Logging support for Node.js based on the log4js Javascript (browser/client) framework.

Supported features:

- coloured console logging - replacement of node's console.log functions (optional) - file appender, with log rolling based on file size - SMTP appender - GELF appender - hook.io appender - multiprocess appender (useful when you've got worker processes) - a logger for connect/express servers - configurable log message layout/patterns - different log levels for different log categories (make some parts of your app log as DEBUG, others only ERRORS, etc.)