Strict mode Passingnon-Strict mode Passing
Features:
- WeakSet
// 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-weakset.prototype.delete description: > Delete an entry that is an Object info: | WeakSet.prototype.delete ( _value_ ) 4. Let _entries_ be the List that is _S_.[[WeakSetData]]. 5. For each element _e_ of _entries_, do a. If _e_ is not ~empty~ and SameValue(_e_, _value_) is *true*, then i. Replace the element of _entries_ whose value is _e_ with an element whose value is ~empty~. ii. Return *true*. features: [WeakSet] ---*/ var foo = {}; var s = new WeakSet(); s.add(foo); var result = s.delete(foo); assert.sameValue(s.has(foo), false); assert.sameValue(result, true, 'WeakSet#delete returns true');