From 74babd3c59f5259c20ca3f86b504aecb451a7c9d Mon Sep 17 00:00:00 2001
From: "Brian M. Carlson" <brian.m.carlson@gmail.com>
Date: Tue, 27 Jul 2021 16:54:20 -0500
Subject: [PATCH] Only call client.ref if it exists. Fixes #2582

---
 packages/pg-pool/index.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/pg-pool/index.js b/packages/pg-pool/index.js
index 5557de5c..48bf5c78 100644
--- a/packages/pg-pool/index.js
+++ b/packages/pg-pool/index.js
@@ -137,7 +137,7 @@ class Pool extends EventEmitter {
       const idleItem = this._idle.pop()
       clearTimeout(idleItem.timeoutId)
       const client = idleItem.client
-      client.ref()
+      client.ref && client.ref()
       const idleListener = idleItem.idleListener
 
       return this._acquireClient(client, pendingItem, idleListener, false)