[Home](./index.md) > [@firebase/firestore](./firestore.md) > [lite](./firestore_lite.md) > [FirebaseFirestore](./firestore_lite.firebasefirestore.md) > [toJSON](./firestore_lite.firebasefirestore.tojson.md) ## FirebaseFirestore.toJSON() method Returns a JSON-serializable representation of this Firestore instance. Signature: ```typescript toJSON(): object; ``` Returns: object