var person = {

firstName: "Tom",

lastName: "Hanks",

sayHello: function () { } //Type template

}

person.sayHello = function () {

console.log("hello " + person.firstName)

}

person.sayHello()

//Objects as function parameters

var person2 = {

firstname: "R M Shahidul Islam",

lastname: "Shahed"

};

var invokeperson = function (obj: { firstname: string, lastname: string }) {

console.log("First name :" + obj.firstname)

console.log("Last name :" + obj.lastname)

}

invokeperson(person2)