- readable-stream
Streams3, a user-land copy of the stream library from Node.js
- mocha
simple, flexible, fun test framework
- winston
A logger for just about everything.
- mkdirp
Recursively mkdir, like `mkdir -p`
- through2
A tiny wrapper around Node.js streams.Transform (Streams2/3) to avoid explicit subclassing noise
- semver
The semantic version parser used by npm.
- async
Higher-order functions and common patterns for asynchronous code
- mime-types
The ultimate javascript content-type utility.
- js-yaml
YAML 1.2 parser and serializer
- Top Sublime Text plugins