i am trying to add a button to the end of props.text but using this code puts [object Object] to the end of the text instead of the "set lines" button

function UnchangedText(props) {
  const setLines = <button>Set Lines</button>;
  return (
    <div className={props.className}>
      <span></span>
      <pre>{
        props.text.includes("\\n") 
        ? props.text + setLines
        : props.text
      }</pre>
    </div>
  );
}