Making an Object look like an Array in a native addon

I'm implementing a native module for node and trying to return something that looks like an array but is backed by native data. At the moment I'm creating an ObjectTemplate and using SetIndexedPropertyHandler so I can handle attempts to get indexes from JS. This all works, but from JS this just looks like an Object, not an Array. Is there any way I can make this look more like an array?

Submitted December 25, 2016 at 08:07PM by Mossop