Function hasDocument

src/service_worker.ts:20–27

()

let creating: Promise<void> | null | boolean = null;

async function hasDocument() {
  const offscreenUrl = chrome.runtime.getURL(OFFSCREEN_DOCUMENT_PATH);
  const existingContexts = await chrome.runtime.getContexts({
    contextTypes: [chrome.runtime.ContextType.OFFSCREEN_DOCUMENT],
    documentUrls: [offscreenUrl],
  });
  return existingContexts.length > 0;
}

async function setupOffscreenDocument() {
  if (typeof chrome.offscreen?.createDocument !== "function") {