const user = {
  profile: {
    name: 'Alice',
    social: null,
    getDetails() {
      return { verified: true };
    }
  }
};

const result = [
  user?.profile?.name,
  user?.profile?.social?.handle,
  user.profile.getDetails?.()?.verified,
  user?.nonExistent?.property
];

console.log(result);

const person = {
  name: 'Alice',
  greet() {
    return `Hello, I'm ${this.name}`;
  },
  farewell: () => `Goodbye from ${this.name}`
};

const greetFn = person.greet;
const farewellFn = person.farewell;

console.log(person.greet());
console.log(greetFn());
console.log(farewellFn());