fs-extra contains methods that aren't included in the vanilla Node.js fs package. Such as mkdir -p, cp -r, and rm -rf.
Packs CommonJs/AMD modules for the browser. Allows to split your codebase into multiple bundles, which can be loaded on demand. Support loaders to preprocess files, i.e. json, jsx, es7, css, less, ... and your custom stuff.
YAML 1.2 parser and serializer
Streams3, a user-land copy of the stream library from Node.js
parse argument options
Terminal string styling done right
The official MongoDB driver for Node.js