in auth/facebook.js [118:130]
function isUserEqual(facebookAuthResponse, firebaseUser) {
if (firebaseUser) {
var providerData = firebaseUser.providerData;
for (var i = 0; i < providerData.length; i++) {
if (providerData[i].providerId === firebase.auth.FacebookAuthProvider.PROVIDER_ID &&
providerData[i].uid === facebookAuthResponse.userID) {
// We don't need to re-auth the Firebase connection.
return true;
}
}
}
return false;
}