Making Observable better

src/index.ts

@@ -1,9 +1,11 @@
 import Lock, { Release } from "./lock";
-import Observable, { ObserverCallback } from "./observable";
+import Observable, { ObserverCallback, ObserverCallbackCollect, ObservableInterface } from "./observable";
 
 export {
     Lock,
     Release,
     Observable,
-    ObserverCallback
+    ObserverCallback,
+    ObserverCallbackCollect,
+    ObservableInterface
 }