<!DOCTYPE html>
<meta charset=utf-8>
<title>Test the error message from import()</title>
<script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
<script>
  SimpleTest.waitForExplicitFinish();

  async function testLoaded() {
    await import("./404.js").catch((error) => {
      ok(error instanceof TypeError, "Should be a TypeError.");
      ok(error.message.match(/404.js/), "Should have the filename.");
      SimpleTest.finish();
    });
  }
</script>
<body onload='testLoaded()'></body>
