'use strict'; var DefinePropertyOrThrow = require('./DefinePropertyOrThrow'); var Get = require('./Get'); var OrdinaryGetOwnProperty = require('./OrdinaryGetOwnProperty'); var ToObject = require('./ToObject'); var ToPropertyDescriptor = require('./ToPropertyDescriptor'); var forEach = require('../helpers/forEach'); var OwnPropertyKeys = require('own-keys'); // https://262.ecma-international.org/6.0/#sec-objectdefineproperties /** @type { = {}>(O: T, Properties: object) => T} */ module.exports = function ObjectDefineProperties(O, Properties) { var props = ToObject(Properties); // step 1 var keys = OwnPropertyKeys(props); // step 2 /** @type {[string | symbol, import('../types').Descriptor][]} */ var descriptors = []; // step 3 forEach(keys, function (nextKey) { // step 4 var propDesc = OrdinaryGetOwnProperty(props, nextKey); // 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 descriptors[descriptors.length] = [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 DefinePropertyOrThrow(O, P, desc); // step 5.c }); return O; // step 6 };