Pure-JS printf
Run a function exactly one time
Trim newlines from the start and/or end of a string
Test whether value is error object
A library of cross-platform tested terminal/console command strings for doing things like color and cursor positioning. This is a subset of both ansi and vt100. All control codes included work on both Windows & Unix-like OSes, except where noted.
Unopinionated, no-frills CLI argument parser
A fast function for calculating where a string should be truncated, given an optional width limit and an ellipsis string.
Flow types for the Javascript AST
simple persistent cookiejar system
A minimalistic code generation utility.
process.nextTick but always with args
Easy way to split a string on a given character unless it's quoted or escaped.
HTTP status utility
A bcrypt library for NodeJS.
String validation and sanitization
Strip comments from JSON. Lets you use comments in your JSON files!
Caseless object set/get/has, very useful when working with HTTP headers.
URL utilities for markdown-it
[](https://npmjs.org/package/stream-combiner) [](https://travis-ci.org/dominictarr/stream-combiner)
The core `url` packaged standalone for use with Browserify.
Cross-browser Error parser
delegate methods and accessors to another property
Merge multiple streams into one stream in sequence or parallel.
Give me a string and I'll tell you if it's a valid npm package license string