

We're nearing the end of the beta phase. Give Waku a try and share your feedback!

https://t.co/6Z016zhMPq

[Daishi Kato @dai_shi]

We've added "Getting Started" section in Waku's website. Start with Quick Start: https://t.co/RUcaBO9zRK

[Daishi Kato @dai_shi]

⭐️ I just noticed that excalidraw-animate has passed 2K stars on GitHub! https://t.co/QO0k8yzxd9

[Jotai @jotaijs]

Jotai v2.20.2 is released. 🪄

This patch fixes an edge case regression.

Enjoy! 👻

https://t.co/VCOSBjVo5k

[Daishi Kato @dai_shi]

Waku's Slice is inspired by Gatsby's Slice.
The idea is the same. You define a shared component once, then put a <Slice> placeholder where you want it. It renders once and is reused on every page.
Gatsby does this with static HTML at build time. Waku does it with RSC.

[Daishi Kato @dai_shi]

Waku now supports search params typing (opt-in), like TanStack Router has done before.
Both give you typed search, but their coding styles are different, as the requirement is different.
Waku: a typed prop from a codec you provide. TanStack: validateSearch + useSearch.

[Daishi Kato @dai_shi]

It seems like Waku's code snippet misses render: "dynamic" for the page. I'm not sure when I dropped it. It should have been there.

[Daishi Kato @dai_shi]

Inspired by Next.js's Instant Navigations, Waku now does it partially too.
Click between /post/1 and /post/2. Shell and placeholder stay instant, the body streams after the fetch.
Next: automatic, one file. Waku: opt-in, two files, since it doesn't want to rely on a compiler.

[Daishi Kato @dai_shi]

https://t.co/C6aAuvstBL

[Daishi Kato @dai_shi]

Inspired by Next.js's Instant Navigations, Waku now does it partially too.
Click between /post/1 and /post/2. Shell and placeholder stay instant, the body streams after the fetch.
Next: automatic, one file. Waku: opt-in, two files, since it doesn't want to rely on a compiler.

[Daishi Kato @dai_shi]

Instant Navigation in Waku!?
https://t.co/KyMyzhKew4