Request#url now includes the URL fragment, as per the spec. Before Chrome 59, the fragment was stripped out. This means service workers can see the URL fragment in the 'fetch' event handler.
Docs: https://developer.mozilla.org/en-US/docs/Web/API/Request/url https://github.com/w3c/ServiceWorker/issues/854 https://github.com/whatwg/fetch/issues/214