From 07b6aa54231d65c4357df5ddfd68a585a9b84c4d Mon Sep 17 00:00:00 2001
From: Shane DeWael <sdewael@slack-corp.com>
Date: Fri, 3 May 2019 10:08:58 -0700
Subject: [PATCH] Fix subtype matching

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

diff --git a/src/middleware/builtin.ts b/src/middleware/builtin.ts
index 93a712664..492f508a9 100644
--- a/src/middleware/builtin.ts
+++ b/src/middleware/builtin.ts
@@ -239,7 +239,7 @@ export function ignoreSelf(): Middleware<AnyMiddlewareArgs> {
 
 export function subtype(subtype: string): Middleware<SlackEventMiddlewareArgs<'message'>> {
   return ({ message, next }) => {
-    if (message.subtype !== subtype) {
+    if (message.subtype === subtype) {
       next();
     }
   };