Include does not work with object despite the specs

[herrjemand]

So I am testing my API, that returns something like this:

{
    "authToken": "osujOkJpGLyhTVc9DBqs37U24PaBpz5CBC8k5Dr2"
}

When I run on response expect(response.body).should.deep.include('authToken'); I get

Uncaught AssertionError: object tested must be an array, a map, an object, a set, a string, or a weakset, but object given

[meeber]

This should be fixed in Chai v4.1.1 and later per chaijs/chai#1012