@artizon/derive-zustand v1.0.2

derive-zustand

A function to create a derived Zustand store from many input stores.

Comparision with dai-shi/derive-zustand:

This derive-zustand's deriveFn (onChange) takes two additional arguments:

• Previous states of the dependant stores
• Previous state of the derived store itself

Example usage:

const depStore1 = create<{
  value: number[];
}>(() => ({
  value: [1],
}));

const depStore2 = create<{
  value: number[];
}>(() => ({
  value: [2],
}));

const deriveStore = derive<string, [typeof depStore1, typeof depStore2]>(
  [depStore1, depStore2],
  ([dep1, dep2], prevDeps, prevState) => {
    return `${dep1} ${dep2}`;
  }
);