@@ -130,6 +130,10 @@ function run(workerData) {
   // eslint-disable-next-line no-undef
   add_completion_callback((_, status) => {
     clearTimeout(timeout);
+    // Match WPT semantics: exceptions thrown after done() do not fail the
+    // test. This also replaces the reporting handler of the process backend.
+    process.removeAllListeners('uncaughtException');
+    process.on('uncaughtException', () => {});
     send({
       type: 'completion',
       status,