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jotai-pro
Manage atomic React state with Jotai: atoms, derived atoms, async atoms, and scoped providers. Use for granular, bottom-up state in React.
skills/jotai-pro/SKILL.md
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# Jotai Pro
A practical guide to Jotai: atomic state management for React — tiny atoms composed bottom-up, derived atoms, async atoms, and the patterns that make global state feel local.
## Overview
Jotai inverts the store model: instead of one big store you slice, you define **atoms** — minimal units of state — and compose them. Components subscribe to exactly the atoms they use, so re-renders are surgically precise. State can live colocated with features yet be shared globally. It's "React state, but shareable": `useState`-like ergonomics with global reach.
## When to use
- Granular state where different components need different pieces (avoids over-rendering).
- Bottom-up state: start local, lift to shared only when needed.
- Derived state (computed from other atoms) without selector boilerplate.
- Async state (data fetching) as atoms with Suspense integration.