Function setupOffscreenDocument

src/service_worker.ts:29–61

()

}

async function setupOffscreenDocument() {
  if (typeof chrome.offscreen?.createDocument !== "function") {
    // Firefox does not support offscreen
    console.error("Your browser does not support chrome.offscreen.createDocument");
    return;
  }
  //if we do not have a document, we are already setup and can skip
  if (!(await hasDocument())) {
    // create offscreen document
    if (!creating) {
      const promise = chrome.offscreen
        .createDocument({
          url: OFFSCREEN_DOCUMENT_PATH,
          reasons: [
            chrome.offscreen.Reason.BLOBS,
            chrome.offscreen.Reason.CLIPBOARD,
            chrome.offscreen.Reason.DOM_SCRAPING,
            chrome.offscreen.Reason.LOCAL_STORAGE,
          ],
          justification: "offscreen page",
        })
        .then(() => {
          if (creating !== promise) {
            console.log("setupOffscreenDocument() calling is invalid.");
            return;
          }
          creating = true; // chrome.offscreen.createDocument 只执行一次
        });
      creating = promise;
    }
    await creating;
  }
}

function main() {
  cleanInvalidKeys();