From fa5f5ce07b95da8cfa123a4a1445c956c063242c Mon Sep 17 00:00:00 2001
From: Tao Zhou <tao.zhou@glean.com>
Date: Tue, 13 Feb 2024 10:05:26 -0800
Subject: [PATCH] feat: mark precache requests as low priority

---
 packages/workbox-precaching/src/PrecacheController.ts | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/packages/workbox-precaching/src/PrecacheController.ts b/packages/workbox-precaching/src/PrecacheController.ts
index bb7f97e59..9d933e3d9 100644
--- a/packages/workbox-precaching/src/PrecacheController.ts
+++ b/packages/workbox-precaching/src/PrecacheController.ts
@@ -30,6 +30,11 @@ declare global {
   interface ServiceWorkerGlobalScope {
     __WB_MANIFEST: Array<PrecacheEntry | string>;
   }
+
+  // https://caniuse.com/?search=Request.init%20priority
+  interface RequestInit {
+    priority?: 'low' | 'normal' | 'high';
+  }
 }
 
 interface PrecacheControllerOptions {
@@ -213,6 +218,7 @@ class PrecacheController {
           integrity,
           cache: cacheMode,
           credentials: 'same-origin',
+          priority: 'low',
         });
 
         await Promise.all(