--- title: README nav: title: Hooks path: /hook group: title: Derived State path: /derived-state order: 1 ---

A Redux store enhancer for computing derived state by binding selectors to the store

Updates derived state when props update

A tiny, **renderer-agnostic state-machine engine** for building UI component logic once and running it anywhere. It owns _behavior_, states, transitions, side-effects, derived state, and knows nothing about the render environment.

Offline-first Ed25519 licensing for @classytic/arc apps — signed license tokens, derived-state enforcement (entitlements, seat/branch caps, grace + read-only degradation), a hot-swappable activation surface, and a vendor-side issuer CLI. Vendor-agnostic:

Zero dependency React transition state machine.

Shared types: run configs, workspace manifests, derived state, validation

Framework-agnostic pricing SDK for schemas, derived state, submission, and diagnostics.

[](https://npm.im/@dnd-kit/state)

Observable derived state

small simple global state management library. class-based stores, selector subscriptions, derived state, redux devtools. inspired by flutter's `ChangeNotifier` and riverpod.

👻🔭

An observable, extensible state object with derived watchable properties.

A React Hook that Creates a Derived State from a Reactive Value (Fixing the Cascading Updates Issue)

State Management using Signals

Selectors for Redux.

tldraw infinite canvas SDK (state).

Pre-built TopoJSON from the U.S. Census Bureau.

Helpers for generating account addresses

A modular store factory using zustand