Kin StoreReactive state that grows with you.

Framework-agnostic. Zero dependencies. 100% type-safe. Start with 244 B and add only what you need.

🪜

Start simple, grow freely

Begin with createStore and three methods. Add withPlugins for structure, derive for composition. Each step is additive — nothing you built needs to change.

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100% type-safe by default

Every reducer, dispatch call, and plugin method is fully inferred. No any, no manual annotation at call sites. The type system is load-bearing, not decorative.

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Tiny and pay-per-use

244 B for createStore. 465 B for derive. 1.07 KB for withPlugins with the full plugin system. Zero cost for capability you haven't opted into.

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Flat plugin composition

Each .use() adds one line — not one nesting level. Read the pipeline top-to-bottom, not inside-out. No conflicting middleware assumptions.

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Explicit, not magic

No hidden merges, no auto-propagating destroy, no implicit dependency graphs. If something happens, you triggered it.

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Framework-agnostic

Works in any framework or none. React bindings ship separately, backed by useSyncExternalStore for concurrent mode safety.