Strict mode Passingnon-Strict mode Passing
Features:
- ∅
// 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-map.prototype.delete description: > Deleting an entry does not break a [[MapData]] List. info: | Map.prototype.delete ( key ) 4. Let entries be the List that is the value of M’s [[MapData]] internal slot. 5. Repeat for each Record {[[key]], [[value]]} p that is an element of entries, a. If p.[[key]] is not empty and SameValueZero(p.[[key]], key) is true, then i. Set p.[[key]] to empty. ii. Set p.[[value]] to empty. iii. Return true. ... ---*/ var m = new Map([ ['a', 1], ['b', 2], ['c', 3] ]); var e = m.entries(); e.next(); m.delete('b'); var n = e.next(); assert.sameValue(n.value[0], 'c'); assert.sameValue(n.value[1], 3); n = e.next(); assert.sameValue(n.value, undefined); assert.sameValue(n.done, true);