Handle dynamically registered modules

[boris-graeff]

We could handle dynamically registered modules just getting saved state during plugin initialization:

diff --git a/index.js b/index.js
index 257a9ed..16578f4 100644
--- a/index.js
+++ b/index.js
@@ -52,8 +52,9 @@ export default function(options, storage, key) {
     throw new Error('Invalid storage instance given');
   }
 
+  const savedState = shvl.get(options, 'getState', getState)(key, storage);
+
   return function(store) {
-    const savedState = shvl.get(options, 'getState', getState)(key, storage);
 
     if (typeof savedState === 'object' && savedState !== null) {
       store.replaceState(merge(store.state, savedState, {

We just have to initialize the plugin before store creation, then bind plugin after :

import createPersistedState from 'vuex-persistedstate'
const persistatedStore = createPersistedState(someOptions)

const store = new Vuex.Store({ ... })
store.registerModule('someModule', someModule)
persistatedStore(store)

[robinvdvleuten]

@boris-graeff thanks for the PR! Can you think of any usecases where this breaks current setups?

[boris-graeff]

@robinvdvleuten I can't tell ...
To avoid any issue, we can make this behaviour optional

const fetchSavedState = () => shvl.get(options, 'getState', getState)(key, storage);
let savedState

if (options.prefetchSavedState) savedState = fetchSavedState()

return function(store) {
    if (!options.prefetchSavedState) savedState = fetchSavedState()

[robinvdvleuten]

I think it won't cause any issues. Thanks for your work!