code.js

// safeGet: read nested path safely, return fallback if path not present
function safeGet(obj, path, fallback = null) {
  return path.split('.').reduce((acc, key) => {
    return acc?.[key];
  }, obj) ?? fallback;
}


// Usage:

const user1 = {
  id: 101,
  name: "Garima",
  address: { city: "Kolkata", pin: 700001 },
};

const user2 = {
  id: 102,
  name: "Geeta",
  // address missing (maybe from incomplete API)
};

console.log(safeGet(user1, "address.city", "Unknown City")); // "Kolkata"
console.log(safeGet(user2, "address.city", "Unknown City")); // "Unknown City"
console.log(safeGet(user2, "preferences.theme", "light"));   // "light"


// Alternative short using optional chaining directly. But safeGet is handy when path is dynamic (string).
const city = user2?.address?.city ?? "Unknown City";