Cannot import a jest.mock() when running tests with --coverage

Created by: gaelollivier

Steps:

• Create a new app: create-react-app my-app
• Create a new file that does a jest.mock(), ex:

src/mock.js

jest.mock('react-dom', () => {})

• Import this file in App.test.js:

src/App.test.js

import './mock.js'

import React from 'react';
import ReactDOM from 'react-dom';
import App from './App';
...

• Run the tests with --coverage:

npm run test -- --coverage

I get this error:

I can't find a workaround for this, there's no documentation on how to import mocks so I can reuse them.

@cpojer It may be a Jest issue ? Am I doing something wrong ?