speech to text macOS swift playground

I am trying to get speech to text working on my mac in swift. I found a few articles but they are all for iOS. I'm trying to follow this one: http://www.appcoda.com/siri-speech-framework/

So far this is my code in Playground:

//: Playground - noun: a place where people can play

import Cocoa
import PlaygroundSupport
PlaygroundPage.current.needsIndefiniteExecution = true
import Speech

while true {
    microphoneButton.isEnabled = false  //2

    speechRecognizer.delegate = self  //3

    SFSpeechRecognizer.requestAuthorization { (authStatus) in  //4

        var isButtonEnabled = false

        switch authStatus {  //5
        case .authorized:
            isButtonEnabled = true

        case .denied:
            isButtonEnabled = false
            print("User denied access to speech recognition")

        case .restricted:
            isButtonEnabled = false
            print("Speech recognition restricted on this device")

        case .notDetermined:
            isButtonEnabled = false
            print("Speech recognition not yet authorized")
        }

        OperationQueue.main.addOperation() {
            self.microphoneButton.isEnabled = isButtonEnabled
        }
    }
}

It comes up with the error, "No such Module Speech"

My questions are, is it possible in macOS? Is it possible in playgrounds?

Thanks in advance, Jersh

It seems like the Speech library is only available on iOS, so you're out of luck with SFSpeechRecognizer. NSSpeechRecognizer could be an alternative but requires you to give a list of words for it to recognize from (rather than recognizing from any arbitrary word).