Constnium/node_modules/es-abstract/2021/ObjectDefineProperties.js
2022-06-23 02:27:43 +02:00

40 lines
1.5 KiB
JavaScript

'use strict';
var callBound = require('call-bind/callBound');
var DefinePropertyOrThrow = require('./DefinePropertyOrThrow');
var FromPropertyDescriptor = require('./FromPropertyDescriptor');
var Get = require('./Get');
var ToObject = require('./ToObject');
var ToPropertyDescriptor = require('./ToPropertyDescriptor');
var forEach = require('../helpers/forEach');
var getOwnPropertyDescriptor = require('../helpers/getOwnPropertyDescriptor');
var OwnPropertyKeys = require('../helpers/OwnPropertyKeys');
var $push = callBound('Array.prototype.push');
// https://262.ecma-international.org/6.0/#sec-objectdefineproperties
module.exports = function ObjectDefineProperties(O, Properties) {
var props = ToObject(Properties); // step 1
var keys = OwnPropertyKeys(props); // step 2
var descriptors = []; // step 3
forEach(keys, function (nextKey) { // step 4
var propDesc = ToPropertyDescriptor(getOwnPropertyDescriptor(props, nextKey)); // step 4.a
if (typeof propDesc !== 'undefined' && propDesc['[[Enumerable]]']) { // step 4.b
var descObj = Get(props, nextKey); // step 4.b.i
var desc = ToPropertyDescriptor(descObj); // step 4.b.ii
$push(descriptors, [nextKey, desc]); // step 4.b.iii
}
});
forEach(descriptors, function (pair) { // step 5
var P = pair[0]; // step 5.a
var desc = pair[1]; // step 5.b
desc = FromPropertyDescriptor(desc); // TODO: remove this once DefinePropertyOrThrow is fixed
DefinePropertyOrThrow(O, P, desc); // step 5.c
});
return O; // step 6
};