Prin pretty JSON from Data

Data+JSON.swift

extension Data {
  
  // NSString gives a nice sanitized debugDescription
  var prettyPrintedJSONString: NSString? {
    guard let object = try? JSONSerialization.jsonObject(with: self, options: []) else {
      print("Cannot serialize JSON object.")
      return nil
    }
    
    guard let data = try? JSONSerialization.data(withJSONObject: object, options: [.prettyPrinted]) else {
      print("Cannot serialize data object.")
      return nil
    }
      
    guard let prettyPrintedString = NSString(data: data, encoding: String.Encoding.utf8.rawValue) else {
      print("Cannot get pretty string object.")
      return nil
    }
    
    return prettyPrintedString
  }
}