From 83d4da8ed49acd1c0478a551bc64f05a67c44e99 Mon Sep 17 00:00:00 2001
From: Jordan Harband <ljharb@gmail.com>
Date: Fri, 13 May 2022 13:20:04 -0400
Subject: [PATCH] [Fix] in node v0.4, `stream.pipe` returns `undefined`

---
 index.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/index.js b/index.js
index 031df348..f1427b82 100644
--- a/index.js
+++ b/index.js
@@ -109,7 +109,7 @@ function createExitHarness(conf, wait) {
         running = true;
         var stream = harness.createStream({ objectMode: config.objectMode });
         var es = stream.pipe(config.stream || createDefaultStream());
-        if (canEmitExit) {
+        if (canEmitExit && es) { // in node v0.4, `es` is `undefined`
             // TODO: use `err` arg?
             // eslint-disable-next-line no-unused-vars
             es.on('error', function (err) { harness._exitCode = 1; });