Using PhoneNumberKit to... format phone numbers

PhoneNumberFormatter.swift

import Foundation
import Cocoa
import PhoneNumberKit

@objc
class PhoneNumberFormatter: Formatter {
    static private let phoneNumberKit = PhoneNumberKit()
    static private let partialPhoneNumberFormatter = PartialFormatter()
    
    public var enabled = true
    
    override func string(for obj: Any?) -> String? {
        guard let str = obj as? String else { return nil }
        
        if(enabled){
            guard let phoneNumber = try? PhoneNumberFormatter.phoneNumberKit.parse(str) else {
                return nil
            }
            return PhoneNumberFormatter.phoneNumberKit.format(phoneNumber, toType: .international)
        } else {
            return str
        }
    }
    
    override func getObjectValue(_ obj: AutoreleasingUnsafeMutablePointer<AnyObject?>?, for string: String, errorDescription errorStr: AutoreleasingUnsafeMutablePointer<NSString?>?) -> Bool {
        
        if(enabled){
            do {
                let phoneNumber = try PhoneNumberFormatter.phoneNumberKit.parse(string)
                obj?.pointee = PhoneNumberFormatter.phoneNumberKit.format(phoneNumber, toType: .e164) as AnyObject
                
                return true
            } catch {
                errorStr?.pointee = error.localizedDescription as NSString
                return false
            }
        } else {
            obj?.pointee = string as AnyObject
            return true
        }
    }
    
    override func isPartialStringValid(_ partialString: String, newEditingString newString: AutoreleasingUnsafeMutablePointer<NSString?>?, errorDescription error: AutoreleasingUnsafeMutablePointer<NSString?>?) -> Bool {
        if(enabled){
            let formatted = PhoneNumberFormatter.partialPhoneNumberFormatter.formatPartial(partialString)
        
            newString?.pointee = formatted as NSString
            
            return partialString == formatted
        } else {
            return true
        }
    }
}