Dump the entire vuex store to localStorage and retrieve it again.

vuex_persist.js

// key to use for get/set state:
export const LOCALSTORAGE_KEY = '..'

// as an action: 
export const PERSIST_ACTION = ({ rootState }) => {
  let stateAsString = JSON.stringify(rootState) 
  window.localStorage.setItem(LOCALSTORAGE_KEY, stateAsString)  
}

// restore a cached vuex store: 

// in any vuex item:
loadState () {
  let stateCache = window.localStorage.getItem(LOCALSTORAGE_KEY)
  store.replaceState(JSON.parse(stateCache))
}

// profit :)