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feat: implement CodeMirror editor wrapper component (#54) #75

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Merged
merged 1 commit into from
Jun 6, 2025

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nullcoder
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Summary

Implements a robust CodeMirror 6 editor wrapper component for GhostPaste, following best practices and official documentation.

Changes

CodeEditor Component (components/ui/code-editor.tsx)

  • ✅ Built with CodeMirror 6 best practices using Compartments for dynamic configuration
  • ✅ Supports multiple language modes (JavaScript, TypeScript, Python, HTML, CSS, JSON, etc.)
  • ✅ Light/dark theme switching with system theme integration
  • ✅ Configurable options: line numbers, word wrap, read-only mode
  • ✅ Performance optimizations for large files (500KB+)
  • ✅ Proper monospace font (Geist Mono)
  • ✅ Fixed focus issues with proper state management

Additional Files

  • lib/codemirror-utils.ts: Utility functions for large file optimizations
  • components/ui/code-editor.test.tsx: Comprehensive test suite (13 tests)
  • app/demo/code-editor/page.tsx: Interactive demo page

Technical Details

Best Practices Implemented

  1. Compartments for dynamic configuration updates without recreating the editor
  2. Single editor instance created on mount with proper cleanup
  3. Ref-based onChange to avoid stale closures
  4. Efficient updates using dispatch for configuration changes

Features

  • Syntax highlighting for all installed language modes
  • Auto-completion and bracket matching
  • Search functionality (Cmd/Ctrl + F)
  • Code folding with gutter controls
  • Placeholder text support
  • Custom styling matching design system
  • SSR-safe implementation

Testing

  • ✅ All tests passing (13/13)
  • ✅ ESLint checks pass
  • ✅ TypeScript compilation successful

Demo

Visit /demo/code-editor to test the component with various configurations.

Related Issues

🤖 Generated with Claude Code

- Create CodeEditor component with CodeMirror 6 integration
- Use Compartments for dynamic configuration (best practice)
- Support for multiple language modes (JS, Python, HTML, CSS, etc.)
- Light/dark theme switching with system theme integration
- Configurable options: line numbers, word wrap, read-only mode
- Performance optimizations for large files (500KB+)
- Full TypeScript support with proper types
- Comprehensive test coverage
- Demo page for testing functionality

Features:
- Syntax highlighting for all installed language modes
- Auto-completion and bracket matching
- Search functionality (Cmd/Ctrl + F)
- Code folding with gutter controls
- Placeholder text support
- Custom styling matching design system
- Proper monospace font (Geist Mono)
- Fixed focus issues with proper update handling

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>
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ghostpaste 90fa07d Visit preview Jun 06 2025, 06:14 PM

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Status Name Latest Commit Preview URL Updated (UTC)
✅ Deployment successful!
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ghostpaste 90fa07d Visit preview Jun 06 2025, 06:14 PM

nullcoder added a commit that referenced this pull request Jun 6, 2025
- Mark CodeEditor as complete in TODO.md
- Update PHASE_4_ISSUE_TRACKING.md to show #54 in PR status
- Add note about PR #75 awaiting review
- Update last modified date

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>
@nullcoder nullcoder merged commit 75f3877 into main Jun 6, 2025
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@nullcoder nullcoder deleted the feat/codemirror-editor-component branch June 6, 2025 18:26
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Implement CodeEditor component with CodeMirror v6
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