Vanilla store + middleware

React chapter 53 · Zustand create · middleware · source: pmndrs/zustand/src/vanilla.ts

The problem

The store is born inside a component (useState/useReducer). A websocket, a native module, or a test cannot call increment without React. Logging and persist are copy-pasted into every setter.

The pattern that fixes it

create((set, get) => ({ count, inc })) is plain JS. Middleware wraps set: logger, persist, devtools compose like (logger(persist(create))). React is one subscriber via useSyncExternalStore.

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