yargs the modern, pirate-themed, successor to optimist.
parse argument options
A querystring parser that supports nesting and arrays, with a depth limit
Full featured Promises/A+ implementation with exceptionally good performance
Lodash modular utilities.
A tiny wrapper around Node.js streams.Transform (Streams2/3) to avoid explicit subclassing noise
A logger for just about everything.
small debugging utility
Tiny millisecond conversion utility