Subclass Packages

Simply create subclassed Error functions

create a bunch of custom errors

Assorted base classes extending native classes so that they can be subclassed properly when using Babel 6.x+

Inherit, extend, decorate, and override classes and instances.

Provides a syntax for prototypal inheritance that also allows for arrays that inherit from a custom prototype

basic utility to augment a constructor

Array info to use with augment-with functionality

Easily subclass errors

Returns true if A is a subclass of B.

Class.js is a Javascript library designed to allow easy, non-obtrusive creation of Java-like classes without requiring a cross-compiler, and without otherwise interfering with the capabilities of Javascript.

Use the @extend at-rule and functional selectors in CSS

A port of PrototypeJS's class-based OOP system.

Use the @extend at-rule and functional selectors in CSS

Detect native class support.

Detect native class support.