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Auto-complete on request headers is really awesome, but it seems it will break type-compatibility with Request/Headers, requiring manual type casting from users.

Currently, both ServerRequest and TypedServerRequest are type-compatible with Request. This allows natively using any web-standard typed util with h3 event.

import { type EventHandler, defineHandler } from "h3";

function webUtil(req: Request) {}
function webUtil2(headers: Headers) {}

defineHandler((event) => {
  // Both will fail 
  webUtil(event.req);
  webUtil2(event.req.headers);
});


const event: H3Event
webUtil(event.req);
webUtil2(event.req.headers);

It looks incompatibility comes from header values, can we limit it to keys to allow both auto-complete for keys and also type compat with web types?

we can indeed - nice idea!