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6bbc5596b1
PR-URL: https://github.com/nodejs/node/pull/42740 Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Richard Lau <rlau@redhat.com>
18 lines
663 B
JavaScript
18 lines
663 B
JavaScript
// Copyright 2022 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: --allow-natives-syntax
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// Deconstructing will goto fast path.
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const fastProps = { key: "abc", ref: 1234, a: 10, b: 20, c: 30, d: 40, e: 50 };
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const { key, ref, ...normalizedFastProps } = fastProps;
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// Deconstructing will goto runtime, call
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// Runtime:: kCopyDataPropertiesWithExcludedPropertiesOnStack.
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// Add a large index to force dictionary elements.
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const slowProps = { [2**30] : 10};
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assertTrue(%HasDictionaryElements(slowProps));
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const { ...normalizedSlowProps } = slowProps;
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