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babel 7 inconsistent transformation

See original GitHub issue

🐛 Bug Report

When upgrading to babel 7 some files are not being transformed. I have both babel-core@7.0.0-bridge.0 and babel-jest installed.

Example error message: screen shot 2018-09-21 at 1 23 08 pm

To Reproduce

https://github.com/chrisblossom/backtrack/tree/babel-7

git clone https://github.com/chrisblossom/backtrack.git
cd backtrack
git checkout babel-7
npm install
npm run test

jest --clearCache sometimes helps some tests pass.

Expected behavior

All tests pass.

Link to repl or repo (highly encouraged)

https://github.com/chrisblossom/backtrack/tree/babel-7 https://github.com/chrisblossom/backtrack/commit/697617c7f499c2c8e4c0dd2b7056c1d070a10fcf

Run `npx envinfo --preset jest`

  System:
    OS: macOS High Sierra 10.13.6
    CPU: x64 Intel(R) Core(TM) i9-8950HK CPU @ 2.90GHz
  Binaries:
    Node: 8.11.4 - ~/.nvm/versions/node/v8.11.4/bin/node
    Yarn: 1.9.4 - /usr/local/bin/yarn
    npm: 6.4.1 - ~/.nvm/versions/node/v8.11.4/bin/npm
  npmPackages:
    jest: ^23.6.0 => 23.6.0

Issue Analytics

State:
Created 5 years ago
Reactions:1
Comments:17 (3 by maintainers)

Top GitHub Comments

2reactions

michaloocommented, Oct 16, 2018

I think the problem is that babel-jest expects babel configuration file babel.config.js to simply return a JS object:

https://github.com/facebook/jest/blob/master/packages/babel-jest/src/index.js#L58

while babel js started to promote a config API which allows to return a function:

https://babeljs.io/docs/en/config-files#config-function-api

and this is what we have in the example repo project:

https://github.com/chrisblossom/backtrack/blob/babel-7/.babelrc.js

0reactions

github-actions[bot]commented, May 12, 2021

This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs. Please note this issue tracker is not a help forum. We recommend using StackOverflow or our discord channel for questions.

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