Cannot import default Jest CLI options

[dyatko]

💥 Regression Report

We have an internal developer tooling, which extends jest-cli for our needs by adding few special CLI options.
In order to support all default Jest CLI options, we import them from jest-cli/build/cli/args.

Since Jest v27, the package exports were limited and we're not able to upgrade:

Error [ERR_PACKAGE_PATH_NOT_EXPORTED]: Package subpath './build/cli/args' is not defined by "exports"

Last working version

Worked up to version: 26

Stopped working in version: 27

To Reproduce

Steps to reproduce the behavior:

import {options} from 'jest-cli/build/cli/args';

console.log(options);

Expected behavior

To see the options

Run npx envinfo --preset jest

Paste the results here:

  System:
    OS: macOS 11.2.3
    CPU: (16) x64 Intel(R) Core(TM) i9-9980HK CPU @ 2.40GHz
  Binaries:
    Node: 14.15.1 - ~/.nvm/versions/node/v14.15.1/bin/node
    Yarn: 1.22.10 - ~/Dev/pacman/node_modules/.bin/yarn
    npm: 6.14.8 - ~/.nvm/versions/node/v14.15.1/bin/npm

[sforner405]

Is there a workaround?

[adamma1024]

Look at the code as follow:
https://github.com/facebook/jest/blob/67c1aa20c5fec31366d733e901fee2b981cb1850/packages/jest-cli/package.json#L7-L14

I have a similar question for:

import { buildArgv } from 'jest-cli/build/cli/index';
import init from 'jest-cli/build/init';

Since v27, jest-cli didn't export the build folder anymore. I can understand that this way may be "better" for modules. But I still think that it's a breaking change. Cause I can import them before(v26), and I can't import them now(v27). And v27 didn't supply some "remedies".

@SimenB

[adamma1024]

Btw, the NodeEnvironment class removed the runScript function, and I didn't find it ChangeLog too.

[SimenB]

This is not a regression, you used unsupported and undocumented APIs.

Please open new a feature request asking for what it is you need. Just "I did this, please enable it" is an example of https://xyproblem.info/. Please describe what you want to do, not how you want to do it.

Also note that Jest does not really have a supported programmatic API (tracked in #5048), but minor changes to enable workarounds are always possible.

---

But I still think that it's a breaking change. Cause I can import them before(v26), and I can't import them now(v27).

Breaking changes are literally the point of major releases, not sure what your point is.

https://github.com/facebook/jest/blob/7a05a6c9de73791e40f1c60405913cbc5897b417/CHANGELOG.md?plain=1#L492

Btw, the NodeEnvironment class removed the runScript function, and I didn't find it ChangeLog too.

https://github.com/facebook/jest/blob/7a05a6c9de73791e40f1c60405913cbc5897b417/CHANGELOG.md?plain=1#L455

[adamma1024]

Thanks for your response. It's a totally xyproblem, lol. And sorry for my carelessness, I'll open a feature issue to report my requirements.

[github-actions]

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