From f741383004440ec85acc08d24085d505ace976fd Mon Sep 17 00:00:00 2001
From: Mohammed Shah <m9shah3@gmail.com>
Date: Sat, 5 Feb 2022 22:03:15 +0300
Subject: [PATCH] Memory leak fix: do not wait for `process.nextTick` to clear
 pending callbacks (#2057)

* Memory leak fix: do not wait process.nextTick

Addresses the memory leak identified here:

https://github.com/winstonjs/winston/issues/1871#issuecomment-1025490757

* resolve linting failure
---
 lib/winston/logger.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/winston/logger.js b/lib/winston/logger.js
index 0225183e5..febfb67f7 100644
--- a/lib/winston/logger.js
+++ b/lib/winston/logger.js
@@ -312,6 +312,7 @@ class Logger extends Transform {
     try {
       this.push(this.format.transform(info, this.format.options));
     } finally {
+      this._writableState.sync = false;
       // eslint-disable-next-line callback-return
       callback();
     }