Use proper session id instead of whole String.match

Author: peteruithoven

src/app/store/configureStore.js

@@ -6,9 +6,11 @@ export default function configureStore(next) {
   return compose(
     DevTools.instrument(),
     persistState(
-      window.location.href.match(
-        /[?&]debug_session=([^&]+)\b/
-      )
+      getPersistSession()
     )
   )(next);
 }
+function getPersistSession() {
+  const matches = window.location.href.match(/[?&]debug_session=([^&]+)\b/);
+  return (matches && matches.length > 0)? matches[1] : null;
+}