add type test

reduxjs · Dec 23, 2023 · 9e8a320 · 9e8a320
1 parent 3e9e484
commit 9e8a320
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/test/typescript/store.ts b/test/typescript/store.ts
@@ -61,6 +61,11 @@ const funcWithStore = (store: Store<State, DerivedAction>) => {}
 
 const store: Store<State> = createStore(reducer)
 
+// test that nullable state is preserved
+const nullableStore = createStore((): string | null => null)
+
+expectTypeOf(nullableStore.getState()).toEqualTypeOf<string | null>()
+
 // ensure that an array-based state works
 const arrayReducer = (state: any[] = []) => state || []
 const storeWithArrayState: Store<any[]> = createStore(arrayReducer)