[dfcz112]

var request = require('request');
var fs = require('fs');

var formData = {
  'uploadfile': fs.createReadStream('file_ws.jpg'),
  'ef-set': 10,
  'ef-set-2': 10,
  'jpeg-quality': 100
};

request.post({url:'https://www.imgonline.com.ua/grid-square-result.php', formData: formData}, function (err, resp, body) {
  if (err) {
    return console.error(err);
  }
  console.log(resp.statusCode + '\n');
  console.log('body: ', body);
});

так всё падает с ошибкой C:\nodejs\node_modules\form-data\lib\form_data.js:226
} else if (options.filename || value.name || value.path) {
^

TypeError: Cannot read property 'name' of null
at FormData._getContentDisposition (C:\nodejs\node_modules\form-data\lib\form_data.js:226:40)