index.ts

//Declaring object with type any
let user:any = { 
  id: 10,
  name: 'Rahul',
  email: 'a@g.com'
}

console.log(user.name)
//Rahul

console.log(user.email)
//a@g.com

console.log(user.number)
// undefined

user.age = 22
console.log(user.age)
// 22