Convert objc NSDictionary to swift dictionary

NSDictionaryExtension.swift

extension NSDictionary {
  
  var swiftDictionary: [String : AnyObject] {
    var swiftDictionary: [String : AnyObject] = [:]
    let keys = self.allKeys.flatMap { $0 as? String }
    for key in keys {
      let keyValue = self.value(forKey: key) as AnyObject
      swiftDictionary[key] = keyValue
    }
    return swiftDictionary
  }
}


//in code
let d = NSDictionary()
d.swiftDictionary

let swiftDict = dict as? [String: Any]

@pilot34 I need objects instead of Any type and it always returns non Optional type