After ejecting, testing fails

[eliranbenishai]

Is this a bug report?

Yes.

Did you try recovering your dependencies?

Yes.

Environment

System:
OS: Windows 10
CPU: x64 Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz
Binaries:
Yarn: 1.13.0
npm: 6.2.0

Steps to Reproduce

1. create-react-app testing
2. npm run eject
3. npm test
4. Observe spectacular failure

Expected Behavior

Test should pass just as it did before ejecting.

Actual Behavior

FAIL src/App.test.js ● Test suite failed to run

[BABEL] C:\code\testing\src\App.test.js: Cannot find module '@babel/plugin-transform-react-jsx' (While processing: "C:\\code\\testing\\node_modules\\babel-preset-react-app\\index.js$1")

  at _pluginTransformReactJsx (node_modules/babel-preset-react-app/node_modules/@babel/preset-react/lib/index.js:19:39)
  at _default (node_modules/babel-preset-react-app/node_modules/@babel/preset-react/lib/index.js:73:16)
  at node_modules/@babel/helper-plugin-utils/lib/index.js:19:12
  at loadDescriptor (node_modules/@babel/core/lib/config/full.js:165:14)
  at cachedFunction (node_modules/@babel/core/lib/config/caching.js:33:19)
  at loadPresetDescriptor (node_modules/@babel/core/lib/config/full.js:235:63)

Test Suites: 1 failed, 1 total Tests: 0 total Snapshots: 0 total Time: 1.954s

Help?

[saranshkataria]

Followed the steps mentioned on a Windows 10 machine, but I am not getting the test suite failed.

Test Suites: 1 passed, 1 total

[feugy]

If you eject from a clean installation, you'll have the same.

npx create-react-app my-app
cd my-app
yarn
yarn eject 
yarn test

It's because that dependency is not written in package.json when ejecting.

[mrlubos]

Doesn’t npm i -D @babel/plugin-transform-react-jsx solve this error?

[iansu]

Can you try the latest release and see if this has improved? If not please open a new issue.