diff --git a/index.d.ts b/index.d.ts
index d5e1079..0a37261 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -1,15 +1,15 @@
 declare module "local-storage" {
     export function set<T>(key: string, value: T): boolean;
     export function get<T>(key: string): T;
-    export function remove(key:string):void;
-    export function clear():void;
+    export function remove(key: string): void;
+    export function clear(): void;
 
-    export function on<T>(key:string,cb: (value:T)=>void):void;
-    export function on<T>(key:string,cb: (value:T,old : T)=>void):void;
-    export function on<T>(key:string,cb: (value:T,old : T,url: T)=>void):void;
-    
-    export function off<T>(key:string,cb: (value:T)=>void):void;
-    export function off<T>(key:string,cb: (value:T,old : T)=>void):void;
-    export function off<T>(key:string,cb: (value:T,old : T,url: T)=>void):void;
-    export default function<T>(key:string,value?:T):void;
+    export function on<T>(key: string, cb: (value: T) => void): void;
+    export function on<T>(key: string, cb: (value: T, old: T) => void): void;
+    export function on<T>(key: string, cb: (value: T, old: T, url: T) => void): void;
+
+    export function off<T>(key: string, cb: (value: T) => void): void;
+    export function off<T>(key: string, cb: (value: T, old: T) => void): void;
+    export function off<T>(key: string, cb: (value: T, old: T, url: T) => void): void;
+    export default function <T>(key: string, value?: T): void;
 }
\ No newline at end of file