From 5ee53a98c6c3c09f9069be3851c92a590dfd4961 Mon Sep 17 00:00:00 2001
From: Nolan Lawson <nolan@nolanlawson.com>
Date: Fri, 7 Sep 2018 16:28:38 -0700
Subject: [PATCH 1/2] set service-worker max-age to 0

---
 src/middleware.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/middleware.ts b/src/middleware.ts
index bab65364f..20102ac0b 100644
--- a/src/middleware.ts
+++ b/src/middleware.ts
@@ -141,12 +141,12 @@ export default function middleware(opts: {
 
 		fs.existsSync(path.join(output, 'service-worker.js')) && serve({
 			pathname: '/service-worker.js',
-			cache_control: 'max-age=600'
+			cache_control: 'max-age=0'
 		}),
 
 		fs.existsSync(path.join(output, 'service-worker.js.map')) && serve({
 			pathname: '/service-worker.js.map',
-			cache_control: 'max-age=600'
+			cache_control: 'max-age=0'
 		}),
 
 		serve({

From cbb5e8755ba8955061b289afdca9c278ee4be694 Mon Sep 17 00:00:00 2001
From: Rich Harris <richard.a.harris@gmail.com>
Date: Sat, 8 Sep 2018 10:12:55 -0400
Subject: [PATCH 2/2] Use MDN recommendation for preventing SW caching

---
 src/middleware.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/middleware.ts b/src/middleware.ts
index 20102ac0b..755efb512 100644
--- a/src/middleware.ts
+++ b/src/middleware.ts
@@ -141,12 +141,12 @@ export default function middleware(opts: {
 
 		fs.existsSync(path.join(output, 'service-worker.js')) && serve({
 			pathname: '/service-worker.js',
-			cache_control: 'max-age=0'
+			cache_control: 'no-cache, no-store, must-revalidate'
 		}),
 
 		fs.existsSync(path.join(output, 'service-worker.js.map')) && serve({
 			pathname: '/service-worker.js.map',
-			cache_control: 'max-age=0'
+			cache_control: 'no-cache, no-store, must-revalidate'
 		}),
 
 		serve({