text: export const state = () => ({
      page: null,
      module_name: null,
      item: null,
      meta: {}
  })
  
  // getters
  export const getters = {
      page: state => state.page,
      module: state => state.module_name,
      item: state => state.item,
      meta: state => state.meta
  }
  
  // mutations
  export const mutations = {
      SET_PAGE(state, {page}) {
          state.page = page;
      },
      SET_MODULE(state, {module}) {
          state.module_name = module;
      },
      SET_ITEM(state, {item}) {
          state.item = item;
      },
      SET_META(state, {meta}) {
          state.meta = meta;
      },
  }
  
  // actions
  export const actions = {
      setPage({commit}, page) {
          commit('SET_PAGE', {page})
      },
      setModule({commit}, module) {
          commit('SET_MODULE', {module})
      },
      setItem({commit}, item) {
          commit('SET_ITEM', {item})
      },
      setMeta({commit}, meta) {
          commit('SET_META', {meta})
      }
  }