instanceof check with multiple mixins

[allmarkedup]

Hi - I'm just exploring this way of implementing mixins and I'm really liking it. However one thing that I've noticed is that the instanceofcheck doesn't work as I expected when using multiple mixins when doing something like:

class D extends mix(A).with(B, C)

In this case D instanceof B will be true, however D instanceof C will be false.

Is there any way to work around this? Or have I misunderstood how the @@ hasInstance support is supposed to work?

[justinfagnani]

@@hasInstance support isn't very available yet. In the meantime I've added the function hasMixin(obj, mixin).