project done

client/src/store.js

@@ -0,0 +1,39 @@
+import { createStore, applyMiddleware } from 'redux';
+import { composeWithDevTools } from 'redux-devtools-extension';
+import thunk from 'redux-thunk';
+import rootReducer from './reducers';
+import setAuthToken from './utils/setAuthToken';
+
+const initialState = {};
+
+const middleware = [thunk];
+
+const store = createStore(
+  rootReducer,
+  initialState,
+  composeWithDevTools(applyMiddleware(...middleware))
+);
+
+/*
+  NOTE: set up a store subscription listener
+  to store the users token in localStorage
+ */
+
+/*
+  initialize current state from redux store for subscription comparison
+  preventing undefined error
+ */
+let currentState = store.getState();
+
+store.subscribe(() => {
+  // keep track of the previous and current state to compare changes
+  let previousState = currentState;
+  currentState = store.getState();
+  // if the token changes set the value in localStorage and axios headers
+  if (previousState.auth.token !== currentState.auth.token) {
+    const token = currentState.auth.token;
+    setAuthToken(token);
+  }
+});
+
+export default store;