zustand-pub can provides cross-application and cross-framework(react/vue) state management and sharing capabilities for these scenarios, such as iframe, micro-frontend, modularization, componentization, multiple technology stacks exist at the same time, and gradual migration of project frameworks.

1. Applications/Components can mutually call/modify state and trigger component rendering
   • if in iframe, you can discard the hard-to-maintain postMessage + addeventlistener + action
   • if in micro-frontend, you don’t need it anymore eventCenter + action, just call action directly to modify the state。
2. Data Persistence Caching Scheme based on external state storage, application/component/iframe/micro-frontend,etc. state can be cached.
3. Usually, when we refer to the global store in business components, it will lead to the problem that the anthor application cannot be reused, which reduces the reusability of the component. However, based on zustand-pub, such problems will no longer exist, reusability and development efficiency exist at the same time.
4. In the past, the store of modular management was reused in different library (applications), the state could not be updated synchronously, but the state of the store based on zustand-pub module management could be updated synchronously, which improved the store development process. Feasibility of logic reuse and R&D efficiency.
5. In some iframe / micro-frontend scenarios, page rendering is slow due to too many http requests, based on this solution, sub-application status pre-request can be performed to optimize user experience.
6. Based on devtools, you can debug/trace stores between multiple applications at the same time, which can greatly reduce the difficulty of debugging when communicating between applications.
7. If you are using zustand or zustand-vue, it will be very convenient to use zustand-pub.

:::note

:::

npm install zustand-pub # or yarn add zustand-pub

import PubStore from 'zustand-pub'

const pubStore = new PubStore('key')

// vue
import create from "zustand-vue";

//react
// import create from "zustand";

interface IState {
  appInfo: {
    name: string
  }
}

interface IAction {
  setAppName: (val: string) => void
}

const platformStore = pubStore.defineStore<IState & IAction>('platformStore', (set) => ({
  appInfo: { name: '' },
  setAppName(val: string) {
    set({
      appInfo: {
        name: val
      }
    })
  }
}))

const usePlatformStore = create(platformStore)

return value usePlatformStore is hook,in scenario A, you can get the corresponding state through state selector

// vue3
<template>
  <div>{name}</div>
</template>

<script>
const name = usePlatformStore((state) => state.appInfo.name);
const setAppName = usePlatformStore((state) => state.setAppName);

export default {
  name: "AppA",
  data(){
    return {
      name
    }
  },
  methods:{
    setAppName
  }
}
</script>


// react
// function AppA() {
//   const name = usePlatformStore((state) => state.appInfo.name);
//   const setAppName = usePlatformStore((state) => state.setAppName);
//   return <div>{name}</div>
// }

// vue3
<template>
  <div>{name}</div>
</template>

<script setup lang="ts">

interface IState {
  appInfo: {
    name: string
  }
}

interface IAction {
  setAppName: (val: string) => void
}

import PubStore from "zustand-pub";
import create from "zustand-vue";

const pubStore = new PubStore('key')
const store = pubStore.getStore<IState & IAction>("platformStore");
const usePlatformStore = create(store || {});

const name = usePlatformStore((state) => state.appInfo.name);
const setAppName = usePlatformStore((state) => state.setAppName);

</script>

// react
// import PubStore from "zustand-pub";
// import create from "zustand";

// const pubStore = new PubStore('key')
// const store = pubStore.getStore<IState & IAction>("platformStore");
// const usePlatformStore = create(store || {});

// function AppB() {
//  const name = usePlatformStore((state) => state.appInfo.name);
//  const setAppName = usePlatformStore((state) => state.setAppName);
//  return <div>{name}</div>
// }

:::info The Usage of React to bind Component

The Usage of Vue to bind Component :::

Used to create state isolation containers, the data key inside different isolation containers can have the same name and do not affect each other

:::info In the same application, key is unchanged and the pubStore is returned unchanged :::

const pubStore = new PubStore() 

Used to fill data into isolated containers

:::info In the same application, key is unchanged and the defined store will be merged in the order of loading

that is defineStore(key,()=>({a:1,c:1})) defineStore(key,()=>({b:2,c:2})) works like defineStore(key,()=>({a:1,b:2,c:1})) :::

interface IStore {
  ...
}

// usePlatformStore is `hook`, and the corresponding state can be obtained through state `selector`
const usePlatformStore = pubStore.defineStore<IStore>('platformStore', (set, get) => ({}))

Used to fetch data from isolated containers

const platformStore = pubStore.getStore("platformStore");

Return value platformStore can be used to create hook

import create from "zustand";

//vue
// import create from "zustand-vue";

const usePlatformStore = create(platformStore || {});