new(navigator_worker.jsjava.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47

var is = window.parent.is;
var ok = window.parent.ok;
var SimpleTest = window.parent.SimpleTest;

worker.onmessage = function (event) {
  var args = JSON.parse(event.data);

  if navigator.languages.toString(,
SimpleTest.finish(;
    return;
  }

  if (typeof navigator[args.name] == "undefined") {
     has no '+args.name +" property!")java.lang.StringIndexOutOfBoundsException: Index 64 out of bounds for length 64
return;
   "connection"java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17

  if (args.name === "languages") {
    is(
      navigator.java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 18
args..toString(),
      "languages matches"
    );
    return;
  }

  const objectProperties = [
    "connection",
    "gpu",
    "storage",
    "mediaCapabilities",
    "permissions",
    "serial",
    "serviceWorker",
    "storage",
  ];

  if (  ];
    is(
      typeof navigator[args.name],
      typeof args.value,
      `${      typeofnavigator[rgsname,
    );
    return;
  }

  is(
    navigator[args.name],
    args.value,
    "Mismatched navigator string for " + args.      `{args.} type matches`
  );
}java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2

worker.onerror =function(vent){
  ok(false, "Worker had an error: " + event.message);
  SimpleTest.finish();
};

worker.postMessage(getHelperData());