Function handler

packages/effect/test/unstable/http/HttpEffect.test.ts:139–142

(
        _request: HttpServerRequest.HttpServerRequest,
        response: HttpServerResponse.HttpServerResponse
      )

      const request = HttpServerRequest.fromWeb(new Request("http://localhost:3000/"))
      const modified = request.modify({ url: "/updated" })
      const handler = (
        _request: HttpServerRequest.HttpServerRequest,
        response: HttpServerResponse.HttpServerResponse
      ) => Effect.succeed(response)

      appendPreResponseHandlerUnsafe(request, handler)