Function fromInnerResponse

deps/undici/src/lib/web/fetch/response.js:551–570

* @see https://fetch.spec.whatwg.org/#response-create * @param {any} innerResponse * @param {'request' | 'immutable' | 'request-no-cors' | 'response' | 'none'} guard * @returns {Response}

(innerResponse, guard)

 * @returns {Response}
 */
function fromInnerResponse (innerResponse, guard) {
  const response = new Response(kConstruct)
  setResponseState(response, innerResponse)
  const headers = new Headers(kConstruct)
  setResponseHeaders(response, headers)
  setHeadersList(headers, innerResponse.headersList)
  setHeadersGuard(headers, guard)

  // Note: If innerResponse's urlList contains a URL, it is a fetch response.
  if (innerResponse.urlList.length !== 0 && innerResponse.body?.stream) {
    // If the target (response) is reclaimed, the cleanup callback may be called at some point with
    // the held value provided for it (innerResponse.body.stream). The held value can be any value:
    // a primitive or an object, even undefined. If the held value is an object, the registry keeps
    // a strong reference to it (so it can pass it to the cleanup callback later). Reworded from
    // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/FinalizationRegistry
    streamRegistry.register(response, new WeakRef(innerResponse.body.stream))
  }

  return response
}

// https://fetch.spec.whatwg.org/#typedefdef-xmlhttprequestbodyinit
webidl.converters.XMLHttpRequestBodyInit = function (V, prefix, name) {