fix(types): allow a function type for root state option (#1132)

vuejs · Sep 27, 2018 · d39791b · d39791b
1 parent 404d0de
commit d39791b
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Showing 2 changed files with 10 additions and 1 deletion.
diff --git a/types/index.d.ts b/types/index.d.ts
@@ -79,7 +79,7 @@ export interface CommitOptions {
 }
 
 export interface StoreOptions<S> {
-  state?: S;
+  state?: S | (() => S);
   getters?: GetterTree<S, S>;
   actions?: ActionTree<S, S>;
   mutations?: MutationTree<S>;

diff --git a/types/test/index.ts b/types/test/index.ts
@@ -98,6 +98,15 @@ namespace RootDefaultModule {
   });
 }
 
+namespace InitialStateFunction {
+  const store = new Vuex.Store({
+    state: () => ({
+      value: 1
+    })
+  });
+  const n: number = store.state.value;
+}
+
 namespace NestedModules {
   interface RootState {
     a: {