- bluebird
Full featured Promises/A+ implementation with exceptionally good performance
- crypto
- fs
- debug
small debugging utility
- cheerio
Tiny, fast, and elegant implementation of core jQuery designed specifically for the server
- body-parser
Node.js body parsing middleware
- request
Simplified HTTP request client.
- semver
The semantic version parser used by npm.
- readable-stream
Streams3, a user-land copy of the stream library from Node.js
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