nuxt-news/store/index.js

import Vuex from 'vuex'

const createStore = () => {
  return new Vuex.Store({
    state: {
      headlines: []
    },
    mutations: {
      setHeadLines (state, headlines) {
        state.headlines = headlines
      }
    },
    actions: {
      async loadHeadLines ({ commit }, apiUrl) {
        const { articles } = await this.$axios.$get(apiUrl)
        commit('setHeadLines', articles)
      }
    },
    getters: {
      headlines: state => state.headlines
    }
  })
}

export default createStore