Keep track of the overall completion of many disparate processes

Streams3, a user-land copy of the stream library from Node.js

a customizable value inspector

ProseMirror plugin for cursors at normally impossible-to-reach positions

Native Abstractions for Node.js: C++ header for Node 0.8 -> 18 compatibility

A small fast zlib stream built on [minipass](http://npm.im/minipass) and Node.js's zlib binding.

Determine an app's root path from anywhere inside the app

The lodash method `_.flow` exported as a module.

Lightweight library with aggregate functions for composing asynchronous and event-based operations in JavaScript

Normalize file path slashes to be unix-like forward slashes. Also condenses repeat slashes to a single slash and removes and trailing slashes unless disabled.

extended POSIX-style sprintf

Easy error subclassing and stack customization

Runtime for Regenerator-compiled generator and async functions.

Fill in a range of numbers or letters, optionally passing an increment or `step` to use, or create a regex-compatible range with `options.toRegex`

Get the visual width of a string - the number of columns required to display it

preconfigured nodejs util for inspecting, and customizing inspecting

Returns true if a value has the characteristics of a valid JavaScript descriptor. Works for data descriptors and accessor descriptors.

HTTP content negotiation

TypeScript definitions for Node.js

CLI arguments parser. Native port of python's argparse.

fs-extra contains methods that aren't included in the vanilla Node.js fs package. Such as mkdir -p, cp -r, and rm -rf.

Object.prototype.hasOwnProperty.call shortcut

Execute a callback when a request closes, finishes, or errors

Runtime type checking for React props and similar objects.