Node is an event-based server-side JavaScript engine.

Underscore is a utility-belt library for JavaScript that provides a lot of the functional programming support that you would expect in Prototype.js (or Ruby), but without extending any of the built-in JavaScript objects. It's the tie to go along with jQuery's tux.

underscore.logger is a logging library usable either directly in web browsers or as a Node module, optionally as an Underscore mixin.

This package contains underscore.logger usable with Node.