fix(ISubscription): update type definition of ISubscription::closed (#…

…2249)
ReactiveX · Jan 13, 2017 · 0c304a2 · 0c304a2
1 parent eb462bf
commit 0c304a2
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/Subscription.ts b/src/Subscription.ts
@@ -13,7 +13,7 @@ export type TeardownLogic = AnonymousSubscription | Function | void;
 
 export interface ISubscription extends AnonymousSubscription {
   unsubscribe(): void;
-  closed: boolean;
+  readonly closed: boolean;
 }
 
 /**