在使用firestore权限的本机应用程序（通过Expo）中，request.auth始终为null

Here's my code:

这是我的代码：

firebase.auth().onAuthStateChanged((user) => {
    if (user) {
        console.log("We are authenticated now!");
        firebase.firestore().collection("users")
            .doc(firebase.auth().currentUser.uid).set({ name: "new name" });
    } else {
        loginWithFacebook();
    }
});
firebase.auth().onA