mirror of https://github.com/tc39/test262.git
47 lines
1.5 KiB
JavaScript
47 lines
1.5 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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1. Let keys be a new empty List.
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[...]
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5. For each integer i starting with 0 such that i < len, in ascending order, do
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a. Add ! ToString(i) as the last element of keys.
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[...]
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7. For each own property key P of O such that Type(P) is String and P is not an
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array index, in ascending chronological order of property creation, do
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a. Add P as the last element of keys.
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8. For each own property key P of O such that Type(P) is Symbol, in ascending
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chronological order of property creation, do
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a. Add P as the last element of keys.
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9. Return keys.
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includes: [compareArray.js]
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features: [Symbol, Proxy, Reflect]
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---*/
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var sym = Symbol();
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var string = new String("str");
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string[sym] = 1;
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var stringTarget = new Proxy(string, {});
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var stringProxy = new Proxy(stringTarget, {});
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assert.compareArray(
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Reflect.ownKeys(stringProxy),
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["0", "1", "2", "length", sym]
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);
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