option parsing and help generation

Check if the internet connection is up

Lightweight browser detector

MJML: the only framework that makes responsive-email easy

A simple SHA-3 / Keccak / SHAKE / cSHAKE / KMAC / TupleHash / ParallelHash hash function for JavaScript supports UTF-8 encoding.

Create your next immutable state by mutating the current one

Terminal and Web console for Kubernetes

Error comparison and information related utility for node and the browser

Check if a path is a file, directory, or symlink

type-check allows you to check the types of JavaScript values at runtime with a Haskell like type syntax.

Offline and Online components for React

Check which JavaScript environment your code is running in at runtime: browser, Node.js, Bun, etc

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

Convert HTML code to PDFMake

Check if a value is an object

JavaScript library for mobile-friendly interactive maps

Check if stdout or stderr is interactive

Check if a file path is a binary file

Parser generator for JavaScript

unist utility to check if a node passes a test