Alternative state management for Vue

Chinese README - 中文说明

.sync is deprecated in Vue 2.x (UPDATE: a castration edition is back in v2.3)
Especially for the case that props passed shallowly, you have to write more verbose code
The docs mentioned using v-model as a hack which sounds hardly elegant
Also, the official solution Vuex is not suitable for independent components
We all know one-way data flow is a best practice
but development efficiency, maintainability, simple and straight-forward should all be taken into consideration

After reviewing the below contents of the docs:

• data Must Be a Function
• State Management

We can implement an awesome state management solution ourselves

Firstly, Take a look at src/sharedState.mixin.js:

// The magic of state persistance is closure here
export const sharedState = {
  todos: [],
  counter: 0
}

export const resetTodos = () => sharedState.todos = []
export const resetCounter = () => sharedState.counter = 0
export const addTodo = (s) => sharedState.todos.push(s)
export const inc = () => sharedState.counter++
export const dec = () => sharedState.counter--

/**
 * @exports.default {Mixin}
 */
export default {
  data: () => ({
    sharedState
  }),
  methods: {
    resetTodos,
    resetCounter,
    addTodo,
    inc,
    dec
  }
}

/*

  You can access the shared state and methods
  not only within Vue component (as mixins) but also in common js files

  ※ e.g.
  import { sharedState, inc } from '<path to>/sharedState.mixin'
  
  console.info(sharedState.counter) // 0
  inc()
  console.info(sharedState.counter) // 1
 
 */

Then, apply to the component tree below:

App
 ├─ Child1
 |    └─ Grandchild1
 └─ Child2
      └─ Grandchild2

Finally we get an online demo

It's highly suggested to dive into src/ to learn about how to use it
This solution is applicable for Vue 1.x / 2.x

---

Test it yourself

$ git clone https://github.com/kenberkeley/vue-state-management-alternative.git
$ cd vue-state-management-alternative
$ npm i
$ npm start