AbortableFetch file cant build using google closure compiler

[nomean42]

if (
    !polyfillNeeded({
      fetch,
      Request: NativeRequest,
      AbortController: NativeAbortController,
      __FORCE_INSTALL_ABORTCONTROLLER_POLYFILL,
    })
  ) {
    return { fetch, Request };
  }

  let Request = NativeRequest;