TypeScript Tips and Tricks - Blog

Here are some essential TypeScript tips that will help you write better code!

1. Use Type Inference

TypeScript is smart enough to infer types in many cases:

// Let TypeScript infer the type
const numbers = [1, 2, 3]; // Type: number[]
const user = {
  name: "John",
  age: 30,
}; // Type: { name: string; age: number }

2. Strict Mode is Your Friend

Always enable strict mode in your tsconfig.json:

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

3. Use Type Aliases and Interfaces

Keep your code DRY with type aliases and interfaces:

type UserRole = "admin" | "user" | "guest";
 
interface User {
  id: number;
  name: string;
  role: UserRole;
}

1. Use Type Inference

2. Strict Mode is Your Friend

3. Use Type Aliases and Interfaces

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