hi I was playing around with porting

const contentTypeIsJson = (headers: Headers): boolean => pipe(
  headers.get(CONTENT_TYPE_RESPONSE_HEADER),
  O.fromNullable,
  O.map(flow(ContentTypeHelpers.parse, (result) => result.type)),
  O.exists((type) => type === CONTENT_TYPE_JSON),
)
const statusCodeIs40x = (status: number): boolean =>
  status >= 400 && status <= 451
const statusCodeIs50x = (status: number): boolean =>
  status >= 500 && status <= 511

const matchResponse = pipe(
  Match.type<Response>(),
  Match.when({ status: statusCodeIs40x  }, (r) => Z.fail(new HttpClientError(r.status))),
  Match.when({ status: statusCodeIs50x  }, (r) => Z.fail(new HttpServerError(r.status))),
  Match.when({ headers: contentTypeIsJson }, (r) => Z.tryCatchPromise(
    () => r.json() as Promise<Json>,
    (error) =>
      new JsonParseError(
        error instanceof Error ? error.message : 'Unknown error.',
      ),
  )),
  Match.orElse(() => Z.fail(new NotJson))
)