Shape

.ts

function registerUser(user:{name:string,age:number,gender:string}){
  .... /// some function implementation
}

// let's define some shapes
//ok 
let person1={
  name:'Hojiakbar',
  age:22,
  gender:'male'
};
//  order not important shape important
// ok 
let person2={
  name:'Hojiakbar',
  gender:'male',
  age:22,
  occupation:'student & developer'
}
// this is not Ok give an error and our Shape is not fulled typescript compliant about it
// we have too full the the our defining shape in order to make happy typescipt
let person3={
  name:'Hojiakbar',
  gender:'male'
}