Restore vanilla components

app/javascript/mastodon/actions/store.js

@@ -0,0 +1,17 @@
+import { Iterable, fromJS } from 'immutable';
+
+export const STORE_HYDRATE = 'STORE_HYDRATE';
+export const STORE_HYDRATE_LAZY = 'STORE_HYDRATE_LAZY';
+
+const convertState = rawState =>
+  fromJS(rawState, (k, v) =>
+    Iterable.isIndexed(v) ? v.toList() : v.toMap());
+
+export function hydrateStore(rawState) {
+  const state = convertState(rawState);
+
+  return {
+    type: STORE_HYDRATE,
+    state,
+  };
+};