class js.html.SpeechSynthesisUtterance extends EventTarget

var lang:String

var onboundary:Function

var onend:Function

var onerror:Function

var onmark:Function

var onpause:Function

var onresume:Function

var onstart:Function

var pitch:Float

var rate:Float

var text:String

var voice:SpeechSynthesisVoice

var volume:Float

function new(text:String):Void

function new():Void