Catch state mutations in the example with redux-immutable-state-invariant middlawere

Author: zalmoxisus

examples/counter/package.json

@@ -34,6 +34,7 @@
     "node-libs-browser": "^0.5.2",
     "react-addons-test-utils": "^0.14.0",
     "react-transform-hmr": "^1.0.0",
+    "redux-immutable-state-invariant": "^1.1.1",
     "webpack": "^1.9.11",
     "webpack-dev-middleware": "^1.2.0",
     "webpack-hot-middleware": "^2.2.0"

examples/counter/store/configureStore.js

@@ -1,10 +1,11 @@
 import { createStore, applyMiddleware, compose } from 'redux';
 import thunk from 'redux-thunk';
+import invariant from 'redux-immutable-state-invariant';
 import reducer from '../reducers';
 
 export default function configureStore(initialState) {
   const finalCreateStore = compose(
-    applyMiddleware(thunk),
+    applyMiddleware(invariant(), thunk),
     window.devToolsExtension ? window.devToolsExtension() : f => f
   )(createStore);