fix(store): fix Object.keys being called on null or undefined

This should mitigate ngrx#250
David-Mueller · May 28, 2018 · 529fe7b · 529fe7b
1 parent 97cda1c
commit 529fe7b
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/modules/store/src/utils.ts b/modules/store/src/utils.ts
@@ -14,7 +14,7 @@ export function combineReducers(
   reducers: any,
   initialState: any = {}
 ): ActionReducer<any, Action> {
-  const reducerKeys = Object.keys(reducers);
+  const reducerKeys = reducers ? Object.keys(reducers) : [];
   const finalReducers: any = {};
 
   for (let i = 0; i < reducerKeys.length; i++) {