@cloudflare/vite-plugin does not deliver `OPTIONS` method requests to worker when running via vite dev server

[aroman]

Which Cloudflare product(s) does this pertain to?

Vite Plugin

What versions & operating system are you using?

4.10.0

Please provide a link to a minimal reproduction

No response

Describe the Bug

my worker sets CORS preflight headers, but these are not respected by vite - I needed to configure server.cors options to my vite.config.ts to get this to work.

It seems like vite is intercepting OPTIONS requests rather than delivering them to the worker, so the worker isn't able to respond to them

Please provide any relevant error logs

No response

[0xbad0c0d3]

#9121 Must fix the issue

[jamesopstad]

Vite enables CORS by default - https://vite.dev/config/server-options.html#server-cors. If you would instead like to handle OPTIONS requests in your Worker then you should disable CORS by setting server: { cors: false } in your Vite config.