Guest

// Every learner on RivoCode is, first and foremost, a developer.
interface Developer {
  firstName: string;
  lastName: string;
  handle: string;
  memberSince: string;
}

const currentUser: Developer = {
  firstName: "Guest",
  lastName: "Developer",
  handle: "@guest",
  memberSince: "—",
};

function introduce(dev: Developer): string {
  return `Hi, I'm ${dev.firstName} ${dev.lastName}, learning since ${dev.memberSince}.`;
}

console.log(introduce(currentUser));