if(initializeApp(firebaseConfig) !== null){

   const app = initializeApp(firebaseConfig);

   const auth = initializeAuth(app, {

        persistence: getReactNativePersistence(ReactNativeAsyncStorage)

    })

}

​

​

Then in your aunthentication.js file try the following:

 const app = initializeApp(firebaseConfig)

 const authy = getAuth(app);

 signInWithEmailAndPassword(authy, email, password);

// Connect to the Azure Redis cache

ConfigurationOptions config = new ConfigurationOptions();

config.EndPoints.Add("<your DNS name>.redis.cache.windows.net");

config.Password = "<Redis cache key from management portal>";

ConnectionMultiplexer redisHostConnection = ConnectionMultiplexer.Connect(config);

IDatabase cache = redisHostConnection.GetDatabase();

...

private async Task<string> RetrieveItem(string itemKey)

{

    // Attempt to retrieve the item from the Redis cache

    string itemValue = await cache.StringGetAsync(itemKey);

​

    // If the value returned is null, the item was not found in the cache

    // So retrieve the item from the data source and add it to the cache

    if (itemValue == null)

    {

        itemValue = await GetItemFromDataSourceAsync(itemKey);

        await cache.StringSetAsync(itemKey, itemValue);

    }

​

    // Return the item

    return itemValue;

}