From ddf67d193d50fb9817755c11680ab3089365dbcb Mon Sep 17 00:00:00 2001
From: Alexander Fenster <fenster@google.com>
Date: Mon, 18 Nov 2019 21:37:54 -0800
Subject: [PATCH] fix: extra check for undefined (#144)

---
 typescript/src/schema/proto.ts | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/typescript/src/schema/proto.ts b/typescript/src/schema/proto.ts
index b05aa3d5c..824534f7d 100644
--- a/typescript/src/schema/proto.ts
+++ b/typescript/src/schema/proto.ts
@@ -389,7 +389,11 @@ function augmentMethod(
     },
     method
   ) as MethodDescriptorProto;
-  if (method.inputType && messages[method.inputType].field) {
+  if (
+    method.inputType &&
+    messages[method.inputType] &&
+    messages[method.inputType].field
+  ) {
     const paramComment: Comment[] = [];
     const inputType = messages[method.inputType!];
     const inputmessageName = toMessageName(method.inputType);