Vue.use(Vuex)

export default new Vuex.Store({
  modules: {
    moduleOne, moduleTwo
  }
})

state: {
loading: 'null'
},
mutations: {
    setError (state, payload) {
      state.loading = payload
    }
  },
getters: {
    getError(state) {
       return state.loadings
    }
},
action: {
    changeError({commit}, payload) {
      commit('setLoading', payload)
    }
}

state: {
  someObject: ''
  },

mutations: {
   setSomeObject(state, payload) { state.someObject = payload }
},

getters: {
   getSomeObject(state) { return state.someObject }
},

action: {
   fetchSomeObject({commit}, payload) {
   commit('setLoading', null)
   /** какие-то асинхронные операции */
   then(response => {
   commit('setSomeobject', response.data)
})
.catch(e=> {commit('SetError', e.message)}
)