#2548·winston

[Bug]: Possible Memory leak?

Author: peterLam2Created Apr 27, 2025Updated Dec 22, 2025
LabelsNeeds InvestigationBug

Search Terms

Memory Leak, memory, performance, OOM

The problem

is 3.x.x Possible Memory leak?

What version of Winston presents the issue?

3.17.0

What version of Node are you using?

v20.19.0

If this worked in a previous version of Winston, which was it?

v2.4.7

Minimum Working Example

run script with node --max-old-space-size=200 
    logger = winston.createLogger(
      {
        transports: [
          new winston.transports.Console()
        ]
      }
    );

      for (let i = 0; i < 100000; i ++){
          logger.info('testing');
      }

Additional information

tested in winston 3.1.0, the situation is the same. and downgrade to v2.4.7 it work fine.

Image