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- 'use strict';
- var GetIntrinsic = require('get-intrinsic');
- var $gOPD = require('../helpers/getOwnPropertyDescriptor');
- var $TypeError = GetIntrinsic('%TypeError%');
- var callBound = require('call-bind/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://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));
- };
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