Follow instructions here https://firebase.google.com/docs/auth/ios/facebook-login
Code taken from different resources online to get FB data pulling to work.
Podfile looks like this
# platform :ios, '9.0'
target 'Facebook Login' do
# Comment the next line if you're not using Swift and don't want to use dynamic frameworks
use_frameworks!
# Pods for Facebook Login
pod 'Firebase/Core'
pod 'Firebase/Auth'
# Pods for Facebook
pod 'Bolts'
pod 'FBSDKCoreKit'
pod 'FBSDKLoginKit'
target 'Facebook LoginTests' do
inherit! :search_paths
# Pods for testing
end
target 'Facebook LoginUITests' do
inherit! :search_paths
# Pods for testing
end
end