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

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

Large collection of predicates.

Detect Node.JS (as opposite to browser environment). ESM modification

a little library for check js varible type

Is this specifier a node.js core module?

A querystring parser that supports nesting and arrays, with a depth limit

Docker Remote API module.

Check if mobile browser.

Error comparison and information related utility for node and the browser

quote and parse shell commands

This library provides the functionality of PBKDF2 with the ability to use any supported hashing algorithm returned from crypto.getHashes()

Put a bunch of emitted events in an array, for testing.

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

Verification, sanitization, and type coercion for environment variables in Node.js

Which kind of Typed Array is this JavaScript value? Works cross-realm, without `instanceof`, and despite Symbol.toStringTag.

Handlebars provides the power necessary to let you build semantic templates effectively with no frustration

Check if an environment is little endian.

Check if an environment is big endian.

An implementation of the Unicode Line Breaking Algorithm (UAX #14)