app/drivers/CHROME/src/persist.js in flok-0.0.68 vs app/drivers/CHROME/src/persist.js in flok-0.0.69

@@ -14,7 +14,11 @@
 }
 
 function if_per_get(s, ns, key) {
   var _ns = store.namespace(ns);
   var res = _ns.get(key);
+  if (res === undefined) {
+    throw "This should never be reached. if_per_get returned undefined, it should return null";
+  }
+
   int_dispatch([4, "int_per_get_res", s, ns, key, res]);
 }