> It might make sense to provide this as standard functionality:
> - Testing if one type is a subtype of another type.
> - Returning all supertypes of a given type.
>
> This is especially useful if a type can significantly change the behavior of
> its subtypes and if there should ever be several ways of handling inheritance
> in ES.
>
> What are you suggesting exactly? Javascript doesn't have structural typing,
> sadly. But in the type system we do have instanceof and getPrototypeOf can
> already be used to this effect.
For example:
function inheritsFrom(constr1, constr2) {
constr2.prototype.isPrototypeOf(constr2.prototype);
}
--
Dr. Axel Rauschmayer
[email protected]
home: rauschma.de
twitter: twitter.com/rauschma
blog: 2ality.com
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