feat(redux): add logger middleware

src/common/redux/middleware/logger.js

@@ -0,0 +1,22 @@
+/**
+ * Logs all actions and states after they are dispatched.
+ */
+const logger = store => next => (action) => {
+  // Notes:
+  // next = store.dispatch;
+  // next(action) = dispatch(action);
+
+  if (__CLIENT__) {
+    /* eslint-disable */
+    console.group(action.type)
+    console.info('dispatching', action)
+    const result = next(action)
+    console.log('next state', store.getState())
+    console.groupEnd(action.type)
+    return result
+  }
+
+  return
+}
+
+export default logger