{"id":2,"title":"Advanced TypeScript Patterns for Better Code","slug":"advanced-typescript-patterns","content":"# Advanced TypeScript Patterns for Better Code\n\nTypeScript has evolved significantly, introducing powerful patterns that can make your code more robust, maintainable, and type-safe. Let's explore some advanced patterns that every TypeScript developer should know.\n\n## 1. Conditional Types\n\nConditional types allow you to create types that depend on conditions:\n\n```typescript\ntype ApiResponse = T extends string \n ? { message: T } \n : { data: T };\n\n// Usage\ntype StringResponse = ApiResponse; // { message: string }\ntype UserResponse = ApiResponse; // { data: User }\n```\n\n## 2. Template Literal Types\n\nCreate string literal types with interpolation:\n\n```typescript\ntype EventName = `on${Capitalize}`;\ntype MouseEvents = EventName<'click' | 'hover'>; // 'onClick' | 'onHover'\n```\n\n## 3. Mapped Types\n\nTransform existing types:\n\n```typescript\ntype Partial = {\n [P in keyof T]?: T[P];\n};\n\ntype Required = {\n [P in keyof T]-?: T[P];\n};\n```\n\n## 4. Utility Types in Practice\n\nCombine utility types for powerful transformations:\n\n```typescript\ninterface User {\n id: number;\n name: string;\n email: string;\n password: string;\n}\n\ntype PublicUser = Omit;\ntype CreateUser = Omit;\ntype UpdateUser = Partial;\n```\n\n## Best Practices\n\n1. **Use strict mode** - Enable strict TypeScript settings\n2. **Leverage type guards** - Create runtime type checking\n3. **Prefer interfaces over types** - For object shapes\n4. **Use const assertions** - For immutable data structures\n\n## Conclusion\n\nThese advanced TypeScript patterns can significantly improve your code quality and developer experience. Start incorporating them into your projects to write more robust and maintainable code.","excerpt":"Explore advanced TypeScript patterns including conditional types, template literals, and mapped types to write better, more type-safe code.","category":"Programming Languages","tags":["TypeScript","Programming","Best Practices","Advanced"],"status":"published","published_at":"2024-01-10 14:30:00","created_at":"2025-10-31 08:43:40","updated_at":"2025-10-31 08:43:40"}

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