nodejs upload image to bucket and give it 'shared publicity' property

Question

Got some question related to uploading image and sharing it. I found related question with answer, but it does now work. Google cloud responds with this error

NodeJS gcloud - Upload to google storage with public-read property/custom cache-expire

   { [Error: Required]
     errors: [ { domain: 'global', reason: 'required', message:    'Required' } ],
   code: 400,
  message: 'Required',
   response: undefined }

Ideally i want to upload a file, and then access it though public domain. I don't want to have any streaming solutions, as in like opening file through api.

    // bucket is defined, uploading is fine
    var file = bucket.file(id);
    stream.pipe(file.createWriteStream());

    //Giving permissions
    bucket.acl.default.add({
        scope: "allUsers",
        role: gcloud.storage.acl.READER_ROLE
    }, function(err) {
        console.log(err);
       // i am getting an error there
    })

Thanks!