Components

const greeting: string = "Hello World";
        
const greeting: string
console.log(greeting);

const numbers = [1, 2, 3];
       
const numbers: number[]
const doubled = numbers.map(n => n * 2);
       
const doubled: number[]

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

const user: User = {
  id: 1,
  name: "John Doe",
  email: "john@example.com"
};

// Hover over these to see type information
user.name;
     
User.name: string

const num: number = "not a number";
Type 'string' is not assignable to type 'number'.