text: const SAVE_MAX_LENGTH = 10
  let search = {
    namespaced: true,
    state: {
      searchHistory: JSON.parse(localStorage.getItem('__searchHistory__')) || []
    },
    getters: {
      searchHistory: state => state.searchHistory
    },
    mutations: {
      update: (state, val) => {
        state.searchHistory = val
      }
    },
    actions: {
      saveKeyword ({ commit, state }, keyword) {
        let words = state.searchHistory
        words.unshift(keyword)
        words = [...new Set(words)].slice(0, SAVE_MAX_LENGTH)
        console.log(words)
        commit('update', words)
        localStorage.setItem('__searchHistory__', JSON.stringify(words))
      },
      deleteKeyword ({ commit, state }, index) {
        let words = state.searchHistory
        words.splice(index, 1)
        console.log(words)
        commit('update', words)
        localStorage.setItem('__searchHistory__', JSON.stringify(words))
      },
      clearKeyword ({ commit }) {
        commit('update', [])
        localStorage.removeItem('__searchHistory__')
      }
    }
  }
  
  export default search
  