Test if a value is a number.
Test if a value is a Float32Array.
Test if a value is a Float64Array.
Test if a value is a Uint32Array.
Test if a value is a function.
Test if a value is object-like.
Test if a value is a plain object.
Test if a double-precision floating-point numeric value is infinite.
Test if a value is a regular expression string.
Detect native Buffer support.
Parses, serializes, and manipulates MIME types, according to the WHATWG MIME Sniffing Standard
correct invalid SPDX expressions
Synchronous validation of a path existing either as a file or as a directory.
assert with status codes
A robust, ES3 compatible, "has own property" predicate.
Extra assertions on top of node's assert module
Is this value a JS ArrayBuffer?
Is this value a JS SharedArrayBuffer?
Which kind of boxed JS primitive is this?
What is the type of this builtin JS value?
Is this value a JS Typed Array? This module works cross-realm/iframe, does not depend on `instanceof` or mutable properties, and despite ES6 Symbol.toStringTag.
Is this specifier a node.js core module?
Test if a finite numeric value is an odd number.
`Object.getOwnPropertyDescriptor`, but accounts for IE's broken implementation.