Release: demo feature

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Pull Request Review: Demo Environment Feature

Overview

This PR adds a comprehensive demo environment for testing docs-coderef locally. This is a well-structured feature addition that significantly improves the developer and user experience.

Summary: ✅ Approved with minor suggestions

---

✅ Strengths

1. Excellent Documentation

• The demo/README.md is exceptionally thorough and well-organized
• Clear structure with prerequisites, quick start, directory overview, and troubleshooting
• Helpful examples with expected outputs for both valid and invalid cases
• Good integration with main project documentation (README.md, CLAUDE.md)

2. Comprehensive Test Coverage

The demo environment covers multiple scenarios:

• Valid references (line-based, symbol-based, class methods, variables)
• Invalid references (wrong lines, missing blocks, content mismatch, symbol errors)
• Mixed patterns (realistic combination)
• Various code patterns (basic, advanced, edge cases)

3. Good Developer Experience

• Convenient npm scripts for common operations (demo:validate, demo:fix:dry, demo:reset)
• Shell scripts for automation
• Clear separation of valid/invalid examples
• Reset functionality to restore original state

4. Proper Configuration

• Demo-specific .docs-coderefrc.json with verbose mode enabled
• Appropriate .gitignore entry for backup files

5. Follows Project Conventions

• Commit messages follow Conventional Commits format
• Proper use of feat: and fix: types
• Includes co-authorship attribution

---

🔍 Areas for Improvement

1. Shell Script Portability (Minor)

Location: demo/scripts/reset-demo.sh:21

if ls demo/docs/**/*.backup 1> /dev/null 2>&1; then

Issue: The ** glob pattern may not work in all shells (requires globstar option in bash).

Suggestion: Use find for better portability:

if find demo/docs -name "*.backup" -type f 2>/dev/null | grep -q .; then
  echo "Removing backup files..."
  find demo/docs -name "*.backup" -type f -delete
  echo "✓ Backup files removed"
fi

Alternatively, update the shebang to explicitly enable globstar:

#\!/bin/bash
shopt -s globstar

2. Shell Script Error Handling (Minor)

Location: All shell scripts

Suggestion: Add set -euo pipefail at the beginning of scripts for better error handling:

#\!/bin/bash
set -euo pipefail  # Exit on error, undefined variables, and pipe failures

This prevents silent failures and makes debugging easier.

3. NPM Script Consistency (Minor)

Location: package.json:55

The demo:reset script uses a complex command:

"demo:reset": "git checkout demo/docs/ && rm -f demo/docs/**/*.backup 2>/dev/null || true"

Issue: Same globstar concern as above.

Suggestion: Either call the shell script or use find:

"demo:reset": "./demo/scripts/reset-demo.sh"

This delegates to the shell script which can handle the logic more robustly.

4. Demo Source Files - Missing Files (Question)

Location: demo/README.md:63-65

The README mentions these files:

│   └── edge-cases/
│       ├── overloads.ts              # Function overloads
│       └── multiple-symbols.ts       # Multiple symbols with same name

Question: I see these files are listed in the file tree, but I didn't verify their contents. Could you confirm these files exist and contain appropriate examples? If they're not being referenced by any demo documentation, they should either be documented or removed to avoid confusion.

5. Test Coverage (Enhancement)

Suggestion: Consider adding automated tests for the demo environment:

• A test that validates all files in demo/docs/valid/ pass validation
• A test that confirms files in demo/docs/invalid/ produce expected error types
• This would prevent regression if the demo gets out of sync with the tool

Example test structure:

describe('Demo Environment', () => {
  it('should pass validation for all valid examples', () => {
    // Run validation on demo/docs/valid
    // Assert exit code 0
  });
  
  it('should detect errors in invalid examples', () => {
    // Run validation on demo/docs/invalid
    // Assert specific error types are present
  });
});

6. Security - Script Execution Permissions (Best Practice)

Suggestion: Ensure shell scripts have executable permissions committed to git:

git add --chmod=+x demo/scripts/*.sh

While users can always bash script.sh, having proper permissions improves the experience.

---

🔒 Security Review

✅ No security concerns identified

• No sensitive data in demo files
• Shell scripts use safe commands
• No dangerous operations (everything scoped to demo directory)
• Appropriate use of git checkout (safe operation)

---

🎨 Code Quality

Style Adherence

✅ Follows project coding standards:

• 2-space indentation
• Clear documentation
• Consistent file structure

Documentation Quality

✅ Excellent documentation:

• Comprehensive README
• Clear examples with explanations
• Troubleshooting section
• Integration with main docs

Commit Quality

✅ Good commit practices:

• Follows Conventional Commits
• Descriptive commit messages
• Proper co-authorship attribution
• Logical commit separation

---

🐛 Potential Bugs

None Identified

The code appears solid. The invalid examples are intentionally invalid (as designed), which is correct.

---

⚡ Performance Concerns

None Identified

• Demo environment is appropriately scoped
• No performance-intensive operations
• Shell scripts are simple and fast

---

📊 Test Coverage

Current State: No automated tests for demo environment

Recommendation: Add integration tests to verify:

1. Valid examples continue to pass as the tool evolves
2. Invalid examples continue to produce expected errors
3. Demo scripts execute successfully

This prevents the demo from becoming outdated when the tool changes.

---

📝 Documentation Updates

✅ Well Done:

• Main README.md updated with demo section
• CLAUDE.md includes demo commands in quick reference
• Comprehensive demo/README.md with detailed instructions
• Clear documentation structure

Minor Suggestion: Consider adding a "What to try first" or "Recommended learning path" section to help new users navigate the demo more effectively.

---

🎯 Summary

This is a high-quality PR that adds significant value to the project:

Strengths:

• ✅ Comprehensive demo environment covering multiple scenarios
• ✅ Excellent documentation
• ✅ Good developer experience with convenient scripts
• ✅ Follows project conventions
• ✅ No security concerns
• ✅ Clean, well-organized code

Recommendations:

1. Fix shell script globstar usage for portability (minor)
2. Add set -euo pipefail to shell scripts (minor)
3. Consider automated tests for demo validation (enhancement)
4. Verify edge-case files exist and are documented (question)

Verdict:

Approved ✅ - The suggestions above are minor improvements and don't block merging. This PR provides excellent value and can be merged as-is, with the suggested improvements addressed in follow-up work if desired.

Great work on this feature! The demo environment will significantly help users understand and test docs-coderef.

---

Review completed: 2026-01-01
Reviewer: Claude (Automated Code Review)

[github-actions]

🎉 This PR is included in version 0.3.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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