TS2532 Error: Object is possibly 'undefined' in TypeScript — how to fix?

Hello everyone! I'm new to TypeScript and working on a project with Firebase Cloud Functions and Firestore. I have a function that retrieves data from a Firestore document and processes it. But TypeScript keeps throwing error TS2532: "Object is possibly 'undefined'". Here's my code: ```typescript import * as functions from 'firebase-functions'; import * as admin from 'firebase-admin'; admin.initializeApp(); export const processUserData = functions.firestore .document('users/{userId}') .onCreate(async (snap, context) => { const data = snap.data(); const userName = data.name; // TS2532 error here const userAge = data.age; // And here too console.log(`User ${userName} is ${userAge} years old.`); }); ``` I understand that `data` could be `undefined` if the document doesn't exist. But how do I handle this properly? I tried simply checking `if (data)`, but the error still appears on the lines where I access the properties. Maybe there's a more elegant way?