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// Copyright 2018 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --harmony-array-flat
{
class MyArray extends Array {
static get [Symbol.species]() {
return Array;
}
}
const wannabe = new MyArray();
const result = wannabe.flatMap(x => [x, x]);
assertEquals(false, result instanceof MyArray);
assertEquals(true, result instanceof Array);
}
{
class MyArray extends Array {
static get [Symbol.species]() {
return this;
}
}
const wannabe = new MyArray();
const result = wannabe.flatMap(x => [x, x]);
assertEquals(true, result instanceof MyArray);
assertEquals(true, result instanceof Array);
}
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