caching - Service worker: check cached resources are up-to-date or latest - Stack Overflow
You have two options: Switch from your current cache-first strategy in your fetch handler to a strategy like stale-while-revalidate. Use a build-time tool to generate a service worker that changes each time one of your local resources changes, which will trigger the install and activate handlers, giving them a chance to update your users' caches with the latest copies of your assets. These tools work by generating hashes of each local file and inlining those hashes into the generated service worker script.
