[Home](./index.md) > [@firebase/auth](./auth.md) > [AuthCredential](./auth.authcredential.md) > [toJSON](./auth.authcredential.tojson.md) ## AuthCredential.toJSON() method Returns a JSON-serializable representation of this object. Signature: ```typescript toJSON(): object; ``` Returns: object a JSON-serializable representation of this object.