1 files changed, 3 insertions, 0 deletions
diff --git a/test/wpt/tests/service-workers/service-worker/resources/echo-message-to-source-worker.js b/test/wpt/tests/service-workers/service-worker/resources/echo-message-to-source-worker.js
new file mode 100644
index 0000000..bbbd35f
--- /dev/null
+++ b/test/wpt/tests/service-workers/service-worker/resources/echo-message-to-source-worker.js
@@ -0,0 +1,3 @@
+addEventListener('message', evt => {
+  evt.source.postMessage(evt.data);
+});