Function fetchFinale

deps/undici/src/lib/web/fetch/index.js:1023–1146

(fetchParams, response)

// https://fetch.spec.whatwg.org/#fetch-finale
function fetchFinale (fetchParams, response) {
  // 1. Let timingInfo be fetchParams’s timing info.
  let timingInfo = fetchParams.timingInfo

  // 2. If response is not a network error and fetchParams’s request’s client is a secure context,
  //    then set timingInfo’s server-timing headers to the result of getting, decoding, and splitting
  //    `Server-Timing` from response’s internal response’s header list.
  // TODO

  // 3. Let processResponseEndOfBody be the following steps:
  const processResponseEndOfBody = () => {
    // 1. Let unsafeEndTime be the unsafe shared current time.
    const unsafeEndTime = Date.now() // ?

    // 2. If fetchParams’s request’s destination is "document", then set fetchParams’s controller’s
    //    full timing info to fetchParams’s timing info.
    if (fetchParams.request.destination === 'document') {
      fetchParams.controller.fullTimingInfo = timingInfo
    }

    // 3. Set fetchParams’s controller’s report timing steps to the following steps given a global object global:
    fetchParams.controller.reportTimingSteps = () => {
      // 1. If fetchParams’s request’s URL’s scheme is not an HTTP(S) scheme, then return.
      if (!urlIsHttpHttpsScheme(fetchParams.request.url)) {
        return
      }

      // 2. Set timingInfo’s end time to the relative high resolution time given unsafeEndTime and global.
      timingInfo.endTime = unsafeEndTime

      // 3. Let cacheState be response’s cache state.
      let cacheState = response.cacheState

      // 4. Let bodyInfo be response’s body info.
      const bodyInfo = response.bodyInfo

      // 5. If response’s timing allow passed flag is not set, then set timingInfo to the result of creating an
      //    opaque timing info for timingInfo and set cacheState to the empty string.
      if (!response.timingAllowPassed) {
        timingInfo = createOpaqueTimingInfo(timingInfo)

        cacheState = ''
      }

      // 6. Let responseStatus be 0.
      let responseStatus = 0

      // 7. If fetchParams’s request’s mode is not "navigate" or response’s has-cross-origin-redirects is false:
      if (fetchParams.request.mode !== 'navigate' || !response.hasCrossOriginRedirects) {
        // 1. Set responseStatus to response’s status.
        responseStatus = response.status

        // 2. Let mimeType be the result of extracting a MIME type from response’s header list.
        const mimeType = extractMimeType(response.headersList)

        // 3. If mimeType is not failure, then set bodyInfo’s content type to the result of minimizing a supported MIME type given mimeType.
        if (mimeType !== 'failure') {
          bodyInfo.contentType = minimizeSupportedMimeType(mimeType)