From 19321a96c8e42f0fd5b7fb336a6dee568961fbbc Mon Sep 17 00:00:00 2001
From: BelKed <66956532+BelKed@users.noreply.github.com>
Date: Wed, 12 Mar 2025 14:58:54 +0100
Subject: [PATCH 1/2] fix: implement keep-alive mechanism for Chrome service
 worker to prevent termination

---
 src/background/main.ts | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/src/background/main.ts b/src/background/main.ts
index ef9537c..e2a596a 100644
--- a/src/background/main.ts
+++ b/src/background/main.ts
@@ -75,3 +75,30 @@ setBaseUrl(client.baseURL)
   .then(waitForEnabled)
   .then(() => sendInitialHeartbeat(client))
   .then(() => console.info('Started successfully'))
+
+/**
+ * Keep the service worker alive to prevent Chrome's 5-minute inactivity termination
+ * This is a workaround for Chrome's behavior of terminating inactive service workers
+ */
+if (import.meta.env.VITE_TARGET_BROWSER === 'chrome') {
+  function setupKeepAlive(): void {
+    console.debug(
+      'Setting up keep-alive ping to prevent service worker termination',
+    )
+
+    setInterval(
+      () => {
+        console.debug('Keep-alive ping')
+        // Force some minimal activity
+        browser.alarms
+          .get(config.heartbeat.alarmName)
+          .then(() => console.debug('Keep-alive ping completed'))
+          .catch((err) => console.error('Keep-alive ping failed:', err))
+      },
+      4 * 60 * 1000,
+    ) // 4 minutes (less than Chrome's ~5 minute timeout)
+  }
+
+  // Start the keep-alive mechanism
+  setupKeepAlive()
+}

From 8f38a69cef387d9ab119b36eaae04208246bf648 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Erik=20Bj=C3=A4reholt?= <erik.bjareholt@gmail.com>
Date: Wed, 12 Mar 2025 15:07:15 +0100
Subject: [PATCH 2/2] Apply suggestions from code review

---
 src/background/main.ts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/background/main.ts b/src/background/main.ts
index e2a596a..a1b092b 100644
--- a/src/background/main.ts
+++ b/src/background/main.ts
@@ -79,6 +79,7 @@ setBaseUrl(client.baseURL)
 /**
  * Keep the service worker alive to prevent Chrome's 5-minute inactivity termination
  * This is a workaround for Chrome's behavior of terminating inactive service workers
+ * https://stackoverflow.com/questions/66618136
  */
 if (import.meta.env.VITE_TARGET_BROWSER === 'chrome') {
   function setupKeepAlive(): void {