TypeScript Best Practices for 2026

TypeScript has become the de facto standard for building large-scale JavaScript applications. Here are some best practices to follow.

Use Strict Mode

Always enable strict mode in your tsconfig.json. This catches more errors at compile time and helps you write more robust code.

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

Avoid Any Types

The any type defeats the purpose of using TypeScript. Instead, use unknown when you truly don't know the type.