- implementing immutable.js

app/reducers/blockUI.js

@@ -0,0 +1,12 @@
+import { BLOCK_UI, UNBLOCK_UI } from '../constants/actionTypes.js';
+
+export const blockUI = (state = false, action) => {
+  switch (action.type) {
+    case BLOCK_UI:
+      return true;
+    case UNBLOCK_UI:
+      return false;
+    default:
+      return state;
+  }
+};