hasOwnProperty

improbable-eng · Nov 22, 2017 · 3b63abb · 3b63abb
1 parent d95bf65
commit 3b63abb
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/ts/src/transports/nodeHttp.ts b/ts/src/transports/nodeHttp.ts
@@ -63,8 +63,10 @@ function filterHeadersForUndefined(headers: {[key: string]: string | string[] |
 
   for (let key in headers) {
     const value = headers[key];
-    if (value !== undefined) {
-      filteredHeaders[key] = value;
+    if (headers.hasOwnProperty(key)) {
+      if (value !== undefined) {
+        filteredHeaders[key] = value;
+      }
     }
   }