| // 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-weakmap.prototype.delete |
| description: > |
| Delete an entry from initial iterable. |
| info: | |
| WeakMap.prototype.delete ( value ) |
| |
| ... |
| 5. Let entries be the List that is the value of M’s [[WeakMapData]] internal |
| slot. |
| 6. If Type(key) is not Object, return false. |
| 7. Repeat for each Record {[[key]], [[value]]} p that is an element of |
| entries, |
| a. If p.[[key]] is not empty and SameValue(p.[[key]], key) is true, then |
| i. Set p.[[key]] to empty. |
| ii. Set p.[[value]] to empty. |
| iii. Return true. |
| ... |
| ---*/ |
| |
| var foo = {}; |
| var map = new WeakMap([ |
| [foo, 42] |
| ]); |
| |
| var result = map.delete(foo); |
| |
| assert.sameValue(map.has(foo), false); |
| assert.sameValue(result, true, 'WeakMap#delete returns true'); |