has-class function part of http://amp.ampersandjs.com.

Check if a CSS selector string has a class.

dom has class function with cache

Does the environment have full property descriptor support? Handles IE 8's broken defineProperty/gOPD.

Check if argv has a specific flag

Does this environment have the ability to get the [[Prototype]] of an object on creation with `__proto__`?

- Add Class: `addClass` - Remove Class: `removeClass` - Has Class: `hasClass` - Toggle Class: `toggleClass`

Check whether or not an element has a class

Returns true if any values exist, false if empty. Works for booleans, functions, numbers, strings, nulls, objects and arrays.

Check if an element has the given class.

Check if a string has ANSI escape codes

Returns true if a value exists, false if empty. Works with deeply nested values using object paths.

Detect native class support.

Style elements relative to other elements in CSS

Check if a project is using Yarn

Determine if the JS environment has Symbol support. Supports spec, or shams.

Determine if the JS environment has `Symbol.toStringTag` support. Supports spec, or shams.

A safer `.hasOwnProperty()`

Determine if the JS environment has BigInt support.

Browser-friendly inheritance fully compatible with standard node.js inherits()