Now that my client-side applications are getting sufficiently complex, it makes sense to try to capture errors and other log information happening in the browser somewhere for analysis and debugging.
I was surprised that nobody seems to have made a simple plug-and-play server and client library for doing just that alongside existing infrastructure. So I made one and called it Gyppo. It's a simple server based on node.js and Winston that logs JSON to a text file. It's also got a basic client logging library integration from yours truly. Check it out.