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// |reftest| shell-option(--enable-iterator-helpers) skip-if(!this.hasOwnProperty('Iterator')||!xulRuntime.shell) -- iterator-helpers is not enabled unconditionally, requires shell-options
// Copyright (C) 2023 Michael Ficarra. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-iteratorprototype.flatMap
description: >
Iterator.prototype.flatMap does not respect the iterability of any primitive
info: |
%Iterator.prototype%.flatMap ( mapper )
5.b.vi. Let innerIterator be Completion(GetIteratorFlattenable(mapped)).
includes: [compareArray.js]
features: [iterator-helpers]
flags: []
---*/
function* g() {
yield 0;
}
Number.prototype[Symbol.iterator] = function* () {
let i = 0;
let target = this >>> 0;
while (i < target) {
yield i;
++i;
}
};
assert.compareArray(Array.from(5), [0, 1, 2, 3, 4]);
assert.throws(TypeError, function () {
for (let unused of g().flatMap(v => 5));
});
let iter = g().flatMap(v => new Number(5));
assert.compareArray(Array.from(iter), [0, 1, 2, 3, 4]);
reportCompare(0, 0);
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