- commander
the complete solution for node.js command-line programs
- colors
get colors in your node.js console
- readable-stream
Streams3, a user-land copy of the stream library from Node.js
- mocha
simple, flexible, fun test framework
- bluebird
Full featured Promises/A+ implementation with exceptionally good performance
- js-yaml
YAML 1.2 parser and serializer
- path
- rimraf
A deep deletion module for node (like `rm -rf`)
- ws
Simple to use, blazing fast and thoroughly tested websocket client and server for Node.js
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