TypeError: vuetify_1.default is not a constructor?

Question

Unit testing

Greetings colleagues.
I am writing tests, I ran into an error: TypeError: vuetify_1.default is not a constructor



I searched a lot for information on this problem.
It all comes down to the fact that you need to lock this class.

But how to do it xs.
Tried as in examples jest

Help to understand what's the matter.