Getting started

zustand is an amazing library that keeps state management as simple as you would have always loved it to be. zfy has been built on top of it to provide a useful set of tools to make that experience even more delightful.

🏗️ Installation

Yarn

yarn add @colorfy-software/zfy

npm

npm install @colorfy-software/zfy

Expo

npx expo install @colorfy-software/zfy

🌺 Features

• Fully typed with TypeScript

• Standardized access/update API backed by Immer

• Ability to manage & consume multiple stores at once

• Simple API for store creation with custom middlewares

• Out-of-the-box persist gate component & rehydration hook

• Logger, persist & subscribe middlewares available via a simple flag

💻 Usage

1. 🐣 Create your stores

import {
  PersistGate,
  createStore,
  initStores,
  useRehydrate,
} from '@colorfy-software/zfy'
import AsyncStorage from '@react-native-async-storage/async-storage'

const simpleStore = createStore('groceries', ['kimchi', 'bok choy', 'tteokbokki' ])
const persistedStore = createStore(
  'user',
  { firstName: 'Jolyne' },
  { persist: { getStorage: () => AsyncStorage } },
)

2. ♻️ Rehydrate your data if needed

import { SafeAreaView, Text } from 'react-native'

const Loader = () => (
  <SafeAreaView>
    <Text>⏳ Loading...</Text>
  </SafeAreaView>
)

const App = () => (
  <PersistGate stores={[persistedStore]} loader={<Loader />}>
    <MyApp />
  </PersistGate>
)

// or

const App = () => {
  const isRehydrated = useRehydrate([persistedStore])
  return isRehydrated ? <Loader /> : <MyApp />
}

3. 📦 Bundle your stores as you please

const { stores, useStores } = initStores([simpleStore, persistedStore])
console.log(stores.simpleStore.getState().data[2]) // 'tteokbokki'

// ...or don't!

console.log(persistedStore.getState().data.firstName) // 'Jolyne'

4. ⚛️ Use the bundled/individual stores in your components

const Component = () => {
  const itemToPurchase = useStores('groceries', data => data[0]) // 'kimchi'
  const userName = useStores('user', data => data.firstName) // 'Jolyne'  
  return null
}

// or

const Component = () => {
  const itemToPurchase = simpleStore('groceries', data => data[0]) // 'kimchi'
  const userName = persistedStore('user', data => data.firstName) // 'Jolyne'
  return null
}

5. 🆕 Update your data immutably (thanks to Immer) from wherever

stores.groceries.getState().update(data => {
  data[3] = 'chai'
})

// or

simpleStore.getState().update(data => {
  data[3] = 'chai'
})

6. 🧹 Reset it all once your user is done

stores.reset()

// ...or one by one!

simpleStore.getState().reset()
persistedStore.getState().reset()

💫 Acknowledgments

As you can imagine: major thanks to the team of contributors behind zustand for such an amazing library! zfy also exists thanks to the folks working on Immer who made it so easy to deal with immutable state updates.