browser-side require() the node way

writable stream that concatenates strings or binary data and calls a callback with the result

Flamegraph visualization for d3 v3.5.x

Lightweight debugging utility for Node.js and the browser

Call a callback when a readable/writable/duplex stream has completed or failed.

Inlines env vars in a string that contains $NAME expressions

spawn stream for child_process.exec

fs-extra contains methods that aren't included in the vanilla Node.js fs package. Such as recursive mkdir, copy, and remove.

Try to guess if your terminal supports unicode

simple HSL to RGB converter

Dominic Tarr's JSONStream using Rodd Vaggs' through2

parse argument options

Morph a DOM tree to another DOM tree (no virtual DOM needed)

Observe when something in your node app starts listening on a TCP port

pipe streams together and close all of them if one of them closes

Combine an array of streams into a single duplex stream using pump and duplexify

The semantic version parser used by npm.

Keep writing to the same line in the terminal. Very useful when you write progress bars, or a status message during longer operations

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

Tiny utilities for inserting transformation logic into Node.js stream and Web Streams pipelines

Like which(1) unix command. Find the first instance of an executable in the PATH.

ECMAScript parsing infrastructure for multipurpose analysis

A modern successor to standard

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