| // Copyright (C) 2015 the V8 project authors. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| /*--- |
| esid: sec-proxy-object-internal-methods-and-internal-slots-ownpropertykeys |
| description: > |
| If return is not a list object, throw a TypeError exception |
| info: | |
| [[OwnPropertyKeys]] ( ) |
| |
| 7. Let trapResultArray be ? Call(trap, handler, « target »). |
| 8. Let trapResult be ? CreateListFromArrayLike(trapResultArray, « String, |
| Symbol »). |
| ... |
| |
| #sec-createlistfromarraylike |
| 7.3.17 CreateListFromArrayLike (obj [, elementTypes] ) |
| |
| 2. If Type(obj) is not Object, throw a TypeError exception. |
| |
| features: [Proxy, Symbol] |
| ---*/ |
| |
| var target = {}; |
| var p = new Proxy(target, { |
| ownKeys: function() { |
| return undefined; |
| } |
| }); |
| |
| assert.throws(TypeError, function() { |
| Object.keys(p); |
| }); |