VueFort

The state management for Vue.

Works for Vue 2 & 3.

dependencies

• VueDemi

setup

npm

npm i vue-fort

npm i @vue/composition-api # if using Vue 2

---

import {
  createInstance,
  toRefs,
} from 'vue-fort';

browser

<!-- if using Vue 2 -->
<script src="https://unpkg.com/vue@2"></script>
<script src="https://unpkg.com/@vue/composition-api"></script>

<!-- if using Vue 3 -->
<script src="https://unpkg.com/vue@3"></script>

<script src="https://unpkg.com/vue-demi"></script>
<script src="https://unpkg.com/vue-fort"></script>

The module is globally available as VueFort.

guide

basics

Create a state.

let state = reactive({count: 1});

Create an instance from the state.

let instance = createInstance({
  state,
  getters: {
    countDouble() {
      return this.count * 2;
    },
  },
  watch: {
    countDouble(value) {
      console.log(value);
    },
  },
  methods: {
    inc() {
      this.count++;
    },
  },
});

Access the properties and methods of the instance directly.

console.log(instance.count); // => 1
console.log(instance.countDouble); // => 2

instance.inc();

console.log(instance.count); // => 2
console.log(instance.countDouble); // => 4

The changes to the underlying state are reflected back to the instance and vice versa.

state.count = 8;

console.log(instance.count); // => 8

instance.inc();

console.log(state.count); // => 9

state as function

The state property can also be a function for the reusable options.

let instance = createInstance({
  state() {
    return {count: 1};
  },
});

effect scope

When an instance is created during a component's setup function or lifecycle hooks, the instance is bound to the component's lifecycle and will be automatically destroyed when the component is unmounted.

In other cases, the instance can be explicitly destroyed by calling the $destroy function.

instance.$destroy();

console.log(instance.$isDestroyed); // true

nested instances

An instance can be explicitly bound to the scope of another instance via the bind option.

let root = createInstance({
  state: {
    items: [],
  },
  methods: {
    addItem(label, value) {
      let {items} = this;
      let item = createInstance({
        state: {
          label,
          value,
        },
        bind: this,
      });
      items.push(item);
    },
    delItem(index) {
      let {items} = this;
      let [item] = items.splice(index, 1);
      item.$destroy();
    },
  },
});

root.addItem('a', 23);
root.addItem('b', 25);
root.addItem('c', 27);

console.log(root.items.length); // => 3

root.delItem(1);

console.log(root.items.length); // => 2

Destroying a parent instance will automatically destroy all its child instances.

root.$destroy();

console.log(root.$isDestroyed); // true
console.log(root.items.every(item => item.$isDestroyed)); // true