How to use the ansi-escapes.cursorSavePosition function in ansi-escapes

, render: function () {
		let prompt = [
			ui.symbol(this.done, this.aborted),
			this.msg,
			ui.delimiter(this.completing),
			this.done && this.suggestions[this.cursor]
				? this.suggestions[this.cursor].title
				: this.transform(this.input)
		].join(' ')

		if (!this.done) {
			prompt += esc.cursorSavePosition
			for (let i = 0; i < this.suggestions.length; i++) {
				const s = this.suggestions[i]
				prompt += '\n' + (i === this.cursor ? chalk.cyan(s.title) : s.title)
			}
			prompt += esc.cursorRestorePosition
		}

		this.out.write(ui.clear(this.lastRendered) + prompt)
		this.lastRendered = prompt
	}
}

var red = AnsiStyles.red;
var yellow = AnsiStyles.yellow;
var green = AnsiStyles.green;
var blue = AnsiStyles.blue;
var magenta = AnsiStyles.magenta;

var bgRed = AnsiStyles.bgRed;
var bgYellow = AnsiStyles.bgYellow;
var bgGreen = AnsiStyles.bgGreen;
var bgBlue = AnsiStyles.bgBlue;

var cursorUp = AnsiEscapes.cursorUp;
var cursorDown = AnsiEscapes.cursorDown;
var eraseEndLine = AnsiEscapes.eraseEndLine;
var cursorSavePosition = AnsiEscapes.cursorSavePosition;
var cursorRestorePosition = AnsiEscapes.cursorRestorePosition;

var width = 50;
var stdoutLineCount = 0;

var nyanTemplate = {
  ascii: [
    ' ,--------,     ',
    ' │▗▝ ▞ ▝ ˄---˄  ',
    '~│ ▞  ▞ ❬.◕‿‿◕.❭',
    ' `w-w---- w w   '
  ],
  colors: [
    ' ggggggggggg    ',
    ' gMMMMMMMggggg  ',
    'ggMMMMMMgwwwwwwg',

readline.emitKeypressEvents(rl.input);
  if (stdin.isTTY) stdin.setRawMode(true);

  const close = () => {
    rl.close();
    let result = session.renderResult();
    update.clear(1);

    if (options.onClose) {
      setImmediate(() => {
        options.onClose.call(session, colors.unstyle(result), session);
      });
    }
  };

  rl.write(escapes.cursorSavePosition);

  session.on('alert', () => {
    session.alert = false;
    rl.write('\u0007');
  });

  rl.on('SIGINT', close);
  rl.on('line', close);

  rl.input.on('keypress', (input, event) => {
    if (!session.focused) return;
    let action = keypress.action(input, event);
    let item = session.focused;
    let type = item.type;

    item.input = colors.unstyle(item.input || '');