browser-cache-mock

import CacheMock from 'browser-cache-mock'; const cacheMock = new CacheMock(); // Mock the global caches object if (typeof globalThis.caches === 'undefined') { (globalThis as any).caches = { open: async (cacheName: string) => cacheMock, ...cacheMock }; } // Example: put a response in cache async function testCacheBehavior() { const cache = await caches.open('my-cache'); const request = new Request('https://example.com/data'); const response = new Response('hello world'); await cache.put(request, response); const cached = await cache.match(request); const text = await cached!.text(); console.log(text); // 'hello world' } testCacheBehavior();