A bit of charity work done again!
Multer is a software module that is widely used to handle file upload requests in Node.js web servers. The module has about 360 000 weekly downloads in npm and over 5500 stars in GitHub.
In Taataa, we use Multer to receive images uploaded by users and other servers. During integration testing we found that sometimes our bot was damn too quick and begun upload an image file even before the file was completely created. That caused empty files being uploaded, which surprisingly caused buggy behaviour on the server side.
After some private detective work I managed to trace the issue to Multer. I proposed a fix and it got accepted into Multer v1.4.1. Yay!