1 files changed, 19 insertions, 0 deletions
diff --git a/dom/events/test/error_event_worker.js b/dom/events/test/error_event_worker.js
new file mode 100644
index 0000000000..13422c6974
--- /dev/null
+++ b/dom/events/test/error_event_worker.js
@@ -0,0 +1,19 @@
+addEventListener("error", function (e) {
+  var obj = {};
+  for (var prop of ["message", "filename", "lineno"]) {
+    obj[prop] = e[prop];
+  }
+  obj.type = "event";
+  postMessage(obj);
+});
+onerror = function (message, filename, lineno) {
+  var obj = {
+    message,
+    filename,
+    lineno,
+    type: "callback",
+  };
+  postMessage(obj);
+  return false;
+};
+throw new Error("workerhello");