diff --git a/notifyjs/notifyjs-tests.ts b/notifyjs/notifyjs-tests.ts
index 8771224c8e..3289791dee 100644
--- a/notifyjs/notifyjs-tests.ts
+++ b/notifyjs/notifyjs-tests.ts
@@ -14,6 +14,7 @@ function test_Notify_constructor() {
         body : "fuga",
         icon : "./logo.png",
         tag  : "user",
+        timeout: 2,
         notifyShow : (e:Event)=> console.log("notifyShow", e),
         notifyClose : ()=> console.log("notifyClose"),
         notifyClick : ()=> console.log("notifyClick"),
@@ -26,9 +27,10 @@ function test_Notify_constructor() {
 }
 
 function test_Notify_static_methods() {
-    Notify.needsPermission();
+    Notify.needsPermission;
     Notify.requestPermission();
     Notify.requestPermission(()=> console.log("onPermissionGrantedCallback"));
     Notify.requestPermission(()=> console.log("onPermissionGrantedCallback"), ()=> console.log("onPermissionDeniedCallback"));
-    Notify.isSupported();
+    Notify.isSupported;
+    Notify.permissionLevel;
 }
diff --git a/notifyjs/notifyjs.d.ts b/notifyjs/notifyjs.d.ts
index f36b8fbcd0..dc7bc57fe0 100644
--- a/notifyjs/notifyjs.d.ts
+++ b/notifyjs/notifyjs.d.ts
@@ -1,4 +1,4 @@
-// Type definitions for notify.js 1.2.0
+// Type definitions for notify.js 1.2.3
 // Project: https://github.com/alexgibson/notify.js
 // Definitions by: soundTricker <https://github.com/soundTricker>
 // Definitions: https://github.com/borisyankov/DefinitelyTyped
@@ -10,20 +10,26 @@ declare var Notify: {
      * Check is permission is needed for the user to receive notifications.
      * @return true : needs permission, false : does not need
      */
-    needsPermission() : boolean;
+    needsPermission : boolean;
 
     /**
      * Asks the user for permission to display notifications
-     * @param onPermissionGrantedCallback A callback for permmision is granted.
-     * @param onPermissionDeniedCallback  A callback for permmision is denied.
+     * @param onPermissionGrantedCallback A callback for permission is granted.
+     * @param onPermissionDeniedCallback  A callback for permission is denied.
      */
     requestPermission(onPermissionGrantedCallback?: ()=> any, onPermissionDeniedCallback? : ()=> any) : void;
 
     /**
      * return true if the browser supports HTML5 Notification
-     * @param true : the browser supports HTML5 Notification, false ; the browswer does not supports HTML5 Notification.
+     * @param true : the browser supports HTML5 Notification, false ; the browser does not supports HTML5 Notification.
      */
-    isSupported() : boolean;
+    isSupported: boolean;
+
+    /**
+     * shows the user's current permission level (granted, denied or default), returns null if notifications are not supported.
+     * @return 'granted' : permission has been given, 'denied' : permission has been denied, 'default' : permission has not yet been set, null : notifications are not supported
+     */
+    permissionLevel: string;
 }
 
 declare module notifyjs {
@@ -72,6 +78,11 @@ declare module notifyjs {
          * unique identifier to stop duplicate notifications
          */
         tag? : string;
+        
+         /**
+         * number of seconds to close the notification automatically
+         */
+        timeout? : number;
 
         /**
          * callback when notification is shown
@@ -98,4 +109,4 @@ declare module notifyjs {
          */
         permissionDenied? : Function;
     }
-}
+}
\ No newline at end of file