1 files changed, 18 insertions, 0 deletions
diff --git a/dom/serviceworkers/test/simple_fetch_worker.js b/dom/serviceworkers/test/simple_fetch_worker.js
new file mode 100644
index 0000000000..d5b1d8d9a7
--- /dev/null
+++ b/dom/serviceworkers/test/simple_fetch_worker.js
@@ -0,0 +1,18 @@
+// A simple worker script that forward intercepted url to the controlled window.
+
+function responseMsg(msg) {
+  self.clients
+    .matchAll({
+      includeUncontrolled: true,
+      type: "window",
+    })
+    .then(clients => {
+      if (clients && clients.length) {
+        clients[0].postMessage(msg);
+      }
+    });
+}
+
+onfetch = function(e) {
+  responseMsg(e.request.url);
+};