Re: [fetch] RFC: a mechanism to bypass CORS preflight (#210)

I see it a little different. When you install a foreign fetch service worker, you have essentially opted into CORS and therefore CORS preflights are no longer needed (and won't be made for URLs that have an associated foreign fetch service worker). However, the service worker is needed, which makes it somewhat heavyweight.

I think it would be okay to still consider alternatives that do not require service workers, though I don't think we'd be in a rush to ship them.

---
Reply to this email directly or view it on GitHub:
https://github.com/whatwg/fetch/issues/210#issuecomment-176496123