How to use the qrcode.toFile function in qrcode

exports.run = async (client, message, args) => { // eslint-disable-line no-unused-vars
  const qrOutput = tempy.file({ extension: "png" });
  message.channel.startTyping();
  if (args.length > 0) {
    qrcode.toFile(qrOutput, args.join(" "), { margin: 1 }, (error) => {
      if (error) throw new Error(error);
      message.channel.stopTyping();
      message.channel.send({
        files: [{
          attachment: qrOutput,
          name: "qr.png"
        }]
      });
    });
  } else {
    message.channel.stopTyping();
    message.reply("you need to provide some text to generate a QR code!");
  }
};

if (authToken.ip === process.argv[2]) {
				createToken = false;
			}
		} catch(e) {
			createToken = true;
		}
		if (createToken) {
			const token = crypto.randomBytes(24).toString('base64');
			const auth = {
				ip: process.argv[2],
				ipExternal: process.argv[3],
				token: token
			};
			const auth_str = JSON.stringify(auth);

			proms.push(QRCode.toFile('certs/qrcode.png', auth_str, {}));

			proms.push(new Promise((resolve, reject) => {
				fs.writeFile('certs/container-mananager-auth.json', auth_str, function (err) {
					if (err) reject(err);
					else resolve();
				});
			}));
		}

		return Promise.all(proms);
	})
	.then(() => {

.then((address) => {
      debug("going to show following address \n", address)
      const tmpfile = path.join('/tmp', address + ".png")
      QRCode.toFile(tmpfile, address, (err) => {
        if (err) throw err;

        bot.api.files.upload({
          file: fs.createReadStream(tmpfile),
          filename: "please_pay_to_this_address" + ".png",
          title: address + ".png",
          initial_comment: locale_message.deposit.file_comment,
          channels: message.channel
        }, (err, res) => {
          if (err) bot.reply(err)
          debug("result is ", res);
        })

        bot.reply(message, locale_message.deposit.msg_with_qrcode)
        bot.reply(message, address)
      })

const saveQrcode2Local = string => {
  const filename = `arya-qrcode-${getDate()}.png`
  qrcode.toFile(
    filename,
    string,
    {
      width: 300,
      height: 300,
      color: {
        dark: '#000000ff',
        light: '#0000'
      }
    },
    err => {
      if (err) throw err
      print(`success`, '✓ Okay, Has successfully generate & save your qrcode.')
    }
  )
}