node's assert.deepEqual algorithm except for NaN being equal to NaN

hast utility to check if a node is inter-element whitespace

Core istanbul API for JS code coverage

Check if the process is running in an SSH session

JS type check (TypeScript supported) functions like `isPlainObject() isArray()` etc. A simple & small integration.

Serialize (encode) HTML character references

An efficient queue capable of managing thousands of concurrent animations.

Offers getProxyForUrl to get the proxy URL for a URL, respecting the *_PROXY (e.g. HTTP_PROXY) and NO_PROXY environment variables.

Check if something is a Node.js stream

split a Text Stream into a Line Stream, using Stream 3

Generic build of Mozilla's PDF.js library.

A function to check whether a prop is valid for HTML and SVG elements

A shim for the setImmediate efficient script yielding API

Read and write files atomically and reliably.

Minimal and efficient cross-platform file watching library

mdast utility to get the plain text content of a node

A deep deletion module for node (like `rm -rf`)

Tool for transforming styles with JS plugins

Get the first fulfilled promise that satisfies the provided testing function

A dictionary of file extensions and associated module loaders.