From e37d23d52d08a29f31c125f285e949dce9c18999 Mon Sep 17 00:00:00 2001
From: Alex Clemmer <clemmer.alexander@gmail.com>
Date: Wed, 6 Nov 2019 18:41:49 -0800
Subject: [PATCH] Don't attempt to deserialize empty invoke responses

---
 sdk/nodejs/runtime/invoke.ts | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/sdk/nodejs/runtime/invoke.ts b/sdk/nodejs/runtime/invoke.ts
index 64ee43107..9ec7be753 100644
--- a/sdk/nodejs/runtime/invoke.ts
+++ b/sdk/nodejs/runtime/invoke.ts
@@ -335,7 +335,7 @@ function serializePropertiesSync(prop: any): any {
     }
 }
 
-function deserializeResponse(tok: string, resp: any) {
+function deserializeResponse(tok: string, resp: any): any {
     const failures: any = resp.getFailuresList();
     if (failures && failures.length) {
         let reasons = "";
@@ -350,5 +350,8 @@ function deserializeResponse(tok: string, resp: any) {
         throw new Error(`Invoke of '${tok}' failed: ${reasons}`);
     }
 
-    return deserializeProperties(resp.getReturn());
+    const ret = resp.getReturn();
+    return ret === undefined
+        ? ret
+        : deserializeProperties(ret);
 }