error when sending a email on v3 - TypeError: Expected signal to be an instanceof AbortSignal

Error when sending email with mailgun: TypeError: Expected signal to be an instanceof AbortSignal
at new Request (app/node_modules/node-fetch/lib/index.js:1222:10)
at new v (app/node_modules/mailgun.js/dist/mailgun.js:2:30777)
at Object.t [as default] (app/node_modules/mailgun.js/dist/mailgun.js:2:34628)
at e.<anonymous> (app/node_modules/mailgun.js/dist/mailgun.js:2:11808)
at app/node_modules/mailgun.js/dist/mailgun.js:2:10637
at Object.next (app/node_modules/mailgun.js/dist/mailgun.js:2:10742)
at app/node_modules/mailgun.js/dist/mailgun.js:2:9654
at new Promise (<anonymous>)
at o (app/node_modules/mailgun.js/dist/mailgun.js:2:9399)
at e.request (app/node_modules/mailgun.js/dist/mailgun.js:2:11368)
at e.command (app/node_modules/mailgun.js/dist/mailgun.js:2:12652)
at e.postMulti (app/node_modules/mailgun.js/dist/mailgun.js:2:13422)
at e.create (app/node_modules/mailgun.js/dist/mailgun.js:2:8669)

import Mailgun from 'mailgun.js';
import formData from 'form-data';

const mailgun = new Mailgun(formData);

  const mg = mailgun.client({
    username: 'api',
    key: config.MAILGUN.MAILGUN_API_KEY,
  });

return await mg.messages.create(domain, message);

this is using node with webpack

[jozsefsallai]

@darrylyoung @ssijak Node.js doesn’t have AbortController by default, and when the request library used by mailgun.js (ky-universal) sees that, it tries to polyfill it using abort-controller. This module will NOT work in a Node.js environment, so we have to polyfill it ourselves using node-abort-controller.

First install the module:

npm install node-abort-controller

Then import and polyfill AbortController before importing mailgun.js, so ky-universal will see it in the global context and won’t try to override it:

import AbortController from 'node-abort-controller';
global.AbortController = AbortController;

import Mailgun from 'mailgun.js';
import formData from 'form-data';

const mailgun = new Mailgun(formData);

const mg = mailgun.client({
  username: 'api',
  domain: process.env.DOMAIN,
  key: process.env.MAILGUN_API_KEY,
  url: 'https://api.eu.mailgun.net',
});

To me, this feels like an upstream compatibility issue with ky-universal, rather than a bug in mailgun.js, but they might want to mention this in their docs until the maintainers of ky-universal do something about it.

[mustafaKamal-fe]

I hope one day ppl at Mailgun hire some one for writting better technical documentation