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