// Copyright (C) 2020 Alexey Shvayka. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-array.prototype.concat
description: >
TypeError is thrown if CreateDataProperty fails.
(result object is non-extensible, argument is spreadable)
info: |
Array.prototype.concat ( ...arguments )
[...]
5. Repeat, while items is not empty
[...]
c. If spreadable is true, then
[...]
iv. Repeat, while k < len
[...]
3. If exists is true, then
[...]
b. Perform ? CreateDataPropertyOrThrow(A, ! ToString(n), subElement).
[...]
CreateDataPropertyOrThrow ( O, P, V )
[...]
3. Let success be ? CreateDataProperty(O, P, V).
4. If success is false, throw a TypeError exception.
features: [Symbol.species]
---*/
var A = function(_length) {
this.length = 0;
Object.preventExtensions(this);
};
var arr = [];
arr.constructor = {};
arr.constructor[Symbol.species] = A;
assert.throws(TypeError, function() {
arr.concat([1]);
}, 'arr.concat([1]) throws a TypeError exception');