How to get the authorization code on react native for the Facebook strategy

[JackShannon]

I'm sorry, I know that this is not really directly related to assent.

The Facebook strategy requires an authorization code for the callback.

In this issue you say that "The Facebook strategy docs now highlights how to fetch the code client side to submit server side".

#34 (comment)

Our problem is that we are using https://github.com/facebook/react-native-fbsdk to implement the frontend facebook auth in react native. So we I don't think we can use the JS sdk to get the signed request and get the authorization code.

Please could you point me in the right direction on how to get the code from the accessToken in this situation?