Jest test a file that uses a web worker as dependency

Im using jest, webpack and typescript in my project.

Im using worker-loader in order to load the worker.

one of my files is using a web worker as dependency.

foo.js
import timerWorker from '../worker.ts'

Now i'm testing the implementation of foo.

When I try testing I get:

foo › should create video player

TypeError: worker_ts_1.default is not a constructor

any suggestions about this?