On Fri, Oct 21, 2011 at 1:37 PM, Axel Rauschmayer <[email protected]> wrote:
> 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.
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