send photo to telegram JS

gistfile1.txt

let request = require('request');
let fs = require('fs');
let FormData = require('form-data');

let tokken = '828922035:AAGr4ZF1yoISDiKOFt_rBHi1k6q8Cz-uuHk';
let chatId = -1001320778442;
let url = 'https://api.telegram.org/bot' + tokken + '/sendPhoto';

var formData = {
  chat_id: chatId,
  photo: fs.createReadStream(__dirname + '/alert_images/photo_2019-07-23_17-12-31.jpg'),
};
request.post({url:url, formData: formData}, function optionalCallback(err, httpResponse, body) {
  if (err) {
    return console.error('upload failed:', err);
  }
  console.log('Upload successful!  Server responded with:', body);
});