Error comparison and information related utility for node and the browser

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

option parsing and help generation

A library for obtaining browser versions with their maximum supported Baseline feature set and Widely Available status.

Check if a string is an IP address

Check if the process is running in an SSH session

when you want to fire an event no matter how a process exits.

Check if a value is a plain object

Lightweight browser detector

Determine if an object is a Buffer

Public logs API for OpenTelemetry

Check if a value is an object

Better `os.arch()` for node and the browser -- detect OS architecture

A simple Node.js module to check if a TCP port is already bound.

Read `.xlsx` files in a web browser or in Node.js

A shim for the setImmediate efficient script yielding API

Check if mobile browser.

Check the engines and platform fields in package.json

Check if the process is running inside a Docker container

A ridiculously light-weight argument validator (now browser friendly)