Document the Headers class

[cloudflare]

Document the Headers class

[Apro123]

I cannot even get the request headers. It either ends up empty or undefined.
These are the guides I followed, but nothing I did worked.
https://community.cloudflare.com/t/request-headers-comes-as-an-empty-object/181787
https://developers.cloudflare.com/workers/examples/logging-headers

[davidtsong]

Related I think to this issue from the archived docs cloudflare/workers-docs#954

[davidtsong]

@Apro123 the example code seems to be working

[Apro123]

interesting. I have been passing the request object from method to method, so maybe the headers get stripped somewhere, although that might be impossible. I will have to investigate the issue. Thanks @davidtsong

[PierBover]

The example here seems to be broken:

console.log(new Map(request.headers))

// returns

"{unknown map}"