Как читать stream+json ответы из Vuejs?

let es = new EventSource('http://localhost:8081/pets');
es.addEventListener('message', event => {
    let data = JSON.parse(event.data);
    this.pets.push(data);
}, false);

axios({
  method:'get',
  url:'http://bit.ly/2mTM3nY',
  responseType:'stream'
})
  .then(function (response) {
    response.data.pipe(fs.createWriteStream('ada_lovelace.jpg'))
  });