twitterLigin.js

twitterLogin = async () => {
    try {
      await RNTwitterSignIn.init(TwitterKeys.TWITTER_CONSUMER_KEY, TwitterKeys.TWITTER_CONSUMER_SECRET);

      // also includes: name, userID & userName
      const { authToken, authTokenSecret } = await RNTwitterSignIn.logIn();

      const credential = TwitterAuthProvider.credential(authToken, authTokenSecret);

      const firebaseUserCredential = await firebase.auth().signInWithCredential(credential);
      if (firebaseUserCredential) {
        this.setState({
          isLoggedIn: true
        })
      }
      console.warn(JSON.stringify(firebaseUserCredential.user.toJSON()));
    } catch (e) {
      console.error(e);
    }
  }