1 files changed, 12 insertions, 0 deletions
diff --git a/tools/wpt/testharnessreport.js b/tools/wpt/testharnessreport.js
new file mode 100644
index 000000000..13c8ef683
--- /dev/null
+++ b/tools/wpt/testharnessreport.js
@@ -0,0 +1,12 @@
+window.add_result_callback(({ message, name, stack, status }) => {
+  Deno.writeAllSync(
+    Deno.stderr,
+    new TextEncoder().encode(
+      `${JSON.stringify({ name, status, message, stack })}\n`,
+    ),
+  );
+});
+
+window.add_completion_callback((tests, harnessStatus) => {
+  Deno.exit(0);
+});