Supposed I have a private package

node_modules/
 - my_private_package

Now I import the package to my file

//main.ts
import { someFile } from 'my_private_package'

exports function myFn() {
  return somefile.someMethod()
}

Next, I tested my function myFn()

it('can test myFn', async () => {
  const fnct = myFn()

  expect(fnct.statusCode).toEqual(200)
})

"test": "jest --coverage"

After running npm run test how to include the code coverage of somefile.someMethod() that came from my private package on node_modules?