Service-worker.js 在更新 Service Worker 时保持内存变量

如何解决Service-worker.js 在更新 Service Worker 时保持内存变量

当 Service Worker 更新时，我一直在思考如何在 Service Worker 中传递保持内存变量。所以基本上我的 service worker 会跟踪应用的版本号以更新离线缓存。

有一部分很棘手，我将用户的访问令牌再次保存在服务工作者的内存中，这没有问题。主要问题是当我更新 Service Worker 中的代码（版本号，...）时，浏览器将从 Service Worker 安装“新版本”。 （并重新加载页面）但是新版本的 service worker 没有以前版本的内存变量。

（我省略了缓存更新，因为它很长..）

Service-worker.js :

    const LATEST_VERSION = 'v'+'0.1.alpha';
    // Global token variable in the service worker
    let token = '';

    self.addEventListener('activate',function(event) {
      //do all the cache thingis...
    });

    // These listeners will make the service worker immediately available for the page
    self.addEventListener('install',function(event) {
      console.log('install - triggered')
         event.waitUntil(
          caches.open('cache').then(function(cache) {
            return cache.addAll([
            "/img/no-internet.png"
             ]);
          })
         );
    });


    
    // Exposed "method" for saving the token
    self.addEventListener('message',function(event) {
        if (event.data && event.data.type === 'SET_TOKEN') {
            token = event.data.token;
            console.log("[SW] token set!");
        }
    })
    
    // Helper function to add the auth header if the oubound request matches the whitelists
    const addAuthHeader = function (event) {
        destURL = new URL(event.request.url);
            const modifiedHeaders = new Headers(event.request.headers);
            if (token) {
                modifiedHeaders.append('Authorization',token)
            }
            const authReq = new Request(event.request,{headers: modifiedHeaders,mode: 'cors' });
            event.respondWith((async () => fetch(authReq))());
        
    }
    
    // Intercept all fetch requests and add the auth header
    self.addEventListener('fetch',addAuthHeader);

registerServiceWorker.js

register(`service-worker.js`,{
        ready() {
            console.log(
                'App is being served from cache by a service worker.\n' +
                'For more details,...'
            )
        },registered() {
            console.log('Service worker has been registered.')
        },cached() {
            console.log('Content has been cached for offline use.')
        },updatefound() {
            console.log('New content is downloading.')
        },updated() {
            console.log('New content is available; Refresh...')
            setTimeout(() => {
                window.location.reload();
            },1000)
        },offline() {
            console.log('No internet connection found. App is running in offline mode.')
        },error(error) {
            console.error('Error during service worker registration:',error)
        }
    })

所以这一切都归结为：新的应用程序版本 -> 用户因为令牌丢失而注销。

有没有办法将令牌变量“移交”给新的 service-worker.js？

提前致谢。