richer JavaScript errors

Convert img or svg to base64, or convert base64 to img

easily create complex multi-column command-line-interfaces

Assign the enumerable es6 Symbol properties from an object (or objects) to the first object passed on the arguments. Can be used as a supplement to other extend, assign or merge methods as a polyfill for the Symbols part of the es6 Object.assign method.

Event emitter

Temporarily substitute tokens in the given `string` with placeholders, then put them back after transforming the string.

Deeply mix the properties of objects into the first object. Like merge-deep, but doesn't clone.

Bytes go in, but they don't come out (when muted).

A library for manipulating IPv4 and IPv6 addresses in JavaScript.

Object.prototype.hasOwnProperty.call shortcut

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

Returns a filtered copy of an object with only the specified keys, similar to `_.pick` from lodash / underscore.

Robustly `.call.bind()` a function

Markdown-it - modern pluggable markdown parser.

Tiny millisecond conversion utility

Character detector

A tiny (less than 1k) event emitter library

A wide-character aware text alignment function for use on the console or with fixed width fonts.

parse a url with memoization

Utilities for the snapdragon parser/compiler.

Generates and consumes source maps

Standard library

A drop-in replacement for fs, making various improvements.

Get the native type of a value.