diff --git a/src/shared/lib/helpers/createPersistentStore/createPersistentStore.svelte.ts b/src/shared/lib/helpers/createPersistentStore/createPersistentStore.svelte.ts
index cfb37ad..761998b 100644
--- a/src/shared/lib/helpers/createPersistentStore/createPersistentStore.svelte.ts
+++ b/src/shared/lib/helpers/createPersistentStore/createPersistentStore.svelte.ts
@@ -49,3 +49,5 @@ export function createPersistentStore<T>(key: string, defaultValue: T) {
         },
     };
 }
+
+export type PersistentStore<T> = ReturnType<typeof createPersistentStore<T>>;
diff --git a/src/shared/lib/index.ts b/src/shared/lib/index.ts
index 56882c0..99ade48 100644
--- a/src/shared/lib/index.ts
+++ b/src/shared/lib/index.ts
@@ -14,6 +14,7 @@ export {
     type Filter,
     type FilterModel,
     type LineData,
+    type PersistentStore,
     type Property,
     type ResponsiveManager,
     responsiveManager,