lint-staged: jest can't find babel when i'm using gitDir

Hello okonet, thank you for your great work. I’m trying to use jest with lint staged, but when i’m using the “gitDir” option jest can’t find babel-jest and so every test fails.

My config:

{
    "gitDir": "../",
    "linters": {
        "*.js": [
            "prettier --single-quote --trailing-comma all --write",
            "git add",
            "eslint --ignore-path ./gui/.gitignore",
            "jest --config ./gui/jest.json --bail --findRelatedTests"
        ],
        "*.css": [
            "stylelint"
        ]
    }
}

My folder structure: gitFolder -> gui (frontend-app)

^^^^^^ SyntaxError: Unexpected token import at transformAndBuildScript (gui/node_modules/jest-runtime/build/transform.js:320:12)

I think the problem is that jest can’t find babel-jest, because of the “gitDir”-option and so can’t transform the import statement.

When i’m using jest without lint-staged it’s working like a charm.

lint-staged: 3.4.0 jest: 19.0.2 babel-jest: 19.0.0 husky: 0.13.3

I hope you’ve got an idea where the problem comes from. Thank you