To authenticate using Twitter, Firebase also requires API Key and API Secret from your Twitter app. Firebase will take care of the communication and return the user object.
This is a straightforward process if you have already gone through the Facebook integration. It's similar to Twitter.
Here are the instructions to set up your Twitter app:
Log in to your Twitter account.
Navigate to https://apps.twitter.com.
Click on the Create New App button:
Provide the application details. You can fill in anything for description and website as Twitter will not check for a test app. Let's name the app as
ionic_firebase_test. The most important field here is the Callback URL, as it must be in thehttps://auth.firebase.com/v2/<YOUR-FIREBASE>/auth/twitter/callbackformat. Since the Firebase app name isionicebook, the callback URL will be https://auth.firebase.com/v2/ionicebook/auth/twitter/callback, as shown in the following...