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| 1 | +# Cursor Rules for Medusa2 Starter |
| 2 | + |
| 3 | +This directory contains comprehensive cursor rules for the Medusa2 starter project, designed to ensure consistent code quality, architectural patterns, and development practices across the entire codebase. |
| 4 | + |
| 5 | +## 📁 Rule Organization |
| 6 | + |
| 7 | +Our cursor rules are organized following best practices for maintainability and clarity: |
| 8 | + |
| 9 | +``` |
| 10 | +.cursor/rules/ |
| 11 | +├── medusa-backend.mdc # Backend API, modules, workflows |
| 12 | +├── medusa-admin.mdc # Admin UI components and patterns |
| 13 | +├── typescript-patterns.mdc # TypeScript conventions |
| 14 | +├── remix-hook-form-migration.mdc # Form migration patterns |
| 15 | +└── README.md # This file |
| 16 | +``` |
| 17 | + |
| 18 | +## 🎯 Rule Categories |
| 19 | + |
| 20 | +### 1. **Medusa Backend** (`medusa-backend.mdc`) |
| 21 | +**Scope**: `apps/medusa/src/api/**/*`, `apps/medusa/src/modules/**/*`, `apps/medusa/src/workflows/**/*` |
| 22 | + |
| 23 | +Covers: |
| 24 | +- API endpoint patterns and structure |
| 25 | +- Module development (models, services, migrations) |
| 26 | +- Workflow and step implementation |
| 27 | +- Database patterns and migrations |
| 28 | +- Type definitions for backend APIs |
| 29 | +- Security and validation patterns |
| 30 | +- Performance optimization |
| 31 | +- Testing strategies |
| 32 | + |
| 33 | +**Key Patterns**: |
| 34 | +- Workflow-first architecture for business logic |
| 35 | +- Consistent API response structures |
| 36 | +- Proper error handling and rollback mechanisms |
| 37 | +- Type-safe service resolution from container |
| 38 | + |
| 39 | +### 2. **Medusa Admin** (`medusa-admin.mdc`) |
| 40 | +**Scope**: `apps/medusa/src/admin/**/*` |
| 41 | + |
| 42 | +Covers: |
| 43 | +- React component architecture and composition |
| 44 | +- Custom hooks with TanStack Query |
| 45 | +- Form handling with React Hook Form |
| 46 | +- State management patterns |
| 47 | +- UI component usage (Medusa UI) |
| 48 | +- Routing and navigation |
| 49 | +- Performance optimization |
| 50 | +- Accessibility best practices |
| 51 | + |
| 52 | +**Key Patterns**: |
| 53 | +- Controlled form components with proper typing |
| 54 | +- Consistent list item and sidebar components |
| 55 | +- Declarative state management |
| 56 | +- Proper error handling with toast notifications |
| 57 | + |
| 58 | +### 3. **TypeScript Patterns** (`typescript-patterns.mdc`) |
| 59 | +**Scope**: `**/*.ts`, `**/*.tsx` |
| 60 | + |
| 61 | +Covers: |
| 62 | +- Strict type safety practices |
| 63 | +- Interface and type definitions |
| 64 | +- Generic patterns and constraints |
| 65 | +- Utility type usage |
| 66 | +- Error handling types |
| 67 | +- React component typing |
| 68 | +- Module declarations |
| 69 | +- Testing type utilities |
| 70 | + |
| 71 | +**Key Patterns**: |
| 72 | +- Branded types for ID safety |
| 73 | +- Result pattern for error handling |
| 74 | +- Proper generic constraints |
| 75 | +- Type-only imports |
| 76 | + |
| 77 | +### 4. **Form Migration** (`remix-hook-form-migration.mdc`) |
| 78 | +**Scope**: Form-related files during migration |
| 79 | + |
| 80 | +Covers: |
| 81 | +- Migration from remix-validated-form to @lambdacurry/forms |
| 82 | +- Yup to Zod schema conversion |
| 83 | +- React Hook Form integration patterns |
| 84 | +- Error handling updates |
| 85 | +- Response structure changes |
| 86 | + |
| 87 | +## 🚀 Usage Guidelines |
| 88 | + |
| 89 | +### Automatic Application |
| 90 | +Most rules are set to `alwaysApply: true` and will automatically activate based on file patterns (globs). This ensures consistent application across the codebase. |
| 91 | + |
| 92 | +### Manual Application |
| 93 | +For specific contexts or when working on particular features, you can manually attach rules using Cursor's rule selection interface. |
| 94 | + |
| 95 | +### Rule Priority |
| 96 | +When multiple rules apply to the same file: |
| 97 | +1. More specific rules (narrower globs) take precedence |
| 98 | +2. Feature-specific rules override general patterns |
| 99 | +3. TypeScript patterns apply broadly but defer to framework-specific rules |
| 100 | + |
| 101 | +## 🎨 Best Practices Enforced |
| 102 | + |
| 103 | +### Code Quality |
| 104 | +- ✅ Strict TypeScript usage with no `any` types |
| 105 | +- ✅ Comprehensive error handling |
| 106 | +- ✅ Consistent naming conventions |
| 107 | +- ✅ Proper component composition |
| 108 | +- ✅ Type-safe API interactions |
| 109 | + |
| 110 | +### Architecture |
| 111 | +- ✅ Workflow-based backend operations |
| 112 | +- ✅ Modular component design |
| 113 | +- ✅ Separation of concerns |
| 114 | +- ✅ Consistent state management |
| 115 | +- ✅ Proper abstraction layers |
| 116 | + |
| 117 | +### Performance |
| 118 | +- ✅ Optimized React components with memo/useMemo |
| 119 | +- ✅ Efficient database queries |
| 120 | +- ✅ Proper caching strategies |
| 121 | +- ✅ Lazy loading and code splitting |
| 122 | + |
| 123 | +### Security |
| 124 | +- ✅ Input validation with Zod schemas |
| 125 | +- ✅ Authenticated request handling |
| 126 | +- ✅ Proper error message sanitization |
| 127 | +- ✅ Type-safe API boundaries |
| 128 | + |
| 129 | +## 🔧 Maintenance |
| 130 | + |
| 131 | +### Regular Updates |
| 132 | +These rules should be updated when: |
| 133 | +- Framework versions change (Medusa, React, etc.) |
| 134 | +- New architectural patterns are established |
| 135 | +- Team conventions evolve |
| 136 | +- New best practices emerge |
| 137 | + |
| 138 | +### Testing Rules |
| 139 | +Periodically test rules with: |
| 140 | +- Diverse code generation prompts |
| 141 | +- Edge case scenarios |
| 142 | +- New feature development |
| 143 | +- Refactoring operations |
| 144 | + |
| 145 | +### Quality Assurance |
| 146 | +Monitor generated code for: |
| 147 | +- Adherence to established patterns |
| 148 | +- Proper error handling |
| 149 | +- Type safety compliance |
| 150 | +- Performance considerations |
| 151 | + |
| 152 | +## 📚 Related Documentation |
| 153 | + |
| 154 | +- [Medusa v2 Documentation](https://docs.medusajs.com/v2) |
| 155 | +- [React Hook Form Guide](https://react-hook-form.com/) |
| 156 | +- [TanStack Query Documentation](https://tanstack.com/query/latest) |
| 157 | +- [Medusa UI Components](https://ui.medusajs.com/) |
| 158 | +- [TypeScript Handbook](https://www.typescriptlang.org/docs/) |
| 159 | + |
| 160 | +## 🤝 Contributing |
| 161 | + |
| 162 | +When adding or modifying rules: |
| 163 | + |
| 164 | +1. **Follow the established structure** with proper YAML frontmatter |
| 165 | +2. **Include concrete examples** for both correct and incorrect patterns |
| 166 | +3. **Test thoroughly** with various prompts and scenarios |
| 167 | +4. **Update this README** when adding new rule categories |
| 168 | +5. **Consider rule interactions** and potential conflicts |
| 169 | + |
| 170 | +### Rule Quality Checklist |
| 171 | +- [ ] Clear description and scope definition |
| 172 | +- [ ] Proper glob patterns for file targeting |
| 173 | +- [ ] Concrete code examples with explanations |
| 174 | +- [ ] Edge case handling |
| 175 | +- [ ] Integration with existing rules |
| 176 | +- [ ] Performance considerations |
| 177 | +- [ ] Security implications |
| 178 | + |
| 179 | +## 🎯 Goals |
| 180 | + |
| 181 | +These cursor rules aim to: |
| 182 | + |
| 183 | +1. **Accelerate Development**: Reduce decision fatigue with clear patterns |
| 184 | +2. **Ensure Consistency**: Maintain uniform code quality across the team |
| 185 | +3. **Prevent Common Mistakes**: Catch anti-patterns before they enter the codebase |
| 186 | +4. **Facilitate Onboarding**: Help new team members understand established conventions |
| 187 | +5. **Support Scalability**: Ensure patterns work well as the codebase grows |
| 188 | + |
| 189 | +## 📈 Success Metrics |
| 190 | + |
| 191 | +Effective cursor rules should result in: |
| 192 | +- Faster feature development |
| 193 | +- Fewer code review comments on patterns/style |
| 194 | +- More consistent codebase architecture |
| 195 | +- Reduced debugging time |
| 196 | +- Improved code maintainability |
| 197 | + |
| 198 | +--- |
| 199 | + |
| 200 | +*Last updated: May 29, 2025* |
| 201 | +*For questions or suggestions, please reach out to the development team.* |
| 202 | + |
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