1 files changed, 18 insertions, 0 deletions
diff --git a/static/service-worker/worker.js b/static/service-worker/worker.js
new file mode 100644
index 0000000..ad5a374
--- /dev/null
+++ b/static/service-worker/worker.js
@@ -0,0 +1,18 @@
+const putInCache = async (request, response) => {
+  const cache = await caches.open("v1");
+  await cache.put(request, response);
+};
+
+const cacheFirst = async (request, event) => {
+  const responseFromCache = await caches.match(request);
+  if (responseFromCache) {
+    return responseFromCache;
+  }
+  const responseFromNetwork = await fetch(request);
+  event.waitUntil(putInCache(request, responseFromNetwork.clone()));
+  return responseFromNetwork;
+};
+
+self.addEventListener("fetch", (event) => {
+  event.respondWith(cacheFirst(event.request, event));
+});