[Bug]: Support {m,c}{j,t}s file extensions for tests and modules

[nickserv]

Version

29.5.0

Steps to reproduce

1. Clone https://gist.github.com/nickmccurdy/c8f81c3f7c3587a15199ebcf151ed555
2. npm install-test

Expected behavior

Jest runs all tests.

Actual behavior

Jest only runs tests with extensions:

• js
• jsx
• ts
• tsx

Jest doesn't run tests with extensions:

• mjs
• cjs
• mts
• cts

Additional context

• All of these extensions are missing from testMatch and testRegex.
• mts and mts are missing from moduleFileExtensions.
• All of these extensions are supposed by VSCode and Vitest.

Environment

System:
    OS: macOS 12.6.5
    CPU: (4) x64 Intel(R) Core(TM) i5-5257U CPU @ 2.70GHz
  Binaries:
    Node: 20.1.0 - /usr/local/bin/node
    Yarn: 1.22.19 - /usr/local/bin/yarn
    npm: 9.6.6 - /usr/local/bin/npm
  npmPackages:
    jest: 29.5.0 => 29.5.0

[github-actions]

This issue is stale because it has been open 30 days with no activity. Remove stale label or comment or this will be closed in 30 days.

[nickserv]

This is still an issue.

[github-actions]

This issue is stale because it has been open 30 days with no activity. Remove stale label or comment or this will be closed in 30 days.

[nickserv]

This is still an issue.

[mrazauskas]

I think it would be fine to add cts and mts to moduleFileExtensions. This looks similar to cjs and mjs being added in #12578. Note that this is a breaking change.

Not sure about testMatch and testRegex. Actually, why not? ;D But that should be a separate PR and it is a breaking change too.

[yinm]

Can I try to fix it?

[mrazauskas]

Sure. As I mentioned, these are breaking changes, so PRs can only land with the next major release. It is fine to open them now, of course.

[yinm]

Probably, this issue needs to be open.
#14369 only solved the following problem (one of Additional context).

mts and mts are missing from moduleFileExtensions.

[github-actions]

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[SimenB]

https://github.com/jestjs/jest/releases/tag/v30.0.0-alpha.1