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41 lines
1.1 KiB
JavaScript
41 lines
1.1 KiB
JavaScript
// Copyright (C) 2020 Alexey Shvayka. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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esid: sec-proxy-object-internal-methods-and-internal-slots-ownpropertykeys
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description: >
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If "ownKeys" trap is null or undefined, [[OwnPropertyKeys]] call is
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properly forwarded to [[ProxyTarget]] (which is also a Proxy object).
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info: |
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[[OwnPropertyKeys]] ( )
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[...]
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4. Let target be O.[[ProxyTarget]].
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5. Let trap be ? GetMethod(handler, "ownKeys").
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6. If trap is undefined, then
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a. Return ? target.[[OwnPropertyKeys]]().
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[[OwnPropertyKeys]] ( )
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[...]
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7. Let trapResultArray be ? Call(trap, handler, « target »).
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8. Let trapResult be ? CreateListFromArrayLike(trapResultArray, « String, Symbol »).
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[...]
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23. Return trapResult.
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includes: [compareArray.js]
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features: [Symbol, Proxy, Reflect]
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---*/
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var trapResult = [Symbol(), "length", "foo", "0"];
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var target = new Proxy([], {
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ownKeys: function(_target) {
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return trapResult;
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},
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});
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var proxy = new Proxy(target, {
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ownKeys: undefined,
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});
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assert.compareArray(Reflect.ownKeys(proxy), trapResult);
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