| // Copyright (C) 2019 Leo Balter. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| |
| /*--- |
| esid: sec-finalization-group.prototype.register |
| description: holdings may be the same as target |
| info: | |
| FinalizationGroup.prototype.register ( target , holdings [, unregisterToken ] ) |
| |
| 1. Let finalizationGroup be the this value. |
| 2. If Type(finalizationGroup) is not Object, throw a TypeError exception. |
| 3. If Type(target) is not Object, throw a TypeError exception. |
| 4. If finalizationGroup does not have a [[Cells]] internal slot, throw a TypeError exception. |
| 5. If Type(unregisterToken) is not Object, |
| a. If unregisterToken is not undefined, throw a TypeError exception. |
| b. Set unregisterToken to empty. |
| 6. Let cell be the Record { [[Target]] : target, [[Holdings]]: holdings, [[UnregisterToken]]: unregisterToken }. |
| 7. Append cell to finalizationGroup.[[Cells]]. |
| 8. Return undefined. |
| features: [FinalizationGroup] |
| ---*/ |
| |
| var fg = new FinalizationGroup(function() {}); |
| |
| var target = {}; |
| assert.sameValue(fg.register(target, target), undefined); |