website/playground/panels.js/InputPanel
export function InputPanel(props) {
  return (
    <CodeMirrorPanel
      lineNumbers={true}
      keyMap="sublime"
      autoCloseBrackets={true}
      matchBrackets={true}
      showCursorWhenSelecting={true}
      tabSize={4}
      rulerColor="#eeeeee"
      {...props}
    />
  );
}