How to get a CNContact phone number(s) as string in Swift?

Question

I am attempting to retrieve the names and phone number(s) of all contacts and put them into arrays with Swift in iOS. I have made it this far:

Answer 1

Keeping things simple:

let phoneNumbers: [String] = contact.phoneNumbers.compactMap { (phoneNumber: CNLabeledValue) in
    guard let number = phoneNumber.value.value(forKey: "digits") as? String else { return nil }
    return number
}