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title: "TypeScript Best Practices 2024"
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date: 2024-07-18
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categories: ["tech", "tutorial"]
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tags: ["typescript", "javascript", "best-practices"]
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---
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# TypeScript Best Practices 2024
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Essential TypeScript patterns and practices for better code quality.
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## Type Definitions
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```typescript
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// Use interfaces for object shapes
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interface User {
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id: string;
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name: string;
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email: string;
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createdAt: Date;
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}
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// Use type aliases for unions
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type Status = 'loading' | 'success' | 'error';
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// Generic constraints
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interface Repository<T extends { id: string }> {
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findById(id: string): Promise<T>;
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save(entity: T): Promise<T>;
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}
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```
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## Utility Types
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```typescript
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// Partial for updates
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function updateUser(id: string, updates: Partial<User>) {
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// Implementation
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}
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// Pick for specific fields
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type UserSummary = Pick<User, 'id' | 'name'>;
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// Omit for exclusions
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type CreateUser = Omit<User, 'id' | 'createdAt'>;
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```
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## Best Practices
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1. Enable strict mode
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2. Use unknown instead of any
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3. Prefer type assertions over type casting
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4. Use const assertions for immutable data
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TypeScript makes JavaScript development so much safer!
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