Fix exports

[trurl-master]

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[claude]

Claude finished @trurl-master's task —— View job

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PR Review: Fix exports

Review Checklist:

• Read and analyze the package.json changes
• Evaluate export structure and compatibility
• Check for potential bugs or breaking changes
• Assess performance implications
• Review security considerations
• Provide comprehensive feedback

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Review Summary

This PR improves the package exports structure by adding explicit type definitions for both import and require conditions. Overall, this is a positive change that enhances TypeScript support and module resolution.

✅ Strengths

1. Enhanced TypeScript Support: The new exports structure explicitly defines type paths for both ESM and CJS consumers, improving IDE intellisense and type checking.

2. Modern Package Standards: Following the Node.js conditional exports specification with proper type definitions is a best practice for dual-format packages.

3. Backward Compatibility: The changes maintain existing functionality while adding better type resolution.

4. Consistent with Build Configuration: The export paths align well with the tsup configuration (format: ["cjs", "esm"], dts: true, legacyOutput: true).

⚠️ Potential Issues

1. Missing CommonJS Type Declaration: The require condition references ./dist/index.d.cts, but tsup typically generates .d.ts files by default. You should verify that:

   • The .d.cts file is actually generated during build
   • Or update the path to ./dist/index.d.ts if that's what tsup produces

2. Build Output Verification Needed: Since this changes how types are resolved, it's crucial to:

   • Run npm run build to verify all referenced files are generated
   • Test both import and require scenarios in consuming projects

🔧 Recommendations

1. Verify Build Output: After building, confirm these files exist:

   dist/index.js           # CJS main
   dist/esm/index.js       # ESM main  
   dist/index.d.ts         # ESM types
   dist/index.d.cts        # CJS types (if generated)
   

2. Consider Testing: Add integration tests that verify both import styles work correctly:

   // ESM
   import { mockIntersectionObserver } from 'jsdom-testing-mocks';
   
   // CJS  
   const { mockIntersectionObserver } = require('jsdom-testing-mocks');

3. Documentation: Consider updating README with export information if consumers need to know about the dual-format support.

🔒 Security & Performance

• Security: No security concerns with these changes
• Performance: Negligible impact - only affects module resolution at build/runtime startup

🧪 Test Coverage

The changes don't directly affect test coverage, but consider adding integration tests to verify the export structure works correctly in consuming applications.

Conclusion

This is a well-structured enhancement to the package.json exports. The main concern is verifying that the referenced type declaration files are actually generated by the build process. Once confirmed, this change will significantly improve the developer experience for TypeScript users.

Recommendation: ✅ Approve after verifying build output

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