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33 lines
1.2 KiB
33 lines
1.2 KiB
'use strict'; |
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var DefinePropertyOrThrow = require('./DefinePropertyOrThrow'); |
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var Get = require('./Get'); |
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var OrdinaryGetOwnProperty = require('./OrdinaryGetOwnProperty'); |
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var ToObject = require('./ToObject'); |
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var ToPropertyDescriptor = require('./ToPropertyDescriptor'); |
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var forEach = require('../helpers/forEach'); |
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var OwnPropertyKeys = require('own-keys'); |
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// https://262.ecma-international.org/15.0/#sec-objectdefineproperties |
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module.exports = function ObjectDefineProperties(O, Properties) { |
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var props = ToObject(Properties); // step 1 |
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var keys = OwnPropertyKeys(props); // step 2 |
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var descriptors = []; // step 3 |
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forEach(keys, function (nextKey) { // step 4 |
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var propDesc = OrdinaryGetOwnProperty(props, nextKey); // ToPropertyDescriptor(getOwnPropertyDescriptor(props, nextKey)); // step 4.a |
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if (typeof propDesc !== 'undefined' && propDesc['[[Enumerable]]']) { // step 4.b |
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var descObj = Get(props, nextKey); // step 4.b.i |
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var desc = ToPropertyDescriptor(descObj); // step 4.b.ii |
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descriptors[descriptors.length] = { '[[Key]]': nextKey, '[[Descriptor]]': desc }; // step 4.b.iii |
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} |
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}); |
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forEach(descriptors, function (pair) { // step 5 |
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DefinePropertyOrThrow(O, pair['[[Key]]'], pair['[[Descriptor]]']); // step 5.c |
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}); |
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return O; // step 6 |
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};
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