In my experience, It's pretty rare to see inheritance used in anger in modern JavaScript. Frameworks may have you extend base classes as their primary API, but

In my experience, It's pretty rare to see inheritance used in anger in modern JavaScript. Frameworks may have you extend base classes as their primary API, but they don't tend to encourage that you implement your own deep inheritance tree. I think the last time I personally abused inheritance was when using Backbone.js more than 5 years ago, and that experience was what finally tipped me over the edge to start learning more about functional programming.