fix: export package.json

[chenjiahan]

Summary

@rspack/lite-tapable/package.json cannot currently be resolved because the package export map only exposes the root entry. This PR exports ./package.json and adds regression coverage for package subpath resolution.

Related Links

• chore(deps): replace tapable with lite-tapable web-infra-dev/rsdoctor#1855

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: 84beee6c-b038-48af-9a96-063ae642ac59

📥 Commits

Reviewing files that changed from the base of the PR and between 952d2aa and c3e07f9.

📒 Files selected for processing (2)

• package.json
• test/PackageExports.test.js

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📝 Walkthrough

Walkthrough

The package exports map adds an explicit ./package.json subpath pointing to the package manifest. A Jest test requires @rspack/lite-tapable/package.json and verifies that its name field is @rspack/lite-tapable.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly summarizes the main change: exporting package.json from the package.
Description check	✅ Passed	The description directly matches the changes by explaining the new package.json export and regression test coverage.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch chenjiahan/fix-package-json-export

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