vuex-class可以包裝vuex的寫法，使代碼簡化
Installation
$ npm install --save vuex-class
Example
import Vue from 'vue'
import Component from 'vue-class-component'
import {
State,
Getter,
Action,
Mutation,
namespace
} from 'vuex-class'
const someModule = namespace('path/to/module')
@Component
export class MyComp extends Vue {
@State('foo') stateFoo
@State(state => state.bar) stateBar
@Getter('foo') getterFoo
@Action('foo') actionFoo
@Mutation('foo') mutationFoo
@someModule.Getter('foo') moduleGetterFoo
// If the argument is omitted, use the property name
// for each state/getter/action/mutation type
@State foo
@Getter bar
@Action baz
@Mutation qux
created () {
this.stateFoo // -> store.state.foo
this.stateBar // -> store.state.bar
this.getterFoo // -> store.getters.foo
this.actionFoo({ value: true }) // -> store.dispatch('foo', { value: true })
this.mutationFoo({ value: true }) // -> store.commit('foo', { value: true })
this.moduleGetterFoo // -> store.getters['module/foo']
}
}