Jest: Property '$style' does not exist on type 'Vue'

Hello.
There is a project in Nuxt 2.
I have a component is module CSS :

 <div :class="$style.test"></div>

 <div :class="$style.test"></div>

And I want to check that this class exist. My test is:

const wrapper = shallowMount(ComponentFindError)
    expect(wrapper.classes()).toContain(wrapper.vm.$style.test)

const wrapper = shallowMount(ComponentFindError)
    expect(wrapper.classes()).toContain(wrapper.vm.$style.test)

But I recieve the error:

Property '$style' does not exist on type 'Vue'.

Property '$style' does not exist on type 'Vue'.

What is correct way to check if such class exists?