fix: remove react/no-multi-comp alias to enable strict oxlint version

[skoshx]

Summary

Removes the alias from react/no-multi-comp to react-doctor/no-multi-comp to resolve issue #1639.

Problem

The alias react/no-multi-comp → react-doctor/no-multi-comp created an expectation mismatch:

• oxlint's react/no-multi-comp: Strict "one component per file" rule (fires on 2+ components)
• react-doctor's react-doctor/no-multi-comp: Lenient with corpus-informed exemptions (fires on 3+ components with specific exceptions)

Users writing react/no-multi-comp in their config expected oxlint's strict behavior but got react-doctor's lenient version instead. There was no way to access oxlint's strict version through react-doctor config.

Solution

Remove the alias so users can explicitly choose:

1. Lenient (react-doctor version): Explicitly use react-doctor/no-multi-comp in config
2. Strict (oxlint version): Create .oxlintrc.json with:

   {
     "plugins": ["react"],
     "rules": {"react/no-multi-comp": "error"}
   }

Why the lenient version exists

React Doctor's no-multi-comp was intentionally designed with exemptions based on corpus analysis to avoid false positives in real-world patterns:

• Files with ≤2 components: Common "1 main + 1 helper" co-location
• Feature modules: 1-2 public exports + N private helpers
• Barrel files: Mostly-exported components (design systems, icon libraries)
• All-exported files: Component primitive files (Alert + AlertTitle + AlertDescription)

These exemptions are well-tested (see regression tests) and reflect production React code patterns.

Migration

Users who previously configured react/no-multi-comp and relied on the lenient behavior should update their config to explicitly use react-doctor/no-multi-comp. The rule continues to run by default with unchanged behavior.

Testing

• ✅ Unit tests for alias removal
• ✅ Regression test for reported case
• ✅ Documentation explaining exemptions and how to use oxlint's strict version
• ✅ All existing no-multi-comp tests pass

Closes

Closes #1639

  

[pkg-pr-new]

Open in StackBlitz

npm i https://pkg.pr.new/eslint-plugin-react-doctor@1640

npm i https://pkg.pr.new/oxlint-plugin-react-doctor@1640

npm i https://pkg.pr.new/react-doctor@1640

commit: 41ace7f

[github-actions]

Interactive terminal E2E

Terminal Control verified the built CLI at 41ace7f in a real PTY:

• selected a project interactively and observed Scanning... before the three-second Git delay completed
• waited for the clean result and exercised the compact report
• opened copy context and the GitHub Actions confirmation, then cancelled safely

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