React Jest --coverage ignore

My folder/ project structure for reusable components (i.e. field types) looks like this:

1. /fields
2. /fields/text
3. /fields/radio
4. /fields/checkbox
5. /fields/...
6. /fields/index.jsx (which only reexports each of above for simpler importing purposes)

now when i run jet --coverage i get index.jsx which is just a import/export proxy included into coverage report, is there a way to configure jest runner to ignore "such" files ?

Thanks