Add CORS

[jolo-dev]

Describe the change

Honestly, I have trouble understanding how CORS here works.

It would be nice if we could add it to the documentation.

URLs

No response

Additional information

• [x] Would you be willing to help?

[jolo-dev]

I did in the end for my router this:

router.use('/',
  defineEventHandler(async (event) => {
      const cors = handleCors(event, {
        origin: '*',
        preflight: {
          statusCode: 204,
        },
        methods: '*',
      });

      if (!cors) {
      // ..
      }
  })
)

[TheAlexLichter]

Definitely a good thing to document. Utils are listed but need info. PR welcome!

[jolo-dev]

@manniL I would do a PR but is that above correct what I did? :D

[TheAlexLichter]

@jolo-dev Seems right to me, yes 👍🏻 Would probably rename const cors to const didHandleCors and do if(didHandleCors) { return } ☺️

[kricsleo]

Should have been resolved in #747.