Use date type for timeline pin

Author: jccit

lib/types/timeline.d.ts

@@ -3,7 +3,7 @@ export {};
 declare global {
   interface TimelinePin {
     id: string;
-    time: string;
+    time: Date;
     duration?: number;
     createNotification?: TimelineNotification;
     updateNotification?: TimelineNotification;