From b5214a2f9fa374d7e7784904456152de7c2ceb82 Mon Sep 17 00:00:00 2001
From: Christopher Jeffrey <chjjeffrey@gmail.com>
Date: Mon, 10 Jun 2019 19:22:50 -0700
Subject: [PATCH] process/stdio: fix ref watching for readable stream.

See: https://github.com/nodejs/node/pull/28153
---
 lib/process/stdio.js | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/lib/process/stdio.js b/lib/process/stdio.js
index 172dbae..475c9de 100644
--- a/lib/process/stdio.js
+++ b/lib/process/stdio.js
@@ -30,8 +30,11 @@ class Readable extends stream.Readable {
     this._started = false;
 
     this.on('end', () => {
-      if (this._increments && --this._port._stdioRefs === 0)
-        this._port._stdioRef.unref();
+      // See: https://github.com/nodejs/node/pull/28153
+      if (this._started && this._increments) {
+        if (--this._port._stdioRefs === 0)
+          this._port._stdioRef.unref();
+      }
     });
   }