TypeScript Best Practices for 2024

TypeScript has become the standard for building large-scale JavaScript applications. Here are the best practices you should follow in 2024.

Use Strict Mode

Always enable strict mode in your tsconfig.json:

1{
2  <span <span class="text-purple-<span class="text-orange-400">400span> font-semibold">classspan>="text-green-<span class="text-orange-400">400span>">"compilerOptions"span>: {
3    <span <span class="text-purple-<span class="text-orange-400">400span> font-semibold">classspan>="text-green-<span class="text-orange-400">400span>">"strict"span>: true
4  }
5}

Type Everything

Avoid using any type. Instead:

• Use `unknown` for truly unknown types
• Create proper interfaces and types
• Leverage type inference when possible

Advanced Types

Master these advanced TypeScript features:

• Conditional types
• Mapped types
• Template literal types
• Utility types

Conclusion

Following these best practices will help you build more reliable TypeScript applications.