From 2974dfa8ecb5f854fed195463620781895a033af Mon Sep 17 00:00:00 2001
From: Dustin Spicuzza <dustin@virtualroadside.com>
Date: Sun, 21 Oct 2018 11:59:40 -0400
Subject: [PATCH] client: don't call callbacks if close() is called (#258)

- ts-protoc-gen clears out the callbacks anyways
- Fixes #257
---
 ts/src/client.ts | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/ts/src/client.ts b/ts/src/client.ts
index 0a653678..41f02450 100644
--- a/ts/src/client.ts
+++ b/ts/src/client.ts
@@ -209,6 +209,7 @@ class GrpcClient<TRequest extends ProtobufMessage, TResponse extends ProtobufMes
 
     this.onEndCallbacks.forEach(callback => {
       detach(() => {
+        if (this.closed) return;
         callback(code, message, trailers);
       });
     });
@@ -230,6 +231,7 @@ class GrpcClient<TRequest extends ProtobufMessage, TResponse extends ProtobufMes
     this.completed = true;
     this.onEndCallbacks.forEach(callback => {
       detach(() => {
+        if (this.closed) return;
         callback(code, msg, trailers);
       });
     });
@@ -240,6 +242,7 @@ class GrpcClient<TRequest extends ProtobufMessage, TResponse extends ProtobufMes
     if (this.completed || this.closed) return;
     this.onMessageCallbacks.forEach(callback => {
       detach(() => {
+        if (this.closed) return;
         callback(res);
       });
     });