INNER CODE UNIT · JavaScript

getItemFromCacheOrWeb

mozilla/firefox-translations · extension/controller/backgroundScript.js:746

const getItemFromCacheOrWeb = async (tabId, itemURL, fileSize, fileChecksum) => {
  let buffer = null;

  /*
   * there are two possible sources for the translation modules: the Cache
   * API or the network. We check for their existence in the
   * former, and if it's not there, we download from the network and
   * save it in the cache.
   */
  try {
      const cache = await caches.open(CACHE_NAME);
      let response = await cache.match(itemURL);
      if (!response) {

          /*
           * no match for this object was found in the cache.
           * we'll need to download it and inform the progress to the
           * sender UI so it could display it to the user

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