SECURITY_ERR: DOM Exception 18 with Web Workers

Question

I was getting an error SECURITY_ERR: DOM Exception 18 when I deployed to my production server.

I narrowed it down to the Web Worker request.

Answer 1

This is due the deployment process pushing the worker script out to a cdn causing the worker to be on a different domain.

This was fixed by placing the worker on the local server as to avoid a cross domain request