[Home](./index.md) > [@firebase/firestore](./firestore.md) > [lite](./firestore_lite.md) > [QueryDocumentSnapshot](./firestore_lite.querydocumentsnapshot.md) > [data](./firestore_lite.querydocumentsnapshot.data.md) ## QueryDocumentSnapshot.data() method Retrieves all fields in the document as an `Object`. Signature: ```typescript /** @override */ data(): T; ``` Returns: T An `Object` containing all fields in the document.