Add format script to package.json and format with prettier.

static/sw.js

@@ -1,20 +1,20 @@
 importScripts(
-	"/scram/scramjet.codecs.js",
-	"/scram/scramjet.config.js",
-	"/scram/scramjet.shared.js",
-	"/scram/scramjet.worker.js"
+  "/scram/scramjet.codecs.js",
+  "/scram/scramjet.config.js",
+  "/scram/scramjet.shared.js",
+  "/scram/scramjet.worker.js",
 );
 
 const scramjet = new ScramjetServiceWorker();
 
 async function handleRequest(event) {
-	if (scramjet.route(event)) {
-		return scramjet.fetch(event);
-	}
+  if (scramjet.route(event)) {
+    return scramjet.fetch(event);
+  }
 
-	return fetch(event.request);
+  return fetch(event.request);
 }
 
 self.addEventListener("fetch", (event) => {
-	event.respondWith(handleRequest(event));
+  event.respondWith(handleRequest(event));
 });