Exercise:

Declare an object kindPerson from the Person interface, where all the properties are required.

interface Person {
    age: number;
    firstName: string;
    lastName?: string;
}
            
let 
w3exercise_input_no_0
: 
w3exercise_input_no_1
 = {
    age: 1800,
    firstName: "Santa",
    lastName: "Claus"
};