App Check for Expo/React Native app using Firebase JS SDK

Question

My Expo based React Native app worked perfectly fine until I added Firebase App Check.

I am using Firebase JS SDK and not React Native Firebase because it is suggested here for cross platform development.

Now how can I get and then send context.auth (link) to Firebase Functions? Or How can I send what Firebase Storage needs to functions manually?

Storage seems to work fine with AppCheck and AppAttest enabled if it's not Enforced but as soon as I enforce it, the app throws a an error every time there is image load from storage that User is not authenticated.

https://console.firebase.google.com/u/0/project/myapp-4fa75/settings/appcheck

@vana22 I was not. I realized App check is meant for native apps only. — Umair A., May 08 '23 at 16:15
did you then use another App attestation method/provider? Or did you completely not use anything for securing your app? — vana22, May 11 '23 at 12:22

score 2 · Answer 1 · answered Jan 27 '22 at 13:47

As I understand, you can't because the JS SDK uses reCAPTCHA and native apps have to use either SafetyNet (Android) or DeviceCheck or App Attest (iOS).

I think the only option is using react-native-firebase instead of JS SDK.

You'd have to use config plugins as described here and then configure the app-check module as described here.

App Check for Expo/React Native app using Firebase JS SDK

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