what is wrong with my code?

Question

When I try to run the code it shows missing ' ) ' after argument list?

var msg = SpeechSynthesisUtterance (utterance: ' Hello world ' string: SpeechSynthesisUtterance)
window.speechSynthesis.speak(msg)
console.log(msg) {
alert("bug detected")
}

Answer 1

" "

Answer 2

There's meant to be a bracket around hello world

Answer 3

And ""

Answer 4

thanks