From abd3a2a434d11b6434af69e321470f18a5bb04e8 Mon Sep 17 00:00:00 2001
From: OJ Kwon <kwon.ohjoong@gmail.com>
Date: Tue, 3 Jan 2017 19:24:50 -0800
Subject: [PATCH] fix(ISubscription): update type definition of
 ISubscription::closed

---
 src/Subscription.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Subscription.ts b/src/Subscription.ts
index 3fcf43c5a7..aec99264ec 100644
--- 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;
 }
 
 /**