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TypeScript Best Practices

Key practices for writing better TypeScript code.

July 1, 2026
TypeScript
JavaScript
Best Practices

Type Safety

Always define types for your functions and variables.

interface User {
  id: string;
  name: string;
  email: string;
}

function getUser(id: string): User {
  // implementation
}

Avoid Any

Never use any type. Use unknown instead.

Use Interfaces

Define interfaces for your data structures.

Strict Mode

Always enable strict mode in tsconfig.json.

{
  "compilerOptions": {
    "strict": true
  }
}