| 15.2.3.13-2-21 (TestCases/chapter15/15.2/15.2.3/15.2.3.13/15.2.3.13-2-21.js) Object.isExtensible returns true for all built-in objects (Error.prototype) | |
| On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". | |
| PASS ES5Harness.preconditionPassed is true | |
| PASS ES5Harness.testPassed is true | |
| PASS successfullyParsed is true | |
| TEST COMPLETE | |