Inherit, extend, decorate, and override classes and instances.
349 bytes (minified and gzipped).
Extendable to create your first class.
var Car = Extendable;
Which itself can be subclassed.
var Audi = Car;var Toyota = Car;
And whose subclasses can also be subclassed.
var AudiHatchback = Audi;var ToyotaHatchback = Toyota;