Basic Type Annotations

Snippet

Type annotations allow you to explicitly state what type of data a variable should hold, helping catch errors during development.

snippet.ts
typescript
let username: string = "Alice";
let age: number = 30;
let isActive: boolean = true;

Breakdown

let username: string = "Alice";

Declares a variable 'username' that must always be a string.

let age: number = 30;

Declares a variable 'age' that must always be a number.

let isActive: boolean = true;

Declares a variable 'isActive' that must always be a true/false value.

From your library