The Tor Browser / file revision

 /*

  * Any copyright is dedicated to the Public Domain.

  * http://creativecommons.org/licenses/publicdomain/

  */

 var errors = ["Error", "EvalError", "RangeError", "ReferenceError",

               "SyntaxError", "TypeError", "URIError"];

 for (var i = 0; i < errors.length; i++) {

   var error = this[errors[i]];

   var desc = Object.getOwnPropertyDescriptor(error.prototype, "name");

   assertEq(!!desc, true, errors[i] + ".prototype.name should exist");

   assertEq((desc || {}).enumerable, false, errors[i] + ".prototype.name should not be enumerable");

   desc = Object.getOwnPropertyDescriptor(error.prototype, "message");

   assertEq(!!desc, true, errors[i] + ".prototype.message should exist");

   assertEq((desc || {}).enumerable, false, errors[i] + ".prototype.message should not be enumerable");

   var instance = new error;

   desc = Object.getOwnPropertyDescriptor(instance, "message");

   assertEq(!!desc, false, "new " + errors[i] + ".message should not exist");

   instance = new error("a message");

   desc = Object.getOwnPropertyDescriptor(instance, "message");

   assertEq(!!desc, true, "new " + errors[i] + "(...).message should exist");

   assertEq((desc || {}).enumerable, false, "new " + errors[i] + "(...).message should not be enumerable");

 }

 reportCompare(true, true);