1 files changed, 16 insertions, 0 deletions
diff --git a/dom/serviceworkers/test/file_js_cache_cleanup.js b/dom/serviceworkers/test/file_js_cache_cleanup.js
new file mode 100644
index 0000000000..c6853faaf2
--- /dev/null
+++ b/dom/serviceworkers/test/file_js_cache_cleanup.js
@@ -0,0 +1,16 @@
+"use strict";
+const { XPCOMUtils } = ChromeUtils.importESModule(
+  "resource://gre/modules/XPCOMUtils.sys.mjs"
+);
+
+function clearCache() {
+  const cacheStorageSrv = Cc[
+    "@mozilla.org/netwerk/cache-storage-service;1"
+  ].getService(Ci.nsICacheStorageService);
+  cacheStorageSrv.clear();
+}
+
+addMessageListener("teardown", function () {
+  clearCache();
+  sendAsyncMessage("teardown-complete");
+});