If a site is on domain https://abc.com and wants to run a web worker located at https://xyz.com/dist/worker.js, it won't work.

Cross-origin web workers are not allowed.

So what can be done to get a worker at xyz.com run on abc.com?

Say no more.

$ npm i co-web-worker

import CrossOriginWorker from 'co-web-worker';

console.log(window.location.origin);
// > https://abc.com

const worker = new CrossOriginWorker('https://xyz.com/dist/worker.js');

console.log(worker instanceof Worker);
// > true

Licensed under MIT license. See LICENSE at root of this repo for more information.