小编Jul*_*hez的帖子

我不断在控制台日志中收到此错误

未捕获（承诺中）类型错误：无法在“ServiceWorkerGlobalScope”上执行“获取”：无法使用已使用的请求对象构造请求。

我尝试更改我的 Service Worker 但不起作用

self.addEventListener('install', (event) => event.waitUntil(preLoad()));

const preLoad = function () {
  return caches.open('cc-offline').then((cache) => {
    return cache.addAll(['/offline.html', '/index.html']);
  });
}

self.addEventListener('fetch', (event) => {
  event.respondWith(checkResponse(event.request).catch(function () {
    return returnFromCache(event.request)
  }));
  event.waitUntil(addToCache(event.request));
});

const checkResponse = (request) => {
  return new Promise((fulfill, reject) => {
    fetch(request).then((response) => {
      (response.status !== 404) ? fulfill(response) : reject()
    }, reject)
  });
};

const addToCache = (request) => {
  return caches.open('cc-offline').then((cache) => {
    return fetch(request).then((response) => {
      return cache.put(request, response); …