How to pass parameter into function in React?

I would like to pass a parameter from a main function to a sub function as below.
But it’s does not work.

const Editor = ({postTitle}) {
  const title = {postTitle}
  console.log(title) //this is working
  const subFunc = (title) => {
    console.log(title) //it's not working. how can I bring title into this?
  }
  return (
    <div></div>
  )
}