From c3454847a0b343a6341a4e7c4ee2ad9294b727e7 Mon Sep 17 00:00:00 2001
From: Jason Zimdars <jz@37signals.com>
Date: Tue, 2 Sep 2025 17:24:21 -0500
Subject: [PATCH] Add a simple method to refresh content when launching or
 switching tabs

Prevents stale content on load as reported in:
https://fizzy.37signals.com/5986089/collections/2/cards/1449
---
 app/views/pwa/service_worker.js | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/app/views/pwa/service_worker.js b/app/views/pwa/service_worker.js
index e27c062f9..df284d578 100644
--- a/app/views/pwa/service_worker.js
+++ b/app/views/pwa/service_worker.js
@@ -1,3 +1,14 @@
+self.addEventListener('fetch', (event) => {
+  if (event.request.method !== 'GET') return
+
+  if (event.request.destination === 'document') {
+    event.respondWith(
+      fetch(event.request, { cache: 'no-cache' })
+        .catch(() => caches.match(event.request))
+    )
+  }
+})
+
 self.addEventListener("push", async (event) => {
   const data = await event.data.json()
   event.waitUntil(Promise.all([ showNotification(data), updateBadgeCount(data.options) ]))