Merge branch 'patch-1' of https://github.com/thgh/sapper-template into thgh-patch-1

app/service-worker.js

@@ -64,6 +64,9 @@ self.addEventListener('fetch', event => {
 			.open(`offline${timestamp}`)
 			.then(async cache => {
 				try {
+					if (event.request.cache === 'only-if-cache') {
+						event.request.mode = 'same-origin'
+					}
 					const response = await fetch(event.request);
 					cache.put(event.request, response.clone());
 					return response;