1 files changed, 9 insertions, 0 deletions
diff --git a/dom/serviceworkers/test/streamfilter_worker.js b/dom/serviceworkers/test/streamfilter_worker.js
new file mode 100644
index 0000000000..03a0f0a933
--- /dev/null
+++ b/dom/serviceworkers/test/streamfilter_worker.js
@@ -0,0 +1,9 @@
+onactivate = e => e.waitUntil(clients.claim());
+
+onfetch = e => {
+  const searchParams = new URL(e.request.url).searchParams;
+
+  if (searchParams.get("syntheticResponse") === "1") {
+    e.respondWith(new Response(String(searchParams)));
+  }
+};