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authorGravatar Piotr Russ <mail@pruss.it> 2020-11-16 00:10:28 +0100
committerGravatar Piotr Russ <mail@pruss.it> 2020-11-16 00:10:28 +0100
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+'use strict';
+
+var GetIntrinsic = require('../GetIntrinsic');
+
+var $gOPD = require('../helpers/getOwnPropertyDescriptor');
+var $TypeError = GetIntrinsic('%TypeError%');
+
+var callBound = require('../helpers/callBound');
+
+var $isEnumerable = callBound('Object.prototype.propertyIsEnumerable');
+
+var has = require('has');
+
+var IsArray = require('./IsArray');
+var IsPropertyKey = require('./IsPropertyKey');
+var IsRegExp = require('./IsRegExp');
+var ToPropertyDescriptor = require('./ToPropertyDescriptor');
+var Type = require('./Type');
+
+// https://www.ecma-international.org/ecma-262/6.0/#sec-ordinarygetownproperty
+
+module.exports = function OrdinaryGetOwnProperty(O, P) {
+ if (Type(O) !== 'Object') {
+ throw new $TypeError('Assertion failed: O must be an Object');
+ }
+ if (!IsPropertyKey(P)) {
+ throw new $TypeError('Assertion failed: P must be a Property Key');
+ }
+ if (!has(O, P)) {
+ return void 0;
+ }
+ if (!$gOPD) {
+ // ES3 / IE 8 fallback
+ var arrayLength = IsArray(O) && P === 'length';
+ var regexLastIndex = IsRegExp(O) && P === 'lastIndex';
+ return {
+ '[[Configurable]]': !(arrayLength || regexLastIndex),
+ '[[Enumerable]]': $isEnumerable(O, P),
+ '[[Value]]': O[P],
+ '[[Writable]]': true
+ };
+ }
+ return ToPropertyDescriptor($gOPD(O, P));
+};