linkedin upload media

 var request = require('request');
 const MEDIA_URL = 'https://api.linkedin.com/media/upload'
  
  function postMedia(token, filename, mediaType, mediaData) {
    console.log(token)
    return new Promise((resolve, reject) => {
      var formData = {
        custom_file: {
          value: new Buffer(mediaData),
          options: {
            filename: filename,
            contentType: mediaType
          }
        }
      };
      request.post({url: MEDIA_URL, formData: formData}, function optionalCallback(err, httpResponse, body) {
        if (err) {
          return reject(err);
        }
        return resolve(body);
      }).auth(null, null, true, token);
    });
  }