diff --git a/src/def.d.ts b/src/def.d.ts
index 77bc58f..e9fb06e 100644
--- a/src/def.d.ts
+++ b/src/def.d.ts
@@ -486,7 +486,7 @@ interface VendettaObject {
     };
     storage: {
         createProxy: <T>(target: T) => { proxy: T, emitter: Emitter };
-        useProxy: <T>(storage: T) => T;
+        useProxy: <T>(storage: T & { [key: symbol]: any }) => T;
         createStorage: <T>(backend: StorageBackend) => Promise<Awaited<T>>;
         wrapSync: <T extends Promise<any>>(store: T) => Awaited<T>;
         awaitSyncWrapper: (store: any) => Promise<void>;
@@ -514,7 +514,7 @@ declare global {
     const __vendettaVersion: string;
 
     interface Window {
-        [key: PropertyKey]: any;
+        [key: Exclude<PropertyKey, number>]: any;
         modules: MetroModules;
         vendetta: VendettaObject;
         React: typeof _React;
diff --git a/src/lib/storage/index.ts b/src/lib/storage/index.ts
index 07d4072..ab161a8 100644
--- a/src/lib/storage/index.ts
+++ b/src/lib/storage/index.ts
@@ -81,7 +81,7 @@ export function useProxy<T>(storage: T & { [key: symbol]: any }): T {
     return storage;
 }
 
-export async function createStorage<T>(backend: StorageBackend): Promise<Awaited<T>> {
+export async function createStorage<T>(backend: StorageBackend): Promise<Awaited<T & { [key: symbol]: any }>> {
     const data = await backend.get();
     const { proxy, emitter } = createProxy(data);
 
diff --git a/tsconfig.json b/tsconfig.json
index 9410367..7969e9b 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -12,6 +12,7 @@
         "strict": true,
         "forceConsistentCasingInFileNames": true,
         "resolveJsonModule": true,
+        "skipLibCheck": true,
         "paths": {
             "@/*": ["src/*"],
             "@types": ["src/def.d.ts"],