---
title: TypeScript Best Practices
date: '2024-03-21'
author: Jakub Kaniecki
excerpt: Essential TypeScript practices for writing better code
---

# TypeScript Best Practices

TypeScript has become the de facto standard for building large-scale JavaScript applications. Let's explore some best practices that will help you write better TypeScript code.

## Type Safety

TypeScript's main benefit is its type system. Here are some key practices:

1. Always define return types for functions
2. Use interfaces for object shapes
3. Leverage type inference when possible
4. Avoid using `any` type

## Example

Here's an example of good TypeScript practices:

```typescript
interface User {
  id: number;
  name: string;
  email: string;
}

function getUserById(id: number): Promise<User> {
  return fetch(`/api/users/${id}`).then(res => res.json());
}
```

## Common Pitfalls

1. Overusing type assertions
2. Ignoring compiler errors
3. Not using strict mode
4. Mixing `any` with strict types

## Tips for Better TypeScript Code

1. Enable strict mode
2. Use type guards
3. Leverage utility types
4. Write proper type definitions

Remember: TypeScript is a tool to help you write better code, not a hindrance! 