72f1abfbec
The TC39 committee reached consensus to rename `flatten` to `flat`
during the May 22nd meeting. The corresponding patch to the proposal
is here:
093eacc7fe
Bug: v8:7220
Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
Change-Id: Ie8049ae4d4589a4ae7fe3d203053cef798c135e4
Reviewed-on: https://chromium-review.googlesource.com/1069467
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Commit-Queue: Mathias Bynens <mathias@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53294}
39 lines
1.5 KiB
JavaScript
39 lines
1.5 KiB
JavaScript
// Copyright 2018 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --harmony-array-flat
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assertEquals(Array.prototype.flat.length, 0);
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assertEquals(Array.prototype.flat.name, 'flat');
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const input = [1, [2], [[3]]];
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assertEquals(input.flat(), [1, 2, [3]]);
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assertEquals(input.flat(1), [1, 2, [3]]);
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assertEquals(input.flat(true), [1, 2, [3]]);
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assertEquals(input.flat(undefined), [1, 2, [3]]);
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assertEquals(input.flat(-Infinity), [1, [2], [[3]]]);
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assertEquals(input.flat(-1), [1, [2], [[3]]]);
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assertEquals(input.flat(-0), [1, [2], [[3]]]);
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assertEquals(input.flat(0), [1, [2], [[3]]]);
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assertEquals(input.flat(false), [1, [2], [[3]]]);
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assertEquals(input.flat(null), [1, [2], [[3]]]);
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assertEquals(input.flat(''), [1, [2], [[3]]]);
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assertEquals(input.flat('foo'), [1, [2], [[3]]]);
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assertEquals(input.flat(/./), [1, [2], [[3]]]);
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assertEquals(input.flat([]), [1, [2], [[3]]]);
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assertEquals(input.flat({}), [1, [2], [[3]]]);
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assertEquals(
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input.flat(new Proxy({}, {})), [1, [2], [[3]]]);
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assertEquals(input.flat((x) => x), [1, [2], [[3]]]);
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assertEquals(
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input.flat(String), [1, [2], [[3]]]);
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assertEquals(input.flat(2), [1, 2, 3]);
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assertEquals(input.flat(Infinity), [1, 2, 3]);
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assertThrows(() => { input.flat(Symbol()); }, TypeError);
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assertThrows(() => { input.flat(Object.create(null)); }, TypeError);
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