fix: compatible with cache api

package.json

@@ -1,6 +1,6 @@
 {
  "name": "@openim/wasm-client-sdk",
- "version": "3.8.1",
+ "version": "3.8.2-beta.0",
  "description": "open im sdk for web",
  "source": "src/index.ts",
  "main": "lib/index.js",

src/sdk/initialize.ts

@@ -51,28 +51,27 @@ export function getGoExitPromise() {
 }
 
 async function fetchWithCache(url: string): Promise<Response> {
- if (!('caches' in window)) {
- return fetch(url);
- }
-
- const cache = await caches.open(CACHE_KEY);
- const cachedResponse = await cache.match(url);
- const isResourceUpdated = async () => {
- const serverResponse = await fetch(url, { method: 'HEAD' });
- const etag = serverResponse.headers.get('ETag');
- const lastModified = serverResponse.headers.get('Last-Modified');
- return (
- serverResponse.ok &&
-  (etag !== cachedResponse?.headers.get('ETag') ||
-  lastModified !== cachedResponse?.headers.get('Last-Modified'))
- );
- };
+ try {
+ const cache = await caches.open(CACHE_KEY);
+  const cachedResponse = await cache.match(url);
+ const isResourceUpdated = async () => {
+  const serverResponse = await fetch(url, { method: 'HEAD' });
+  const etag = serverResponse.headers.get('ETag');
+  const lastModified = serverResponse.headers.get('Last-Modified');
+  return (
+  serverResponse.ok &&
+  (etag !== cachedResponse?.headers.get('ETag') ||
+  lastModified !== cachedResponse?.headers.get('Last-Modified'))
+ );
+ };
+ if (cachedResponse && !(await isResourceUpdated())) {
+  return cachedResponse;
+  }
 
- if (cachedResponse && !(await isResourceUpdated())) {
- return cachedResponse;
+ return fetchAndUpdateCache(url, cache);
+ } catch (error) {
+ return fetch(url);
  }
-
- return fetchAndUpdateCache(url, cache);
 }
 
 async function fetchAndUpdateCache(