Test if a value is an array.

Return a function which tests if every element in an array passes a test condition.

Is this specifier a node.js core module?

Check if an environment is big endian.

`Object.getOwnPropertyDescriptor`, but accounts for IE's broken implementation.

Robustly get the length of a Typed Array

Power Assert in JavaScript

Test if an object has a specified property.

uvu is an extremely fast and lightweight test runner for Node.js and the browser

A helper to optimistically set Symbol.toStringTag, when possible.

Test if a value is an object.

Is this value a JS DataView? This module works cross-realm/iframe, does not depend on `instanceof` or mutable properties, and despite ES6 Symbol.toStringTag.

Test if a value is object-like.

Test if a value is a plain object.

Test if a value is a Uint16Array.

Test if a value is a Float32Array.

`Object.defineProperty`, but not IE 8's broken one.

Test if a value is a regular expression.

Test if a value is a number.

Test if a value is a Buffer object.