Is this an arguments object? It's a harder question than you think.

Fast deep equal

A robust, ES3 compatible, "has own property" predicate.

Is this value a JS SharedArrayBuffer?

A convertor between XML text and Javascript object / JSON text.

Get the ArrayBuffer out of a TypedArray, robustly.

Is this value a JS ArrayBuffer?

Robustly get the byte offset of a Typed Array

Turn any collection of objects into its own efficient tree or linked list using Symbol

What is the type of this builtin JS value?

Robustly get the byte length of a Typed Array

Right To Left conversion for CSS in JS objects

Determine (XDG-compatible) paths for storing application files (cache, config, data, etc)

Get the byteOffset out of a DataView, robustly.

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.

Get the byte length of an ArrayBuffer, even in engines without a `.byteLength` method.

asn1js is a pure JavaScript library implementing this standard. ASN.1 is the basis of all X.509 related data structures and numerous other protocols used on the web

Selector parser with built in methods for working with selector strings.

Test js releases with github actions: debug 2

Get the byteLength out of a DataView, robustly.