38 lines
1.3 KiB
JavaScript
38 lines
1.3 KiB
JavaScript
'use strict';
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var callBound = require('call-bind/callBound');
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var DefinePropertyOrThrow = require('./DefinePropertyOrThrow');
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var Get = require('./Get');
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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 getOwnPropertyDescriptor = require('gopd');
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var OwnPropertyKeys = require('../helpers/OwnPropertyKeys');
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var $push = callBound('Array.prototype.push');
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// https://262.ecma-international.org/15.0/#sec-objectdefineproperties
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module.exports = function ObjectDefineProperties(O, Properties) {
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var props = ToObject(Properties); // step 1
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var keys = OwnPropertyKeys(props); // step 2
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var descriptors = []; // step 3
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forEach(keys, function (nextKey) { // step 4
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var propDesc = ToPropertyDescriptor(getOwnPropertyDescriptor(props, nextKey)); // step 4.a
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if (typeof propDesc !== 'undefined' && propDesc['[[Enumerable]]']) { // step 4.b
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var descObj = Get(props, nextKey); // step 4.b.i
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var desc = ToPropertyDescriptor(descObj); // step 4.b.ii
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$push(descriptors, { '[[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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