// Copyright (C) 2016 the V8 project authors. All rights reserved. // This code is governed by the BSD license found in the LICENSE file. /*--- description: IteratorClose not invoked when elision exhausts the iterator info: | ArrayAssignmentPattern : [ AssignmentElementList , Elisionopt AssignmentRestElementopt ] [...] 6. If Elision is present, then a. Let status be the result of performing IteratorDestructuringAssignmentEvaluation of Elision with iteratorRecord as the argument. b. If status is an abrupt completion, then [...] 8. If iteratorRecord.[[done]] is false, return IteratorClose(iterator, status). 9. Return Completion(status). features: [Symbol.iterator] es6id: 12.14.5.2 esid: sec-runtime-semantics-destructuringassignmentevaluation ---*/ var nextCount = 0; var returnCount = 0; var iterable = {}; var x; var iterator = { next: function() { nextCount += 1; return { done: nextCount > 1 }; }, return: function() { returnCount += 1; } }; iterable[Symbol.iterator] = function() { return iterator; }; [ x , , ] = iterable; assert.sameValue(nextCount, 2); assert.sameValue(returnCount, 0);