import Vuex from 'vuex' ; import { DefineActions , DefineGetters , DefineMutations } from "vuex-type-helper" ; export interface State { name : string ; } export interface Getters { name : string ; } export interface Mutations { name : { name : string ; } ; } export interface Actions { name : { name : string ; } ; } const state = { name : 'World' } ; const getters = { name : state => state . name } ; const mutations = { name ( state , { name } ) { state . name = name ; } } ; const actions = { name ( { commit } , payload ) { commit ( 'name' , payload ) ; } } ; export const { mapState , mapGetters , mapMutations , mapActions } = Vuex . createNamespacedHelpers < State , Getters , Mutations , Actions > ( 'app' ) ; export const app = { namespaced : true , state : state , getters : getters , mutations : mutations , actions : actions } ;