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49 lines
1.6 KiB
JavaScript
49 lines
1.6 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-object.getownpropertydescriptors
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description: >
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Property names are returned in ascending chronological order of creation
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that is unaffected by [[DefineOwnProperty]].
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info: |
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Object.getOwnPropertyDescriptors ( O )
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[...]
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2. Let ownKeys be ? obj.[[OwnPropertyKeys]]().
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3. Let descriptors be ! OrdinaryObjectCreate(%Object.prototype%).
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4. For each element key of ownKeys in List order, do
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[...]
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c. If descriptor is not undefined,
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perform ! CreateDataPropertyOrThrow(descriptors, key, descriptor).
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5. Return descriptors.
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OrdinaryOwnPropertyKeys ( O )
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[...]
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3. For each own property key P of O that is a String but is not an array index,
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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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4. For each own property key P of O that is a 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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5. Return keys.
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features: [Symbol, Reflect]
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includes: [compareArray.js]
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---*/
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var obj = {};
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var symA = Symbol("a");
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var symB = Symbol("b");
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obj[symA] = 1;
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obj[symB] = 2;
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Object.defineProperty(obj, symA, {configurable: false});
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var objDescs = Object.getOwnPropertyDescriptors(obj);
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assert.compareArray(Reflect.ownKeys(objDescs), [symA, symB]);
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var re = /(?:)/g;
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re.a = 1;
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Object.defineProperty(re, "lastIndex", {value: 2});
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var reDescs = Object.getOwnPropertyDescriptors(re);
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assert.compareArray(Reflect.ownKeys(reDescs), ["lastIndex", "a"]);
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