request-image.js

// first run npm install -g request

function requestFile(url, callback) {
  return require('request').get(url, callback);
}

let url = 'https://www.google.com.br/images/branding/googlelogo/2x/googlelogo_color_272x92dp.png';

// stream test
requestFile(url).pipe(require('fs').createWriteStream('image-stream.png'));

// buffer test
requestFile(url, (error, response, body) => {
  require('fs').writeFileSync('image-sync.png', body);
});