Value in append(field, value, options) is set to null

I am trying to associate a filename with a JSON object and post a multipart request. I don’t know why I am getting this error. Options is set and value is just a JSON string. Reproducible test program is included here.

node_modules\form-data\lib\form_data.js:226 } else if (options.filename || value.name || value.path) {
TypeError: Cannot read property ‘name’ of null

const request = require('request');
const FormData = require('form-data');

var options = {
  filename: 'test.json',
  contentType: 'application/json'
};

var json = {
  text: 'hello world'
};

var form = new FormData();
form.append('file', JSON.stringify(json), options);
console.log(JSON.stringify(form, null, 2));

var username = 'username',
    password = 'password',
    url = 'https://' + username + ':' + password + '@somewhere.com';

request.post({
    url: url,
    formData: form
  },
  function optionalCallback(err, httpResponse, body) {
    if (err) {
      return console.error('upload failed:', err);
    }
    console.log('Upload successful!  Server responded with:', body);
  }
);

[kittaakos]

What I meant is that’s not a ‘workaround’, that’s just the way to use it.

you don’t require(‘form-data’) in your code… you require(‘request’) which uses form-data internally.

Thank you for the clarification, @aacotroneo!

The example from form-data confused me.

[aacotroneo]

if it’s not clear… you don’t require(‘form-data’) in your code… you require(‘request’) which uses form-data internally… and you just pass an plain js object.