Create-react-native-app: Error running eject: TypeError: Cannot read property 'preset' of undefined

[Zewkin]

Hi,

I'm trying to eject the app like a regular React Native project, and getting this error.

• npm ls react-native-scripts: [email protected]
• npm ls react-native: [email protected]
• npm ls expo: [email protected]
• node -v: v. 9.4.0
• npm -v: 5.6.0
• yarn --version: 1.3.2
• watchman version: 4.9.0

Operating system: macOS High Sierra 10.13.3
Phone/emulator/simulator & version: iPhone X emulator

[LeoIannacone]

I have the same issue

[brentvatne]

seems to be related to https://github.com/react-community/create-react-native-app/commit/fcc9629b16265cd04a84c96516f13932c79aa793#diff-71cd56714c1de5f358b099bac7336916R200

you can add a jest key back to your package.json with just "jest": {} and run it again to fix the problem.

a PR to fix this would be appreciated