testing service worker

lib/preload.js

@@ -57,6 +57,11 @@
     };
   }
 
+  // Enable service workers
+  electron.webFrame.registerURLSchemeAsPrivileged('file');
+  electron.webFrame.registerURLSchemeAsSecure('file');
+  electron.webFrame.registerURLSchemeAsBypassingCSP('file');
+
   // hook into the internal require for a few features:
   //  - better error reporting on syntax errors and missing modules
   //  - require.main acts like node.js CLI

server.js

@@ -68,6 +68,8 @@ app.on('quit', function () {
 });
 
 app.on('ready', function () {
+  electron.protocol.registerServiceWorkerSchemes(['file:']);
+
   // Get starting HTML file
   var htmlFile = path.resolve(__dirname, 'lib', 'index.html');
   var customHtml = false; // if we should watch it as well

test/fixtures/service-worker.js

@@ -0,0 +1,16 @@
+// The SW will be shutdown when not in use to save memory,
+// be aware that any global state is likely to disappear
+console.log("SW startup");
+
+self.addEventListener('install', function(event) {
+  console.log("SW installed");
+});
+
+self.addEventListener('activate', function(event) {
+  console.log("SW activated");
+});
+
+self.addEventListener('fetch', function(event) {
+  console.log("Caught a fetch!");
+  event.respondWith(new Response("Hello world!"));
+});