What assertive library to use for testing

I am using Cucumber, Protrator to test an angular app. Now since they do not have an assertion library I need to integrate one to write my expectations.

I read that Chai is the most common one, but in my case I need dom testing, so I tried chai-dom, but it has some issues.

What is another assertion library that can be used to test dom an dintegrate with protractor-cucumber?