worker.js (1215B)
1 addEventListener("install", function (evt) { 2 evt.waitUntil(self.skipWaiting()); 3 }); 4 5 addEventListener("activate", function (evt) { 6 // We claim the current clients in order to ensure that we have an 7 // active client when we call unregister in the fetch handler. Otherwise 8 // the unregister() can kill the current worker before returning a 9 // response. 10 evt.waitUntil(clients.claim()); 11 }); 12 13 addEventListener("fetch", function (evt) { 14 // This worker may live long enough to receive a fetch event from the next 15 // test. Just pass such requests through to the network. 16 if (!evt.request.url.includes("fake_download")) { 17 return; 18 } 19 20 // We should only get a single download fetch event. Automatically unregister. 21 evt.respondWith( 22 registration.unregister().then(function () { 23 return new Response("service worker generated download", { 24 headers: { 25 "Content-Disposition": 'attachment; filename="fake_download.bin"', 26 // Prevent the default text editor from being launched 27 "Content-Type": "application/octet-stream", 28 // fake encoding header that should have no effect 29 "Content-Encoding": "gzip", 30 }, 31 }); 32 }) 33 ); 34 });