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// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
desc: >
IteratorClose throws a TypeError when `return` returns a non-Object value
info: |
ArrayAssignmentPattern : [ AssignmentElementList ]
[...]
5. If iteratorRecord.[[done]] is false, return IteratorClose(iterator,
result).
6. Return result.
7.4.6 IteratorClose( iterator, completion )
[...]
6. Let innerResult be Call(return, iterator, « »).
7. If completion.[[type]] is throw, return Completion(completion).
8. If innerResult.[[type]] is throw, return Completion(innerResult).
9. If Type(innerResult.[[value]]) is not Object, throw a TypeError
exception.
features: [Symbol.iterator]
template: error
es6id: 12.14.5.2
esid: sec-runtime-semantics-destructuringassignmentevaluation
---*/
//- setup
var _;
var iterable = {};
var nextCount = 0;
var iterator = {
next: function() {
nextCount += 1;
// Set an upper-bound to limit unnecessary iteration in non-conformant
// implementations
return { done: nextCount > 10 };
},
return: function() {
return null;
}
};
iterable[Symbol.iterator] = function() {
return iterator;
};
//- elems
[ _ ]
//- vals
iterable
//- error
TypeError
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